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2.
3. 4.
5.
6.
7.
8.
9.
10.
11. 12.
(Note 1) "Renesas Electronics" as used in this document means Renesas Electronics Corporation and also includes its majorityowned subsidiaries. (Note 2) "Renesas Electronics product(s)" means any product developed or manufactured by or for Renesas Electronics.
16
User's Manual
The revision list can be viewed directly by clicking the title page. The revision list summarizes the locations of revisions and additions. Details should always be checked by referring to the relevant text.
H8S/2556 Group, H8S/2552 Group, H8S/2506 Group Hardware Manual
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2500 Series
H8S/2556 H8S/2552 H8S/2551 H8S/2506 H8S/2505 HD64F2556 HD64F2552 HD64F2551 HD64F2506 HD64F2505
Rev.6.00 2009.09
Notes regarding these materials
1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. Renesas shall have no liability for damages or infringement of any intellectual property or other rights arising out of the use of any information in this document, including, but not limited to, product data, diagrams, charts, programs, algorithms, and application circuit examples. 3. You should not use the products or the technology described in this document for the purpose of military applications such as the development of weapons of mass destruction or for the purpose of any other military use. When exporting the products or technology described herein, you should follow the applicable export control laws and regulations, and procedures required by such laws and regulations. 4. All information included in this document such as product data, diagrams, charts, programs, algorithms, and application circuit examples, is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas products listed in this document, please confirm the latest product information with a Renesas sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas such as that disclosed through our website. (http://www.renesas.com ) 5. Renesas has used reasonable care in compiling the information included in this document, but Renesas assumes no liability whatsoever for any damages incurred as a result of errors or omissions in the information included in this document. 6. When using or otherwise relying on the information in this document, you should evaluate the information in light of the total system before deciding about the applicability of such information to the intended application. Renesas makes no representations, warranties or guaranties regarding the suitability of its products for any particular application and specifically disclaims any liability arising out of the application and use of the information in this document or Renesas products. 7. With the exception of products specified by Renesas as suitable for automobile applications, Renesas products are not designed, manufactured or tested for applications or otherwise in systems the failure or malfunction of which may cause a direct threat to human life or create a risk of human injury or which require especially high quality and reliability such as safety systems, or equipment or systems for transportation and traffic, healthcare, combustion control, aerospace and aeronautics, nuclear power, or undersea communication transmission. If you are considering the use of our products for such purposes, please contact a Renesas sales office beforehand. Renesas shall have no liability for damages arising out of the uses set forth above. 8. Notwithstanding the preceding paragraph, you should not use Renesas products for the purposes listed below: (1) artificial life support devices or systems (2) surgical implantations (3) healthcare intervention (e.g., excision, administration of medication, etc.) (4) any other purposes that pose a direct threat to human life Renesas shall have no liability for damages arising out of the uses set forth in the above and purchasers who elect to use Renesas products in any of the foregoing applications shall indemnify and hold harmless Renesas Technology Corp., its affiliated companies and their officers, directors, and employees against any and all damages arising out of such applications. 9. You should use the products described herein within the range specified by Renesas, especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. Renesas shall have no liability for malfunctions or damages arising out of the use of Renesas products beyond such specified ranges. 10. Although Renesas endeavors to improve the quality and reliability of its products, IC products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Please be sure to implement safety measures to guard against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a Renesas product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other applicable measures. Among others, since the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 11. In case Renesas products listed in this document are detached from the products to which the Renesas products are attached or affixed, the risk of accident such as swallowing by infants and small children is very high. You should implement safety measures so that Renesas products may not be easily detached from your products. Renesas shall have no liability for damages arising out of such detachment. 12. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written approval from Renesas. 13. Please contact a Renesas sales office if you have any questions regarding the information contained in this document, Renesas semiconductor products, or if you have any other inquiries.
Rev. 6.00 Sep. 24, 2009 Page ii of xlvi REJ09B0099-0600
General Precautions in the Handling of MPU/MCU Products
The following usage notes are applicable to all MPU/MCU products from Renesas. For detailed usage notes on the products covered by this manual, refer to the relevant sections of the manual. If the descriptions under General Precautions in the Handling of MPU/MCU Products and in the body of the manual differ from each other, the description in the body of the manual takes precedence. 1. Handling of Unused Pins Handle unused pins in accord with the directions given under Handling of Unused Pins in the manual. The input pins of CMOS products are generally in the high-impedance state. In operation with an unused pin in the open-circuit state, extra electromagnetic noise is induced in the vicinity of LSI, an associated shoot-through current flows internally, and malfunctions may occur due to the false recognition of the pin state as an input signal. Unused pins should be handled as described under Handling of Unused Pins in the manual. 2. Processing at Power-on The state of the product is undefined at the moment when power is supplied. The states of internal circuits in the LSI are indeterminate and the states of register settings and pins are undefined at the moment when power is supplied. In a finished product where the reset signal is applied to the external reset pin, the states of pins are not guaranteed from the moment when power is supplied until the reset process is completed. In a similar way, the states of pins in a product that is reset by an on-chip power-on reset function are not guaranteed from the moment when power is supplied until the power reaches the level at which resetting has been specified. 3. Prohibition of Access to Reserved Addresses Access to reserved addresses is prohibited. The reserved addresses are provided for the possible future expansion of functions. Do not access these addresses; the correct operation of LSI is not guaranteed if they are accessed. 4. Clock Signals After applying a reset, only release the reset line after the operating clock signal has become stable. When switching the clock signal during program execution, wait until the target clock signal has stabilized. When the clock signal is generated with an external resonator (or from an external oscillator) during a reset, ensure that the reset line is only released after full stabilization of the clock signal. Moreover, when switching to a clock signal produced with an external resonator (or by an external oscillator) while program execution is in progress, wait until the target clock signal is stable. 5. Differences between Products Before changing from one product to another, i.e. to one with a different type number, confirm that the change will not lead to problems. The characteristics of MPU/MCU in the same group but having different type numbers may differ because of the differences in internal memory capacity and layout pattern. When changing to products of different type numbers, implement a system-evaluation test for each of the products.
Rev. 6.00 Sep. 24, 2009 Page iii of xlvi REJ09B0099-0600
Configuration of This Manual
This manual comprises the following items: 1. 2. 3. 4. 5. 6. General Precautions in the Handling of MPU/MCU Products Configuration of This Manual Preface Contents Overview Description of Functional Modules * CPU and System-Control Modules * On-Chip Peripheral Modules The configuration of the functional description of each module differs according to the module. However, the generic style includes the following items: i) Feature ii) Input/Output Pin iii) Register Description iv) Operation v) Usage Note
When designing an application system that includes this LSI, take notes into account. Each section includes notes in relation to the descriptions given, and usage notes are given, as required, as the final part of each section. 7. List of Registers 8. Electrical Characteristics 9. Appendix 10. Main Revisions for This Edition (only for revised versions) The list of revisions is a summary of points that have been revised or added to earlier versions. This does not include all of the revised contents. For details, see the actual locations in this manual. 11. Index
Rev. 6.00 Sep. 24, 2009 Page iv of xlvi REJ09B0099-0600
Preface
This LSI is a high-performance microcomputer made up of the H8S/2000 CPU with an internal 32-bit configuration as its core, and the peripheral functions required to configure a system. A single-power flash memory (F-ZTATTM)*1 version is available for this LSI's ROM. The F-ZTAT version provides flexibility as it can be reprogrammed in no time to cope with all situations from the early stages of mass production to full-scale mass production. This is particularly applicable to application devices with specifications that will most probably change. The on-chip peripheral functions for each of the group are shown below. List of on-chip peripheral functions:
Group Name H8S/2556 Group H8S/2552 Group H8S/2552 Product Name Bus controller Data transfer controller (DTC) PC break controller (PBC) 16-bit timer pulse unit (TPU) 8-bit timer (TMR) Watch dog timer (WDT) Serial communication interface (SCI) I C bus interface 2 (IIC2) IEBus * controller (IEB) Controller area network (HCAN) D/A converter A/D converter
TM 2 2
H8S/2506 Group H8S/2506 H8S/2505 O (16 bits) O O x6 x4 x2 x5 x2 x2 x 16
H8S/2556 O (16 bits) O O x6 x4 x2 x5 x2 x1 x2 x 16
H8S/2551 O (16 bits) O O x6 x4 x2 x5 x2 x1 x2 x 16
Notes: 1. F-ZTAT is a trademark of Renesas Technology Corp. 2. IEBus is a trademark of NEC Electronics Corporation.
Rev. 6.00 Sep. 24, 2009 Page v of xlvi REJ09B0099-0600
Target Users: This manual was written for users who will be using the H8S/2556 Group, H8S/2552 Group, and H8S/2506 Group in the design of application systems. Target users are expected to understand the fundamentals of electrical circuits, logical circuits, and microcomputers. Objective: This manual was written to explain the hardware functions and electrical characteristics of the H8S/2556 Group, H8S/2552 Group, and H8S/2506 Group. Refer to the H8S/2600 Series, H8S/2000 Series Software Manual for a detailed description of the instruction set.
Notes on reading this manual: * In order to understand the overall functions of the chip Read the manual according to the contents. This manual can be roughly categorized into parts on the CPU, system control functions, peripheral functions and electrical characteristics. * In order to understand the details of the CPU's functions Read the H8S/2600 Series, H8S/2000 Series Software Manual. * In order to understand the details of a register when its name is known Read the index that is the final part of the manual to find the page number of the entry on the register. The addresses, bits, and initial values of the registers are summarized in section 23, List of Registers. Examples: Register name: The following notation is used for cases when the same or a similar function, e.g. 16-bit timer pulse unit or serial communication, is implemented on more than one channel: XXX_N (XXX is the register name and N is the channel number) Bit order: The MSB is on the left and the LSB is on the right. Number notation: Binary is B'xxxx, hexadecimal is H'xxxx, decimal is xxxx. Signal notation: An overbar is added to a low-active signal: xxxx Related Manuals: The latest versions of all related manuals are available from our web site. Please ensure you have the latest versions of all documents you require. http://www.renesas.com/
Rev. 6.00 Sep. 24, 2009 Page vi of xlvi REJ09B0099-0600
H8S/2556, H8S/2552, H8S/2506 manuals:
Document Title H8S/2556, H8S/2552, H8S/2506 Group Hardware Manual H8S/2600 Series, H8S/2000 Series Software Manual Document No. This manual REJ09B0139
User's manuals for development tools:
Document Title H8S, H8/300 Series C/C++ Compiler, Assembler, Optimized Linkage Editor Compiler Package Ver.6.01 User's Manual H8S, H8/300 Series Simulator/Debugger User's Manual Document No. REJ10B0161 REJ10B0211
H8S, H8/300 Series High-performance Embedded Workshop User's Manual REJ10J2000
Rev. 6.00 Sep. 24, 2009 Page vii of xlvi REJ09B0099-0600
All trademarks and registered trademarks are the property of their respective owners.
Rev. 6.00 Sep. 24, 2009 Page viii of xlvi REJ09B0099-0600
Contents
Section 1 Overview..................................................................................................1
1.1 1.2 1.3 Features.................................................................................................................................. 1 Internal Block Diagram.......................................................................................................... 2 Pin Arrangements................................................................................................................... 6 1.3.1 Pin Arrangements ..................................................................................................... 6 1.3.2 Pin Arrangements in Each mode............................................................................. 11 1.3.3 Pin Functions .......................................................................................................... 17
Section 2 CPU........................................................................................................25
2.1 Features................................................................................................................................ 25 2.1.1 Differences between H8S/2600 CPU and H8S/2000 CPU ..................................... 26 2.1.2 Differences from H8/300 CPU ............................................................................... 27 2.1.3 Differences from H8/300H CPU............................................................................. 27 CPU Operating Modes......................................................................................................... 28 2.2.1 Normal Mode.......................................................................................................... 28 2.2.2 Advanced Mode...................................................................................................... 29 Address Space...................................................................................................................... 32 Register Configuration......................................................................................................... 33 2.4.1 General Registers.................................................................................................... 34 2.4.2 Program Counter (PC) ............................................................................................ 35 2.4.3 Extended Control Register (EXR) .......................................................................... 35 2.4.4 Condition-Code Register (CCR)............................................................................. 36 2.4.5 Initial Values of CPU Registers .............................................................................. 37 Data Formats........................................................................................................................ 38 2.5.1 General Register Data Formats ............................................................................... 38 2.5.2 Memory Data Formats ............................................................................................ 40 Instruction Set ...................................................................................................................... 40 2.6.1 Table of Instructions Classified by Function .......................................................... 42 2.6.2 Basic Instruction Formats ....................................................................................... 51 Addressing Modes and Effective Address Calculation........................................................ 52 2.7.1 Register DirectRn ............................................................................................... 53 2.7.2 Register Indirect@ERn ....................................................................................... 53 2.7.3 Register Indirect with Displacement@(d:16, ERn) or @(d:32, ERn)................. 53 2.7.4 Register Indirect with Post-Increment or Pre-Decrement@ERn+ or @-ERn..... 53 2.7.5 Absolute Address@aa:8, @aa:16, @aa:24, or @aa:32....................................... 54 2.7.6 Immediate#xx:8, #xx:16, or #xx:32.................................................................... 54
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2.2
2.3 2.4
2.5
2.6
2.7
2.8 2.9
2.7.7 Program-Counter Relative@(d:8, PC) or @(d:16, PC) ...................................... 55 2.7.8 Memory Indirect@@aa:8 ................................................................................... 55 2.7.9 Effective Address Calculation ................................................................................ 56 Processing States.................................................................................................................. 59 Usage Notes ......................................................................................................................... 61 2.9.1 TAS Instruction ...................................................................................................... 61 2.9.2 STM/LDM Instruction............................................................................................ 61 2.9.3 Bit Manipulation Instructions ................................................................................. 61 2.9.4 Access Method for Registers with Write-Only Bits ............................................... 63
Section 3 MCU Operating Modes ......................................................................... 67
3.1 3.2 Operating Mode Selection ................................................................................................... 67 Register Descriptions........................................................................................................... 68 3.2.1 Mode Control Register (MDCR) ............................................................................ 68 3.2.2 System Control Register (SYSCR)......................................................................... 68 Operating Mode ................................................................................................................... 70 3.3.1 Mode 6.................................................................................................................... 70 3.3.2 Mode 7.................................................................................................................... 70 3.3.3 Pin Functions .......................................................................................................... 70 Address Map in Each Operating Mode................................................................................ 72
3.3
3.4
Section 4 Exception Handling ............................................................................... 75
4.1 4.2 4.3 Exception Handling Types and Priority............................................................................... 75 Exception Sources and Exception Vector Table .................................................................. 75 Reset .................................................................................................................................... 77 4.3.1 Types of Reset ........................................................................................................ 77 4.3.2 Reset Exception Handling ...................................................................................... 78 4.3.3 Interrupts after Reset............................................................................................... 79 4.3.4 State of On-Chip Peripheral Modules after Reset Release ..................................... 79 Trace Exception Handling ................................................................................................... 79 Interrupt Exception Handling .............................................................................................. 80 Trap Instruction Exception Handling................................................................................... 80 Stack State after Exception Handling .................................................................................. 82 Usage Note........................................................................................................................... 82
4.4 4.5 4.6 4.7 4.8
Section 5 Interrupt Controller................................................................................ 85
5.1 5.2 5.3 Features................................................................................................................................ 85 Input/Output Pins................................................................................................................. 87 Register Descriptions........................................................................................................... 88 5.3.1 Interrupt Priority Registers A to M, and O (IPRA to IPRM, IPRO)....................... 89
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5.4
5.5
5.6
5.3.2 IRQ Enable Register (IER) ..................................................................................... 90 5.3.3 IRQ Sense Control Registers H and L (ISCRH and ISCRL) .................................. 91 5.3.4 IRQ Status Register (ISR)....................................................................................... 93 Interrupt Sources.................................................................................................................. 94 5.4.1 External Interrupts .................................................................................................. 94 5.4.2 Internal Interrupts ................................................................................................... 95 5.4.3 Interrupt Exception Handling Vector Table............................................................ 95 Operation ........................................................................................................................... 100 5.5.1 Interrupt Control Modes and Interrupt Operation ................................................. 100 5.5.2 Interrupt Control Mode 0 ...................................................................................... 103 5.5.3 Interrupt Control Mode 2 ...................................................................................... 105 5.5.4 Interrupt Exception Handling Sequence ............................................................... 107 5.5.5 Interrupt Response Times ..................................................................................... 109 5.5.6 DTC Activation by Interrupt................................................................................. 110 Usage Notes ....................................................................................................................... 112 5.6.1 Contention between Interrupt Generation and Disabling...................................... 112 5.6.2 Instructions That Disable Interrupts...................................................................... 113 5.6.3 When Interrupts Are Disabled .............................................................................. 113 5.6.4 Interrupts during Execution of EEPMOV Instruction........................................... 114 5.6.5 IRQ Interrupt ........................................................................................................ 114 5.6.6 NMI Interrupt Usage Notes .................................................................................. 114
Section 6 PC Break Controller (PBC) .................................................................115
6.1 6.2 Features.............................................................................................................................. 115 Register Descriptions ......................................................................................................... 116 6.2.1 Break Address Register A (BARA) ...................................................................... 116 6.2.2 Break Address Register B (BARB) ...................................................................... 117 6.2.3 Break Control Register A (BCRA) ....................................................................... 117 6.2.4 Break Control Register B (BCRB)........................................................................ 118 Operation ........................................................................................................................... 118 6.3.1 PC Break Interrupt Due to Instruction Fetch ........................................................ 118 6.3.2 PC Break Interrupt Due to Data Access................................................................ 119 6.3.3 Notes on PC Break Interrupt Handling ................................................................. 119 6.3.4 Operation in Transitions to Power-Down Modes ................................................. 119 6.3.5 When Instruction Execution Is Delayed by One State.......................................... 120 Usage Notes ....................................................................................................................... 121 6.4.1 Module Stop Mode Setting ................................................................................... 121 6.4.2 PC Break Interrupts .............................................................................................. 121 6.4.3 CMFA and CMFB ................................................................................................ 121 6.4.4 PC Break Interrupt when DTC Is Bus Master ...................................................... 121
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6.3
6.4
6.4.5 6.4.6 6.4.7 6.4.8
PC Break Set for Instruction Fetch at Address Following BSR, JSR, JMP, TRAPA, RTE, or RTS Instruction....................................................................................... 121 I Bit Set by LDC, ANDC, ORC, or XORC Instruction ........................................ 121 PC Break Set for Instruction Fetch at Address Following Bcc Instruction........... 122 PC Break Set for Instruction Fetch at Branch Destination Address of Bcc Instruction............................................................................................................. 122
Section 7 Bus Controller ..................................................................................... 123
Features.............................................................................................................................. 123 Input/Output Pins............................................................................................................... 125 Register Descriptions......................................................................................................... 125 7.3.1 Bus Width Control Register (ABWCR) ............................................................... 126 7.3.2 Access State Control Register (ASTCR) .............................................................. 126 7.3.3 Wait Control Registers H and L (WCRH, WCRL)............................................... 127 7.3.4 Bus Control Register H (BCRH) .......................................................................... 130 7.3.5 Bus Control Register L (BCRL) ........................................................................... 131 7.3.6 Pin Function Control Register (PFCR) ................................................................. 132 7.4 Bus Control........................................................................................................................ 134 7.4.1 Area Divisions ...................................................................................................... 134 7.4.2 Bus Specifications ................................................................................................ 135 7.4.3 Bus Interface for Each Area.................................................................................. 136 7.4.4 Chip Select Signals ............................................................................................... 137 7.5 Basic Timing...................................................................................................................... 139 7.5.1 On-Chip Memory (ROM, RAM) Access Timing ................................................. 139 7.5.2 On-Chip Peripheral Module Access Timing......................................................... 140 7.5.3 External Address Space Access Timing ............................................................... 144 7.6 Basic Bus Interface ............................................................................................................ 145 7.6.1 Data Size and Data Alignment.............................................................................. 145 7.6.2 Valid Strobes ........................................................................................................ 146 7.6.3 Basic Timing......................................................................................................... 147 7.6.4 Wait Control ......................................................................................................... 155 7.7 Burst ROM Interface ......................................................................................................... 157 7.7.1 Basic Timing......................................................................................................... 157 7.7.2 Wait Control ......................................................................................................... 159 7.8 Idle Cycle........................................................................................................................... 160 7.9 Bus Release........................................................................................................................ 163 7.9.1 Usage Note for Bus Mastership Release............................................................... 164 7.10 Bus Arbitration .................................................................................................................. 165 7.10.1 Operation .............................................................................................................. 165 7.10.2 Bus Mastership Transfer Timing .......................................................................... 165
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7.1 7.2 7.3
7.10.3 Usage Note for External Bus Mastership Release ................................................ 166 7.11 Resets and the Bus Controller............................................................................................ 166
Section 8 Data Transfer Controller (DTC) ..........................................................167
8.1 8.2 Features.............................................................................................................................. 167 Register Descriptions ......................................................................................................... 169 8.2.1 DTC Mode Register A (MRA) ............................................................................. 170 8.2.2 DTC Mode Register B (MRB).............................................................................. 171 8.2.3 DTC Source Address Register (SAR)................................................................... 172 8.2.4 DTC Destination Address Register (DAR)........................................................... 172 8.2.5 DTC Transfer Count Register A (CRA) ............................................................... 172 8.2.6 DTC Transfer Count Register B (CRB)................................................................ 172 8.2.7 DTC Enable Registers A to G, and I (DTCERA to DTCERG, and DTCERI) ..... 172 8.2.8 DTC Vector Register (DTVECR)......................................................................... 173 Activation Sources ............................................................................................................. 174 Location of Register Information and DTC Vector Table ................................................. 176 Operation ........................................................................................................................... 180 8.5.1 Normal Mode........................................................................................................ 181 8.5.2 Repeat Mode ......................................................................................................... 182 8.5.3 Block Transfer Mode ............................................................................................ 183 8.5.4 Chain Transfer ...................................................................................................... 185 8.5.5 Interrupts............................................................................................................... 186 8.5.6 Operation Timing.................................................................................................. 186 8.5.7 Number of DTC Execution States ........................................................................ 187 Procedures for Using DTC................................................................................................. 189 8.6.1 Activation by Interrupt.......................................................................................... 189 8.6.2 Activation by Software ......................................................................................... 189 Examples of Use of the DTC ............................................................................................. 190 8.7.1 Normal Mode........................................................................................................ 190 8.7.2 Software Activation .............................................................................................. 190 Usage Notes ....................................................................................................................... 191 8.8.1 Module Stop Mode Setting ................................................................................... 191 8.8.2 On-Chip RAM ...................................................................................................... 191 8.8.3 DTCE Bit Setting.................................................................................................. 191
8.3 8.4 8.5
8.6
8.7
8.8
Section 9 I/O Ports ...............................................................................................193
9.1 Port 1.................................................................................................................................. 199 9.1.1 Port 1 Data Direction Register (P1DDR).............................................................. 199 9.1.2 Port 1 Data Register (P1DR)................................................................................. 200 9.1.3 Port 1 Register (PORT1)....................................................................................... 200
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9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.1.4 Pin Functions ........................................................................................................ 200 Port 2.................................................................................................................................. 205 9.2.1 Port 2 Data Direction Register (P2DDR).............................................................. 205 9.2.2 Port 2 Data Register (P2DR) ................................................................................ 206 9.2.3 Port 2 Register (PORT2)....................................................................................... 206 9.2.4 Pin Functions ........................................................................................................ 207 Port 3.................................................................................................................................. 210 9.3.1 Port 3 Data Direction Register (P3DDR).............................................................. 210 9.3.2 Port 3 Data Register (P3DR) ................................................................................ 211 9.3.3 Port 3 Register (PORT3)....................................................................................... 211 9.3.4 Port 3 Open Drain Control Register (P3ODR) ..................................................... 212 9.3.5 Pin Functions ........................................................................................................ 212 Port 4.................................................................................................................................. 216 9.4.1 Port 4 Register (PORT4)....................................................................................... 216 9.4.2 Pin Functions ........................................................................................................ 216 Port 5.................................................................................................................................. 217 9.5.1 Port 5 Data Direction Register (P5DDR).............................................................. 217 9.5.2 Port 5 Data Register (P5DR) ................................................................................ 217 9.5.3 Port 5 Register (PORT5)....................................................................................... 218 9.5.4 Pin Functions ........................................................................................................ 218 Port 7.................................................................................................................................. 219 9.6.1 Port 7 Data Direction Register (P7DDR).............................................................. 219 9.6.2 Port 7 Data Register (P7DR) ................................................................................ 220 9.6.3 Port 7 Register (PORT7)....................................................................................... 220 9.6.4 Pin Functions ........................................................................................................ 221 Port 9.................................................................................................................................. 224 9.7.1 Port 9 Register (PORT9)....................................................................................... 224 9.7.2 Pin Functions ........................................................................................................ 224 Port A................................................................................................................................. 226 9.8.1 Port A Data Direction Register (PADDR)............................................................ 226 9.8.2 Port A Data Register (PADR)............................................................................... 227 9.8.3 Port A Register (PORTA)..................................................................................... 227 9.8.4 Port A Pull-Up MOS Control Register (PAPCR) ................................................. 228 9.8.5 Port A Open Drain Control Register (PAODR).................................................... 228 9.8.6 Pin Functions ........................................................................................................ 229 9.8.7 Input Pull-Up MOS Function (Port A) ................................................................. 232 Port B ................................................................................................................................. 232 9.9.1 Port B Data Direction Register (PBDDR) ............................................................ 233 9.9.2 Port B Data Register (PBDR) ............................................................................... 233 9.9.3 Port B Register (PORTB) ..................................................................................... 234
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9.10
9.11
9.12
9.13
9.14
9.15
9.16
9.9.4 Port B Pull-Up MOS Control Register (PBPCR) ................................................. 234 9.9.5 Pin Functions ........................................................................................................ 235 9.9.6 Input Pull-Up MOS Function (Port B).................................................................. 238 Port C ................................................................................................................................. 239 9.10.1 Port C Data Direction Register (PCDDR) ............................................................ 239 9.10.2 Port C Data Register (PCDR) ............................................................................... 240 9.10.3 Port C Register (PORTC) ..................................................................................... 240 9.10.4 Port C Pull-Up MOS Control Register (PCPCR) ................................................. 241 9.10.5 Pin Functions ........................................................................................................ 241 9.10.6 Input Pull-Up MOS Function (Port C).................................................................. 242 Port D................................................................................................................................. 243 9.11.1 Port D Data Direction Register (PDDDR) ............................................................ 243 9.11.2 Port D Data Register (PDDR)............................................................................... 244 9.11.3 Port D Register (PORTD)..................................................................................... 244 9.11.4 Port D Pull-Up MOS Control Register (PDPCR) ................................................. 245 9.11.5 Pin Functions ........................................................................................................ 245 9.11.6 Input Pull-Up MOS Function (Port D) ................................................................. 246 Port E ................................................................................................................................. 247 9.12.1 Port E Data Direction Register (PEDDR)............................................................. 247 9.12.2 Port E Data Register (PEDR)................................................................................ 248 9.12.3 Port E Register (PORTE)...................................................................................... 248 9.12.4 Port E Pull-Up MOS Control Register (PEPCR) .................................................. 249 9.12.5 Pin Functions ........................................................................................................ 249 9.12.6 Input Pull-Up MOS Function (Port E).................................................................. 250 Port F ................................................................................................................................. 251 9.13.1 Port F Data Direction Register (PFDDR) ............................................................. 251 9.13.2 Port F Data Register (PFDR) ................................................................................ 252 9.13.3 Port F Register (PORTF) ...................................................................................... 252 9.13.4 Pin Functions ........................................................................................................ 253 Port G................................................................................................................................. 255 9.14.1 Port G Data Direction Register (PGDDR) ............................................................ 255 9.14.2 Port G Data Register (PGDR)............................................................................... 256 9.14.3 Port G Register (PORTG)..................................................................................... 256 9.14.4 Pin Functions ........................................................................................................ 257 Port H................................................................................................................................. 258 9.15.1 Port H Data Direction Register (PHDDR) ............................................................ 259 9.15.2 Port H Data Register (PHDR)............................................................................... 259 9.15.3 Port H Register (PORTH)..................................................................................... 260 9.15.4 Pin Functions ........................................................................................................ 260 Port J .................................................................................................................................. 261
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9.16.1 Port J Data Direction Register (PJDDR)............................................................... 261 9.16.2 Port J Data Register (PJDR) ................................................................................. 262 9.16.3 Port J Register (PORTJ) ....................................................................................... 262 9.16.4 Pin Functions ........................................................................................................ 263 9.17 Power Supply Pin Control ................................................................................................. 264 9.17.1 IC Power Control Register (ICPCR)..................................................................... 264 9.18 Handling of Unused Pins ................................................................................................... 265
Section 10 16-Bit Timer Pulse Unit (TPU) ......................................................... 267
10.1 Features.............................................................................................................................. 267 10.2 Input/Output Pins............................................................................................................... 271 10.3 Register Descriptions......................................................................................................... 273 10.3.1 Timer Control Register (TCR).............................................................................. 276 10.3.2 Timer Mode Register (TMDR)............................................................................. 281 10.3.3 Timer I/O Control Register (TIOR)...................................................................... 282 10.3.4 Timer Interrupt Enable Register (TIER)............................................................... 300 10.3.5 Timer Status Register (TSR)................................................................................. 302 10.3.6 Timer Counter (TCNT)......................................................................................... 305 10.3.7 Timer General Register (TGR) ............................................................................. 305 10.3.8 Timer Start Register (TSTR) ................................................................................ 305 10.3.9 Timer Synchro Register (TSYR) .......................................................................... 306 10.4 Operation ........................................................................................................................... 307 10.4.1 Basic Functions..................................................................................................... 307 10.4.2 Synchronous Operation......................................................................................... 313 10.4.3 Buffer Operation................................................................................................... 315 10.4.4 Cascaded Operation .............................................................................................. 318 10.4.5 PWM Modes......................................................................................................... 320 10.4.6 Phase Counting Mode........................................................................................... 325 10.5 Interrupts............................................................................................................................ 332 10.6 DTC Activation.................................................................................................................. 334 10.7 A/D Converter Activation.................................................................................................. 334 10.8 Operation Timing............................................................................................................... 335 10.8.1 Input/Output Timing............................................................................................. 335 10.8.2 Interrupt Signal Timing ........................................................................................ 339 10.9 Usage Notes ....................................................................................................................... 343 10.9.1 Module Stop Mode Setting ................................................................................... 343 10.9.2 Input Clock Restrictions ....................................................................................... 343 10.9.3 Caution on Period Setting ..................................................................................... 344 10.9.4 Contention between TCNT Write and Clear Operations...................................... 344 10.9.5 Contention between TCNT Write and Increment Operations............................... 345
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10.9.6 Contention between TGR Write and Compare Match .......................................... 346 10.9.7 Contention between Buffer Register Write and Compare Match ......................... 347 10.9.8 Contention between TGR Read and Input Capture............................................... 348 10.9.9 Contention between TGR Write and Input Capture.............................................. 349 10.9.10 Contention between Buffer Register Write and Input Capture ............................. 350 10.9.11 Contention between Overflow/Underflow and Counter Clearing......................... 351 10.9.12 Contention between TCNT Write and Overflow/Underflow................................ 352 10.9.13 Multiplexing of I/O Pins ....................................................................................... 352 10.9.14 Interrupts in Module Stop Mode........................................................................... 352
Section 11 8-Bit Timers (TMR)...........................................................................353
11.1 Features.............................................................................................................................. 353 11.2 Input/Output Pins ............................................................................................................... 355 11.3 Register Descriptions ......................................................................................................... 355 11.3.1 Timer Counter (TCNT)......................................................................................... 356 11.3.2 Time Constant Register A (TCORA).................................................................... 356 11.3.3 Time Constant Register B (TCORB) .................................................................... 357 11.3.4 Timer Control Register (TCR).............................................................................. 357 11.3.5 Timer Control/Status Register (TCSR)................................................................. 359 11.4 Operation ........................................................................................................................... 364 11.4.1 Pulse Output.......................................................................................................... 364 11.5 Operation Timing............................................................................................................... 365 11.5.1 TCNT Incrementation Timing .............................................................................. 365 11.5.2 Timing of CMFA and CMFB Setting When a Compare-Match Occurs............... 366 11.5.3 Timing of Timer Output When a Compare-Match Occurs ................................... 366 11.5.4 Timing of Compare-Match Clear When a Compare-Match Occurs ..................... 367 11.5.5 TCNT External Reset Timing............................................................................... 367 11.5.6 Timing of Overflow Flag (OVF) Setting .............................................................. 368 11.6 Operation with Cascaded Connection................................................................................ 369 11.6.1 16-Bit Count Mode ............................................................................................... 369 11.6.2 Compare-Match Count Mode ............................................................................... 369 11.7 Interrupt Sources................................................................................................................ 370 11.7.1 Interrupt Sources and DTC Activation ................................................................. 370 11.7.2 A/D Converter Activation..................................................................................... 370 11.8 Usage Notes ....................................................................................................................... 371 11.8.1 Setting Module Stop Mode ................................................................................... 371 11.8.2 Contention between TCNT Write and Clear......................................................... 371 11.8.3 Contention between TCNT Write and Increment ................................................. 372 11.8.4 Contention between TCOR Write and Compare-Match ....................................... 373 11.8.5 Contention between Compare-Matches A and B.................................................. 373
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11.8.6 Switching of Internal Clocks and TCNT Operation ............................................. 374 11.8.7 Contention between Interrupts and Module Stop Mode ....................................... 376 11.8.8 Mode Setting in Cascading ................................................................................... 376
Section 12 Watchdog Timer (WDT) ................................................................... 377
12.1 Features.............................................................................................................................. 377 12.2 Input/Output Pin ................................................................................................................ 379 12.3 Register Descriptions......................................................................................................... 380 12.3.1 Timer Counter (TCNT)......................................................................................... 380 12.3.2 Timer Control/Status Register .............................................................................. 380 12.3.3 Reset Control/Status Register (RSTCSR) (WDT_0 only) .................................... 385 12.4 Operation ........................................................................................................................... 386 12.4.1 Watchdog Timer Mode......................................................................................... 386 12.4.2 Interval Timer Mode............................................................................................. 387 12.4.3 Timing of Setting Overflow Flag (OVF) .............................................................. 388 12.4.4 Timing of Setting Watchdog Timer Overflow Flag (WOVF) .............................. 389 12.5 Interrupt Sources................................................................................................................ 389 12.6 Usage Notes ....................................................................................................................... 390 12.6.1 Notes on Register Access ..................................................................................... 390 12.6.2 Contention between Timer Counter (TCNT) Write and Increment ...................... 392 12.6.3 Changing Value of PSS or CKS2 to CKS0........................................................... 392 12.6.4 Switching between Watchdog Timer Mode and Interval Timer Mode................. 392 12.6.5 Internal Reset in Watchdog Timer Mode.............................................................. 393 12.6.6 OVF Flag Clearing in Interval Timer Mode ......................................................... 393 12.6.7 Initialization of TCNT by the TME Bit ................................................................ 393
Section 13 Serial Communication Interface (SCI).............................................. 395
13.1 Features.............................................................................................................................. 395 13.2 Input/Output Pins............................................................................................................... 397 13.3 Register Descriptions......................................................................................................... 398 13.3.1 Receive Shift Register (RSR) ............................................................................... 399 13.3.2 Receive Data Register (RDR)............................................................................... 399 13.3.3 Transmit Data Register (TDR).............................................................................. 400 13.3.4 Transmit Shift Register (TSR) .............................................................................. 400 13.3.5 Serial Mode Register (SMR) ................................................................................ 400 13.3.6 Serial Control Register (SCR) .............................................................................. 405 13.3.7 Serial Status Register (SSR) ................................................................................. 410 13.3.8 Smart Card Mode Register (SCMR)..................................................................... 417 13.3.9 Bit Rate Register (BRR) ....................................................................................... 418 13.4 Operation in Asynchronous Mode ..................................................................................... 425
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13.5
13.6
13.7
13.8
13.9
13.4.1 Data Transfer Format............................................................................................ 425 13.4.2 Receive Data Sampling Timing and Reception Margin in Asynchronous Mode ..................................................................................................................... 427 13.4.3 Clock..................................................................................................................... 428 13.4.4 SCI Initialization (Asynchronous Mode) .............................................................. 428 13.4.5 Serial Data Transmission (Asynchronous Mode) ................................................. 430 13.4.6 Serial Data Reception (Asynchronous Mode)....................................................... 432 Multiprocessor Communication Function.......................................................................... 436 13.5.1 Multiprocessor Serial Data Transmission ............................................................. 438 13.5.2 Multiprocessor Serial Data Reception .................................................................. 440 Operation in Clocked Synchronous Mode ......................................................................... 444 13.6.1 Clock..................................................................................................................... 444 13.6.2 SCI Initialization (Clocked Synchronous Mode) .................................................. 445 13.6.3 Serial Data Transmission (Clocked Synchronous Mode) ..................................... 446 13.6.4 Serial Data Reception (Clocked Synchronous Mode)........................................... 449 13.6.5 Simultaneous Serial Data Transmission and Reception (Clocked Synchronous Mode).................................................................................................................... 451 Operation in Smart Card Interface ..................................................................................... 453 13.7.1 Pin Connection Example....................................................................................... 453 13.7.2 Data Format (Except for Block Transfer Mode)................................................... 454 13.7.3 Block Transfer Mode ............................................................................................ 455 13.7.4 Receive Data Sampling Timing and Reception Margin........................................ 456 13.7.5 Initialization .......................................................................................................... 457 13.7.6 Serial Data Transmission (Except for Block Transfer Mode)............................... 458 13.7.7 Serial Data Reception (Except for Block Transfer Mode) .................................... 461 13.7.8 Clock Output Control............................................................................................ 462 Interrupt Sources................................................................................................................ 464 13.8.1 Interrupts in Normal Serial Communication Interface Mode ............................... 464 13.8.2 Interrupts in Smart Card Interface Mode .............................................................. 466 Usage Notes ....................................................................................................................... 467 13.9.1 Module Stop Mode Setting ................................................................................... 467 13.9.2 Break Detection and Processing (Asynchronous Mode Only).............................. 467 13.9.3 Mark State and Break Detection (Asynchronous Mode Only) ............................. 467 13.9.4 Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only) ..................................................................... 467 13.9.5 Restrictions on Use of DTC.................................................................................. 467 13.9.6 Operation in Case of Mode Transition.................................................................. 468 13.9.7 Notes when Switching from SCK Pin to Port Pin................................................. 471
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Section 14 I2C Bus Interface 2 (IIC2).................................................................. 475
14.1 Features.............................................................................................................................. 475 14.2 Input/Output Pins............................................................................................................... 478 14.3 Register Descriptions......................................................................................................... 479 14.3.1 I2C Bus Control Register 1 (ICCR1)..................................................................... 479 14.3.2 I2C Bus Control Register 2 (ICCR2)..................................................................... 482 14.3.3 I2C Bus Mode Register (ICMR)............................................................................ 483 14.3.4 I2C Bus Interrupt Enable Register (ICIER)........................................................... 486 14.3.5 I2C Bus Status Register (ICSR)............................................................................. 488 14.3.6 Slave Address Register (SAR).............................................................................. 490 14.3.7 I2C Bus Transmit Data Register (ICDRT) ............................................................ 491 14.3.8 I2C Bus Receive Data Register (ICDRR).............................................................. 491 14.3.9 I2C Bus Shift Register (ICDRS)............................................................................ 491 14.4 Operation ........................................................................................................................... 492 14.4.1 I2C Bus Format...................................................................................................... 492 14.4.2 Master Transmit Operation................................................................................... 493 14.4.3 Master Receive Operation .................................................................................... 495 14.4.4 Slave Transmit Operation ..................................................................................... 497 14.4.5 Slave Receive Operation....................................................................................... 499 14.4.6 Clocked Synchronous Serial Format .................................................................... 501 14.4.7 Noise Canceler...................................................................................................... 503 14.4.8 Example of Use..................................................................................................... 504 14.5 Interrupt Request................................................................................................................ 509 14.6 Bit Synchronous Circuit..................................................................................................... 510 14.7 Note on Usage.................................................................................................................... 511 14.7.1 Setting Module Stop Mode ................................................................................... 511 14.7.2 Issuance of Stop and Repeated Start Conditions................................................... 511 14.7.3 WAIT Bit in I2C Bus Mode Register (ICMR) ...................................................... 511 14.7.4 Usage Note on Master Receive Mode................................................................... 512 14.7.5 Restriction on Setting of Transfer Rate in Use of Multi-Master........................... 512 14.7.6 Restriction on Use of Bit Manipulation Instructions to Set MST and TRS when Multi-Master Is Used ............................................................................................ 512
Section 15 A/D Converter ................................................................................... 513
15.1 Features.............................................................................................................................. 513 15.2 Input/Output Pins............................................................................................................... 515 15.3 Register Descriptions......................................................................................................... 516 15.3.1 A/D Data Registers A to D (ADDRA to ADDRD) .............................................. 516 15.3.2 A/D Control/Status Register (ADCSR) ................................................................ 517
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15.4 15.5
15.6 15.7 15.8
15.3.3 A/D Control Register (ADCR) ............................................................................. 520 Interface to Bus Master ...................................................................................................... 521 Operation ........................................................................................................................... 522 15.5.1 Single Mode.......................................................................................................... 522 15.5.2 Scan Mode ............................................................................................................ 523 15.5.3 Input Sampling and A/D Conversion Time .......................................................... 524 15.5.4 External Trigger Input Timing.............................................................................. 526 Interrupt Source ................................................................................................................. 527 A/D Conversion Accuracy Definitions .............................................................................. 527 Usage Notes ....................................................................................................................... 529 15.8.1 Module Stop Mode Setting ................................................................................... 529 15.8.2 Permissible Signal Source Impedance .................................................................. 529 15.8.3 Influences on Absolute Accuracy ......................................................................... 529 15.8.4 Range of Analog Power Supply and Other Pin Settings....................................... 530 15.8.5 Notes on Board Design ......................................................................................... 530 15.8.6 Notes on Noise Countermeasures ......................................................................... 530
Section 16 D/A Converter....................................................................................533
16.1 Features.............................................................................................................................. 533 16.2 Input/Output Pins ............................................................................................................... 534 16.3 Register Descriptions ......................................................................................................... 534 16.3.1 D/A Data Registers 0, 1 (DADR0, DADR1) ........................................................ 534 16.3.2 D/A Control Register (DACR) ............................................................................. 535 16.4 Operation ........................................................................................................................... 536 16.5 Usage Notes ....................................................................................................................... 537 16.5.1 Analog Power Supply Current in Power-Down Mode.......................................... 537 16.5.2 Setting for Module Stop Mode ............................................................................. 537
Section 17 IEBusTM Controller (IEB) [H8S/2552 Group] ...................................539
17.1 Features.............................................................................................................................. 539 17.1.1 IEBus Communications Protocol.......................................................................... 541 17.1.2 Communications Protocol..................................................................................... 543 17.1.3 Transfer Data (Data Field Contents)..................................................................... 551 17.1.4 Bit Format............................................................................................................. 555 17.2 Input/Output Pins ............................................................................................................... 556 17.3 Register Descriptions ......................................................................................................... 556 17.3.1 IEBus Control Register (IECTR).......................................................................... 557 17.3.2 IEBus Command Register (IECMR) .................................................................... 560 17.3.3 IEBus Master Control Register (IEMCR)............................................................. 561 17.3.4 IEBus Master Unit Address Register 1 (IEAR1) .................................................. 563
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17.3.5 IEBus Master Unit Address Register 2 (IEAR2) .................................................. 564 17.3.6 IEBus Slave Address Setting Register 1 (IESA1)................................................. 564 17.3.7 IEBus Slave Address Setting Register 2 (IESA2)................................................. 565 17.3.8 IEBus Transmit Message Length Register (IETBFL) .......................................... 565 17.3.9 IEBus Transmit Buffer Register (IETBR) ............................................................ 566 17.3.10 IEBus Reception Master Address Register 1 (IEMA1) ........................................ 567 17.3.11 IEBus Reception Master Address Register 2 (IEMA2) ........................................ 568 17.3.12 IEBus Receive Control Field Register (IERCTL) ................................................ 568 17.3.13 IEBus Receive Message Length Register (IERBFL)............................................ 569 17.3.14 IEBus Receive Buffer Register (IERBR).............................................................. 570 17.3.15 IEBus Lock Address Register 1 (IELA1) ............................................................. 571 17.3.16 IEBus Lock Address Register 2 (IELA2) ............................................................. 571 17.3.17 IEBus General Flag Register (IEFLG) ................................................................. 572 17.3.18 IEBus Transmit/Runaway Status Register (IETSR) ............................................. 576 17.3.19 IEBus Transmit/Runaway Interrupt Enable Register (IEIET) .............................. 579 17.3.20 IEBus Transmit Error Flag Register (IETEF)....................................................... 580 17.3.21 IEBus Receive Status Register (IERSR)............................................................... 583 17.3.22 IEBus Receive Interrupt Enable Register (IEIER)................................................ 585 17.3.23 IEBus Receive Error Flag Register (IEREF) ........................................................ 586 17.4 Operation Descriptions ...................................................................................................... 589 17.4.1 Master Transmit Operation................................................................................... 589 17.4.2 Slave Receive Operation....................................................................................... 591 17.4.3 Master Reception .................................................................................................. 596 17.4.4 Slave Transmission............................................................................................... 599 17.5 Interrupt Sources................................................................................................................ 602 17.6 Usage Notes ....................................................................................................................... 603 17.6.1 Setting Module Stop Mode ................................................................................... 603 17.6.2 TxRDY Flag and Underrun Error ......................................................................... 603 17.6.3 RxRDY Flag and Overrun Error........................................................................... 604 17.6.4 Error Flag s in the IETEF ..................................................................................... 604 17.6.5 Error Flags in IEREF ............................................................................................ 605 17.6.6 Notes on Slave Transmission................................................................................ 606 17.6.7 Notes on DTC Specification ................................................................................. 607 17.6.8 Error Handling in Transmission............................................................................ 607 17.6.9 Power-Down Mode Operation.............................................................................. 608 17.6.10 Notes on Middle-Speed Mode .............................................................................. 608 17.6.11 Notes on Register Access ..................................................................................... 608
Section 18 Controller Area Network (HCAN) [H8S/2556 Group].................... 609
18.1 Features.............................................................................................................................. 609
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18.2 Input/Output Pins ............................................................................................................... 611 18.3 Register Descriptions ......................................................................................................... 611 18.3.1 Master Control Register (MCR) ........................................................................... 612 18.3.2 General Status Register (GSR) ............................................................................. 613 18.3.3 Bit Configuration Register (BCR) ........................................................................ 615 18.3.4 Mailbox Configuration Register (MBCR) ............................................................ 617 18.3.5 Transmit Wait Register (TXPR) ........................................................................... 618 18.3.6 Transmit Wait Cancel Register (TXCR)............................................................... 619 18.3.7 Transmit Acknowledge Register (TXACK) ......................................................... 620 18.3.8 Abort Acknowledge Register (ABACK) .............................................................. 621 18.3.9 Receive Complete Register (RXPR)..................................................................... 622 18.3.10 Remote Request Register (RFPR)......................................................................... 623 18.3.11 Interrupt Register (IRR)........................................................................................ 624 18.3.12 Mailbox Interrupt Mask Register (MBIMR)......................................................... 628 18.3.13 Interrupt Mask Register (IMR) ............................................................................. 628 18.3.14 Receive Error Counter (REC)............................................................................... 630 18.3.15 Transmit Error Counter (TEC).............................................................................. 630 18.3.16 Unread Message Status Register (UMSR)............................................................ 630 18.3.17 Local Acceptance Filter Masks (LAFML, LAFMH)............................................ 631 18.3.18 Message Control (MC0 to MC15) ........................................................................ 634 18.3.19 Message Data (MD0 to MD15) ............................................................................ 636 18.4 Operation ........................................................................................................................... 637 18.4.1 Hardware and Software Resets ............................................................................. 637 18.4.2 Initialization after Hardware Reset ....................................................................... 637 18.4.3 Message Transmission .......................................................................................... 643 18.4.4 Message Reception ............................................................................................... 647 18.4.5 HCAN Sleep Mode............................................................................................... 651 18.4.6 HCAN Halt Mode................................................................................................. 653 18.5 Interrupts............................................................................................................................ 654 18.6 DTC Interface .................................................................................................................... 655 18.7 CAN Bus Interface............................................................................................................. 656 18.8 Usage Notes ....................................................................................................................... 656 18.8.1 Module Stop Mode Setting ................................................................................... 656 18.8.2 Reset ..................................................................................................................... 656 18.8.3 HCAN Sleep Mode............................................................................................... 657 18.8.4 Interrupts............................................................................................................... 657 18.8.5 Error Counters....................................................................................................... 657 18.8.6 Register Access..................................................................................................... 657 18.8.7 HCAN Medium-Speed Mode ............................................................................... 657 18.8.8 Register Hold in Standby Modes and Watch Mode.............................................. 657
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18.8.9 Usage of Bit Change Instructions ......................................................................... 658 18.8.10 HCAN TXCR Operation ...................................................................................... 658 18.8.11 HCAN Transmit Procedure .................................................................................. 659 18.8.12 Canceling HCAN Software Reset or HCAN Sleep Mode .................................... 661 18.8.13 Accessing Mailboxes in HCAN Sleep Mode........................................................ 661
Section 19 RAM .................................................................................................. 663 Section 20 Flash Memory.................................................................................... 665
20.1 Features.............................................................................................................................. 665 20.1.1 Block Diagram...................................................................................................... 667 20.1.2 Operating Mode .................................................................................................... 668 20.1.3 Mode Comparison ................................................................................................ 670 20.1.4 Flash MAT Configuration .................................................................................... 671 20.1.5 Block Division ...................................................................................................... 672 20.1.6 Programming/Erasing Interface ............................................................................ 673 20.2 Pin Configuration............................................................................................................... 675 20.3 Register Descriptions......................................................................................................... 676 20.3.1 Programming/Erasing Interface Register.............................................................. 677 20.3.2 Programming/Erasing Interface Parameter........................................................... 684 20.3.3 RAM Emulation Register (RAMER).................................................................... 696 20.3.4 Flash Vector Address Control Register (FVACR)................................................ 697 20.3.5 Flash Vector Address Data Register (FVADR) .................................................... 698 20.4 On-Board Programming Mode .......................................................................................... 699 20.4.1 Boot Mode ............................................................................................................ 699 20.4.2 User Program Mode.............................................................................................. 703 20.4.3 User Boot Mode.................................................................................................... 714 20.4.4 Procedure Program and Storable Area for Programming Data............................. 718 20.5 Protection........................................................................................................................... 726 20.5.1 Hardware Protection ............................................................................................. 726 20.5.2 Software Protection .............................................................................................. 727 20.5.3 Error Protection .................................................................................................... 727 20.6 Flash Memory Emulation in RAM .................................................................................... 729 20.7 Switching between User MAT and User Boot MAT......................................................... 732 20.8 Usage Notes ....................................................................................................................... 733 20.9 Programmer Mode ............................................................................................................. 734 20.9.1 Pin Arrangement of Socket Adapter ..................................................................... 734 20.9.2 Programmer Mode Operation ............................................................................... 736 20.9.3 Memory-Read Mode............................................................................................. 737 20.9.4 Auto-Program Mode ............................................................................................. 738
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20.9.5 Auto-Erase Mode.................................................................................................. 738 20.9.6 Status-Read Mode................................................................................................. 739 20.9.7 Status Polling ........................................................................................................ 739 20.9.8 Transition Time to Programmer Mode ................................................................. 740 20.9.9 Notes on Programmer Mode................................................................................. 740 20.10 Serial Communication Interface Specification for Boot Mode.......................................... 741 20.11 AC Characteristics and Timing in Programmer Mode....................................................... 767
Section 21 Clock Pulse Generator .......................................................................775
21.1 Register Descriptions ......................................................................................................... 776 21.1.1 System Clock Control Register (SCKCR) ............................................................ 776 21.1.2 Low-Power Control Register (LPWRCR) ............................................................ 777 21.2 System Clock Oscillator..................................................................................................... 780 21.2.1 Connecting Crystal Resonator .............................................................................. 780 21.2.2 External Clock Input............................................................................................. 781 21.2.3 Notes on Switching External Clock ...................................................................... 783 21.3 PLL Circuit ........................................................................................................................ 784 21.4 Medium-Speed Clock Divider ........................................................................................... 785 21.5 Bus Master Clock Selection Circuit................................................................................... 785 21.6 System Clock with IEBus .................................................................................................. 785 21.7 Subclock Oscillator............................................................................................................ 786 21.7.1 Connecting 32.768-kHz Crystal Resonator........................................................... 786 21.7.2 Handling Pins when Subclock Is Not Used .......................................................... 787 21.8 Subclock Waveform Generation Circuit............................................................................ 787 21.9 Usage Notes ....................................................................................................................... 788 21.9.1 Note on Crystal Resonator .................................................................................... 788 21.9.2 Note on Board Design........................................................................................... 788
Section 22 Power-Down Modes ..........................................................................791
22.1 Register Descriptions ......................................................................................................... 795 22.1.1 Standby Control Register (SBYCR) ..................................................................... 796 22.1.2 Module Stop Control Registers A to C (MSTPCRA to MSTPCRC).................... 797 22.2 Medium-Speed Mode......................................................................................................... 799 22.3 Sleep Mode ........................................................................................................................ 800 22.3.1 Transition to Sleep Mode...................................................................................... 800 22.3.2 Clearing Sleep Mode ............................................................................................ 800 22.4 Software Standby Mode..................................................................................................... 801 22.4.1 Transition to Software Standby Mode .................................................................. 801 22.4.2 Clearing Software Standby Mode ......................................................................... 801 22.4.3 Oscillation Settling Time after Clearing Software Standby Mode........................ 802
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22.5
22.6 22.7
22.8 22.9
22.4.4 Software Standby Mode Application Example..................................................... 802 Hardware Standby Mode ................................................................................................... 804 22.5.1 Transition to Hardware Standby Mode................................................................. 804 22.5.2 Clearing Hardware Standby Mode........................................................................ 804 22.5.3 Hardware Standby Mode Timing.......................................................................... 804 Module Stop Mode ............................................................................................................ 805 Watch Mode....................................................................................................................... 806 22.7.1 Transition to Watch Mode .................................................................................... 806 22.7.2 Clearing Watch Mode........................................................................................... 806 Clock Output Disabled Function .................................................................................... 807 Usage Notes ....................................................................................................................... 808 22.9.1 I/O Port Status....................................................................................................... 808 22.9.2 Current Consumption during Oscillation Settling Wait Period ............................ 808 22.9.3 DTC Module Stop................................................................................................. 808 22.9.4 On-Chip Peripheral Module Interrupt................................................................... 808 22.9.5 Writing to MSTPCR ............................................................................................. 808 22.9.6 Entering Watch Mode and DTC Module Stop...................................................... 809
Section 23 List of Registers................................................................................. 811
23.1 Register Addresses (in address order)................................................................................ 812 23.2 Register Bits....................................................................................................................... 832 23.3 Register States in Each Operating Mode ........................................................................... 853
Section 24 Electrical Characteristics ................................................................... 871
24.1 24.2 24.3 24.4 Power Supply Voltage and Operating Frequency Range................................................... 871 Absolute Maximum Ratings .............................................................................................. 873 DC Characteristics ............................................................................................................. 874 AC Characteristics ............................................................................................................. 882 24.4.1 Power-On/Off Timing........................................................................................... 882 24.4.2 Clock Timing ........................................................................................................ 884 24.4.3 Control Signal Timing .......................................................................................... 886 24.4.4 Bus Timing ........................................................................................................... 889 24.4.5 Timing of On-Chip Peripheral Modules ............................................................... 895 24.5 A/D Conversion Characteristics ........................................................................................ 903 24.6 D/A Conversion Characteristics ........................................................................................ 904 24.7 Flash Memory Characteristics ........................................................................................... 905
Appendix
A. B.
......................................................................................................... 907
I/O Port States in Each Pin State........................................................................................ 907 Product Codes .................................................................................................................... 911
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C.
Package Dimensions .......................................................................................................... 912
Main Revisions for This Edition..........................................................................915 Index .........................................................................................................923
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Figures
Sction 1 Overview Figure 1.1 Internal Block Diagram of H8S/2556 Group .............................................................. 3 Figure 1.2 Internal Block Diagram of H8S/2552 Group .............................................................. 4 Figure 1.3 Internal Block Diagram of H8S/2506 Group .............................................................. 5 Figure 1.4 Pin Arrangement of H8S/2556 Group (FP-144J and FP-144JV) ................................ 6 Figure 1.5 Pin Arrangement of H8S/2552 Group (FP-144J and FP-144JV) ................................ 7 Figure 1.6 Pin Arrangement of H8S/2506 Group (FP-144J and FP-144JV) ................................ 8 Figure 1.7 Pin Arrangement of H8S/2552 Group (BP-176V) ...................................................... 9 Figure 1.8 Pin Arrangement of H8S/2506 Group (BP-176V) .................................................... 10 Section 2 CPU Figure 2.1 Exception Vector Table (Normal Mode)................................................................... 29 Figure 2.2 Stack Structure in Normal Mode............................................................................... 29 Figure 2.3 Exception Vector Table (Advanced Mode)............................................................... 30 Figure 2.4 Stack Structure in Advanced Mode........................................................................... 31 Figure 2.5 Memory Map............................................................................................................. 32 Figure 2.6 CPU Registers ........................................................................................................... 33 Figure 2.7 Usage of General Registers ....................................................................................... 34 Figure 2.8 Stack Status ............................................................................................................... 35 Figure 2.9 General Register Data Formats (1)............................................................................ 38 Figure 2.9 General Register Data Formats (2)............................................................................ 39 Figure 2.10 Memory Data Formats .............................................................................................. 40 Figure 2.11 Instruction Formats (Examples) ................................................................................ 52 Figure 2.12 Branch Address Specification in Memory Indirect Mode......................................... 56 Figure 2.13 State Transitions........................................................................................................ 60 Figure 2.14 Flowchart of Access Method for Registers with Write-Only Bits............................. 64 Section 3 MCU Operating Modes Figure 3.1 Address Map of H8S/2556, H8S/2552, and H8S/2506 ............................................. 72 Figure 3.2 Address Map of H8S/2551 ........................................................................................ 73 Figure 3.3 Address Map of H8S/2505 ........................................................................................ 74 Section 4 Exception Handling Figure 4.1 Reset Sequence (Advanced Mode with On-Chip ROM Enabled)............................. 78 Figure 4.2 Stack State after Exception Handling (Advanced Mode).......................................... 82 Figure 4.3 Operation when SP Value Is Odd.............................................................................. 83
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Section 5 Interrupt Controller Figure 5.1 Block Diagram of Interrupt Controller...................................................................... 86 Figure 5.2 Block Diagram of IRQ7 to IRQ0 Interrupts.............................................................. 94 Figure 5.3 Set Timing for IRQ7F to IRQ0F ............................................................................... 95 Figure 5.4 Block Diagram of Interrupt Control Operation ....................................................... 101 Figure 5.5 Flowchart of Procedure up to Interrupt Acceptance in Interrupt Control Mode 0 . 104 Figure 5.6 Flowchart of Procedure up to Interrupt Acceptance in Interrupt Control Mode 2 . 106 Figure 5.7 Interrupt Exception Handling.................................................................................. 108 Figure 5.8 DTC and Interrupt Controller.................................................................................. 111 Figure 5.9 Contention between Interrupt Generation and Disabling ........................................ 113 Section 6 PC Break Controller (PBC) Figure 6.1 Block Diagram of PC Break Controller .................................................................. 116 Figure 6.2 Operation in Power-Down Mode Transitions ......................................................... 120 Section 7 Bus Controller Figure 7.1 Block Diagram of Bus Controller ........................................................................... 124 Figure 7.2 Overview of Area Divisions.................................................................................... 135 Figure 7.3 CSn Signal Output Timing (n = 0 to 7) ................................................................... 138 Figure 7.4 On-Chip Memory Access Cycle ............................................................................. 139 Figure 7.5 Pin States during On-Chip Memory Access............................................................ 140 Figure 7.6 On-Chip Peripheral Module Access Cycle ............................................................. 140 Figure 7.7 Pin States during On-Chip Peripheral Module Access............................................ 141 Figure 7.8 On-Chip Port H, Port J, and IIC2 Module Access Cycle ........................................ 141 Figure 7.9 Pin States during On-Chip Port H, Port J, and IIC2 Module Access ...................... 142 Figure 7.10 On-Chip IEB Module Access Cycle ....................................................................... 142 Figure 7.11 Pin States during On-Chip IEB Module Access...................................................... 143 Figure 7.12 On-Chip HCAN Module Access Cycle................................................................... 143 Figure 7.13 Pin States during On-Chip HCAN Module Access................................................. 144 Figure 7.14 Access Sizes and Data Alignment Control (8-Bit Access Space) ........................... 145 Figure 7.15 Access Sizes and Data Alignment Control (16-Bit Access Space) ......................... 146 Figure 7.16 Bus Timing for 8-Bit 2-State Access Space ............................................................ 147 Figure 7.17 Bus Timing for 8-Bit 3-State Access Space ............................................................ 148 Figure 7.18 Bus Timing for 16-Bit 2-State Access Space (1) (Even Address Byte Access)...... 149 Figure 7.19 Bus Timing for 16-Bit 2-State Access Space (2) (Odd Address Byte Access) ....... 150 Figure 7.20 Bus Timing for 16-Bit 2-State Access Space (3) (Word Access) ........................... 151 Figure 7.21 Bus Timing for 16-Bit 3-State Access Space (1) (Even Address Byte Access)...... 152 Figure 7.22 Bus Timing for 16-Bit 3-State Access Space (2) (Odd Address Byte Access) ....... 153 Figure 7.23 Bus Timing for 16-Bit 3-State Access Space (3) (Word Access) ........................... 154 Figure 7.24 Example of Wait State Insertion Timing................................................................. 156
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Figure 7.25 Figure 7.26 Figure 7.27 Figure 7.28 Figure 7.29 Figure 7.30
Example of Burst ROM Access Timing (When AST0 = BRSTS1 = 1).................. 158 Example of Burst ROM Access Timing (When AST0 = BRSTS1 = 0).................. 158 Example of Idle Cycle Operation (1) ...................................................................... 160 Example of Idle Cycle Operation (2) ...................................................................... 161 Relationship between Chip Select (CS) and Read (RD) ......................................... 162 Bus Mastership Released State Transition Timing.................................................. 164
Section 8 Data Transfer Controller (DTC) Figure 8.1 Block Diagram of DTC ........................................................................................... 168 Figure 8.2 Block Diagram of DTC Activation Source Control ................................................ 175 Figure 8.3 Location of DTC Register Information in Address Space....................................... 176 Figure 8.4 Correspondence between DTC Vector Address and Register Information ............. 177 Figure 8.5 Flowchart of DTC Operation .................................................................................. 181 Figure 8.6 Memory Mapping in Normal Mode ........................................................................ 182 Figure 8.7 Memory Mapping in Repeat Mode ......................................................................... 183 Figure 8.8 Memory Mapping in Block Transfer Mode ............................................................ 184 Figure 8.9 Chain Transfer Operation........................................................................................ 185 Figure 8.10 DTC Operation Timing (Example in Normal Mode or Repeat Mode) ................... 186 Figure 8.11 DTC Operation Timing (Example in Block Transfer Mode, with Block Size of 2)187 Figure 8.12 DTC Operation Timing (Example of Chain Transfer) ............................................ 187 Section 9 I/O Ports Figure 9.1 Types of Open Drain Outputs ................................................................................. 212 Section 10 16-Bit Timer Pulse Unit (TPU) Figure 10.1 Block Diagram of TPU ........................................................................................... 270 Figure 10.2 Example of Counter Operation Setting Procedure .................................................. 307 Figure 10.3 Free-Running Counter Operation............................................................................ 308 Figure 10.4 Periodic Counter Operation..................................................................................... 309 Figure 10.5 Example of Setting Procedure for Waveform Output by Compare Match.............. 310 Figure 10.6 Example of 0 Output/1 Output Operation ............................................................... 311 Figure 10.7 Example of Toggle Output Operation ..................................................................... 311 Figure 10.8 Example of Input Capture Operation Setting Procedure ......................................... 312 Figure 10.9 Example of Input Capture Operation ...................................................................... 313 Figure 10.10 Example of Synchronous Operation Setting Procedure .......................................... 314 Figure 10.11 Example of Synchronous Operation........................................................................ 315 Figure 10.12 Compare Match Buffer Operation........................................................................... 316 Figure 10.13 Input Capture Buffer Operation .............................................................................. 316 Figure 10.14 Example of Buffer Operation Setting Procedure..................................................... 316 Figure 10.15 Example of Buffer Operation (1) ............................................................................ 317
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Figure 10.16 Example of Buffer Operation (2) ............................................................................ 318 Figure 10.17 Cascaded Operation Setting Procedure ................................................................... 319 Figure 10.18 Example of Cascaded Operation (1) ....................................................................... 319 Figure 10.19 Example of Cascaded Operation (2) ....................................................................... 320 Figure 10.20 Example of PWM Mode Setting Procedure ............................................................ 322 Figure 10.21 Example of PWM Mode Operation (1)................................................................... 323 Figure 10.22 Example of PWM Mode Operation (2)................................................................... 323 Figure 10.23 Example of PWM Mode Operation (3)................................................................... 324 Figure 10.24 Example of Phase Counting Mode Setting Procedure ............................................ 326 Figure 10.25 Example of Phase Counting Mode 1 Operation ...................................................... 327 Figure 10.26 Example of Phase Counting Mode 2 Operation ...................................................... 328 Figure 10.27 Example of Phase Counting Mode 3 Operation ...................................................... 329 Figure 10.28 Example of Phase Counting Mode 4 Operation ...................................................... 330 Figure 10.29 Phase Counting Mode Application Example .......................................................... 332 Figure 10.30 Count Timing in Internal Clock Operation ............................................................. 335 Figure 10.31 Count Timing in External Clock Operation ............................................................ 335 Figure 10.32 Output Compare Output Timing ............................................................................. 336 Figure 10.33 Input Capture Input Signal Timing ......................................................................... 336 Figure 10.34 Counter Clear Timing (Compare Match) ................................................................ 337 Figure 10.35 Counter Clear Timing (Input Capture).................................................................... 337 Figure 10.36 Buffer Operation Timing (Compare Match) ........................................................... 338 Figure 10.37 Buffer Operation Timing (Input Capture) ............................................................... 338 Figure 10.38 TGI Interrupt Timing (Compare Match) ................................................................. 339 Figure 10.39 TGI Interrupt Timing (Input Capture)..................................................................... 340 Figure 10.40 TCIV Interrupt Setting Timing ............................................................................... 340 Figure 10.41 TCIU Interrupt Setting Timing ............................................................................... 341 Figure 10.42 Timing for Status Flag Clearing by CPU ................................................................ 342 Figure 10.43 Timing for Status Flag Clearing by DTC Activation .............................................. 342 Figure 10.44 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode .................. 343 Figure 10.45 Contention between TCNT Write and Clear Operations......................................... 344 Figure 10.46 Contention between TCNT Write and Increment Operations ................................. 345 Figure 10.47 Contention between TGR Write and Compare Match ............................................ 346 Figure 10.48 Contention between Buffer Register Write and Compare Match............................ 347 Figure 10.49 Contention between TGR Read and Input Capture ................................................. 348 Figure 10.50 Contention between TGR Write and Input Capture ................................................ 349 Figure 10.51 Contention between Buffer Register Write and Input Capture ............................... 350 Figure 10.52 Contention between Overflow and Counter Clearing ............................................. 351 Figure 10.53 Contention between TCNT Write and Overflow .................................................... 352
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Section 11 8-Bit Timers (TMR) Figure 11.1 Block Diagram of 8-Bit Timer Module................................................................... 354 Figure 11.2 Example of Pulse Output......................................................................................... 364 Figure 11.3 Count Timing for Internal Clock Input ................................................................... 365 Figure 11.4 Count Timing for External Clock Input .................................................................. 365 Figure 11.5 Timing of CMF Flag Setting ................................................................................... 366 Figure 11.6 Timing of Timer Output.......................................................................................... 366 Figure 11.7 Timing of Compare-Match Clear ............................................................................ 367 Figure 11.8 Timing of Clearing by External Reset Input ........................................................... 367 Figure 11.9 Timing of OVF Setting ........................................................................................... 368 Figure 11.10 Contention between TCNT Write and Clear ........................................................... 371 Figure 11.11 Contention between TCNT Write and Increment.................................................... 372 Figure 11.12 Contention between TCOR Write and Compare-Match ......................................... 373 Section 12 Figure 12.1 Figure 12.1 Figure 12.2 Figure 12.3 Figure 12.4 Figure 12.5 Figure 12.6 Figure 12.7 Figure 12.8 Watchdog Timer (WDT) Block Diagram of WDT_0 (1) ................................................................................ 378 Block Diagram of WDT_1 (2) ................................................................................ 379 Watchdog Timer Mode Operation .......................................................................... 387 Interval Timer Mode Operation .............................................................................. 388 Timing of OVF Setting ........................................................................................... 388 Timing of WOVF Setting........................................................................................ 389 Writing to TCNT and TCSR (WDT_0)................................................................... 390 Writing to RSTCSR ................................................................................................ 391 Contention between TCNT Write and Increment.................................................... 392
Section 13 Serial Communication Interface (SCI) Figure 13.1 Block Diagram of SCI............................................................................................. 396 Figure 13.2 Data Format in Asynchronous Communication (Example with 8-Bit Data, Parity, Two Stop Bits) ........................................................................................................ 425 Figure 13.3 Receive Data Sampling Timing in Asynchronous Mode ........................................ 427 Figure 13.4 Relationship between Output Clock and Transfer Data Phase (Asynchronous Mode)............................................................................................. 428 Figure 13.5 Sample SCI Initialization Flowchart ....................................................................... 429 Figure 13.6 Example of Operation in Transmission in Asynchronous Mode (Example with 8-Bit Data, Parity, One Stop Bit) .................................................... 430 Figure 13.7 Sample Serial Transmission Flowchart ................................................................... 431 Figure 13.8 Example of SCI Operation in Reception (Example with 8-Bit Data, Parity, One Stop Bit) .................................................... 432 Figure 13.9 Sample Serial Reception Data Flowchart (1) .......................................................... 434
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Figure 13.9 Sample Serial Reception Data Flowchart (2) .......................................................... 435 Figure 13.10 Example of Communication Using Multiprocessor Format (Transmission of Data H'AA to Receiving Station A) ............................................ 437 Figure 13.11 Sample Multiprocessor Serial Transmission Flowchart.......................................... 439 Figure 13.12 Example of SCI Operation in Reception (Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit) ............................... 441 Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (1).......................................... 442 Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (2).......................................... 443 Figure 13.14 Data Format in Clocked Synchronous Communication (For LSB-First) ................ 444 Figure 13.15 Sample SCI Initialization Flowchart ....................................................................... 445 Figure 13.16 Sample SCI Transmission Operation in Clocked Synchronous Mode.................... 447 Figure 13.17 Sample Serial Transmission Flowchart................................................................... 448 Figure 13.18 Example of SCI Operation in Reception................................................................. 449 Figure 13.19 Sample Serial Reception Flowchart ........................................................................ 450 Figure 13.20 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations ........ 452 Figure 13.21 (1) Schematic Diagram of Smart Card Interface Pin Connections (Channels 0, 1, 3, and 4) .................................................................................... 453 Figure 13.21 (2) Schematic Diagram of Smart Card Interface Pin Connections (Channel 2) ........................................................................................................ 454 Figure 13.22 Normal Smart Card Interface Data Format ............................................................. 454 Figure 13.23 Direct Convention (SDIR = SINV = O/E = 0) ........................................................ 455 Figure 13.24 Inverse Convention (SDIR = SINV = O/E = 1) ...................................................... 455 Figure 13.25 Receive Data Sampling Timing in Smart Card Interface Mode (Using Clock of 372 Times the Transfer Rate) ....................................................... 457 Figure 13.26 Retransfer Operation in SCI Transmit Mode .......................................................... 459 Figure 13.27 TEND Flag Generation Timing in Transmission Operation ................................... 459 Figure 13.28 Example of Transmission Processing Flow ............................................................ 460 Figure 13.29 Retransfer Operation in SCI Receive Mode............................................................ 462 Figure 13.30 Example of Reception Processing Flow.................................................................. 462 Figure 13.31 Timing for Fixing Clock Output Level ................................................................... 463 Figure 13.32 Clock Halt and Restart Procedure ........................................................................... 464 Figure 13.33 Example of Clocked Synchronous Transmission by DTC...................................... 468 Figure 13.34 Sample Flowchart for Mode Transition during Transmission................................. 469 Figure 13.35 Asynchronous Transmission Using Internal Clock................................................. 469 Figure 13.36 Clocked Synchronous Transmission Using Internal Clock..................................... 470 Figure 13.37 Sample Flowchart for Mode Transition during Reception...................................... 471 Figure 13.38 Operation when Switching from SCK Pin to Port Pin ............................................ 472 Figure 13.39 Operation when Switching from SCK Pin to Port Pin (Example of Preventing Low-Level Output)........................................................... 473
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Section 14 I2C Bus Interface 2 (IIC2) Figure 14.1 Block Diagram of I2C Bus Interface 2..................................................................... 477 Figure 14.2 External Circuit Connections of I/O Pins................................................................ 478 Figure 14.3 I2C Bus Formats ...................................................................................................... 492 Figure 14.4 I2C Bus Timing........................................................................................................ 492 Figure 14.5 Master Transmit Mode Operation Timing (1)......................................................... 494 Figure 14.6 Master Transmit Mode Operation Timing (2)......................................................... 494 Figure 14.7 Master Receive Mode Operation Timing (1) .......................................................... 496 Figure 14.8 Master Receive Mode Operation Timing (2) .......................................................... 497 Figure 14.9 Slave Transmit Mode Operation Timing (1) ........................................................... 498 Figure 14.10 Slave Transmit Mode Operation Timing (2) ........................................................... 499 Figure 14.11 Slave Receive Mode Operation Timing (1)............................................................. 500 Figure 14.12 Slave Receive Mode Operation Timing (2)............................................................. 501 Figure 14.13 Clocked Synchronous Serial Transfer Format......................................................... 501 Figure 14.14 Transmit Mode Operation Timing .......................................................................... 502 Figure 14.15 Receive Mode Operation Timing ............................................................................ 503 Figure 14.16 Block Diagram of Noise Canceler........................................................................... 504 Figure 14.17 Sample Flowchart for Master Transmit Mode ........................................................ 505 Figure 14.18 Sample Flowchart for Master Receive Mode .......................................................... 506 Figure 14.19 Sample Flowchart for Slave Transmit Mode........................................................... 507 Figure 14.20 Sample Flowchart for Slave Receive Mode ............................................................ 508 Figure 14.21 The Timing of the Bit Synchronous Circuit ............................................................ 510 Section 15 A/D Converter Figure 15.1 Block Diagram of A/D Converter ........................................................................... 514 Figure 15.2 Access to ADDR (When Reading H'AA40) ........................................................... 521 Figure 15.3 A/D Conversion Timing (Single-Chip Mode, Channel 1 Selected) ........................ 523 Figure 15.4 A/D Conversion Timing (Scan Mode, Channels AN0 to AN2 Selected)................ 524 Figure 15.5 A/D Conversion Timing.......................................................................................... 525 Figure 15.6 External Trigger Input Timing ................................................................................ 526 Figure 15.7 A/D Conversion Accuracy Definitions ................................................................... 528 Figure 15.8 A/D Conversion Accuracy Definitions ................................................................... 528 Figure 15.9 Example of Analog Input Circuit ............................................................................ 530 Figure 15.10 Example of Analog Input Protection Circuit........................................................... 531 Figure 15.11 Analog Input Pin Equivalent Circuit ....................................................................... 532 Section 16 D/A Converter Figure 16.1 Block Diagram of D/A Converter ........................................................................... 533 Figure 16.2 D/A Converter Operation Example ......................................................................... 537
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Section 17 Figure 17.1 Figure 17.2 Figure 17.3 Figure 17.4 Figure 17.5 Figure 17.6 Figure 17.7
IEBusTM Controller (IEB) [H8S/2552 Group] Block Diagram of IEB ............................................................................................ 540 Transfer Signal Format ........................................................................................... 544 Bit Configuration of Slave Status (SSR)................................................................. 553 Locked Address Configuration ............................................................................... 554 IEBus Bit Format (Conceptual Diagram)................................................................ 555 Transmission Signal Format and Registers in Data Transfer .................................. 567 Relationship between Transmission Signal Format and Registers in IEBus Data Reception ................................................................................................................ 570 Figure 17.8 Master Transmit Operation Timing......................................................................... 591 Figure 17.9 Slave Reception Operation Timing ......................................................................... 594 Figure 17.10 Error Occurrence in the Broadcast Reception (DEE = 1) ....................................... 595 Figure 17.11 Master Receive Operation Timing .......................................................................... 598 Figure 17.12 Slave Transmit Operation Timing........................................................................... 601 Figure 17.13 Relationships among Transfer Interrupt Sources .................................................... 602 Figure 17.14 Relationships among Receive Interrupt Sources..................................................... 602 Figure 17.15 Error Processing in Transfer ................................................................................... 607 Section 18 Controller Area Network (HCAN) [H8S/2556 Group] Figure 18.1 HCAN Block Diagram............................................................................................ 610 Figure 18.2 Message Control Register Configuration ................................................................ 634 Figure 18.3 Standard Format ...................................................................................................... 634 Figure 18.4 Extended Format ..................................................................................................... 634 Figure 18.5 Message Data Configuration................................................................................... 636 Figure 18.6 Hardware Reset Flowchart ...................................................................................... 638 Figure 18.7 Software Reset Flowchart ....................................................................................... 639 Figure 18.8 Detailed Description of One Bit.............................................................................. 640 Figure 18.9 Transmission Flowchart .......................................................................................... 644 Figure 18.10 Transmit Message Cancellation Flowchart ............................................................. 646 Figure 18.11 Reception Flowchart ............................................................................................... 648 Figure 18.12 Unread Message Overwrite Flowchart.................................................................... 651 Figure 18.13 HCAN Sleep Mode Flowchart ................................................................................ 652 Figure 18.14 HCAN Halt Mode Flowchart .................................................................................. 653 Figure 18.15 DTC Transfer Flowchart ......................................................................................... 655 Figure 18.16 High-Speed Interface Using PCA82C250............................................................... 656 Figure 18.17 HCAN Transmit Procedure..................................................................................... 660 Section 20 Flash Memory Figure 20.1 Block Diagram of Flash Memory............................................................................ 667 Figure 20.2 Mode Transition of Flash Memory ......................................................................... 668
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Figure 20.3 Flash Memory Configuration .................................................................................. 671 Figure 20.4 Block Division of User MAT.................................................................................. 672 Figure 20.5 Overview of User Procedure Program .................................................................... 673 Figure 20.6 System Configuration in Boot Mode....................................................................... 699 Figure 20.7 Automatic-Bit-Rate Adjustment Operation of SCI ................................................. 700 Figure 20.8 Overview of Boot Mode State Transition Diagram................................................. 702 Figure 20.9 Programming/Erasing Overview Flow.................................................................... 703 Figure 20.10 RAM Map when Programming/Erasing Is Executed .............................................. 704 Figure 20.11 Programming Procedure.......................................................................................... 705 Figure 20.12 Erasing Procedure ................................................................................................... 711 Figure 20.13 Sample Procedure of Repeating RAM Emulation, Erasing, and Programming (Overview) .............................................................................................................. 713 Figure 20.14 Procedure for Programming User MAT in User Boot Mode .................................. 715 Figure 20.15 Procedure for Erasing User MAT in User Boot Mode ............................................ 717 Figure 20.16 Transitions to Error-Protection State....................................................................... 728 Figure 20.17 Emulation of Flash Memory in RAM ..................................................................... 729 Figure 20.18 Example of a RAM-Overlap Operation .................................................................. 730 Figure 20.19 Programming of the Data after Tuning ................................................................... 731 Figure 20.20 Switching between the User MAT and User Boot MAT ........................................ 732 Figure 20.21 On-Chip Flash Memory Map .................................................................................. 734 Figure 20.22 Pin arrangement of Socket Adapter......................................................................... 735 Figure 20.23 Boot Program States................................................................................................ 742 Figure 20.24 Bit-Rate-Adjustment Sequence ............................................................................... 743 Figure 20.25 Communication Protocol Format ............................................................................ 744 Figure 20.26 New Bit-Rate Selection Sequence........................................................................... 754 Figure 20.27 Programming Sequence........................................................................................... 758 Figure 20.28 Erasure Sequence .................................................................................................... 761 Figure 20.29 Memory Read Timing after Command Programming ............................................ 767 Figure 20.30 Waveform of Transition from Memory-Read Mode to Other Mode....................... 768 Figure 20.31 Waveform of CE, OE Enable State Read................................................................ 769 Figure 20.32 Waveform of CE, OE Clock System Read.............................................................. 769 Figure 20.33 Waveform of Automatic Programming Mode......................................................... 770 Figure 20.34 Waveform in Auto-Erase Mode .............................................................................. 771 Figure 20.35 Waveform in Status-Read Mode ............................................................................. 772 Figure 20.36 Oscillation Stabilized Time, Programmer Mode Setup Time and Power Falling Sequence ................................................................................................................. 773 Section 21 Clock Pulse Generator Figure 21.1 Block Diagram of Clock Pulse Generator ............................................................... 775 Figure 21.2 Connection of Crystal Resonator (Example)........................................................... 780
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Figure 21.3 Crystal Resonator Equivalent Circuit...................................................................... 780 Figure 21.4 External Clock Input (Examples) ............................................................................ 781 Figure 21.5 External Clock Input Timing................................................................................... 782 Figure 21.6 External Clock Switching Circuit (Examples) ........................................................ 783 Figure 21.7 External Clock Switching Timing (Examples)........................................................ 784 Figure 21.8 Connection Example of 32.768-kHz Crystal Resonator ......................................... 786 Figure 21.9 Equivalent Circuit for 32.768-kHz Crystal Resonator ............................................ 786 Figure 21.10 Pin Handling when Subclock Is Not Used .............................................................. 787 Figure 21.11 Note on Board Design of Oscillator Circuit............................................................ 788 Figure 21.12 Recommended Connection Circuit between Power Supply Pins and Vss Pin ........ 789 Section 22 Figure 22.1 Figure 22.2 Figure 22.3 Figure 22.4 Power-Down Modes Mode Transition Diagram ....................................................................................... 794 Medium-Speed Mode Transition and Clearance Timing ........................................ 800 Software Standby Mode Application Example ....................................................... 803 Hardware Standby Mode Timing............................................................................ 805
Section 24 Electrical Characteristics Figure 24.1 (1) Power Supply Voltage and Operating Ranges (H8S/2552 Group, H8S/2506 Group) ................................................................. 871 Figure 24.1 (2) Power Supply Voltage and Operating Ranges (H8S/2556 Group) ..................... 872 Figure 24.2 Output Load Circuit ................................................................................................ 882 Figure 24.3 Power-On/Off Timing............................................................................................. 883 Figure 24.4 Power-On Timing.................................................................................................... 883 Figure 24.5 System Clock Timing.............................................................................................. 885 Figure 24.6 Oscillator Settling Timing....................................................................................... 886 Figure 24.7 Reset Input Timing.................................................................................................. 887 Figure 24.8 Interrupt Input Timing............................................................................................. 888 Figure 24.9 Basic Bus Timing: Two-State Access ..................................................................... 891 Figure 24.10 Basic Bus Timing: Three-State Access ................................................................... 892 Figure 24.11 Basic Bus Timing: Three-State Access, One Wait.................................................. 893 Figure 24.12 Burst ROM Access Timing: Two-State Access ...................................................... 894 Figure 24.13 External Bus-Released Timing................................................................................ 894 Figure 24.14 I/O Port Input/Output Timing ................................................................................. 897 Figure 24.15 TPU Input/Output Timing....................................................................................... 898 Figure 24.16 TPU Clock Input Timing ........................................................................................ 898 Figure 24.17 8-Bit Timer Output Timing ..................................................................................... 898 Figure 24.18 8-Bit Timer Clock Input Timing ............................................................................. 898 Figure 24.19 8-Bit Timer Reset Input Timing.............................................................................. 899 Figure 24.20 WDT_1 Output Timing........................................................................................... 899
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Figure 24.21 SCK Clock Input Timing ........................................................................................ 899 Figure 24.22 SCI Input/Output Timing/Synchronous Mode ........................................................ 899 Figure 24.23 External Trigger Input Timing for A/D Converter.................................................. 900 Figure 24.24 HCAN Input/Output Timing ................................................................................... 900 Figure 24.25 I2C Bus Interface 2 Input/Output Timing ................................................................ 902 Appendix Figure C.1 Figure C.2
FP-144J and FP-144JV Package Dimensions ......................................................... 912 BP-176V Package Dimensions ............................................................................... 913
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Tables
Section 1 Overview Table 1.1 Pin Arrangements in Operating Mode....................................................................... 11 Table 1.2 Pin Functions............................................................................................................. 17 Section 2 CPU Table 2.1 Instruction Classification........................................................................................... 41 Table 2.2 Operation Notation.................................................................................................... 42 Table 2.3 Data Transfer Instructions ......................................................................................... 43 Table 2.4 Arithmetic Operations Instructions (1)...................................................................... 44 Table 2.4 Arithmetic Operations Instructions (2)...................................................................... 45 Table 2.5 Logic Operations Instructions ................................................................................... 46 Table 2.6 Shift Instructions ....................................................................................................... 46 Table 2.7 Bit Manipulation Instructions (1) .............................................................................. 47 Table 2.7 Bit Manipulation Instructions (2) .............................................................................. 48 Table 2.8 Branch Instructions ................................................................................................... 49 Table 2.9 System Control Instructions ...................................................................................... 50 Table 2.10 Block Data Transfer Instructions .............................................................................. 51 Table 2.11 Addressing Modes..................................................................................................... 53 Table 2.12 Absolute Address Access Ranges ............................................................................. 54 Table 2.13 Effective Address Calculation (1) ............................................................................. 57 Table 2.13 Effective Address Calculation (2) ............................................................................. 58 Section 3 MCU Operating Modes Table 3.1 MCU Operating Mode Selection............................................................................... 67 Table 3.2 Pin Function in Each Operating Mode ...................................................................... 71 Section 4 Exception Handling Table 4.1 Exception Types and Priority .................................................................................... 75 Table 4.2 Exception Handling Vector Table ............................................................................. 76 Table 4.3 Types of Reset........................................................................................................... 77 Table 4.4 State of CCR and EXR after Trace Exception Handling........................................... 80 Table 4.5 State of CCR and EXR after Trap Instruction Exception Handling .......................... 81 Section 5 Interrupt Controller Table 5.1 Pin Configuration ...................................................................................................... 87 Table 5.2 Interrupt Sources, Vector Addresses, and Interrupt Priorities ................................... 96
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Table 5.3 Table 5.4 Table 5.5 Table 5.6 Table 5.7 Table 5.8 Table 5.9
Interrupt Control Modes.......................................................................................... 100 Interrupts Selected in Each Interrupt Control Mode (1).......................................... 102 Interrupts Selected in Each Interrupt Control Mode (2).......................................... 102 Operations and Control Signal Functions in Each Interrupt Control Mode ............ 103 Interrupt Response Times (States) .......................................................................... 109 Number of States in Interrupt Handling Routine Execution Status......................... 110 Interrupt Source Selection and Clear Control ......................................................... 112
Section 7 Bus Controller Table 7.1 Pin Configuration .................................................................................................... 125 Table 7.2 Bus Specifications for Each Area (Basic Bus Interface)......................................... 136 Table 7.3 Data Buses Used and Valid Strobes ........................................................................ 146 Table 7.4 Pin States in Idle Cycle ........................................................................................... 162 Table 7.5 Pin States in Bus Mastership Released State........................................................... 163 Section 8 Data Transfer Controller (DTC) Table 8.1 Activation Source and DTCER Clearing ................................................................ 175 Table 8.2 Interrupt Sources, DTC Vector Addresses, and Corresponding DTCEs................. 178 Table 8.3 Register Function in Normal Mode......................................................................... 182 Table 8.4 Register Function in Repeat Mode.......................................................................... 183 Table 8.5 Register Function in Block Transfer Mode............................................................. 184 Table 8.6 DTC Execution Status............................................................................................. 188 Table 8.7 Number of States Required for Each Execution Status........................................... 188 Section 9 I/O Ports Table 9.1 Port Functions ......................................................................................................... 194 Table 9.2 Input Pull-Up MOS States (Port A) ........................................................................ 232 Table 9.3 Input Pull-Up MOS States (Port B)......................................................................... 238 Table 9.4 Input Pull-Up MOS States (Port C)......................................................................... 242 Table 9.5 Input Pull-Up MOS States (Port D) ........................................................................ 246 Table 9.6 Input Pull-Up MOS States (Port E)......................................................................... 250 Table 9.7 Examples of Ways to Handle Unused Input Pins.................................................... 265 Section 10 16-Bit Timer Pulse Unit (TPU) Table 10.1 TPU Functions ........................................................................................................ 268 Table 10.2 TPU Pins ................................................................................................................. 271 Table 10.3 CCLR0 to CCLR2 (channels 0 and 3)..................................................................... 277 Table 10.4 CCLR0 to CCLR2 (channels 1, 2, 4, and 5)............................................................ 277 Table 10.5 TPSC0 to TPSC2 (channel 0).................................................................................. 278 Table 10.6 TPSC0 to TPSC2 (channel 1).................................................................................. 278
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Table 10.7 Table 10.8 Table 10.9 Table 10.10 Table 10.11 Table 10.12 Table 10.13 Table 10.14 Table 10.15 Table 10.16 Table 10.17 Table 10.18 Table 10.19 Table 10.20 Table 10.21 Table 10.22 Table 10.23 Table 10.24 Table 10.25 Table 10.26 Table 10.27 Table 10.28 Table 10.29 Table 10.30 Table 10.31 Table 10.32 Table 10.33 Table 10.34 Table 10.35 Table 10.36
TPSC0 to TPSC2 (channels 2) ................................................................................ 279 TPSC0 to TPSC2 (channel 3).................................................................................. 279 TPSC0 to TPSC2 (channel 4).................................................................................. 280 TPSC0 to TPSC2 (channel 5).................................................................................. 280 MD0 to MD3........................................................................................................... 282 TIORH_0 ................................................................................................................ 284 TIORL_0 ................................................................................................................. 285 TIOR_1 ................................................................................................................... 286 TIOR_2 ................................................................................................................... 287 TIORH_3 ................................................................................................................ 288 TIORL_3 ................................................................................................................. 289 TIOR_4 ................................................................................................................... 290 TIOR_5 ................................................................................................................... 291 TIORH_0 ................................................................................................................ 292 TIORL_0 ................................................................................................................. 293 TIOR_1 ................................................................................................................... 294 TIOR_2 ................................................................................................................... 295 TIORH_3 ................................................................................................................ 296 TIORL_3 ................................................................................................................. 297 TIOR_4 ................................................................................................................... 298 TIOR_5 ................................................................................................................... 299 Register Combinations in Buffer Operation............................................................ 315 Cascaded Combinations .......................................................................................... 318 PWM Output Registers and Output Pins................................................................. 321 Phase Counting Mode Clock Input Pins.................................................................. 325 Up/Down-Count Conditions in Phase Counting Mode 1 ........................................ 327 Up/Down-Count Conditions in Phase Counting Mode 2 ........................................ 328 Up/Down-Count Conditions in Phase Counting Mode 3 ........................................ 329 Up/Down-Count Conditions in Phase Counting Mode 4 ........................................ 330 TPU Interrupts......................................................................................................... 333
Section 11 8-Bit Timers (TMR) Table 11.1 Pin Configuration .................................................................................................... 355 Table 11.2 8-Bit Timer Interrupt Sources ................................................................................. 370 Table 11.3 Timer Output Priorities ........................................................................................... 373 Table 11.4 Switching of Internal Clock and TCNT Operation ................................................. 374 Section 12 Watchdog Timer (WDT) Table 12.1 Pin Configuration .................................................................................................... 379 Table 12.2 WDT Interrupt Source............................................................................................. 389
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Section 13 Serial Communication Interface (SCI) Table 13.1 Pin Configuration .................................................................................................... 397 Table 13.2 Relationships between N Setting in BRR and Bit Rate B ....................................... 418 Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode) ................................... 419 Table 13.4 Maximum Bit Rate for Each Frequency (Asynchronous Mode)............................. 420 Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode)................... 421 Table 13.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode) ....................... 422 Table 13.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)....... 423 Table 13.8 Examples of Bit Rate for Various BRR Settings (Smart Card Interface Mode) (When n = 0 and S = 372) ....................................................................................... 423 Table 13.9 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode) (when S = 372)........................................................................................................ 424 Table 13.10 Serial Transfer Formats (Asynchronous Mode) ...................................................... 426 Table 13.11 SSR Status Flags and Receive Data Handling ........................................................ 433 Table 13.12 Interrupt Sources of Serial Communication Interface Mode................................... 465 Table 13.13 Interrupt Sources in Smart Card Interface Mode .................................................... 466 Section 14 I2C Bus Interface 2 (IIC2) Table 14.1 I2C Bus Interface Pins ............................................................................................. 478 Table 14.2 Transfer Rate........................................................................................................... 481 Table 14.3 Interrupt Requests ................................................................................................... 509 Table 14.4 Time for Monitoring SCL ....................................................................................... 510 Section 15 A/D Converter Table 15.1 Pin Configuration .................................................................................................... 515 Table 15.2 Analog Input Channels and Corresponding ADDR Registers ................................ 516 Table 15.3 A/D Conversion Time (Single Mode) ..................................................................... 525 Table 15.4 A/D Conversion Time (Scan Mode) ....................................................................... 526 Table 15.5 A/D Converter Interrupt Source .............................................................................. 527 Table 15.6 Analog Pin Specifications ....................................................................................... 531 Section 16 D/A Converter Table 16.1 Pin Configuration .................................................................................................... 534 Table 16.2 D/A Conversion Control ......................................................................................... 536 Section 17 IEBusTM Controller (IEB) [H8S/2552 Group] Table 17.1 Mode Types............................................................................................................. 541 Table 17.2 Transfer speed and Maximum Number of Transfer Bytes in Each Communications Mode ....................................................................................................................... 542 Table 17.3 Contents of Message Length bits ............................................................................ 547
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Table 17.4 Table 17.5 Table 17.6 Table 17.7
Control Bit Contents................................................................................................ 551 Control Field for Locked Slave Unit ....................................................................... 552 Pin Configuration .................................................................................................... 556 List of System Clock Division Ratio....................................................................... 559
Section 18 Controller Area Network (HCAN) [H8S/2556 Group] Table 18.1 Pin Configuration .................................................................................................... 611 Table 18.2 Limits for Settable Value ........................................................................................ 640 Table 18.3 Setting Range for TSEG1 and TSEG2 in BCR ....................................................... 642 Table 18.4 HCAN Interrupt Sources......................................................................................... 654 Table 18.5 Interval Limitation between TXPR and TXPR or between TXPR and TXCR ....... 660 Section 20 Flash Memory Table 20.1 MD Pin Setting and Operating Mode...................................................................... 669 Table 20.2 Comparison of Programming Modes ...................................................................... 670 Table 20.3 Pin Configuration .................................................................................................... 675 Table 20.4 Register/Parameter and Target Mode...................................................................... 677 Table 20.5 Parameters and Target Modes ................................................................................. 685 Table 20.6 Division of User MAT Area.................................................................................... 697 Table 20.7 System Clock Frequency for Automatic-Bit-Rate Adjustment by This LSI ........... 700 Table 20.8 Executable MAT ..................................................................................................... 719 Table 20.9 (1) Useable Area for Programming in User Program Mode................................... 719 Table 20.9 (2) Useable Area for Erasure in User Program Mode............................................. 721 Table 20.9 (3) Useable Area for Programming in User Boot Mode......................................... 722 Table 20.9 (4) Useable Area for Erasure in User Boot Mode .................................................. 724 Table 20.10 Hardware Protection................................................................................................ 726 Table 20.11 Software Protection ................................................................................................. 727 Table 20.12 Setting Procedure of each Operation Mode of Programmer Mode ......................... 736 Table 20.13 Each Command in Programmer Mode .................................................................... 737 Table 20.14 Return Codes in Status-Read Mode ........................................................................ 739 Table 20.15 True Value Table of Status Polling Output ............................................................. 739 Table 20.16 Inquiry and Selection Commands ........................................................................... 745 Table 20.17 Programming/Erasing Command ............................................................................ 756 Table 20.18 Status Code.............................................................................................................. 766 Table 20.19 Error Code............................................................................................................... 766 Table 20.20 AC Characteristics in Memory Read Mode ............................................................ 767 Table 20.21 AC Characteristics in Transition from Memory-Read Mode to Other Mode.......... 768 Table 20.22 AC Characteristics in Memory-Read Mode ............................................................ 769 Table 20.23 AC Characteristics in Auto-Program Mode ............................................................ 770 Table 20.24 AC Characteristic in Auto-Erase Mode................................................................... 771
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Table 20.25 AC Characteristics in Status-Read Mode................................................................ 772 Table 20.26 Transition Time Rules before Command Wait State .............................................. 773 Section 21 Clock Pulse Generator Table 21.1 Damping Resistance Value ..................................................................................... 780 Table 21.2 Crystal Resonator Characteristics ........................................................................... 781 Table 21.3 External Clock Input Conditions............................................................................. 782 Section 22 Power-Down Modes Table 22.1 LSI Internal States in Each Mode ........................................................................... 791 Table 22.2 Power-Down Mode Transition Conditions ............................................................. 795 Table 22.3 Oscillation Settling Time Settings........................................................................... 802 Table 22.4 Pin State in Each Processing State ....................................................................... 807 Section 24 Table 24.1 Table 24.2 Table 24.2 Table 24.2 Table 24.3 Table 24.4 Table 24.5 Table 24.6 Table 24.6 Table 24.7 Table 24.8 Table 24.9 Table 24.10 Table 24.11 Table 24.12 Table 24.13 Electrical Characteristics Absolute Maximum Ratings.................................................................................... 873 DC Characteristics (1)............................................................................................. 874 DC Characteristics (2)............................................................................................. 876 DC Characteristics (3)............................................................................................. 878 Permissible Output Currents ................................................................................... 880 Bus Drive Characteristics........................................................................................ 881 Power-On/Off Timing............................................................................................. 882 Clock Timing (1)..................................................................................................... 884 Clock Timing (2)..................................................................................................... 885 Control Signal Timing............................................................................................. 886 Bus Timing.............................................................................................................. 889 Timing of On-Chip Peripheral Modules ................................................................. 895 I2C Bus Interface 2 Timing...................................................................................... 901 A/D Conversion Characteristics.............................................................................. 903 D/A Conversion Characteristics.............................................................................. 904 Flash Memory Characteristics................................................................................. 905
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Section 1 Overview
Section 1 Overview
1.1 Features
* High-speed H8S/2000 central processing unit with an internal 16-bit architecture Upward-compatible with H8/300 and H8/300H CPUs on an object level Sixteen 16-bit general registers 65 basic instructions * Various peripheral functions PC break controller Data transfer controller (DTC) 16-bit timer-pulse unit (TPU) 8-bit timer (TMR) Watchdog timer (WDT) Serial communication interface (SCI) I2C bus interface 2 (IIC2) 10-bit A/D converter 8-bit D/A converter IEBusTM controller (IEB) (H8S/2552, H8S/2551) Controller area network (HCAN) (H8S/2556) * On-chip memory
ROM Flash memory version Part No. HD64F2556 HD64F2552 HD64F2551 HD64F2506 HD64F2505 ROM 512 kbytes 512 kbytes 384 kbytes 512 kbytes 384 kbytes RAM 32 kbytes 32 kbytes 24 kbytes 32 kbytes 32 kbytes Remarks
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Section 1 Overview
* General I/O ports Support two types of the port with different power supply sources H8S/2556 Group I/O pins: 102 HCAN pins: 2 (one input and one output) Input pins: 16 H8S/2552 Group and H8S/2506 Group I/O pins: 104 Input port: 16 * Supports various power-down modes * Compact package
Package QFP-144 LFBGA-176*
1
Code*
2
Body Size 20.0 x 20.0 mm 13.0 x 13.0 mm
Pin Pitch 0.5 mm 0.8 mm
FP-144J/FP-144JV BP-176V
Notes: 1. Available only in the H8S/2552 Group and H8S/2506 Group. 2. Package code ending in the letter V designate Pb-free Product.
1.2
Internal Block Diagram
Figures 1.1 to 1.3 show the internal block diagrams.
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Section 1 Overview
H8S/2000 CPU Sub clock pulse generator
Internal data bus Internal address bus
Interrupt controller
PG4/CS0 PG1/CS3/IRQ7 PG0/IRQ6
Port G
DTC PC break controller (2 channels) WDT0 WDT1 (sub clock operation)
Peripheral data bus Peripheral address bus
Bus controller
PF7/ PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2
Port F
System clock pulse generator
Port A
MD2 MD1 MD0 EXTAL XTAL OSC1 OSC2 STBY RES NMI
TEST P1VCC P1VCC P2VCC VSS VSS VSS VCL VCC VSS VSS
PD7/D15 PD6/D14 PD5/D13 PD4/D12 PD3/D11 PD2/D10 PD1/D9 PD0/D8
Port D
PE7/D7 PE6/D6 PE5/D5 PE4/D4 PE3/D3 PE2/D2 PE1/D1 PE0/D0
Port E
PLL for system clock
PA7/A23 PA6/A22 PA5/A21 PA4/A20 PA3/A19 PA2/A18 PA1/A17 PA0/A16 PB7/A15 PB6/A14 PB5/A13 PB4/A12 PB3 / A11 PB2/A10 PB1/A9 PB0/A8 PC7/A7 PC6/A6 PC5/A5 PC4/A4 PC3/A3 PC2/A2 PC1/A1 PC0/A0 P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8
P10 / TIOCA0 P11 / TIOCB0 P12 / TIOCC0 / TCLKA P13 / TIOCD0 / TCLKB P14 / TIOCA1/IRQ0 P15 / TIOCB1 / TCLKC P16 / TIOCA2/IRQ1 P17 / TIOCB2/ TCLKD P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 P52/SCK2 P51/RxD2 P50/TxD2
ROM
8-bit timer (4 channels)
Port 1
SCI (5 channels) RAM
I C bus interface 2 D/A converter (2 channels)
2
TPU (6 channels) A/D converter (16 channels)
Port 2
HCAN (1 channel)
Port 5
Port H
Port J
Port 7
Port 9
Port 3
Port C
Port B
Port 4
P70/TMRI01/TMCI01/CS4 P71/TMRI23/TMCI23/CS5 P72/TMO0/CS6 P73/TMO1/CS7 P74/TMO2/MRES P75/T MO 3/SCK3 P76/RxD3 P77/TxD3
Figure 1.1 Internal Block Diagram of H8S/2556 Group
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P47/AN7 P46/AN6 P45/AN5 P44/AN4 P43/AN3 P42/AN2 P41/AN1 P40/AN0
PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0 HRxD HTxD Vref AVCC AVSS
PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
Section 1 Overview
H8S/2000 CPU Sub clock pulse generator
Internal data bus Internal address bus
WDT0
P10/TIOCA0 P11/TIOCB0 P12/TIOCC0/TCLKA P13/TIOCD0/TCLKB P14/TIOCA1/IRQ0 P15/TIOCB1/TCLKC P16/TIOCA2/IRQ1 P17/TIOCB2/TCLKD P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 P52/SCK2 P51/RxD2 P50/TxD2
WDT1 (sub clock operation)
ROM
Port 1
8-bit timer (4 channels)
Port C
PC break controller (2 channels)
Peripheral data bus Peripheral address bus
PG4/CS0 PG3/Rx/CS1 PG2/Tx/CS2 PG1/CS3/IRQ7 PG0/IRQ6
Interrupt controller
Port G
DTC
Bus controller
PF7/ PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2
Port F
System clock pulse generator
Port A
MD2 MD1 MD0 EXTAL XTAL OSC1 OSC2 STBY RES NMI
TEST P1VCC P1VCC P2VCC VSS VSS VSS VCL VCC VSS VSS
PD7 / D15 PD6 / D14 PD5 / D13 PD4 / D12 PD3 / D11 PD2 / D10 PD1 / D9 PD0 / D8
Port D PLL for system clock
PE7 / D7 PE6 / D6 PE5 / D5 PE4 / D4 PE3 / D3 PE2 / D2 PE1 / D1 PE0 / D0
Port E
PA7/A23 PA6/A22 PA5/A21 PA4/A20 PA3/A19 PA2/A18 PA1/A17 PA0/A16 PB7/A15 PB6/A14 PB5/A13 PB4/A12 PB3 / A11 PB2/A10 PB1/A9 PB0/A8 PC7/A7 PC6/A6 PC5/A5 PC4/A4 PC3/A3 PC2/A2 PC1/A1 PC0/A0 P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8
SCI (5 channels) RAM
Port 3
I C bus interface 2 D/A converter (2 channels)
2
TPU (6 channels)
A/D converter (16 channels)
Port 2
IEB (1 channel)
Port 5
Port H
Port J
Port 7
Port 9
P70 / T M R I 0 1 / T M C I 0 1 /CS4 P71 / T M R I 2 3 / T M C I 2 3 /CS5 P72 / TMO0/CS6 P73 / TMO1/CS7 P74 / T M O 2 / MRES P75 / T M O 3 / SCK3 P76 /RxD3 P77 / TxD3 Vref AVCC AVSS
Port B
Port 4
Figure 1.2 Internal Block Diagram of H8S/2552 Group
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P47 / AN7 P46 / AN6 P45 / AN5 P44 / AN4 P43 / AN3 P42 / AN2 P41 / AN1 P40 / AN0
PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0
Section 1 Overview
H8S/2000 CPU
WDT
P10/TIOCA0 P11/TIOCB0 P12/TIOCC0/TCLKA P13/TIOCD0/TCLKB P14/TIOCA1/IRQ0 P15/TIOCB1/TCLKC P16/TIOCA2/IRQ1 P17/TIOCB2/TCLKD P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 P52/SCK2 P51/RxD2 P50/TxD2
WDT1 (sub clock operation)
ROM
Port 1
8-bit timer (4 channels)
Port C
PC break controller (2 channels)
Peripheral data bus Peripheral address bus
PG4/CS0 PG3/CS1 PG2/CS2 PG1/CS3/IRQ7 PG0/IRQ6
Interrupt controller
Port G
DTC
Bus controller
Port B
Sub clock pulse generator
Internal data bus Internal address bus
PF7/ PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2
Port F
System clock pulse generator
Port A
MD2 MD1 MD0 EXTAL XTAL OSC1 OSC2 STBY RES NMI
TEST P1VCC P1VCC P2VCC VSS VSS VSS VCL VCC VSS VSS
PD7 / D15 PD6 / D14 PD5 / D13 PD4 / D12 PD3 / D11 PD2 / D10 PD1 / D9 PD0 / D8
PE7 / D7 PE6 / D6 PE5 / D5 PE4 / D4 PE3 / D3 PE2 / D2 PE1 / D1 PE0 / D0
Port D PLL for system clock
Port E
PA7/A23 PA6/A22 PA5/A21 PA4/A20 PA3/A19 PA2/A18 PA1/A17 PA0/A16 PB7/A15 PB6/A14 PB5/A13 PB4/A12 PB3 / A11 PB2/A10 PB1/A9 PB0/A8 PC7/A7 PC6/A6 PC5/A5 PC4/A4 PC3/A3 PC2/A2 PC1/A1 PC0/A0 P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8
SCI (5 channels) RAM
Port 3
I C bus interface 2 D/A converter (2 channels)
2
TPU (6 channels)
A/D converter (16 channels)
Port 2
Port 5
Port H
Port J
Port 7
Port 9
P70 / T M R I 0 1 / T M C I 0 1 /CS4 P71 / T M R I 2 3 / T M C I 2 3 /CS5 P72 / TMO0/CS6 P73 / TMO1/CS7 P74 / T M O 2 / MRES P75 / T M O 3 / SCK3 P76 /RxD3 P77 / TxD3 PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0 PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0
Port 4
Figure 1.3 Internal Block Diagram of H8S/2506 Group
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P47 / AN7 P46 / AN6 P45 / AN5 P44 / AN4 P43 / AN3 P42 / AN2 P41 / AN1 P40 / AN0
Vref AVCC AVSS
Section 1 Overview
1.3
1.3.1
Pin Arrangements
Pin Arrangements
Figures 1.4 to 1.8 show the pin arrangement.
P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 RES STBY MD1 MD0 Vcc EXTAL Vss XTAL MD2 NMI OSC1 OSC2 VCL* TEST Vss PF7/ P1Vcc PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2 P52/SCK2 P51/RxD2 P50/TxD2 AVcc
108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
Notes: * An external capacitor must be connected to the VCL pin. (Do not connect to the system power.) 1. Powers within specified voltages must be supplied to all power supply pins. If not, this LSI may not operate correctly. 2. Capacitors for stabilization should be inserted near the pin between the power supply pins (P1Vcc (14, 84), P2Vcc (118), Vcc (96)) and Vss pin. For an example of connection, see section 21.9.2, Note on Board Design.
PE5/D5 PE6/D6 PE7/D7 PD0/D8 PD1/D9 PD2/D10 PD3/D11 PD4/D12 PD5/D13 PD6/D14 PD7/D15 Vss PC0/A0 P1Vcc PC1/A1 PC2/A2 PC3/A3 PC4/A4 PC5/A5 PC6/A6 PC7/A7 PB0/A8 PB1/A9 PB2/A10 PB3/A11 PB4/A12 PB5/A13 PB6/A14 PB7/A15 PA0/A16 PA1/A17 PA2/A18 PA3/A19 PA4/A20 PA5/A21 PA6/A22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
P17/TIOCB2/TCLKD P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0 Vss P2Vcc P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P77/TxD3 P76/RxD3 P75/TMO3/SCK3 P74/TMO2/MRES P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/TMCI23/CS5 P70/TMRI01/TMCI01/CS4 PG4/CS0 HRxD HTxD PG1/CS3/IRQ7 PG0/IRQ6 PE0/D0 PE1/D1 PE2/D2 PE3/D3 PE4/D4
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
FP-144J/FP-144JV (top view)
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37
Vref P40/AN0 P41/AN1 P42/AN2 P43/AN3 AVss P44/AN4 P45/AN5 P46/AN6 P47/AN7 P90/AN8 P91/AN9 P92/AN10 P93/AN11 P94/AN12 P95/AN13 P96/AN14/DA0 P97/AN15/DA1 Vss PJ0 PJ1 PJ2 PJ3 PJ4 PJ5 PJ6 PJ7 PH0 PH1 PH2 PH3 PH4 PH5 PH6 PH7 PA7/A23
88 0.47 F
Figure 1.4 Pin Arrangement of H8S/2556 Group (FP-144J and FP-144JV)
Rev. 6.00 Sep. 24, 2009 Page 6 of 928 REJ09B0099-0600
Section 1 Overview
108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 RES STBY MD1 MD0 Vcc EXTAL Vss XTAL MD2 NMI OSC1 OSC2 VCL* TEST Vss PF7/ P1Vcc PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2 P52/SCK2 P51/RxD2 P50/TxD2 AVcc
Notes: * An external capacitor must be connected to the VCL pin. (Do not connect to the system power.) 1. Powers within specified voltages must be supplied to all power supply pins. If not, this LSI may not operate correctly. 2. Capacitors for stabilization should be inserted near the pin between the power supply pins (P1Vcc (14, 84), P2Vcc (118), Vcc (96)) and Vss pin. For an example of connection, see section 21.9.2, Note on Board Design.
PE5/D5 PE6/D6 PE7/D7 PD0/D8 PD1/D9 PD2/D10 PD3/D11 PD4/D12 PD5/D13 PD6/D14 PD7/D15 Vss PC0/A0 P1Vcc PC1/A1 PC2/A2 PC3/A3 PC4/A4 PC5/A5 PC6/A6 PC7/A7 PB0/A8 PB1/A9 PB2/A10 PB3/A11 PB4/A12 PB5/A13 PB6/A14 PB7/A15 PA0/A16 PA1/A17 PA2/A18 PA3/A19 PA4/A20 PA5/A21 PA6/A22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
P17/TIOCB2/TCLKD P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0 Vss P2Vcc P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P77/TxD3 P76/RxD3 P75/TMO3/SCK3 P74/TMO2/MRES P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/TMCI23/CS5 P70/TMRI01/TMCI01/CS4 PG4/CS0 PG3/Rx/CS1 PG2/Tx/CS2 PG1/CS3/IRQ7 PG0/IRQ6 PE0/D0 PE1/D1 PE2/D2 PE3/D3 PE4/D4
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
FP-144J/FP-144JV (top view)
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37
Vref P40/AN0 P41/AN1 P42/AN2 P43/AN3 AVss P44/AN4 P45/AN5 P46/AN6 P47/AN7 P90/AN8 P91/AN9 P92/AN10 P93/AN11 P94/AN12 P95/AN13 P96/AN14/DA0 P97/AN15/DA1 Vss PJ0 PJ1 PJ2 PJ3 PJ4 PJ5 PJ6 PJ7 PH0 PH1 PH2 PH3 PH4 PH5 PH6 PH7 PA7/A23
88 0.47 F
Figure 1.5 Pin Arrangement of H8S/2552 Group (FP-144J and FP-144JV)
Rev. 6.00 Sep. 24, 2009 Page 7 of 928 REJ09B0099-0600
Section 1 Overview
108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
P27/TIOCB5 P26/TIOCA5 P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 RES STBY MD1 MD0 Vcc EXTAL Vss XTAL MD2 NMI OSC1 OSC2 VCL* TEST Vss PF7/ P1Vcc PF6/AS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2 P52/SCK2 P51/RxD2 P50/TxD2 AVcc
Notes: * An external capacitor must be connected to the VCL pin. (Do not connect to the system power.) 1. Powers within specified voltages must be supplied to all power supply pins. If not, this LSI may not operate correctly. 2. Capacitors for stabilization should be inserted near the pin between the power supply pins (P1Vcc (14, 84), P2Vcc (118), Vcc (96)) and Vss pin. For an example of connection, see section 21.9.2, Note on Board Design.
PE5/D5 PE6/D6 PE7/D7 PD0/D8 PD1/D9 PD2/D10 PD3/D11 PD4/D12 PD5/D13 PD6/D14 PD7/D15 Vss PC0/A0 P1Vcc PC1/A1 PC2/A2 PC3/A3 PC4/A4 PC5/A5 PC6/A6 PC7/A7 PB0/A8 PB1/A9 PB2/A10 PB3/A11 PB4/A12 PB5/A13 PB6/A14 PB7/A15 PA0/A16 PA1/A17 PA2/A18 PA3/A19 PA4/A20 PA5/A21 PA6/A22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
P17/TIOCB2/TCLKD P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0 Vss P2Vcc P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 P77/TxD3 P76/RxD3 P75/TMO3/SCK3 P74/TMO2/MRES P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/TMCI23/CS5 P70/TMRI01/TMCI01/CS4 PG4/CS0 PG3/CS1 PG2/CS2 PG1/CS3/IRQ7 PG0/IRQ6 PE0/D0 PE1/D1 PE2/D2 PE3/D3 PE4/D4
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
FP-144J/FP-144JV (top view)
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37
Vref P40/AN0 P41/AN1 P42/AN2 P43/AN3 AVss P44/AN4 P45/AN5 P46/AN6 P47/AN7 P90/AN8 P91/AN9 P92/AN10 P93/AN11 P94/AN12 P95/AN13 P96/AN14/DA0 P97/AN15/DA1 Vss PJ0 PJ1 PJ2 PJ3 PJ4 PJ5 PJ6 PJ7 PH0 PH1 PH2 PH3 PH4 PH5 PH6 PH7 PA7/A23
88 0.47 F
Figure 1.6 Pin Arrangement of H8S/2506 Group (FP-144J and FP-144JV)
Rev. 6.00 Sep. 24, 2009 Page 8 of 928 REJ09B0099-0600
Section 1 Overview
A 15
P17/ TIOCB2/ TCLKD Vss
B
P26/ TIOCA5 P27/ TIOCB5
C
P23/ TIOCD3 P25/ TIOCB4
D
P20/ TIOCA3 P21/ TIOCB3 P22/ TIOCC3 P24/ TIOCA4
E
MD1
F
EXTAL
G
XTAL
H
Vss
J
OSC2
K
Vss
L
PF6/ AS PF5/ RD PF4/ HWR PF2/ WAIT
M
PF3/ LWR/ ADTRG/ IRQ3 PF1/ BACK/ BUZZ P52/ SCK2
N
PF0/ BREQ/ IRQ2 P51/ RxD2
P
P50/ TxD2
R
Vref
15
14
STBY
Vcc
Vss
Vss
OSC1
Vss
AVcc
Vref
14
13
Vss
P15/ P16/ TIOCB1/ TIOCA2/ TCLKC IRQ1 P13/ P14/ TIOCD0/ TIOCA1/ TCLKB IRQ0 P10/ TIOCA0
RES
Vss
Vss
MD2
VCL
PF7/
AVcc
AVcc
Vref
13
12
Vss
MD0
Vss
Vss
NMI
TEST
P1Vcc
AVcc
P40/ AN0 P44/ AN4 P47/ AN7 P93/ AN11 P96/ AN14/ DA0
P41/ AN1 P43/ AN3 P45/ AN5 P91/ AN9
AVss
12
11
Vss
P12/ P11/ TIOCC0/ TIOCB0 TCLKA P2Vcc P2Vcc
P42/ AN2 P90/ AN8 P94/ AN12 P97/ AN15/ DA1
AVss
11
10
Vss
Vss
P46/ AN6 P92/ AN10
10
9
P37/ TxD4 P33/ TxD1/ SCL1 P77/ TxD3 P73/ TMO1/ CS7 P70/ TMRI01/ TMCI01/ CS4 PG2/ Tx/ CS2 PE0/ D0 PE3/ D3 PE5/ D5
P36/ RxD4 P32/ SCK0/ SDA1/ IRQ4 P76/ RxD3 P72/ TMO0/ CS6 PG4/ CS0 PG1/ CS3/ IRQ7 PE2/ D2 PE4/ D4 PE7/ D7
P2Vcc
P2Vcc P35/ SCK1/ SCK4/ SCL0/ IRQ5 P31/ RxD0 P75/ TMO3/ SCK3 PG3/ Rx/ CS1 PE1/ D1 PD1/ D9 PD3/ D11 PD5/ D13 PD4/ D12 PD6/ D14 PD7/ D15 PC0/ A0 P1Vcc P1Vcc PC3/ A3 PC4/ A4 PC6/ A6 PC5/ A5 PC7/ A7 PB0/ A8 PB2/ A10 PB1/ A9 PB6/ A14 PB3/ A11 PB5/ A13 PB4/ A12
9
8
P34/ RxD1/ SDA0 P30/ TxD0 P74/ TMO2/ MRES P71/ TMRI23/ TMCI23/ CS5 PG0/ IRQ6 PE6/ D6 PD0/ D8 PD2/ D10
BP-176V (Top View)
Vss
P95/ AN13
8
7
PJ1
PJ0
Vss
Vss
7
6
PJ4
PJ3
PJ2
Vss
6
5
PH1
PJ7
PJ6
PJ5
5
4
PA3/ A19 PA1/ A17 PA0/ A16 PB7/ A15
PH4
PH2
PH0
4
3
P1Vcc
P1Vcc
P1Vcc
PH7
PH5
PH3
3
2
Vss
Vss
PC2/ A2 PC1/ A1
PA4/ A20 PA2/ A18
PA6/ A22 PA5/ A21
PH6
2
1
Vss
Vss
Vss
PA7/ A23
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
INDEX
Notes: 1. Supply given voltages to all the power pins. If not, this LSI may not operate correctly. 2. An external capacitor must be connected to the VCL pin. (Do not apply system power.) 3. External capacitors must be connected between a Vss pin and the following pins: each supply power pin, P1Vcc (G3, K12), P2Vcc (D9), Vcc (F14). For an example of connection, see section 21.9.2, Note on Board Design.
J13 0.47F
Figure 1.7 Pin Arrangement of H8S/2552 Group (BP-176V)
Rev. 6.00 Sep. 24, 2009 Page 9 of 928 REJ09B0099-0600
Section 1 Overview
A 15
P17/ TIOCB2/ TCLKD Vss
B
P26/ TIOCA5 P27/ TIOCB5
C
P23/ TIOCD3 P25/ TIOCB4
D
P20/ TIOCA3 P21/ TIOCB3
E
MD1
F
EXTAL
G
XTAL
H
Vss
J
OSC2
K
Vss
L
PF6/ AS PF5/ RD PF4/ HWR PF2/ WAIT
M
PF3/ LWR/ ADTRG/ IRQ3 PF1/ BACK/ BUZZ P52/ SCK2
N
PF0/ BREQ/ IRQ2 P51/ RxD2
P
P50/ TxD2
R
Vref
15
14
STBY
Vcc
Vss
Vss
OSC1
Vss
AVcc
Vref
14
13
Vss
P15/ P16/ P22/ TIOCB1/ TIOCA2/ TIOCC3 TCLKC IRQ1 P13/ P14/ P24/ TIOCD0/ TIOCA1/ TIOCA4 TCLKB IRQ0 P10/ TIOCA0 P12/ P11/ TIOCC0/ TIOCB0 TCLKA P2Vcc P2Vcc
RES
Vss
Vss
MD2
VCL
PF7/
AVcc
AVcc
Vref
13
12
Vss
MD0
Vss
Vss
NMI
TEST
P1Vcc
AVcc
P40/ AN0 P44/ AN4 P47/ AN7 P93/ AN11 P96/ AN14/ DA0
P41/ AN1 P43/ AN3 P45/ AN5 P91/ AN9
AVss
12
11
Vss
P42/ AN2 P90/ AN8 P94/ AN12 P97/ AN15/ DA1
AVss
11
10
Vss
Vss
P46/ AN6 P92/ AN10
10
9
P37/ TxD4 P33/ TxD1/ SCL1 P77/ TxD3 P73/ TMO1/ CS7 P70/ TMRI01/ TMCI01/ CS4 PG2/ CS2 PE0/ D0 PE3/ D3 PE5/ D5
P36/ RxD4 P32/ SCK0/ SDA1/ IRQ4 P76/ RxD3 P72/ TMO0/ CS6 PG4/ CS0 PG1/ CS3/ IRQ7 PE2/ D2 PE4/ D4 PE7/ D7
P2Vcc
P2Vcc P35/ SCK1/ SCK4/ SCL0/ IRQ5 P31/ RxD0 P75/ TMO3/ SCK3 PG3/ CS1 PE1/ D1 PD1/ D9 PD3/ D11 PD5/ D13 PD4/ D12 PD6/ D14 PD7/ D15 PC0/ A0 PC3/ A3 PC4/ A4 PC6/ A6 PC5/ A5 PC7/ A7 PB0/ A8 PB2/ A10 PB1/ A9 PB6/ A14 PB3/ A11 PB5/ A13 PB4/ A12
9
8
P34/ RxD1/ SDA0 P30/ TxD0 P74/ TMO2/ MRES P71/ TMRI23/ TMCI23/ CS5 PG0/ IRQ6 PE6/ D6 PD0/ D8 PD2/ D10
BP-176V (Top view)
Vss
P95/ AN13
8
7
PJ1
PJ0
Vss
Vss
7
6
PJ4
PJ3
PJ2
Vss
6
5
PH1
PJ7
PJ6
PJ5
5
4
P1Vcc
P1Vcc
PA3/ A19 PA1/ A17 PA0/ A16 PB7/ A15
PH4
PH2
PH0
4
3
P1Vcc
P1Vcc
P1Vcc
PH7
PH5
PH3
3
2
Vss
Vss
PC2/ A2 PC1/ A1
PA4/ A20 PA2/ A18
PA6/ A22 PA5/ A21
PH6
2
1
Vss
Vss
Vss
PA7/ A23
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
INDEX
Notes: 1. Supply given voltages to all the power pins. If not, this LSI may not operate correctly. 2. An external capacitor must be connected to the VCL pin. (Do not apply system power.) 3. External capacitors must be connected between a Vss pin and the following pins: each supply power pin, P1Vcc (G3, K12), P2Vcc (D9), Vcc (F14). For an example of connection, see section 21.9.2, Note on Board Design.
J13 0.47F
Figure 1.8 Pin Arrangement of H8S/2506 Group (BP-176V)
Rev. 6.00 Sep. 24, 2009 Page 10 of 928 REJ09B0099-0600
Section 1 Overview
1.3.2
Pin Arrangements in Each mode
Pin arrangements in each mode are shown below. Table 1.1
Pin No.
Pin Arrangements in Operating Mode
Pin Name Mode 7 PE5 PE6 PE7 PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 Vss PC0 P1Vcc PC1 PC2 PC3 PC4 PC5 Power Supply Flash Memory Programmer Mode*5 Source OE WE CE D0 D1 D2 D3 D4 D5 D6 D7 Vss A0 Vcc A1 A2 A3 A4 A5 P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc Vss P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc
FP-144J, FP-144JV BP-176V*4 Mode 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 A1 C3 B1 C2 D3 C1 D2 E4 D1 E3 E2 PE5/D5 PE6/D6 PE7/D7 D8 D9 D10 D11 D12 D13 D14 D15
G2, G1, Vss F2, F1, E1 F4 PC0/A0
H4, H3, P1Vcc G4, G3, F3 H1 H2 J4 J3 J1 PC1/A1 PC2/A2 PC3/A3 PC4/A4 PC5/A5
Rev. 6.00 Sep. 24, 2009 Page 11 of 928 REJ09B0099-0600
Section 1 Overview
Pin No.
Pin Name Mode 7 PC6 PC7 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0 PJ7 PJ6 Flash Memory Programmer Mode*5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
FP-144J, FP-144JV BP-176V*4 Mode 6 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 J2 K4 K3 K1 K2 L3 L1 L2 L4 M1 M2 M3 N1 M4 N2 P1 P2 R1 N3 R2 P3 N4 R3 P4 M5 R4 N5 P5 PC6/A6 PC7/A7 PB0/A8 PB1/A9 PB2/A10 PB3/A11 PB4/A12 PB5/A13 PB6/A14 PB7/A15 PA0/A16 PA1/A17 PA2/A18 PA3/A19 PA4/A20 PA5/A21 PA6/A22 PA7/A23 PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0 PJ7 PJ6
Power Supply Source P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc
Rev. 6.00 Sep. 24, 2009 Page 12 of 928 REJ09B0099-0600
Section 1 Overview
Pin No.
Pin Name Mode 7 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0 Vss P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8 P47/AN7 P46/AN6 P45/AN5 P44/AN4 AVss P43/AN3 P42/AN2 P41/AN1 P40/AN0 Vref AVcc P50/TxD2 Flash Memory Programmer Mode*5 NC NC NC NC NC NC Vss NC NC NC NC NC NC NC NC NC NC NC NC Vss NC NC NC NC Vcc Vcc NC
FP-144J, FP-144JV BP-176V*4 Mode 6 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 R5 M6 N6 P6 M7 N7 R7, R6, P8, P7 M8 N8 R8 M9 N9 R9 P9 M10 N10 R10 P10 N11 R12, R11 P11 M11 P12 N12 R15, R14, R13 P14, P13, N13, M12 P15 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0 Vss P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8 P47/AN7 P46/AN6 P45/AN5 P44/AN4 AVss P43/AN3 P42/AN2 P41/AN1 P40/AN0 Vref AVcc P50/TxD2
Power Supply Source P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc Vss AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVcc AVss AVcc AVcc AVcc AVcc Vref AVcc P1Vcc
Rev. 6.00 Sep. 24, 2009 Page 13 of 928 REJ09B0099-0600
Section 1 Overview
Pin No.
Pin Name Mode 7 P51/RxD2 P52/SCK2 PF0/IRQ2 PF1/BUZZ PF2 Flash Memory Programmer Mode*5 NC NC Vcc NC NC Vcc NC NC NC Vcc NC Vss Vss VCL NC Vss Vcc Vss XTAL Vss
FP-144J, FP-144JV BP-176V*4 Mode 6 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 N14 M13 N15 M14 L12 M15 L13 L14 L15 K12 K13 K15, K14 J12 J13 J15 J14 H12 H13 G15 P51/RxD2 P52/SCK2 PF0/BREQ/IRQ2 PF1/BACK/BUZZ PF2/WAIT
Power Supply Source P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc Vss Vcc VCL Vcc Vcc Vss
PF3/LWR/ADTRG/ PF3/ADTRG/IRQ3 IRQ3 HWR RD AS P1Vcc PF7/ Vss TEST VCL OSC2 OSC1 NMI MD2 XTAL PF4 PF5 PF6 P1Vcc PF7/ Vss TEST VCL OSC2 OSC1 NMI MD2 XTAL Vss
H15, H14, Vss G14, G13, G12, F13, F12 F15 F14 E12 E15 E14 E13 EXTAL Vcc MD0 MD1 STBY RES
95 96 97 98 99 100
EXTAL Vcc MD0 MD1 STBY RES
EXTAL Vcc Vss Vss Vcc RES
Vcc Vcc Vcc Vcc Vcc Vcc
Rev. 6.00 Sep. 24, 2009 Page 14 of 928 REJ09B0099-0600
Section 1 Overview
Pin No.
Pin Name Mode 7 P20/TIOCA3 P21/TIOCB3 P22/TIOCC3 P23/TIOCD3 P24/TIOCA4 P25/TIOCB4 P26/TIOCA5 P27/TIOCB5 P17/TIOCB2/ TCLKD Flash Memory Programmer Mode*5 NC NC NC NC NC NC NC NC NC Vss NC Vss NC NC NC NC Vss
FP-144J, FP-144JV BP-176V*4 Mode 6 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 D15 D14 D13 C15 D12 C14 B15 B14 A15 C13 B13 C12 B12 D11 C11 B11 B10, A14, A13, A12, A11, A10 D10, D9, C10, C9 A9 B9 D8 C8 A8 B8 P20/TIOCA3 P21/TIOCB3 P22/TIOCC3 P23/TIOCD3 P24/TIOCA4 P25/TIOCB4 P26/TIOCA5 P27/TIOCB5 P17/TIOCB2/ TCLKD
Power Supply Source P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc Vss
P16/TIOCA2/IRQ1 P16/TIOCA2/IRQ1 P15/TIOCB1/ TCLKC P15/TIOCB1/ TCLKC
P14/TIOCA1/IRQ0 P14/TIOCA1/IRQ0 P13/TIOCD0/ TCLKB P12/TIOCC0/ TCLKA P11/TIOCB0 P10/TIOCA0 Vss P13/TIOCD0/ TCLKB P12/TIOCC0/ TCLKA P11/TIOCB0 P10/TIOCA0 Vss
118 119 120 121 122 123 124
P2Vcc P37/TxD4 P36/RxD4 P35/SCK1/SCK4/ SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/ IRQ4
P2Vcc P37/TxD4 P36/RxD4 P35/SCK1/SCK4/ SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/ IRQ4
Vcc NC NC NC NC NC NC
P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc
Rev. 6.00 Sep. 24, 2009 Page 15 of 928 REJ09B0099-0600
Section 1 Overview
Pin No.
Pin Name Mode 7 P31/RxD0 P30/TxD0 P77/TxD3 P76/RxD3 P75/TMO3/SCK3 Flash Memory Programmer Mode*5 NC NC NC NC NC NC NC NC NC NC NC
1
FP-144J, FP-144JV BP-176V*4 Mode 6 125 126 127 128 129 130 131 132 133 134 135 136 D7 C7 A7 B7 D6 C6 A6 B6 C5 A5 B5 D5 P31/RxD0 P30/TxD0 P77/TxD3 P76/RxD3 P75/TMO3/SCK3
Power Supply Source P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P2Vcc P1Vcc P1Vcc
P74/TMO2/MRES P74/TMO2/MRES P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/ TMCI23/CS5 P70/TMRI01/ TMCI01/CS4 PG4/CS0 HRxD*
1 2
P73/TMO1 P72/TMO0 P71/TMRI23/ TMCI23 P70/TMRI01/ TMCI01 PG4 HRxD*
2
NC
PG3/Rx/CS1* PG3/CS1* 137 A4 HTxD*1 PG2/Tx/CS2* PG2/CS2*3 138 139 140 141 142 143 144 Notes: 1. 2. 3. 4. 5. B4 C4 A3 D4 B3 A2 B2
3
PG3/Rx* PG3*3 HTxD*1
NC
2
P1Vcc
2
PG2/Tx* PG2*3
PG1/CS3/IRQ7 PG0/IRQ6 PE0/D0 PE1/D1 PE2/D2 PE3/D3 PE4/D4
PG1/IRQ7 PG0/IRQ6 PE0 PE1 PE2 PE3 PE4
NC NC NC NC NC Vcc Vss
P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc P1Vcc
Symbol name for the H8S/2556 Group Symbol name for the H8S/2552 Group Symbol name for the H8S/2506 Group Available only in the H8S/2552 Group and H8S/2506 Group. NC pins should be left open.
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Section 1 Overview
1.3.3
Pin Functions
Table 1.2 lists the pins functions in each mode. Table 1.2 Pin Functions
Pin No. Type Power supply Symbol Vcc P1Vcc FP-144J, 2 FP-144JV BP-176V* I/O 96 14, 84 F14 F3, G3, G4, H3, H4, K12 C9, C10, D9, D10 I I Function Power supply pin. Connect this pin to the system power supply. Power supply pin for ports indicated that its power is supplied by P1Vcc (see table 1.1). Pins for connecting a capacitor to stabilize the internal step-down voltage. Power supply pin for ports indicated that its power is supplied by P2Vcc (see table 1.1). VCL 88 J13 O Pin for connecting the on-chip step-down power supply to a capacitor for voltage stabilization. Must not be directly connected to a power supply. A capacitor of 0.47 F must be connected between this pin and Vss. (Place close to the pin.) Ground pins. Connect this pin to the system power supply (0V).
P2Vcc
118
I
VSS
12, 54, 86, 94, 117
I G2, G1, F2, F1, E1, R7, R6, P8, P7, K15, K14, H15, H14, G14, G13, G12, F13, F12, B10, A14, A13, A12, A11, A10 G15 I
Clock
XTAL
93
For connection to a crystal resonator. For examples of connecting crystal resonator and external clock input, see section 21, Clock Pulse Generator. For connection to a crystal resonator or a ceramic resonator. This pin can be also used for external clock input. For examples of connecting crystal resonator and external clock input, see section 21, Clock Pulse Generator.
EXTAL
95
F15
I
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Section 1 Overview
Pin No. Type Clock Symbol OSC1 FP-144J, 2 FP-144JV BP-176V* I/O 90 J14 I Function Connects to a 32.768 kHz crystal resonator. For examples of connecting crystal resonator, see section 21, Clock Pulse Generator. Connects to a 32.768 kHz crystal resonator. For examples of connecting crystal resonator, see section 21, Clock Pulse Generator. Supplies clock pulses to external devices. Sets the operating mode. Inputs at these pins should not be changed during operation. Be sure to fix the levels of the mode pins (MD2 to MD0) by pull-down or pull-up, except for mode changing. Reset input pin. When this pin is low, this LSI enters the power-on reset state. Reset input pin. When this pin is low, this LSI enters the manual reset state. When this pin is low, a transition is made to hardware standby mode. Indicates that an external bus master is requesting bus mastership. Indicates that the bus is released to an external bus master. Test pin. Connect to a Vss. Nonmaskable interrupt pin. If this pin is not used, it should be fixed-high. These pins request maskable interrupts.
OSC2
89
J15
I
Operating MD2 mode MD1 control MD0 System control RES*
1
85 92 98 97 100
1
K13 H13 E15 E12 E13 C6 E14 N15 M14 J12 H12 B4 C4 D8 B8 M15 N15 C13 C12
O I
I I I I O I I I
MRES* STBY* BREQ BACK TEST* Interrupts NMI* IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 IRQ2 IRQ1 IRQ0
1 1 1
130 99 77 78 87 91 138 139 121 124 80 77 110 112
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Section 1 Overview
Pin No. Type Address bus Symbol FP-144J, 2 FP-144JV BP-176V* I/O R1, P2, P1, N2, M4, N1, M3, M2, M1, L4, L2, L1, L3, K2, K1, K3, K4, J2, J1, J3, J4, H2, H1, F4 E2, E3, D1, E4, D2, C1, D3, C2, B1, C3, A1, B2, A2, B3, D4, A3 A6 B6 C5 A5 B4 A4 D5 B5 L15 L14 L13 M15 O O O O Indicates that data output on the address bus is valid when this pin is a low level. Indicates that an access to the external address space is in progress when this pin is a low level. Strobe signal. Indicates that data on the upper bits (D15 to D8) of the data bus is valid during a write access. Strobe signal. Indicates that data on the upper bits (D7 to D0) of the data bus is valid during a write access. O Function Outputs addresses.
A23 to A0 37 to 15, 13
Data bus
D15 to D0 11 to 1, 144 to 140
I/O
Bi-directional bus.
Bus control
CS7 CS6 CS5 CS4 CS3 CS2 CS1 CS0 AS RD HWR LWR
131 132 133 134 138 137 136 135 83 82 81 80
O
Chip select signals for areas 7 to 0. Pins CS2 and CS1 are not supported by the H8S/2556 Group.
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Section 1 Overview
Pin No. Type Bus control Symbol WAIT FP-144J, 2 FP-144JV BP-176V* I/O 79 109 111 113 114 116 115 114 113 112 111 110 109 101 102 103 104 105 106 107 108 129 130 131 132 133 134 133 134 C5 A5 C5 A5 I Counter reset input pins. I Pins for external clock input to the counter L12 A15 B13 B12 D11 B11 C11 D11 B12 C12 B13 C13 A15 D15 D14 D13 C15 D12 C14 B15 B14 D6, C6, A6, B6 O I/O I/O Pins for the TGRA_4 and TGRB_4 input capture input, output compare output, or PWM output. Pins for the TGRA_5 and TGRB_5 input capture input, output compare output, or PWM output. Compare-match output pins I/O I/O I/O Pins for the TGRA_1 and TGRB_1 input capture input, output compare output, or PWM output. Pins for the TGRA_2 and TGRB_2 input capture input, output compare output, or PWM output. Pins for the TGRA_3 and TGRD_3 input capture input, output compare output, or PWM output. I/O Pins for the TGRA_0 to TGRD_0 input capture input, output compare output, or PWM output. I I Function Requests insertion of wait cycles in a bus cycle when the access is made to the external address space. These pins input an external clock.
16-bit TCLKD timerTCLKC pulse unit TCLKB (TPU) TCLKA TIOCA0 TIOCB0 TIOCC0 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2 TIOCA3 TIOCB3 TIOCC3 TIOCD3 TIOCA4 TIOCB4 TIOCA5 TIOCB5 8-bit timer TMO3 TMO2 TMO1 TMO0 TMCI23 TMCI01 TMRI23 TMRI01
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Section 1 Overview
Pin No. Type Symbol FP-144J, 2 FP-144JV BP-176V* I/O 78 M14 O Function Outputs pulse signal divided by the watchdog timer.
BUZZ Watch dog timer (WDT) Serial communication interface (SCI)/ smart card interface TxD4 TxD3 TxD2 TxD1 TxD0 RxD4 RxD3 RxD2 RxD1 RxD0 SCK4 SCK3 SCK2 SCK1 SCK0 I C bus interface 2 (IIC2)
2
119 127 74 123 126 120 128 75 122 125 121 129 76 121 124 123 121 124 122 55 to 66, 68 to 71
A9 A7 P15 A8 C7 B9 B7 N14 C8 D7 D8 D6 M13 D8 B8 A8 D8 B8 C8
O
Data output pins
I
Data input pins
I/O
Clock input/output pins SCK4 and SCK1 are NMOS push-pull outputs.
SCL1 SCL0 SDA1 SDA0
I/O
I C clock input/output pins. These pins are capable of driving bus. Pin SCL0 is an NMOS open-drain output. I C data input/output pins. These pins are capable of driving bus. Pin SDA0 is an NMOS open-drain output. Analog input pins for A/D converter.
2
2
I/O
A/D AN15 to converter AN0
I M8, N8, R8, M9, N9, R9, P9, M10, N10, R10, P10, N11, P11, M11, P12, N12 M15 M8 N8 I O
ADTRG D/A DA1 converter DA0
80 55 56
Pin for input of an external trigger to start A/D conversion Analog output pins for the D/A converter.
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Section 1 Overview
Pin No. Type Symbol FP-144J, 2 FP-144JV BP-176V* I/O 73 M12, N13, I P13, P14 R11, R12 R13, R14, R15 A4 I I Function Power supply pin for the A/D and D/A converters. If both converters are not used, connect this pin to the system power supply (Vcc level). Ground pin for the A/D and D/A converters. Connect this pin to the system power supply (0 V). Reference voltage input pin for the A/D and D/A converters. If both converters are not used, connect this pin to the system power supply (Vcc level). Transmit data output pin for the IEB. (Supported only by the H8S/2552 Group.) 136 D5 I Receive data input pin for the IEB. (Supported only by the H8S/2552 Group.) Controller HTxD area network (HCAN) HRxD 137 A4 O Pin for CAN bus transmission. (Supported only by the H8S/2556 Group.) 136 D5 I Pin for CAN bus reception. (Supported only by the H8S/2556 Group.) I/O ports P17 to P10 109 to 116 A15, C13, B13, C12, B12, D11, C11, B11 B14, B15, C14, D12, C15, D13, D14, D15 A9, B9, D8, C8, A8, B8, D7, C7 I/O 8-bit I/O pins
A/D AVcc converter, D/A converter AVss Vref
67 72
IEBus Tx controller (IEB) Rx
TM
137
O
P27 to P20
108 to 101
I/O
8-bit I/O pins
P37 to P30
119 to 126
I/O
8-bit I/O pins. Pins P34 and P35 are NMOS push-pull outputs.
P47 to P40
63 to 66, 68 to 71
N10, R10, I P10, N11, P11, M11, P12, N12 M13, N14, I/O P15
8-bit input pins
P52 to P50
76 to 74
3-bit I/O pins
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Section 1 Overview
Pin No. Type I/O ports Symbol P77 to P70 FP-144J, 2 FP-144JV BP-176V* I/O 127 to 134 A7, B7, D6, C6, A6, B6, C5, A5 M8, N8, R8, M9, N9, R9, P9, M10 R1, P2, P1, N2, M4, N1, M3, M2 M1, L4, L2, L1, L3, K2, K1, K3 K4, J2, J1, J3, J4, H2, H1, F4 E2, E3, D1, E4, D2, C1, D3, C2 B1, C3, A1, B2, A2, B3, D4, A3 K13, L15, L14, L13, M15, L12, M14, N15 B5, D5, A4, B4, C4 I/O Function 8-bit I/O pins
P97 to P90
55 to 62
I
8-bit input pins
PA7 to PA0
37 to 30
I/O
8-bit I/O pins
PB7 to PB0
29 to 22
I/O
8-bit I/O pins
PC7 to PC0
21 to 15, 13
I/O
8-bit I/O pins
PD7 to PD0
11 to 4
I/O
8-bit I/O pins
PE7 to PE0
3 to 1, 144 to 140 85, 83 to 77
I/O
8-bit I/O pins
PF7 to PF0
I/O
8-bit I/O pins
PG4 to PG0
135 to 139
I/O
5-bit I/O pins Pins PG3 and PG2 are not supported by the H8S/2556 Group.
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Section 1 Overview
Pin No. Type I/O ports Symbol PH7 to PH0 FP-144J, 2 FP-144JV BP-176V* I/O 38 to 45 N3, R2, P3, N4, R3, P4, M5, R4 N5, P5, R5, M6, N6, P6, M7, N7 I/O Function 8-bit I/O pins
PJ7 to PJ0
46 to 53
I/O
8-bit I/O pins
Notes: 1. Countermeasure against noise should be executed or may result in malfunction. 2. Available only in the H8S/2552 Group and H8S/2506 Group.
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Section 2 CPU
Section 2 CPU
The H8S/2000 CPU is a high-speed central processing unit with an internal 32-bit architecture that is upward-compatible with the H8/300 and H8/300H CPUs. The H8S/2000 CPU has sixteen 16-bit general registers, can address a 16-Mbyte linear address space, and is ideal for realtime control. This section describes the H8S/2000 CPU. The usable modes and address spaces differ depending on the product. For details on each product, see section 3, MCU Operating Modes.
2.1
Features
* Upward-compatible with H8/300 and H8/300H CPU Can execute H8/300 and H8/300H CPU object programs * General-register architecture Sixteen 16-bit general registers also usable as sixteen 8-bit registers or eight 32-bit registers * 65 basic instructions 8/16/32-bit arithmetic and logic instructions Multiply and divide instructions Powerful bit-manipulation instructions * Eight addressing modes Register direct [Rn] Register indirect [@ERn] Register indirect with displacement [@(d:16,ERn) or @(d:32,ERn)] Register indirect with post-increment or pre-decrement [@ERn+ or @-ERn] Absolute address [@aa:8, @aa:16, @aa:24, or @aa:32] Immediate [#xx:8, #xx:16, or #xx:32] Program-counter relative [@(d:8,PC) or @(d:16,PC)] Memory indirect [@@aa:8] * 16-Mbyte address space Program: 16 Mbytes Data: 16 Mbytes * High-speed operation All frequently-used instructions execute in one or two states 8/16/32-bit register-register add/subtract : 1 state 8 x 8-bit register-register multiply : 12 states 16 / 8-bit register-register divide : 12 states
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Section 2 CPU
16 x 16-bit register-register multiply : 20 states 32 / 16-bit register-register divide : 20 states * Two CPU operating modes Normal mode* Advanced mode * Power-down state Transition to power-down state by a SLEEP instruction CPU clock speed selection Note: * Normal mode is not available in this LSI. 2.1.1 Differences between H8S/2600 CPU and H8S/2000 CPU
The differences between the H8S/2600 CPU and the H8S/2000 CPU are shown below. * Register configuration The MAC register is supported by the H8S/2600 CPU only. * Basic instructions The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported by the H8S/2600 CPU only. * The number of execution states of the MULXU and MULXS instructions;
Execution States Instruction MULXU Mnemonic MULXU.B Rs, Rd MULXU.W Rs, ERd MULXS MULXS.B Rs, Rd MULXS.W Rs, ERd H8S/2600 3 4 4 5 H8S/2000 12 20 13 21
In addition, there are differences in address space, CCR and EXR register functions, and powerdown modes, etc., depending on the model.
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Section 2 CPU
2.1.2
Differences from H8/300 CPU
In comparison to the H8/300 CPU, the H8S/2000 CPU has the following enhancements: * More general registers and control registers Eight 16-bit expanded registers, and one 8-bit and two 32-bit control registers, have been added. * Expanded address space Normal mode supports the same 64-kbyte address space as the H8/300 CPU. Advanced mode supports a maximum 16-Mbyte address space. * Enhanced addressing The addressing modes have been enhanced to make effective use of the 16-Mbyte address space. * Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Signed multiply and divide instructions have been added. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. * Higher speed Basic instructions execute twice as fast. 2.1.3 Differences from H8/300H CPU
In comparison to the H8/300H CPU, the H8S/2000 CPU has the following enhancements: * Additional control register One 8-bit control registers have been added. * Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. * Higher speed Basic instructions execute twice as fast.
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Section 2 CPU
2.2
CPU Operating Modes
The H8S/2000 CPU has two operating modes: normal and advanced. Normal mode supports a maximum 64-kbyte address space. Advanced mode supports a maximum 16-Mbyte total address space. The mode is selected by the mode pins. 2.2.1 Normal Mode
The exception vector table and stack have the same structure as in the H8/300 CPU. * Address Space Linear access is provided to a maximum address space of 64 kbytes. * Extended Registers (En) The extended registers (E0 to E7) can be used as 16-bit registers, or as the upper 16-bit segments of 32-bit registers. When En is used as a 16-bit register it can contain any value, even when the corresponding general register (Rn) is used as an address register. If the general register is referenced in the register indirect addressing mode with pre-decrement (@-Rn) or post-increment (@Rn+) and a carry or borrow occurs, however, the value in the corresponding extended register (En) will be affected. * Instruction Set All instructions and addressing modes can be used. Only the lower 16 bits of effective addresses (EA) are valid. * Exception Vector Table and Memory Indirect Branch Addresses In normal mode the top area starting at H'0000 is allocated to the exception vector table. One branch address is stored per 16 bits. Figure 2.1 shows the structure of the exception vector table in normal mode. For details of the exception vector table, see section 4, Exception Handling. The memory indirect addressing mode (@@aa:8) employed in the JMP and JSR instructions uses an 8-bit absolute address included in the instruction code to specify a memory operand that contains a branch address. In normal mode the operand is a 16-bit word operand, providing a 16-bit branch address. Branch addresses can be stored in the top area from H'0000 to H'00FF. Note that this area is also used for the exception vector table. * Stack Structure When the program counter (PC) is pushed onto the stack in a subroutine call, and the PC, condition-code register (CCR) and extended control register (EXR) are pushed onto the stack in exception handling, they are stored as shown in figure 2.2. EXR is not pushed onto the stack in interrupt control mode 0. For details, see section 4, Exception Handling.
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Section 2 CPU
Note: * Normal mode is not available in this LSI.
H'0000 H'0001 H'0002 H'0003 H'0004 H'0005 H'0006 H'0007 H'0008 H'0009 H'000A H'000B Reset exception vector
(Reserved for system use) Exception vector table Exception vector 1 Exception vector 2
Figure 2.1 Exception Vector Table (Normal Mode)
SP
PC (16 bits)
SP (SP *
2
EXR*1 Reserved*1*3 ) CCR CCR*3 PC (16 bits)
(a) Subroutine Branch Notes: 1. When EXR is not used it is not stored on the stack. 2. SP when EXR is not used. 3. lgnored when returning.
(b) Exception Handling
Figure 2.2 Stack Structure in Normal Mode 2.2.2 Advanced Mode
* Address Space Linear access is provided to a maximum 16-Mbyte address space. * Extended Registers (En)
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Section 2 CPU
The extended registers (E0 to E7) can be used as 16-bit registers, or as the upper 16-bit segments of 32-bit registers or address registers. * Instruction Set All instructions and addressing modes can be used. * Exception Vector Table and Memory Indirect Branch Addresses In advanced mode, the top area starting at H'00000000 is allocated to the exception vector table in units of 32 bits. In each 32 bits, the upper 8 bits are ignored and a branch address is stored in the lower 24 bits (figure 2.3). For details of the exception vector table, see section 4, Exception Handling.
H'00000000 Reserved Reset exception vector H'00000003 H'00000004
H'00000007 H'00000008 Exception vector table Exception vector 3 H'0000000B H'0000000C
H'00000010
Reserved Exception vector 1
Figure 2.3 Exception Vector Table (Advanced Mode) The memory indirect addressing mode (@@aa:8) employed in the JMP and JSR instructions uses an 8-bit absolute address included in the instruction code to specify a memory operand that contains a branch address. In advanced mode, the operand is a 32-bit longword operand, providing a 32-bit branch address. The upper 8 bits of these 32 bits is a reserved area that is regarded as H'00. Branch addresses can be stored in the area from H'00000000 to H'000000FF. Note that the first part of this range is also the exception vector table.
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Section 2 CPU
* Stack Structure In advanced mode, when the program counter (PC) is pushed onto the stack in a subroutine call, and the PC, condition-code register (CCR), and extended control register (EXR) are pushed onto the stack in exception handling, they are stored as shown in figure 2.4. When EXR is invalid, it is not pushed onto the stack. For details, see section 4, Exception Handling.
SP SP Reserved PC (24 bits) (SP *2 )
EXR*1 Reserved*1*3 CCR PC (24 bits)
(a) Subroutine Branch Notes: 1. When EXR is not used it is not stored on the stack. 2. SP when EXR is not used. 3. Ignored when returning.
(b) Exception Handling
Figure 2.4 Stack Structure in Advanced Mode
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Section 2 CPU
2.3
Address Space
Figure 2.5 shows a memory map of the H8S/2000 CPU. The H8S/2000 CPU provides linear access to a maximum 64-kbyte address space in normal mode, and a maximum 16-Mbyte (architecturally 4-Gbyte) address space in advanced mode. The usable modes and address spaces differ depending on the product. For details on each product, see section 3, MCU Operating Modes.
H'0000 64 kbytes H'FFFF H'00000000 16 Mbytes Program area
H'00FFFFFF Cannot be used by this LSI
Data area
H'FFFFFFFF (a) Normal Mode Note: Normal mode is not available in this LSI (b) Advanced Mode
Figure 2.5 Memory Map
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Section 2 CPU
2.4
Register Configuration
The H8S/2000 CPU has the internal registers shown in figure 2.6. There are two types of registers: general registers and control registers. Control registers are a 24-bit program counter (PC), an 8bit extended control register (EXR), and an 8-bit condition code register (CCR).
General Registers (Rn) and Extended Registers (En)
15 ER0 ER1 ER2 ER3 ER4 ER5 ER6 ER7 (SP) E0 E1 E2 E3 E4 E5 E6 E7 07 R0H R1H R2H R3H R4H R5H R6H R7H 07 R0L R1L R2L R3L R4L R5L R6L R7L 0
Control Registers (CR)
23 PC 0
EXR T
76543210 - - - - I2 I1 I0
76543210
CCR I UI H U N Z V C
Legend:
SP PC EXR T I2 to I0 CCR I UI :Stack pointer :Program counter :Extended control register :Trace bit :Interrupt mask bits :Condition-code register :Interrupt mask bit :User bit or interrupt mask bit* H U N Z V C :Half-carry flag :User bit :Negative flag :Zero flag :Overflow flag :Carry flag
Note: * The interrupt mask bit is not available in this LSI.
Figure 2.6 CPU Registers
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Section 2 CPU
2.4.1
General Registers
The H8S/2000 CPU has eight 32-bit general registers. These general registers are all functionally alike and can be used as both address registers and data registers. When a general register is used as a data register, it can be accessed as a 32-bit, 16-bit, or 8-bit register. Figure 2.7 illustrates the usage of the general registers. When the general registers are used as 32-bit registers or address registers, they are designated by the letters ER (ER0 to ER7). The ER registers divide into 16-bit general registers designated by the letters E (E0 to E7) and R (R0 to R7). These registers are functionally equivalent, providing a maximum sixteen 16-bit registers. The E registers (E0 to E7) are also referred to as extended registers. The R registers divide into 8-bit general registers designated by the letters RH (R0H to R7H) and RL (R0L to R7L). These registers are functionally equivalent, providing a maximum sixteen 8-bit 2egisters. The usage of each register can be selected independently. General register ER7 has the function of stack pointer (SP) in addition to its general-register function, and is used implicitly in exception handling and subroutine calls. Figure 2.8 shows the stack.
* Address registers * 32-bit registers * 16-bit registers * 8-bit registers
E registers (extended registers) (E0 to E7) ER registers (ER0 to ER7) R registers (R0 to R7) RL registers (R0L to R7L) RH registers (R0H to R7H)
Figure 2.7 Usage of General Registers
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Section 2 CPU
Free area SP (ER7)
Stack area
Figure 2.8 Stack Status 2.4.2 Program Counter (PC)
This 24-bit counter indicates the address of the next instruction the CPU will execute. The length of all CPU instructions is 2 bytes (one word), so the least significant PC bit is ignored. (When an instruction is fetched, the least significant PC bit is regarded as 0.) 2.4.3 Extended Control Register (EXR)
EXR is an 8-bit register that manipulates the LDC, STC, ANDC, ORC, and XORC instructions. When these instructions except for the STC instruction is executed, all interrupts including NMI will be masked for three states after execution is completed.
Bit 7 Bit Name T Initial Value 0 R/W R/W Description Trace Bit When this bit is set to 1, a trace exception is generated each time an instruction is executed. When this bit is cleared to 0, instructions are executed in sequence. 6 to 3 2 1 0 I2 I1 I0 All 1 1 1 1 R/W R/W R/W Reserved These bits are always read as 1. These bits designate the interrupt mask level (0 to 7). For details, see section 5, Interrupt Controller.
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Section 2 CPU
2.4.4
Condition-Code Register (CCR)
This 8-bit register contains internal CPU status information, including an interrupt mask bit (I) and half-carry (H), negative (N), zero (Z), overflow (V), and carry (C) flags. Operations can be performed on the CCR bits by the LDC, STC, ANDC, ORC, and XORC instructions. The N, Z, V, and C flags are used as branching conditions for conditional branch (Bcc) instructions.
Bit 7 Bit Name I Initial Value 1 R/W R/W Description Interrupt Mask Bit Masks interrupts other than NMI when set to 1. NMI is accepted regardless of the I bit setting. The I bit is set to 1 by hardware at the start of an exception-handling sequence. For details, see section 5, Interrupt Controller. 6 UI Undefined R/W User Bit or Interrupt Mask Bit Can be written and read by software using the LDC, STC, ANDC, ORC, and XORC instructions. This bit cannot be used as an interrupt mask bit in this LSI. 5 H Undefined R/W Half-Carry Flag When the ADD.B, ADDX.B, SUB.B, SUBX.B, CMP.B, or NEG.B instruction is executed, this flag is set to 1 if there is a carry or borrow at bit 3, and cleared to 0 otherwise. When the ADD.W, SUB.W, CMP.W, or NEG.W instruction is executed, the H flag is set to 1 if there is a carry or borrow at bit 11, and cleared to 0 otherwise. When the ADD.L, SUB.L, CMP.L, or NEG.L instruction is executed, the H flag is set to 1 if there is a carry or borrow at bit 27, and cleared to 0 otherwise. 4 U Undefined R/W User Bit Can be written and read by software using the LDC, STC, ANDC, ORC, and XORC instructions. 3 N Undefined R/W Negative Flag Stores the value of the most significant bit of data as a sign bit.
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Bit 2
Bit Name Z
Initial Value Undefined
R/W R/W
Description Zero Flag Set to 1 to indicate zero data, and cleared to 0 to indicate non-zero data.
1
V
Undefined
R/W
Overflow Flag Set to 1 when an arithmetic overflow occurs, and cleared to 0 at other times.
0
C
Undefined
R/W
Carry Flag Set to 1 when a carry occurs, and cleared to 0 otherwise. Used by: * * * Add instructions, to indicate a carry Subtract instructions, to indicate a borrow Shift and rotate instructions, to indicate a carry
The carry flag is also used as a bit accumulator by bit manipulation instructions.
2.4.5
Initial Values of CPU Registers
Reset exception handling loads the CPU's program counter (PC) from the vector table, clears the trace bit in EXR to 0, and sets the interrupt mask bits in CCR and EXR to 1. The other CCR bits and the general registers are not initialized. In particular, the stack pointer (ER7) is not initialized. The stack pointer should therefore be initialized by an MOV.L instruction executed immediately after a reset.
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2.5
Data Formats
The H8S/2000 CPU can process 1-bit, 4-bit (BCD), 8-bit (byte), 16-bit (word), and 32-bit (longword) data. Bit-manipulation instructions operate on 1-bit data by accessing bit n (n = 0, 1, 2, ..., 7) of byte operand data. The DAA and DAS decimal-adjust instructions treat byte data as two digits of 4-bit BCD data. 2.5.1 General Register Data Formats
Figure 2.9 shows the data formats in general registers.
Data Type
1-bit data
Register Number
RnH
Data Format
7 0 Don't care 76 54 32 10
7 1-bit data RnL Don't care
0
76 54 32 10
7 4-bit BCD data RnH Upper
43 Lower
0 Don't care
7 4-bit BCD data RnL Don't care Upper
43 Lower
0
7 Byte data RnH MSB
0 Don't care LSB 7 0 LSB
Byte data
RnL
Don't care MSB
Figure 2.9 General Register Data Formats (1)
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Data Type Word data
Register Number Rn
Data Format
15
0
MSB
LSB
Word data
15
En
0
MSB
LSB
Longword data
31
ERn
16 15 0
MSB
En
Rn
LSB
Legend:
ERn En Rn RnH RnL LSB : General register ER : General register E : General register R : General register RH : General register RL : Least significant bit
MSB : Most significant bit
Figure 2.9 General Register Data Formats (2)
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2.5.2
Memory Data Formats
Figure 2.10 shows the data formats in memory. The H8S/2000 CPU can access word data and longword data in memory, but word or longword data must begin at an even address. If an attempt is made to access word or longword data at an odd address, no address error occurs but the least significant bit of the address is regarded as 0, so the access starts at the preceding address. This also applies to instruction fetches. When ER7 is used as an address register to access the stack, the operand size should be word or longword.
Data Type Address
7 1-bit data Address L 7 6 5 4 3 2 1
Data Format
0 0
Byte data
Address L
MSB
LSB
Word data
Address 2M Address 2M+1
MSB LSB
Longword data
Address 2N Address 2N+1 Address 2N+2 Address 2N+3
MSB
LSB
Figure 2.10 Memory Data Formats
2.6
Instruction Set
The H8S/2000 CPU has 65 types of instructions. The instructions are classified by function in table 2.1.
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Table 2.1
Function
Instruction Classification
Instructions MOV POP* , PUSH* LDM* , STM*
3 5 5 1 1
Size B/W/L W/L L
3
Types 5
Data transfer
MOVFPE* , MOVTPE* Arithmetic operations ADD, SUB, CMP, NEG
B B/W/L B B/W/L L B/W W/L B B/W/L B/W/L 4 8 14 5 9 1 Total: 65 19
ADDX, SUBX, DAA, DAS INC, DEC ADDS, SUBS MULXU, DIVXU, MULXS, DIVXS EXTU, EXTS TAS*
4
Logic operations Shift Bit manipulation Branch System control
AND, OR, XOR, NOT SHAL, SHAR, SHLL, SHLR, ROTL, ROTR, ROTXL, ROTXR
BSET, BCLR, BNOT, BTST, BLD, BILD, BST, BIST, BAND, B BIAND, BOR, BIOR, BXOR, BIXOR Bcc*2, JMP, BSR, JSR, RTS TRAPA, RTE, SLEEP, LDC, STC, ANDC, ORC, XORC, NOP
Block data transfer EEPMOV
Legend: B: Byte W: Word L: Longword Notes: 1. POP.W Rn and PUSH.W Rn are identical to MOV.W @SP+, Rn and MOV.W Rn, @-SP. POP.L ERn and PUSH.L ERn are identical to MOV.L @SP+, ERn and MOV.L ERn, @-SP. 2. Bcc is the general name for conditional branch instructions. 3. Cannot be used in this LSI. 4. Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. 5. Only register ER0 to ER6 should be used when using the STM/LDM instruction.
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2.6.1
Table of Instructions Classified by Function
Tables 2.3 to 2.10 summarize the instructions in each functional category. The notation used in tables 2.3 to 2.10 is defined below. Table 2.2
Symbol Rd Rs Rn ERn (EAd) (EAs) EXR CCR N Z V C PC SP #IMM disp + - x /
Operation Notation
Description General register (destination)* General register (source)* General register* General register (32-bit register) Destination operand Source operand Extended control register Condition-code register N (negative) flag in CCR Z (zero) flag in CCR V (overflow) flag in CCR C (carry) flag in CCR Program counter Stack pointer Immediate data Displacement Addition Subtraction Multiplication Division Logical AND Logical OR Logical XOR
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Symbol :8/:16/:24/:32 Note: *
Description Move NOT (logical complement) 8-, 16-, 24-, or 32-bit length General registers include 8-bit registers (R0H to R7H, R0L to R7L), 16-bit registers (R0 to R7, E0 to E7), and 32-bit registers (ER0 to ER7).
Table 2.3
Instruction MOV
Data Transfer Instructions
Size*1 B/W/L Function (EAs) Rd, Rs (EAd) Moves data between two general registers or between a general register and memory, or moves immediate data to a general register. Cannot be used in this LSI. Cannot be used in this LSI. @SP+ Rn Pops a general register from the stack. POP.W Rn is identical to MOV.W @SP+, Rn. POP.L ERn is identical to MOV.L @SP+, ERn. Rn @-SP Pushes a general register onto the stack. PUSH.W Rn is identical to MOV.W Rn, @-SP. PUSH.L ERn is identical to MOV.L ERn, @-SP. @SP+ Rn (register list) Pops two or more general registers from the stack. Rn (register list) @-SP Pushes two or more general registers onto the stack.
MOVFPE MOVTPE POP
B B W/L
PUSH
W/L
LDM*2 STM*2 Notes: 1. B: W: L: 2.
L L
Refers to the operand size. Byte Word Longword Only register ER0 to ER6 should be used when using the STM/LDM instruction.
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Table 2.4
Instruction ADD SUB
Arithmetic Operations Instructions (1)
Size* B/W/L Function Rd Rs Rd, Rd #IMM Rd Performs addition or subtraction on data in two general registers, or on immediate data and data in a general register (immediate byte data cannot be subtracted from byte data in a general register. Use the SUBX or ADD instruction.) Rd Rs C Rd, Rd #IMM C Rd Performs addition or subtraction with carry on byte data in two general registers, or on immediate data and data in a general register. Rd 1 Rd, Rd 2 Rd Increments or decrements a general register by 1 or 2. (Byte operands can be incremented or decremented by 1 only.) Rd 1 Rd, Rd 2 Rd, Rd 4 Rd Adds or subtracts the value 1, 2, or 4 to or from data in a 32-bit register. Rd decimal adjust Rd Decimal-adjusts an addition or subtraction result in a general register by referring to the CCR to produce 4-bit BCD data. Rd x Rs Rd Performs unsigned multiplication on data in two general registers: either 8 bits x 8 bits 16 bits or 16 bits x 16 bits 32 bits. Rd x Rs Rd Performs signed multiplication on data in two general registers: either 8 bits x 8 bits 16 bits or 16 bits x 16 bits 32 bits. Rd / Rs Rd Performs unsigned division on data in two general registers: either 16 bits / 8 bits 8-bit quotient and 8-bit remainder or 32 bits / 16 bits 16-bit quotient and 16-bit remainder.
ADDX SUBX INC DEC ADDS SUBS DAA DAS MULXU
B
B/W/L
L B
B/W
MULXS
B/W
DIVXU
B/W
Note:
* B: W: L:
Refers to the operand size. Byte Word Longword
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Table 2.4
Instruction DIVXS
Arithmetic Operations Instructions (2)
Size*1 B/W Function Rd / Rs Rd Performs signed division on data in two general registers: either 16 bits / 8 bits 8-bit quotient and 8-bit remainder or 32 bits / 16 bits 16bit quotient and 16-bit remainder. Rd - Rs, Rd - #IMM Compares data in a general register with data in another general register or with immediate data, and sets CCR bits according to the result. 0 - Rd Rd Takes the two's complement (arithmetic complement) of data in a general register. Rd (zero extension) Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by padding with zeros on the left. Rd (sign extension) Rd Extends the lower 8 bits of a 16-bit register to word size, or the lower 16 bits of a 32-bit register to longword size, by extending the sign bit. @ERd - 0, 1 ( of @ERd) Tests memory contents, and sets the most significant bit (bit 7) to 1.
CMP
B/W/L
NEG
B/W/L
EXTU
W/L
EXTS
W/L
TAS*2 Notes: 1. B: W: L: 2.
B
Refers to the operand size. Byte Word Longword Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction.
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Table 2.5
Instruction AND
Logic Operations Instructions
Size* B/W/L Function Rd Rs Rd, Rd #IMM Rd Performs a logical AND operation on a general register and another general register or immediate data. Rd Rs Rd, Rd #IMM Rd Performs a logical OR operation on a general register and another general register or immediate data. Rd Rs Rd, Rd #IMM Rd Performs a logical exclusive OR operation on a general register and another general register or immediate data. Rd Rd Takes the one's complement of general register contents.
OR
B/W/L
XOR
B/W/L
NOT Note: * B: W: L:
B/W/L
Refers to the operand size. Byte Word Longword
Table 2.6
Instruction SHAL SHAR SHLL SHLR ROTL ROTR ROTXL ROTXR Note: * B: W: L:
Shift Instructions
Size* B/W/L Function Rd (shift) Rd Performs an arithmetic shift on general register contents. 1-bit or 2-bit shifts are possible. Rd (shift) Rd Performs a logical shift on general register contents. 1-bit or 2-bit shifts are possible. Rd (rotate) Rd Rotates general register contents. 1-bit or 2-bit rotations are possible. Rd (rotate) Rd Rotates general register contents through the carry flag. 1-bit or 2-bit rotations are possible.
B/W/L
B/W/L
B/W/L
Refers to the operand size. Byte Word Longword
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Table 2.7
Instruction BSET
Bit Manipulation Instructions (1)
Size* B Function 1 ( of ) Sets a specified bit in a general register or memory operand to 1. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. 0 ( of ) Clears a specified bit in a general register or memory operand to 0. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. ( of ) ( of ) Inverts a specified bit in a general register or memory operand. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. ( of ) Z Tests a specified bit in a general register or memory operand and sets or clears the Z flag accordingly. The bit number is specified by 3-bit immediate data or the lower three bits of a general register. C ( of ) C ANDs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C ANDs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data. C ( of ) C ORs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C ORs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data.
BCLR
B
BNOT
B
BTST
B
BAND
B
BIAND
B
BOR
B
BIOR
B
Note:
* Refers to the operand size. B: Byte
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Table 2.7
Instruction BXOR
Bit Manipulation Instructions (2)
Size* B Function C ( of ) C XORs the carry flag with a specified bit in a general register or memory operand and stores the result in the carry flag. C ( of ) C XORs the carry flag with the inverse of a specified bit in a general register or memory operand and stores the result in the carry flag. The bit number is specified by 3-bit immediate data. ( of ) C Transfers a specified bit in a general register or memory operand to the carry flag. ( of ) C Transfers the inverse of a specified bit in a general register or memory operand to the carry flag. The bit number is specified by 3-bit immediate data. C ( of ) Transfers the carry flag value to a specified bit in a general register or memory operand. C ( of ) Transfers the inverse of the carry flag value to a specified bit in a general register or memory operand. The bit number is specified by 3-bit immediate data.
BIXOR
B
BLD
B
BILD
B
BST
B
BIST
B
Note:
* Refers to the operand size. B: Byte
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Table 2.8
Instruction Bcc
Branch Instructions
Size Function Branches to a specified address if a specified condition is true. The branching conditions are listed below. Mnemonic BRA(BT) BRN(BF) BHI BLS BCC(BHS) BCS(BLO) BNE BEQ BVC BVS BPL BMI BGE BLT BGT BLE Description Always (true) Never (false) High Low or same Carry clear (high or same) Carry set (low) Not equal Equal Overflow clear Overflow set Plus Minus Greater or equal Less than Greater than Less or equal Condition Always Never CZ=0 CZ=1 C=0 C=1 Z=0 Z=1 V=0 V=1 N=0 N=1 NV=0 NV=1 Z(N V) = 0 Z(N V) = 1
JMP BSR JSR RTS
Branches unconditionally to a specified address. Branches to a subroutine at a specified address. Branches to a subroutine at a specified address. Returns from a subroutine
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Table 2.9
Instruction TRAPA RTE SLEEP LDC
System Control Instructions
Size* B/W Function Starts trap-instruction exception handling. Returns from an exception-handling routine. Causes a transition to a power-down state. (EAs) CCR, (EAs) EXR Moves the source operand contents or immediate data to CCR or EXR. Although CCR and EXR are 8-bit registers, word-size transfers are performed between them and memory. The upper 8 bits are valid. CCR (EAd), EXR (EAd) Transfers CCR or EXR contents to a general register or memory. Although CCR and EXR are 8-bit registers, word-size transfers are performed between them and memory. The upper 8 bits are valid. CCR #IMM CCR, EXR #IMM EXR Logically ANDs the CCR or EXR contents with immediate data. CCR #IMM CCR, EXR #IMM EXR Logically ORs the CCR or EXR contents with immediate data. CCR #IMM CCR, EXR #IMM EXR Logically XORs the CCR or EXR contents with immediate data. PC + 2 PC Only increments the program counter.
STC
B/W
ANDC ORC XORC NOP Note:
B B B
* Refers to the operand size. B: Byte W: Word
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Table 2.10 Block Data Transfer Instructions
Instruction EEPMOV.B Size Function if R4L 0 then Repeat @ER5+ @ER6+ R4L-1 R4L Until R4L = 0 else next; if R4 0 then Repeat @ER5+ @ER6+ R4-1 R4 Until R4 = 0 else next; Transfers a data block. Starting from the address set in ER5, transfers data for the number of bytes set in R4L or R4 to the address location set in ER6. Execution of the next instruction begins as soon as the transfer is completed.
EEPMOV.W
2.6.2
Basic Instruction Formats
This LSI instructions consist of 2-byte (1-word) units. An instruction consists of an operation field (op field), a register field (r field), an effective address extension (EA field), and a condition field (cc). Figure 2.11 shows examples of instruction formats. * Operation Field Indicates the function of the instruction, the addressing mode, and the operation to be carried out on the operand. The operation field always includes the first four bits of the instruction. Some instructions have two operation fields. * Register Field Specifies a general register. Address registers are specified by 3 bits, and data registers by 3 bits or 4 bits. Some instructions have two register fields. Some have no register field. * Effective Address Extension 8, 16, or 32 bits specifying immediate data, an absolute address, or a displacement. * Condition Field Specifies the branching condition of Bcc instructions.
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(1) Operation field only op NOP, RTS, etc.
(2) Operation field and register fields op rn rm ADD.B Rn, Rm, etc.
(3) Operation field, register fields, and effective address extension op EA(disp) rn rm MOV.B @(d:16, Rn), Rm, etc.
(4) Operation field, effective address extension, and condition field op cc EA(disp) BRA d:16, etc.
Figure 2.11 Instruction Formats (Examples)
2.7
Addressing Modes and Effective Address Calculation
The H8S/2000 CPU supports the eight addressing modes listed in table 2.11. Each instruction uses a subset of these addressing modes. Arithmetic and logic instructions can use the register direct and immediate modes. Data transfer instructions can use all addressing modes except programcounter relative and memory indirect. Bit manipulation instructions use register direct, register indirect, or the absolute addressing mode to specify an operand, and register direct (BSET, BCLR, BNOT, and BTST instructions) or immediate (3-bit) addressing mode to specify a bit number in the operand.
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Table 2.11 Addressing Modes
No. 1 2 3 4 5 6 7 8 Addressing Mode Register direct Register indirect Register indirect with displacement Register indirect with post-increment Register indirect with pre-decrement Absolute address Immediate Program-counter relative Memory indirect Symbol Rn @ERn @(d:16,ERn)/@(d:32,ERn) @ERn+ @-ERn @aa:8/@aa:16/@aa:24/@aa:32 #xx:8/#xx:16/#xx:32 @(d:8,PC)/@(d:16,PC) @@aa:8
2.7.1
Register DirectRn
The register field of the instruction specifies an 8-, 16-, or 32-bit general register containing the operand. R0H to R7H and R0L to R7L can be specified as 8-bit registers. R0 to R7 and E0 to E7 can be specified as 16-bit registers. ER0 to ER7 can be specified as 32-bit registers. 2.7.2 Register Indirect@ERn
The register field of the instruction code specifies an address register (ERn) which contains the address of the operand on memory. If the address is a program instruction address, the lower 24 bits are valid and the upper 8 bits are all assumed to be 0 (H'00). 2.7.3 Register Indirect with Displacement@(d:16, ERn) or @(d:32, ERn)
A 16-bit or 32-bit displacement contained in the instruction is added to an address register (ERn) specified by the register field of the instruction, and the sum gives the address of a memory operand. A 16-bit displacement is sign-extended when added. 2.7.4 Register Indirect with Post-Increment or Pre-Decrement@ERn+ or @-ERn
Register indirect with post-increment@ERn+: The register field of the instruction code specifies an address register (ERn) which contains the address of a memory operand. After the operand is accessed, 1, 2, or 4 is added to the address register contents and the sum is stored in the address register. The value added is 1 for byte access, 2 for word transfer instruction, or 4 for
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longword transfer instruction. For the word or longword transfer instructions, the register value should be even. Register indirect with pre-decrement@-ERn: The value 1, 2, or 4 is subtracted from an address register (ERn) specified by the register field in the instruction code, and the result is the address of a memory operand. The result is also stored in the address register. The value subtracted is 1 for byte access, 2 for word transfer instruction, or 4 for longword transfer instruction. For the word or longword transfer instructions, the register value should be even. 2.7.5 Absolute Address@aa:8, @aa:16, @aa:24, or @aa:32
The instruction code contains the absolute address of a memory operand. The absolute address may be 8 bits long (@aa:8), 16 bits long (@aa:16), 24 bits long (@aa:24), or 32 bits long (@aa:32). Table 2.12 indicates the accessible absolute address ranges. To access data, the absolute address should be 8 bits (@aa:8), 16 bits (@aa:16), or 32 bits (@aa:32) long. For an 8-bit absolute address, the upper 24 bits are all assumed to be 1 (H'FFFF). For a 16-bit absolute address the upper 16 bits are a sign extension. A 32-bit absolute address can access the entire address space. A 24-bit absolute address (@aa:24) indicates the address of a program instruction. The upper 8 bits are all assumed to be 0 (H'00). Table 2.12 Absolute Address Access Ranges
Absolute Address Data address 8 bits (@aa:8) 16 bits (@aa:16) 32 bits (@aa:32) Program instruction address Note: * 24 bits (@aa:24) Normal Mode* H'FF00 to H'FFFF H'0000 to H'FFFF Advanced Mode H'FFFF00 to H'FFFFFF H'000000 to H'007FFF, H'FF8000 to H'FFFFFF H'000000 to H'FFFFFF
Normal mode is not available in this LSI.
2.7.6
Immediate#xx:8, #xx:16, or #xx:32
The instruction contains 8-bit (#xx:8), 16-bit (#xx:16), or 32-bit (#xx:32) immediate data as an operand.
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The ADDS, SUBS, INC and DEC instructions contain immediate data implicitly. Some bit manipulation instructions contain 3-bit immediate data in the instruction code, specifying a bit number. The TRAPA instruction contains 2-bit immediate data in its instruction code, specifying a vector address. 2.7.7 Program-Counter Relative@(d:8, PC) or @(d:16, PC)
This mode is used in the Bcc and BSR instructions. An 8-bit or 16-bit displacement contained in the instruction is sign-extended and added to the 24-bit PC contents to generate a branch address. Only the lower 24 bits of this branch address are valid; the upper 8 bits are all assumed to be 0 (H'00). The PC value to which the displacement is added is the address of the first byte of the next instruction, so the possible branching range is -126 to +128 bytes (-63 to +64 words) or -32766 to +32768 bytes (-16383 to +16384 words) from the branch instruction. The resulting value should be an even number. 2.7.8 Memory Indirect@@aa:8
This mode can be used by the JMP and JSR instructions. The instruction code contains an 8-bit absolute address specifying a memory operand. This memory operand contains a branch address. The upper bits of the absolute address are all assumed to be 0, so the address range is 0 to 255 (H'0000 to H'00FF in normal mode*, H'000000 to H'0000FF in advanced mode). In normal mode, the memory operand is a word operand and the branch address is 16 bits long. In advanced mode, the memory operand is a longword operand, the first byte of which is assumed to be 0 (H'00). Note that the first part of the address range is also the exception vector area. For further details, see section 4, Exception Handling. If an odd address is specified in word or longword memory access, or as a branch address, the least significant bit is regarded as 0, causing data to be accessed or instruction code to be fetched at the address preceding the specified address. (For further information, see section 2.5.2, Memory Data Formats.) Note: * Normal mode is not available in this LSI.
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Specified by @aa:8
Branch address
Specified by @aa:8
Reserved Branch address
(a) Normal Mode*
Note: * Normal mode is not available in this LSI.
(a) Advanced Mode
Figure 2.12 Branch Address Specification in Memory Indirect Mode 2.7.9 Effective Address Calculation
Table 2.13 indicates how effective addresses are calculated in each addressing mode. In normal mode the upper 8 bits of the effective address are ignored in order to generate a 16-bit address.
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Table 2.13 Effective Address Calculation (1)
No 1
Addressing Mode and Instruction Format
Register direct(Rn)
Effective Address Calculation
Effective Address (EA)
Operand is general register contents.
op 2
rm
rn 31
General register contents
Register indirect(@ERn)
0
31
24 23
0
Don't care
op 3
r
Register indirect with displacement @(d:16,ERn) or @(d:32,ERn)
31
General register contents
0 31 24 23 0
op
r
disp 31
Sign extension
Don't care 0 disp
4
Register indirect with post-increment or pre-decrement *Register indirect with post-increment @ERn+
31
General register contents
0
31
24 23
0
Don't care
op
r 31
1, 2, or 4
*Register indirect with pre-decrement @-ERn
0
General register contents
31
24 23
0
Don't care op r
Operand Size Byte Word Longword 1, 2, or 4
Offset 1 2 4
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Table 2.13 Effective Address Calculation (2)
No 5
Addressing Mode and Instruction Format
Absolute address
Effective Address Calculation
Effective Address (EA)
@aa:8 op abs
31
24 23 H'FFFF
87
0
Don't care
@aa:16 op abs
31
24 23
16 15
0
Don't care Sign extension
@aa:24 op abs
31
24 23
0
Don't care
@aa:32 op abs 31 24 23 0
Don't care
6
Immediate
#xx:8/#xx:16/#xx:32 op IMM
Operand is immediate data.
7
Program-counter relative @(d:8,PC)/@(d:16,PC)
23
PC contents
0
op
disp
23
Sign extension
0 disp 31 24 23 0
Don't care
8
Memory indirect @@aa:8 * Normal mode*
31 op abs H'000000 15
87 abs
0
0
Memory contents
31
24 23
16 15 H'00
0
Don't care
* Advanced mode
31 op abs 31
Memory contents
87 H'000000 abs
0 31 24 23 Don't care 0
0
Note: * Normal mode is not available in this LSI.
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Section 2 CPU
2.8
Processing States
The H8S/2000 CPU has five main processing states: the reset state, exception handling state, program execution state, bus-released state, and power-down state. Figure 2.13 indicates the state transitions. * Reset State In this state, the CPU and all on-chip peripheral modules are initialized and not operating. When the RES input goes low, all current processing stops and the CPU enters the reset state. All interrupts are masked in the reset state. Reset exception handling starts when the RES signal changes from low to high. For details, see section 4, Exception Handling. The reset state can also be entered by a watchdog timer overflow. * Exception-Handling State The exception-handling state is a transient state that occurs when the CPU alters the normal processing flow due to an exception source, such as a reset, trace, interrupt, or trap instruction. The CPU fetches a start address (vector) from the exception vector table and branches to that address. For further details, see section 4, Exception Handling. * Program Execution State In this state, the CPU executes program instructions in sequence. * Bus-Released State In a product which has a bus master other than the CPU, such as a data transfer controller (DTC), the bus-released state occurs when the bus has been released in response to a bus request from a bus master other than the CPU. While the bus is released, the CPU halts operations. * Power-down State This is a power-down state in which the CPU stops operating. The program stop state occurs when a SLEEP instruction is executed or the CPU enters hardware standby mode. For further details, see section 22, Power-Down Modes.
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Section 2 CPU
End of bus request Bus request
s bu of t st d ues ue En req eq r s Bu
Program execution state
xc ep
Bus-released state
tio n
ha
nd
lin
SLEEP instruction, SSBY = 0
g
Sleep mode
est equ
SLEEP instruction, SSBY = 1
o ha f ex nd ce lin pti g on Re qu es tf or e
pt r rru Inte
En d
Exception handling state
External interrupt request
Software standby mode
MRES = high
RES = high STBY = high, RES = low
Manual reset state
*1
Power-on reset state
*1
Hardware standby mode*2 Power-down state*3
Reset state
Notes: 1. From any state except hardware standby mode, a transition to the reset state occurs whenever RES goes low. A transition can also be made to the reset state when the watchdog timer overflows. 2. From any state, a transition to hardware standby mode occurs when STBY goes low. 3. Apart from these states, there is also watch mode. For details, see section 22, Power-Down Modes.
Figure 2.13 State Transitions
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Section 2 CPU
2.9
2.9.1
Usage Notes
TAS Instruction
Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction. The TAS instruction is not generated by the H8S and H8/300 Series C/C++ compilers. If the TAS instruction is used as a user-defined intrinsic function, ensure that only register ER0, ER1, ER4, or ER5 is used. 2.9.2 STM/LDM Instruction
With the STM or LDM instruction, the ER7 register is used as the stack pointer, and thus cannot be used as a register that allows save (STM) or restore (LDM) operation. With a single STM or LDM instruction, two to four registers can be saved or restored. The available registers are as follows: For two registers: ER0 and ER1, ER2 and ER3, or ER4 and ER5 For three registers: ER0 to ER2, or ER4 to ER6 For four registers: ER0 to ER3 For the H8S or H8/300 Series C/C++ Compiler, the STM/LDM instruction including ER7 is not created. 2.9.3 Bit Manipulation Instructions
When bit-manipulation is used with registers that include write-only bits, bits to be manipulated may not be manipulated properly or bits unrelated to the bit-manipulation may be changed. Some values read from write-only bits are fixed and some are undefined. When such bits are the operands of bit-manipulation instructions that use read values in arithmetic operations (BNOT, BTST, BAND, BIAND, BOR, BIOR, BXOR, BIXOR, BLD, BILD), the desired bit-manipulation will not be executed. Also, bit-manipulation instructions that write back data according to the results of arithmetic operations (BSET, BCLR, BNOT, BST, BIST) may change bits that are not related to the bitmanipulation. Therefore, special care is necessary when using these instructions with registers that include write-only bits.
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Section 2 CPU
The BSET, BCLR, BNOT, BST and BIST instructions are executed as follows: 1. Data is read in bytes. 2. The operation corresponding to the instruction is applied to the specified bit of the data. 3. The byte produced by the bit-manipulation is written back. * Consider this example, where the BCLR instruction is executed to clear only bit 4 in P1DDR of Port 1. P1DDR is an 8-bit register that consists of write-only bits and specifies input or output for each pin of port 1. Reading of these bits is not valid, since values read are specified as undefined. In the following example, the BCLR instruction specifies P14 as an input. Before the operation, P17 to P14 are set as output pins and P13 to P10 are set as input pins. The value of P1DDR is H'F0.
P17 I/O P1DDR Output 1 P16 Output 1 P15 Output 1 P14 Output 1 P13 Input 0 P12 Input 0 P11 Input 0 P10 Input 0
To switch P14 from an output to an input, the value of bit 4 in P1DDR has to be changed from 1 to 0 (from H'F0 to H'E0). The BCLR instruction used to clear bit 4 in P1DDR is as follows. BCLR #4, @P1DDR However, the above bit-manipulation of the write-only P1DDR register may cause the following problem. The data in P1DDR is read in bytes. Data read from P1DDR is undefined. Thus, regardless of whether the value in the register is 0 or 1, it is impossible to tell which value will be read. All bits in P1DDR are write-only, thus read as undefined. The actual value in P1DDR is H'F0. Let us assume that the value read is H'F8, where the value of bit 3 is read as 1 rather than its actual value of 0.
P17 I/O P1DDR Read value Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 1 P13 Input 0 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
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Section 2 CPU
The target bit of the data read out is then manipulated. In this example, clearing bit 4 of H'F8 leaves us with H'E8.
P17 I/O P1DDR After bitmanipulation Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Output 1 0 P13 Input 0 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
After the bit-manipulation, The data is then written back to P1DDR, and execution of the BCLR instruction is complete.
P17 I/O P1DDR Write value Output 1 1 P16 Output 1 1 P15 Output 1 1 P14 Input 0 0 P13 Output 1 1 P12 Input 0 0 P11 Input 0 0 P10 Input 0 0
This instruction was meant to change the value of P1DDR to H'E0, but H'E8 was written back instead. P13, which should be an input pin, has been turned into an output pin. Note that while the error in this case occurred because bit 3 in P1DDR was read as 1, the values read from bits 7 to 0 in P1DDR are undefined. Bit-manipulation instructions that write back values might change any bit from 0 to 1 or 1 to 0. Section 2.9.4, Access Method for Registers with WriteOnly Bits, describes a way to avoid this possibility when changing the values of registers that include write-only bits. The BCLR instruction can be used to clear flags in the internal I/O registers to 0. In this case, if it is obvious that a given flag has been set to 1 because an interrupt handler has been entered, there is no need to read the flag . 2.9.4 Access Method for Registers with Write-Only Bits
A read value from a write-only bit using a data-transfer or a bit-manipulation instruction is undefined. To avoid using the read value for subsequent operations, follow the procedure shown below to access registers that include write-only bits. When writing to registers that include write-only bits, set up a work area in memory such as onchip RAM, write the data to the work area, read the data back from the memory, and then write the data to the registers that include write-only bits.
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Section 2 CPU
Write initial data to work area Writing initial value
Copy data from work area to register including write-only bit
Access data in work area (data-transfer and bit-manipulation instructions can be used)
Changing value of register including write-only bit
Copy data from work area to register including write-only bit
Figure 2.14 Flowchart of Access Method for Registers with Write-Only Bits * Consider the following example, where only bit 4 in P1DDR of port 1 is cleared. P1DDR is an 8-bit register that consists of write-only bits and specifies input or output for each pin of port 1. Reading of these bits is not valid, since values read are specified as undefined. In the following example, the BCLR instruction specifies P14 as an input. Start by writing the initial value H'F0, which will be written to P1DDR, to the work area (RAM0) in memory. MOV.B #H'F0, R0L MOV.B R0L, @RAM0 MOV.B R0L, @P1DDR
P17 I/O P1DDR Output 1 P16 Output 1 P15 Output 1 P14 Output 1 P13 Input 0 P12 Input 0 P11 Input 0 P10 Input 0
RAM0
1
1
1
1
0
0
0
0
P14 is now an output. To switch P14 from an output to an input, the value of bit 4 in P1DDR has to be changed from 1 to 0 (from H'F0 to H'E0). Clear bit 4 of RAM0 using the BCLR instruction. BCLR #4, @RAM0
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Section 2 CPU
P17 I/O P1DDR Output 1
P16 Output 1
P15 Output 1
P14 Output 1
P13 Input 0
P12 Input 0
P11 Input 0
P10 Input 0
RAM0
1
1
1
0
0
0
0
0
RAM locations are readable and writable, so there is no possibility of a problem if a bitmanipulation instruction is used to clear only bit 4 of RAM0. Read the value from RAM0 and then write it back to P1DDR. MOV.B @RAM0, R0L MOV.B R0L, @P1DDR
P17 I/O P1DDR Output 1 P16 Output 1 P15 Output 1 P14 Input 0 P13 Input 0 P12 Input 0 P11 Input 0 P10 Input 0
RAM0
1
1
1
0
0
0
0
0
Following this procedure in access to registers that include write-only bits makes the behavior of the program independent of the type of instruction.
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Section 2 CPU
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Section 3 MCU Operating Modes
Section 3 MCU Operating Modes
3.1 Operating Mode Selection
This LSI supports two types of operating mode (modes 6 and 7). Pin functions are changed according to each operating mode. The operation mode is determined by the setting of mode pins (MD2 to MD0). Mode 6 is the external expansion mode, which allows external memory and peripheral device to be accessed. In external expansion mode, the bus controller sets address space of 8 bits or 16 bits for each area after the program is started to execute. Making one of the areas a 16-bit address space leads to 16-bit bus mode and making all the area 8-bit access space leads to 8-bit bus mode. In mode 7, the external address space cannot be used. Mode pins should not be changed during operations. Table 3.1 MCU Operating Mode Selection
External Data Bus On-Chip ROM Initial Width 8 bits Max. Width 16 bits
MCU CPU Operating Operating Mode MD2 MD1 MD0 Mode Description 6 7 1 1 1 1 0 1 Advanced mode Advanced mode
On-chip ROM valid Enabled expansion mode Single-chip mode Enabled
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Section 3 MCU Operating Modes
3.2
Register Descriptions
The following registers are related to the operating mode. * Mode control register (MDCR) * System control register (SYSCR) 3.2.1 Mode Control Register (MDCR)
MDCR monitors the current operating mode.
Bit 7 6 to 3 2 1 0 Bit Name MDS2 MDS1 MDS0 Initial Value 1 All 0 * * * R/W R R R Descriptions Reserved This bit is always read as 1 and cannot be modified. Reserved These bits are always read as 0 and cannot be modified. Mode Select 2 to 0 These bits indicate the input levels at mode pins MD2 to MD0 (the current operating mode). Bits MDS2 to MDS0 correspond to pins MD2 to MD0, respectively. MDS2 to MDS0 are read-only bits and cannot be modified. The input levels at mode pins MD2 to MD0 are latched into these bits when MDCR is read. These latches are canceled by a power-on reset, but retained by a manual reset.
Note:
*
Determined by the setting of pins MD2 to MD0.
3.2.2
System Control Register (SYSCR)
SYSCR performs the selection of interrupt control mode, the selection of NMI detection edge, the selection of enable/disable of MRES pin input, and the selection of valid/invalid of on-chip RAM.
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Section 3 MCU Operating Modes
Bit 7 6 5 4
Bit Name INTM1 INTM0
Initial Value 0 0 0 0
R/W R/W R/W R/W
Descriptions Reserved The write value should always be 0. Reserved This bit is always read as 0 and cannot be modified. Select interrupt control mode of the interrupt controller. For interrupt control mode, see section 5.5.1, Interrupt Control Modes and Interrupt Operation. 00: Interrupt control mode 0 01: Setting prohibited 10: Interrupt control mode 2 11: Setting prohibited
3
NMIEG
0
R/W
NMI Edge Select Performs input edge selection of the NMI pin. 0: Interrupt request is generated at the falling edge of NMI input. 1: Interrupt request is generated at the rising edge of NMI input.
2
MRESE
0
R/W
Manual Reset Selection Bit Selects enable/disable of the MRES pin input. 0: Disables manual reset. 1: Enables manual reset. The MRES pin input is enabled.
1 0
RAME
0 1
R/W
Reserved This bit is always read as 0 and cannot be modified. RAM Enable Selects valid/invalid of the on-chip RAM. The RAME bit is initialized when a reset is canceled. 0: The on-chip RAM is disabled. 1: The on-chip RAM is enabled.
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Section 3 MCU Operating Modes
3.3
3.3.1
Operating Mode
Mode 6
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is valid. Immediately after a reset, ports A, B, and C become input ports. The AE3 to AEO bits in PFCR allow enable/disable setting of the address (A23 to A8) output, regardless of the corresponding DDR value. The pin which is disabled of the address output at ports A and B becomes an output port when the corresponding DDR is set to 1. The address (A7 to A0) is output when the corresponding DDR is set to 1 at port C. Ports D and E are data buses, and a part of the port F is the bus control signal. Immediately after a reset, 8-bits bus mode is set and all the areas become 8-bit access space. However, when any of the areas is set to 16-bit access space by the bus controller, 16-bit bus mode is set and port E becomes the data bus. 3.3.2 Mode 7
The CPU can access a 16-Mbyte address space in advanced mode. The on-chip ROM is valid and the external address space cannot be accessed. All the I/O port can be used as an input/output port. 3.3.3 Pin Functions
Table 3.2 shows the pin functions in modes 6 and 7.
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Section 3 MCU Operating Modes
Table 3.2
Port Port A Port B Port C Port D Port E Port F
Pin Function in Each Operating Mode
Mode 6 P*/A P*/A P*/A D P*/D PF7 PF6 to PF4 PF3 PF2 to PF0 P/C* C P*/C P*/C Mode 7 P P P P P P*/C P
Legend: P: Input/output port A: Address bus output D: Data bus Input/output C: Control signal, clock Input/output : Immediately after a reset
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Section 3 MCU Operating Modes
3.4
Address Map in Each Operating Mode
Figures 3.1 to 3.3 show the address map of each product.
Mode 6 (Advanced and expanded mode with on-chip ROM enabled) H'000000 H'000000 Mode 7 (Advanced and Singlechip mode)
On-chip ROM
On-chip ROM
H'07FFFF H'080000
External address space
H'FF7000
On-chip RAM
H'FF7000 H'FFEFBF
On-chip RAM
H'FFEFC0 External address space H'FFF800 H'FFFF40 Internal I/O registers Reserved area H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM H'FFF800 Internal I/O registers H'FFFF3F
H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM
Figure 3.1 Address Map of H8S/2556, H8S/2552, and H8S/2506
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Section 3 MCU Operating Modes
Mode 6 (Advanced and expanded mode with on-chip ROM enabled) H'000000 H'000000
Mode 7 (Advanced and Singlechip mode)
On-chip ROM
On-chip ROM
H'05FFFF H'060000 H'080000 Reserved area
External address space
H'FF7000 Reserved area H'FF9000 On-chip RAM H'FF9000 H'FFEFBF On-chip RAM
H'FFEFC0 External address space H'FFF800 H'FFFF40 Internal I/O registers Reserved area H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM H'FFF800 Internal I/O registers H'FFFF3F
H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM
Figure 3.2 Address Map of H8S/2551
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Section 3 MCU Operating Modes
Mode 6 (Advanced and expanded mode with on-chip ROM enabled) H'000000 H'000000
Mode 7 (Advanced and Singlechip mode)
On-chip ROM
On-chip ROM
H'05FFFF H'060000 H'080000 Reserved area
External address space
H'FF7000 On-chip RAM
H'FF7000 On-chip RAM H'FFEFBF
H'FFEFC0 External address space H'FFF800 Internal I/O registers H'FFFF40 Reserved area H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM H'FFF800 Internal I/O registers H'FFFF3F
H'FFFF60 Internal I/O registers H'FFFFC0 H'FFFFFF On-chip RAM
Figure 3.3 Address Map of H8S/2505
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Section 4 Exception Handling
Section 4 Exception Handling
4.1 Exception Handling Types and Priority
As table 4.1 indicates, exception handling may be caused by a reset, trace, trap instruction, or interrupt. Exception handling is prioritized as shown in table 4.1. If two or more exceptions occur simultaneously, they are accepted and processed in order of priority. Trap instruction exception handling requests are accepted at all times in program execution state. The exception source, the stack structure, and the operation of the CPU vary depending on the interrupt control mode set by the INTM0 and INTM1 bits in SYSCR. Table 4.1
Priority High
Exception Types and Priority
Exception Type Reset Start of Exception Handling Starts immediately after a low-to-high transition at the RES and MRES pins, or when the watchdog timer overflows. The CPU enters the power-on reset state when the RES pin is low. The CPU enters the manual reset state when the MRES pin is low. Starts when execution of the current instruction or exception handling ends, if the trace (T) bit is set to 1. Trace is enabled only in interrupt control mode 2. Trace exception handling is not executed after execution of an RTE instruction. Starts when execution of the current instruction or exception handling ends, if an interrupt request has been issued. Interrupt detection is not performed on completion of ANDC, ORC, XORC, or LDC instruction execution, or on completion of reset exception handling. Started by execution of a trap instruction (TRAPA). Trap instruction exception handling requests are accepted at all times in program execution state.
Trace
Interrupt
Low
Trap instruction (TRAPA)
4.2
Exception Sources and Exception Vector Table
Different vector address is assigned to each exception source. Table 4.2 lists the exception sources and their vector addresses.
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Section 4 Exception Handling
Table 4.2
Exception Handling Vector Table
Vector Address*1
Exception Source Power-on reset Manual reset Reserved for system use
Vector Number 0 1 2 3 4
Advanced Mode H'0000 to H'0003 H'0004 to H'0007 H'0008 to H'000B H'000C to H'000F H'0010 to H'0013 H'0014 to H'0017 H'0018 to H'001B H'001C to H'001F H'0020 to H'0023 H'0024 to H'0027 H'0028 to H'002B H'002C to H'002F H'0030 to H'0033 H'0034 to H'0037 H'0038 to H'003B H'003C to H'003F H'0040 to H'0043 H'0044 to H'0047 H'0048 to H'004B H'004C to H'004F H'0050 to H'0053 H'0054 to H'0057 H'0058 to H'005B H'005C to H'005F H'0060 to H'0063 H'01FC to H'01FF
Trace Direct transitions*
3
5 6 7 8 9 10 11
External interrupt (NMI) Trap instruction (four sources)
Reserved for system use
12 13 14 15
External interrupt
IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7
16 17 18 19 20 21 22 23 24 127
Internal interrupt*2
Notes: 1. Indicates lower 16 bits of the address. 2. For details on the internal interrupt vector table, see section 5.4.3, Interrupt Exception Handling Vector Table. 3. Direct transitions are not supported in this LSI.
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Section 4 Exception Handling
4.3
Reset
A reset has the highest exception priority. When the RES or MRES pin goes low, all processing halts and this LSI enters the reset state. A reset initializes the internal state of the CPU and the registers of the on-chip peripheral modules. This LSI enters interrupt control mode 0 immediately after a reset. When the RES or MRES pin goes high from the low state, this LSI starts reset exception handling. The chip can also be reset by overflow of the watchdog timer. For details, see section 12, Watchdog Timer (WDT). 4.3.1 Types of Reset
The LSI supports two types of resets: power-on reset and manual reset. Table 4.3 shows the types of reset. Set to power-on reset when the power is tuned on. The CPU internal status is initialized both by the power-on reset and the manual reset. By a power-on reset, all registers of the on-chip peripheral modules are initialized; by a manual reset, registers of the on-chip peripheral modules, except for the bus controller and I/O ports, are initialized. The status of the bus controller and I/O ports is maintained. By a manual reset, on-chip peripheral modules are initialized and thus ports used as input/output pins of the on-chip peripheral modules are switched to input/output ports controlled by DDR and DR. Table 4.3 Types of Reset
Reset Shift Conditions Types Power-on reset Manual reset Legend: *: Don't care MRES * Low RES Low High Internal State CPU Initialized Initialized On-Chip Peripheral Modules Initialized Initialized except for bus controller and I/O ports
The power-on reset and the manual reset are also available for the reset by the watchdog timer. To enable the MRES pin, set the MRESE bit in SYSCR to 1.
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Section 4 Exception Handling
4.3.2
Reset Exception Handling
When the RES or MRES pin goes low, this LSI enters the reset state. To ensure that this LSI is reset, hold the RES pin low for at least 20 ms at power-up. To reset the chip during operation, hold the RES or MRES pin low for at least 20 states. When the RES or MRES pin goes high after being held low for the necessary time, this LSI starts reset exception handling as follows: 1. The internal state of the CPU and the registers of the on-chip peripheral modules are initialized, the T bit in EXR is cleared to 0, and the I bits in EXR and CCR are set to 1. 2. The reset exception handling vector address is read and transferred to the PC, and program execution starts from the address indicated by the PC. Figures 4.1 shows an example of the reset sequence.
Fetch first instruction Internal processing of a program
Vector fetch
RES
Internal address bus
(1)
(3)
(5)
Internal read signal
Internal write signal Internal data bus
High
(2)
(4)
(6)
(1)(3) (2)(4) (5) (6)
Reset exception handling vector address (At a reset, (1) = H'000000; (3) = H'000002) Start address (contents of reset exception handling vector address) Start address ((5) = (2) (4)) First instruction of a program
Figure 4.1 Reset Sequence (Advanced Mode with On-Chip ROM Enabled)
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Section 4 Exception Handling
4.3.3
Interrupts after Reset
If an interrupt is accepted after a reset and before the stack pointer (SP) is initialized, the PC and CCR will not be saved correctly, leading to a program crash. To prevent this, all interrupt requests, including NMI, are disabled immediately after a reset. Since the first instruction of a program is always executed immediately after the reset state ends, make sure that this instruction initializes the stack pointer (example: MOV.L #xx: 32, SP). 4.3.4 State of On-Chip Peripheral Modules after Reset Release
After reset release, MSTPCRA is initialized to H'3F, MSTPCRB and MSTPCRC are initialized to H'FF, and all modules except the DTC enter module stop mode. Consequently, on-chip peripheral module registers cannot be read or written to. Register reading and writing is enabled when the module stop mode is exited.
4.4
Trace Exception Handling
Trace is enabled in interrupt control mode 2. Trace mode is not entered in interrupt control mode 0, irrespective of the state of the T bit. For details on the interrupt control mode, see section 5, Interrupt Controller. If the T bit in EXR is set to 1, trace mode is entered. In trace mode, a trace exception handling occurs on completion of each instruction. After execution of trace exception handling, the T bit in EXR is cleared to 0 and trace mode is canceled. Trace mode is not affected by interrupt masking. Table 4.4 shows the state of CCR and EXR after execution of trace exception handling. Interrupts are accepted even within the trace exception handling routine. The T bit saved on the stack retains its value of 1, and when control is returned from the trace exception handling routine by the RTE instruction, trace mode resumes. Trace exception handling is not carried out after execution of the RTE instruction.
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Section 4 Exception Handling
Table 4.4
State of CCR and EXR after Trace Exception Handling
CCR EXR I2 to I0 T
Interrupt Control Mode 0 2
I
UI
Trace exception handling cannot be used. 1 0
Legend: 1: Set to 1 0: Cleared to 0 : Retains value prior to execution
4.5
Interrupt Exception Handling
Interrupts are controlled by the interrupt controller. The interrupt controller has two interrupt control modes and can assign interrupts other than NMI to eight priority/mask levels to enable multiplexed interrupt control. For details, see section 5, Interrupt Controller. Interrupt exception handling is conducted as follows: 1. 2. 3. The values in the program counter (PC), condition code register (CCR), and extended register (EXR) are saved to the stack. The interrupt mask bit is updated and the T bit is cleared to 0. A vector address corresponding to the interrupt source is generated, the start address is loaded from the vector table to the PC, and program execution begins from that address.
4.6
Trap Instruction Exception Handling
Trap instruction exception handling starts when a TRAPA instruction is executed. Trap instruction exception handling can be executed at all times in the program execution state. Trap instruction exception handling is conducted as follows: 1. 2. 3. The values in the program counter (PC), condition code register (CCR), and extended register (EXR) are saved to the stack. The interrupt mask bit is updated and the T bit is cleared to 0. A vector address corresponding to the interrupt source is generated, the start address is loaded from the vector table to the PC, and program execution starts from that address.
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Section 4 Exception Handling
The TRAPA instruction fetches a start address from a vector table entry corresponding to a vector number from 0 to 3, as specified in the instruction code. Table 4.5 shows the state of CCR and EXR after execution of trap instruction exception handling. Table 4.5 State of CCR and EXR after Trap Instruction Exception Handling
CCR Interrupt Control Mode 0 2 I 1 1 UI I2 to I0 EXR T 0
Legend: 1: Set to 1 0: Cleared to 0 : Retains value prior to execution
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Section 4 Exception Handling
4.7
Stack State after Exception Handling
Figures 4.2 shows the stack state after completion of trap instruction exception handling and interrupt exception handling.
SP CCR PC (24 bits)
EXR Reserved*
SP
CCR PC (24 bits)
(a) Interrupt control mode 0
(b) Interrupt control mode 2
Note:* Ignored on return.
Figure 4.2 Stack State after Exception Handling (Advanced Mode)
4.8
Usage Note
When accessing word data or longword data, this LSI assumes that the lowest address bit is 0. The stack should always be accessed by word transfer instruction or longword transfer instruction, and the value of the stack pointer (SP: ER7) should always be kept even. Use the following instructions to save registers:
PUSH.W PUSH.L Rn ERn (or MOV.W Rn, @-SP) (or MOV.L ERn, @-SP)
Use the following instructions to restore registers:
POP.W POP.L Rn ERn (or MOV.W @SP+, Rn) (or MOV.L @SP+, ERn)
Setting the SP to an odd value may lead to a malfunction. Figure 4.3 shows an example of what happens when the SP value is odd.
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Section 4 Exception Handling
CCR SP PC
SP
R1L PC
H'FFFEFA H'FFFEFB H'FFFEFC H'FFFEFD
SP
H'FFFEFF
TRAPA instruction executed SP set to H'FFFEFF Legend: CCR: Condition code register PC: Program counter R1L: General register R1L SP: Stack pointer
MOV.B R1L, @-ER7 executed Contents of CCR lost
Data saved above SP
Note: This diagram illustrates an example in interrupt control mode 0 and advanced mode.
Figure 4.3 Operation when SP Value Is Odd
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Section 4 Exception Handling
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Section 5 Interrupt Controller
Section 5 Interrupt Controller
5.1 Features
This LSI controls interrupts with the interrupt controller. The interrupt controller has the following features: * Two interrupt control modes Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in the system control register (SYSCR). * Priorities settable with IPR An interrupt priority register (IPR) is provided for setting interrupt priorities. Eight priority levels can be set for each module for all interrupts except NMI. NMI is assigned the highest priority level of 8, and can be accepted at all times. * Independent vector addresses All interrupt sources are assigned independent vector addresses, making it unnecessary for the source to be identified in the interrupt handling routine. * Nine external interrupt pins NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling edge can be selected for NMI. Falling edge, rising edge, both edges, or level sensing can be independently selected for IRQ7 to IRQ0. * DTC control The DTC can be activated by an interrupt request.
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Section 5 Interrupt Controller
A block diagram of the interrupt controller is shown in figure 5.1.
INTM1, INTM0 SYSCR NMIEG NMI input IRQ input NMI input unit IRQ input unit ISR ISCR IER Priority determination I Internal interrupt source SWDTEND to TEI4 Interrupt request Vector number
CPU
CCR I2 to I0 EXR
IPR Interrupt controller Legend: ISCR: IRQ sense control register IRQ enable register IER: IRQ status register ISR: Interrupt priority register IPR: SYSCR: System control register
Figure 5.1 Block Diagram of Interrupt Controller
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Section 5 Interrupt Controller
5.2
Input/Output Pins
Table 5.1 summarizes the pins of the interrupt controller. Table 5.1
Name NMI IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 IRQ2 IRQ1 IRQ0
Pin Configuration
I/O Input Input Input Input Input Input Input Input Input Function Nonmaskable external interrupt Rising edge or falling edge can be selected. Maskable external interrupt Rising edge, falling edge, both edges, or level sensing can be selected.
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Section 5 Interrupt Controller
5.3
Register Descriptions
The interrupt controller has the following registers. For details on the system control register, see section 3.2.2, System Control Register (SYSCR). * * * * * * * * * * * * * * * * * * * System control register (SYSCR) IRQ sense control register H (ISCRH) IRQ sense control register L (ISCRL) IRQ enable register (IER) IRQ status register (ISR) Interrupt priority register A (IPRA) Interrupt priority register B (IPRB) Interrupt priority register C (IPRC) Interrupt priority register D (IPRD) Interrupt priority register E (IPRE) Interrupt priority register F (IPRF) Interrupt priority register G (IPRG) Interrupt priority register H (IPRH) Interrupt priority register I (IPRI) Interrupt priority register J (IPRJ) Interrupt priority register K (IPRK) Interrupt priority register L (IPRL) Interrupt priority register M (IPRM) Interrupt priority register O (IPRO)
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Section 5 Interrupt Controller
5.3.1
Interrupt Priority Registers A to M, and O (IPRA to IPRM, IPRO)
The IPR registers are fourteen 8-bit readable/writable registers that set priorities (levels 7 to 0) for interrupts other than NMI. The correspondence between interrupt sources and IPR settings is shown in section 5.4.3, Interrupt Exception Handling Vector Table. Setting a value in the range from H'0 to H'7 in the 3-bit groups of bits 6 to 4 and 2 to 0 sets the priority of the corresponding interrupt.
Bit 7 6 5 4 Bit Name IPR6 IPR5 IPR4 Initial Value 0 1 1 1 R/W R/W R/W R/W Description Reserved This bit is always read as 0 and cannot be modified. These bits set the priority of the corresponding interrupt source. 000: Priority level 0 (lowest) 001: Priority level 1 010: Priority level 2 011: Priority level 3 100: Priority level 4 101: Priority level 5 110: Priority level 6 111: Priority level 7 (highest) 3 2 1 0 IPR2 IPR1 IPR0 0 1 1 1 R/W R/W R/W Reserved This bit is always read as 0 and cannot be modified. These bits set the priority of the corresponding interrupt source. 000: Priority level 0 (lowest) 001: Priority level 1 010: Priority level 2 011: Priority level 3 100: Priority level 4 101: Priority level 5 110: Priority level 6 111: Priority level 7 (highest)
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Section 5 Interrupt Controller
5.3.2
IRQ Enable Register (IER)
IER controls the enabling and disabling of interrupt requests IRQ7 to IRQ0.
Bit 7 6 5 4 3 2 1 0 Bit Name IRQ7E IRQ6E IRQ5E IRQ4E IRQ3E IRQ2E IRQ1E IRQ0E Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description IRQ7 Enable The IRQ7 interrupt request is enabled when this bit is 1. IRQ6 Enable The IRQ6 interrupt request is enabled when this bit is 1. IRQ5 Enable The IRQ5 interrupt request is enabled when this bit is 1. IRQ4 Enable The IRQ4 interrupt request is enabled when this bit is 1. IRQ3 Enable The IRQ3 interrupt request is enabled when this bit is 1. IRQ2 Enable The IRQ2 interrupt request is enabled when this bit is 1. IRQ1 Enable The IRQ1 interrupt request is enabled when this bit is 1. IRQ0 Enable The IRQ0 interrupt request is enabled when this bit is 1.
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Section 5 Interrupt Controller
5.3.3
IRQ Sense Control Registers H and L (ISCRH and ISCRL)
The ISCR registers select the source that generates an interrupt request at IRQ7 to IRQ0 pins. Specifiable sources are the falling edge, rising edge, both edges, and level sensing.
Bit Bit Name 15 14 Initial Value R/W Description R/W IRQ7 Sense Control B R/W IRQ7 Sense Control A 00: Interrupt request is generated at IRQ7 input level low 01: Interrupt request is generated at falling edge of IRQ7 input 10: Interrupt request is generated at rising edge of IRQ7 input 11: Interrupt request is generated at both falling and rising edges of IRQ7 input 13 12 IRQ6SCB 0 IRQ6SCA 0 R/W IRQ6 Sense Control B R/W IRQ6 Sense Control A 00: Interrupt request is generated at IRQ6 input level low 01: Interrupt request is generated at falling edge of IRQ6 input 10: Interrupt request is generated at rising edge of IRQ6 input 11: Interrupt request is generated at both falling and rising edges of IRQ6 input 11 10 IRQ5SCB 0 IRQ5SCA 0 R/W IRQ5 Sense Control B R/W IRQ5 Sense Control A 00: Interrupt request is generated at IRQ5 input level low 01: Interrupt request is generated at falling edge of IRQ5 input 10: Interrupt request is generated at rising edge of IRQ5 input 11: Interrupt request is generated at both falling and rising edges of IRQ5 input 9 8 IRQ4SCB 0 IRQ4SCA 0 R/W IRQ4 Sense Control B R/W IRQ4 Sense Control A 00: Interrupt request is generated at IRQ4 input level low 01: Interrupt request is generated at falling edge of IRQ4 input 10: Interrupt request is generated at rising edge of IRQ4 input 11: Interrupt request is generated at both falling and rising edges of IRQ4 input
IRQ7SCB 0 IRQ7SCA 0
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Section 5 Interrupt Controller
Bit 7 6
Bit Name IRQ3SCB IRQ3SCA
Initial Value 0 0
R/W R/W R/W
Description IRQ3 Sense Control B IRQ3 Sense Control A 00: Interrupt request is generated at IRQ3 input level low 01: Interrupt request is generated at falling edge of IRQ3 input 10: Interrupt request is generated at rising edge of IRQ3 input 11: Interrupt request is generated at both falling and rising edges of IRQ3 input
5 4
IRQ2SCB IRQ2SCA
0 0
R/W R/W
IRQ2 Sense Control B IRQ2 Sense Control A 00: Interrupt request is generated at IRQ2 input level low 01: Interrupt request is generated at falling edge of IRQ2 input 10: Interrupt request is generated at rising edge of IRQ2 input 11: Interrupt request is generated at both falling and rising edges of IRQ2 input
3 2
IRQ1SCB IRQ1SCA
0 0
R/W R/W
IRQ1 Sense Control B IRQ1 Sense Control A 00: Interrupt request is generated at IRQ1 input level low 01: Interrupt request is generated at falling edge of IRQ1 input 10: Interrupt request is generated at rising edge of IRQ1 input 11: Interrupt request is generated at both falling and rising edges of IRQ1 input
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Section 5 Interrupt Controller
Bit 1 0
Bit Name IRQ0SCB IRQ0SCA
Initial Value 0 0
R/W R/W R/W
Description IRQ0 Sense Control B IRQ0 Sense Control A 00: Interrupt request is generated at IRQ0 input level low 01: Interrupt request is generated at falling edge of IRQ0 input 10: Interrupt request is generated at rising edge of IRQ0 input 11: Interrupt request is generated at both falling and rising edges of IRQ0 input
5.3.4
IRQ Status Register (ISR)
ISR indicates the status of IRQ7 to IRQ 0 interrupt requests.
Bit 7 6 5 4 3 2 1 0 Bit Name IRQ7F IRQ6F IRQ5F IRQ4F IRQ3F IRQ2F IRQ1F IRQ0F Initial Value 0 0 0 0 0 0 0 0 R/W* R/W R/W R/W R/W R/W R/W R/W R/W Description IRQ7 to IRQ0 flags These bits indicate the status of IRQ7 to IRQ0 interrupt requests. [Setting condition] * When the interrupt source selected by the ISCR registers occurs Cleared by reading IRQnF flag when IRQnF = 1, then writing 0 to IRQnF flag When interrupt exception handling is executed while low-level detection is set and IRQn (n = 0 to 7) input is high When IRQn interrupt exception handling is executed while detection of falling edge, rising edge, or both edges is set When the DTC is activated by an IRQn interrupt, and the DISEL bit in MRB of the DTC with the transfer counter other than 0 is cleared to 0
[Clearing conditions] * *
*
*
Note:
*
Only 0 can be written to this bit to clear the flag.
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Section 5 Interrupt Controller
5.4
5.4.1
Interrupt Sources
External Interrupts
There are 9 external interrupts: NMI and IRQ7 to IRQ0. These interrupts can be used to restore this LSI from software standby mode. NMI Interrupt: NMI is the highest-priority interrupt, and is always accepted by the CPU regardless of the interrupt control mode or the status of the CPU interrupt mask bits. The NMIEG bit in SYSCR can be used to select whether an interrupt is requested at a rising edge or a falling edge on the NMI pin. IRQ7 to IRQ0 Interrupts: IRQ7 to IRQ0 interrupts are requested by an input signal at the IRQ7 to IRQ0 pins. IRQ7 to IRQ0 interrupts have the following features: * Using ISCR, it is possible to select whether an interrupt is generated by a low level, falling edge, rising edge, or both edges, at the IRQ7 to IRQ0 pins. * Enabling or disabling of IRQ7 to IRQ0 interrupt requests can be selected with IER. * The interrupt priority level can be set with IPR. * The status of IRQ7 to IRQ0 interrupt requests is indicated in ISR. ISR flags can be cleared to 0 by software. A block diagram of IRQ7 to IRQ0 interrupts is shown in figure 5.2.
IRQnE IRQnSCA, IRQnSCB IRQnF Edge/level detection circuit IRQn input Clear signal Note: n = 7 to 0 S R Q IRQn interrupt request
Figure 5.2 Block Diagram of IRQ7 to IRQ0 Interrupts The set timing for IRQ7F to IRQ0F is shown in figure 5.3.
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Section 5 Interrupt Controller
IRQn input pin
IRQnF
Note: n = 7 to 0
Figure 5.3 Set Timing for IRQ7F to IRQ0F The detection of IRQ7 to IRQ0 interrupts does not depend on whether the relevant pin has been set for input or output. However, when a pin is used as an external interrupt input pin, do not clear the corresponding DDR to 0 to use the pin as an I/O pin for another function. The IRQ7F to IRQ0F interrupt request flags can be set to 1 when the setting condition is satisfied, regardless of IER settings. Accordingly, refer to only necessary flags. 5.4.2 Internal Interrupts
For each on-chip peripheral module, there are flags that indicate the interrupt request status, and enable bits that select enabling or disabling of these interrupts. If both of these are set to 1 for a particular interrupt source, an interrupt request is sent to the interrupt controller. 5.4.3 Interrupt Exception Handling Vector Table
Table 5.2 shows interrupt exception handling sources, vector addresses, and interrupt priorities. For default priorities, the lower the vector number, the higher the priority. Priorities among modules can be set by means of the IPR. Modules set at the same priority will conform to their default priorities. Priorities within a module are fixed.
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Section 5 Interrupt Controller
Table 5.2
Origin of Interrupt Source External pin
Interrupt Sources, Vector Addresses, and Interrupt Priorities
Vector Address* Interrupt Source NMI IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 Vector Number 7 16 17 18 19 20 21 22 23 24 Advanced Mode IPR H'001C H'0040 H'0044 H'0048 H'004C H'0050 H'0054 H'0058 H'005C H'0060 IPRC2 to IPRC0 IPRC6 to IPRC4 IPRB2 to IPRB0 IPRA6 to IPRA4 IPRA2 to IPRA0 IPRB6 to IPRB4 Priority High
DTC
SWDTEND (completion of software initiation data transfer) WOVI0 (interval timer 0) PC break ADI (completion of A/D conversion) WOVI1 (interval timer 1) Reserved TGI0A (TGR0A input capture/compare-match) TGI0B (TGR0B input capture/compare-match) TGI0C (TGR0C input capture/compare-match)
Watchdog timer 0 PC break A/D Watchdog timer 1 TPU channel 0
25 27 28 29 30 31 32 33 34
H'0064 H'006C H'0070 H'0074 H'0078 H'007C H'0080 H'0084 H'0088
IPRD6 to IPRD4 IPRE6 to IPRE4 IPRE2 to IPRE0
IPRF6 to IPRF4
Low
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Section 5 Interrupt Controller
Origin of Interrupt Source TPU channel 0
Vector Address* Interrupt Source TGI0D (TGR0D input capture/compare- match) Vector Number 35 Advanced Mode IPR H'008C IPRF6 to IPRF4 Priority High
TCI0V (overflow 0) Reserved
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
H'0090 H'0094 H'0098 H'009C H'00A0 H'00A4 H'00A8 H'00AC H'00B0 H'00B4 H'00B8 H'00BC H'00C0 H'00C4 H'00C8 H'00CC H'00D0 H'00D4 H'00D8 H'00DC IPRG2 to IPRG0 IPRG6 to IPRG4 IPRF2 to IPRF0
TPU channel 1
TGI1A (TGR1A input capture/compare-match) TGI1B (TGR1B input capture/compare-match) TCI1V (overflow 1) TCI1U (underflow 1)
TPU channel 2
TGI2A (TGR2A input capture/compare-match) TGI2B (TGR2B input capture/compare-match) TCI2V (overflow 2) TCI2U (underflow 2)
TPU channel 3
TGI3A (TGR3A input capture/compare-match) TGI3B (TGR3B input capture/compare-match) TGI3C (TGR3C input capture/compare-match) TGI3D (TGR3D input capture/compare-match) TCI3V (overflow 3)
Reserved
Low
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Section 5 Interrupt Controller
Origin of Interrupt Source TPU channel 4
Vector Address* Interrupt Source TGI4A (TGR4A input capture/compare-match) TGI4B (TGR4B input capture/compare-match) TCI4V (overflow 4) TCI4U (underflow 4) Vector Number 56 57 58 59 60 61 62 63 Advanced Mode IPR H'00E0 H'00E4 H'00E8 H'00EC H'00F0 H'00F4 H'00F8 H'00FC H'0100 H'0104 H'0108 H'010C H'0110 H'0114 H'0118 H'011C H'0140 H'0144 H'0148 H'014C H'0150 H'0154 H'0158 H'015C H'0160 H'0164 IPRK2 to IPRK0 Low IPRK6 to IPRK4 IPRJ2 to IPRJ0 IPRI2 to IPRI0 IPRI6 to IPRI4 IPRH2 to IPRH0 IPRH6 to IPRH4 Priority High
TPU channel 5
TGI5A (TGR5A input capture/compare-match) TGI5B (TGR5B input capture/compare-match) TCI5V (overflow 5) TCI5U (underflow 5)
8-bit timer channel 0
CMIA0 (compare-match A0) 64 CMIB0 (compare-match B0) 65 OVI0 (overflow 0) 66 67
8-bit timer channel 1
Reserved
CMIA1 (compare-match A1) 68 CMIB1 (compare-match B1) 69 OVI1 (overflow 1) 70 71 80
Reserved
SCI channel 0 ERI0 (receive error 0)
RXI0 (receive completion 0) 81 TXI0 (transmit data empty 0) 82 TEI0 (transmit end 0) SCI channel 1 ERI1 (receive error 1) 83 84
RXI1 (receive completion 1) 85 TXI1 (transmit data empty 1) 86 TEI1 (transmit end 1) SCI channel 2 ERI2 (receive error 2) 87 88
RXI2 (receive completion 2) 89
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Section 5 Interrupt Controller
Origin of Interrupt Source
Vector Address* Interrupt Source Vector Number Advanced Mode IPR H'0168 H'016C H'0170 H'0174 H'0178 H'017C H'0180 H'0184 H'0188 H'018C H'01A0 H'01A4 H'01A8 H'01AC H'01B0 H'01B4 H'01B8 H'01BC H'01E0 H'01E4 H'01E8 H'01EC H'01F0 H'01F4 H'01F8 H'01FC Low IPRO2 to IPRO0 IPRO6 to IPRO4 IPRM2 to IPRM0 IPRM6 to IPRM4 IPRL6 to IPRL4 IPRK2 to IPRK0 Priority High
SCI channel 2 TXI2 (transmit data empty 2) 90 TEI2 (transmit end 2) 8-bit timer channel 2 91
CMIA2 (compare-match A2) 92 CMIB2 (compare-match B2) 93 OVI2 (overflow 2) 94 95
8-bit timer channel 3
Reserved
CMIA3 (compare-match A3) 96 CMIB3 (compare-match B3) 97 OVI3 (overflow 3) 98 99 104 105 106 107 108 109 110 111 120
IEB (H8S/2552 Group only)
Reserved IERSI (reception status) IERxI (RxRDY) IETxI (TxRDY) IETSI (transmission status)
HCAN (H8S/2556 Group only)
ERS0, OVR0, RM1, SLE0 RM0
IIC2 channel 0 IICI0 (1-byte transmission/ reception completion) IIC2 channel 1 IICI1 (1-byte transmission/ reception completion) SCI channel 3 ERI3 (receive error 3)
RXI3 (receive completion 3) 121 TXI3 (transmit data empty 3) 122 TEI3 (transmit end 3) SCI channel 4 ERI4 (receive error 4) 123 124
RXI4 (receive completion 4) 125 TXI4 (transmit data empty 4) 126 TEI4 (transmit end 4) 127
Note:
*
Indicates lower 16 bits of the start address.
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Section 5 Interrupt Controller
5.5
5.5.1
Operation
Interrupt Control Modes and Interrupt Operation
Interrupt operations in this LSI differ depending on the interrupt control mode. NMI interrupts are accepted at all times except in the reset state and the hardware standby state. In the case of IRQ interrupts and on-chip peripheral module interrupts, an enable bit is provided for each interrupt. Clearing an enable bit to 0 disables the corresponding interrupt request. Interrupt sources for which the enable bits are set to 1 are controlled by the interrupt controller. Table 5.3 shows the interrupt control modes. The interrupt controller performs interrupt control according to the interrupt control mode set by the INTM1 and INTM0 bits in SYSCR, the priorities set in IPR, and the masking state indicated by the I bit in the CPU's CCR, and bits I2 to I0 in EXR. Table 5.3 Interrupt Control Modes
SYSCR Interrupt Priority Setting Interrupt Control Mode INTM1 INTM0 Register Mask Bits 0 2 1 0 0 1 0 IPR I I2 to I0
Description Interrupt mask control is performed by the I bit. Setting prohibited 8-level interrupt mask control is performed by bits I2 to I0. 8 priority levels can be set with IPR. Setting prohibited
1
Figures 5.4 shows a block diagram of the priority decision circuit.
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Section 5 Interrupt Controller
Interrupt control mode 0
I
Interrupt acceptance control Interrupt source Default priority determination 8-level mask control Vector number
IPR
I2 to I0
Interrupt control mode 2
Figure 5.4 Block Diagram of Interrupt Control Operation
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Section 5 Interrupt Controller
Interrupt Acceptance Control: In interrupt control mode 0, interrupt acceptance is controlled by the I bit in CCR. Table 5.4 shows the interrupts selected in each interrupt control mode. Table 5.4 Interrupts Selected in Each Interrupt Control Mode (1)
Interrupt Mask Bits Interrupt Control Mode 0 I 0 1 2 Legend: X: Don't care X Selected Interrupts All interrupts NMI interrupt All interrupts
8-Level Control: In interrupt control mode 2, 8-level mask level determination is performed for the selected interrupts in interrupt acceptance control according to the interrupt priority level (IPR). The interrupt source selected is the interrupt with the highest priority level, and whose priority level set in IPR is higher than the mask level. Table 5.5 Interrupts Selected in Each Interrupt Control Mode (2)
Selected Interrupts All interrupts Highest priority-level (IPR) interrupt whose priority level is greater than the mask level (IPR > I2 to I0)
Interrupt Control Mode 0 2
Default Priority Determination: When an interrupt is selected by 8-level control, its priority is determined and a vector number is generated. If the same value is set for IPR, acceptance of multiple interrupts is enabled, and so only the interrupt source with the highest priority according to the preset default priorities is selected and has a vector number generated. Interrupt sources with a lower priority than the accepted interrupt source are held pending. Table 5.6 shows operations and control signal functions in each interrupt control mode.
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Section 5 Interrupt Controller
Table 5.6
Operations and Control Signal Functions in Each Interrupt Control Mode
Interrupt Acceptance Control I O X IM *
1
Setting Interrupt Control INTM INTM Mode 1 0 0 2 0 1 0 0
8-Level Control I2 to I0 X O IM IPR *2 PR Default Priority Determination T (Trace) O O T
Legend: Interrupt operation control performed O: X: No operation. (All interrupts enabled) IM: Used as interrupt mask bit PR: Sets priority : Not used Notes: 1. Set to 1 when an interrupt is accepted. 2. Keep the initial setting.
5.5.2
Interrupt Control Mode 0
Enabling and disabling of IRQ interrupts and on-chip peripheral module interrupts can be set by means of the I bit in the CPU's CCR. Interrupts are enabled when the I bit is cleared to 0, and disabled when set to 1. Figure 5.5 shows a flowchart of the interrupt acceptance operation in this case. 1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an interrupt request is sent to the interrupt controller. 2. The I bit is referred to. If the I bit is cleared to 0, an interrupt request is accepted. If the I bit is set to 1, only an NMI interrupt is accepted, and other interrupt requests are held pending. 3. Interrupt requests are sent to the interrupt controller, the highest-ranked interrupt according to the priority system is accepted, and other interrupt requests are held pending. 4. When the CPU accepts an interrupt request, it starts interrupt exception handling after execution of the current instruction has been completed. 5. The PC and CCR are saved to the stack area by interrupt exception handling. The PC saved on the stack shows the address of the first instruction to be executed after returning from the interrupt handling routine. 6. Next, the I bit in CCR is set to 1. This masks all interrupts except NMI.
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Section 5 Interrupt Controller
7. The CPU generates a vector address for the accepted interrupt and starts execution of the interrupt handling routine at the address indicated by the contents of the vector address.
Program execution status
Interrupt generated Yes Yes NMI No
No
No I=0 Yes
Hold pending
IRQ0 Yes
No
No IRQ1 Yes TEI4 Yes
Save PC and CCR
I
Read vector address
Branch to interrupt handling routine
Figure 5.5 Flowchart of Procedure up to Interrupt Acceptance in Interrupt Control Mode 0
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1
Section 5 Interrupt Controller
5.5.3
Interrupt Control Mode 2
Eight-level masking is implemented for IRQ interrupts and on-chip peripheral module interrupts by comparing the interrupt mask level set by bits I2 to I0 of EXR in the CPU with IPR. Figure 5.6 shows a flowchart of the interrupt acceptance operation in this case. 1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an interrupt request is sent to the interrupt controller. 2. When interrupt requests are sent to the interrupt controller, the interrupt with the highest priority according to the interrupt priority levels set in IPR is selected, and lower-priority interrupt requests are held pending. If a number of interrupt requests with the same priority are generated at the same time, the interrupt request with the highest priority according to the priority system shown in table 5.2 is selected. 3. Next, the priority of the selected interrupt request is compared with the interrupt mask level set in EXR. An interrupt request with a priority no higher than the mask level set at that time is held pending, and only an interrupt request with a priority higher than the interrupt mask level is accepted. 4. When the CPU accepts an interrupt request, it starts interrupt exception handling after execution of the current instruction has been completed. 5. The PC, CCR, and EXR are saved to the stack area by interrupt exception handling. The PC saved on the stack shows the address of the first instruction to be executed after returning from the interrupt handling routine. 6. The T bit in EXR is cleared to 0. The interrupt mask level is rewritten with the priority level of the accepted interrupt. If the accepted interrupt is NMI, the interrupt mask level is set to H'7. 7. The CPU generates a vector address for the accepted interrupt and starts execution of the interrupt handling routine at the address indicated by the contents of the vector address.
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Section 5 Interrupt Controller
Program execution status
Interrupt generated? Yes Yes NMI No No
No
Level 7 interrupt? Yes Mask level 6 or below? Yes
Level 6 interrupt? No Yes
No
Level 1 interrupt? Mask level 5 or below? Yes Mask level 0? Yes No Yes
No
No
Save PC, CCR, and EXR
Hold pending
Clear T bit to 0
Update mask level
Read vector address
Branch to interrupt handling routine
Figure 5.6 Flowchart of Procedure up to Interrupt Acceptance in Interrupt Control Mode 2
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Section 5 Interrupt Controller
5.5.4
Interrupt Exception Handling Sequence
Figure 5.7 shows the interrupt exception handling sequence. The example shown is for the case where interrupt control mode 0 is set in advanced mode, and the program area and stack area are in on-chip memory.
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REJ09B0099-0600
Internal operation Stack Vector fetch Internal operation Interrupt handling routine instruction prefetch (1) (3) (5) (7) (9) (11) (13) (2) (4) (6) (8) (10) (12) (14) (6) (8) (9) (11) (10) (12) (13) (14) Saved PC and saved CCR Vector address Interrupt handling routine start address (Vector address contents) Interrupt handling routine start address ((13) = (10)(12)) First instruction of interrupt handling routine
Section 5 Interrupt Controller
Interrupt acceptance Wait for end of interrupt Instruction level determination prefetch instruction
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Interrupt request signal
Internal address bus
Internal read signal
Internal write signal
Figure 5.7 Interrupt Exception Handling
Internal data bus
(1)
Instruction prefetch address (Not executed. This is the contents of the saved PC, the return address.) (2) (4) Instruction code (Not executed.) (3) Instruction prefetch address (Not executed.) (5) SP-2 (7) SP-4
Section 5 Interrupt Controller
5.5.5
Interrupt Response Times
This LSI is capable of fast word transfer to on-chip memory, has the program area in on-chip ROM and the stack area in on-chip RAM, enabling high-speed processing. Table 5.7 shows interrupt response times -- the interval between generation of an interrupt request and execution of the first instruction in the interrupt handling routine. The execution status symbols used in table 5.7 are explained in table 5.8. Table 5.7 Interrupt Response Times (States)
Normal Mode*5 No. 1 2 3 4 5 6 Execution Status Interrupt priority determination* Number of wait states until executing instruction ends*2 PC, CCR, EXR stack save Vector fetch Instruction fetch*
3 4 1
Advanced Mode INTM1 = 0 3 1 to 19 + 2*SI 2*SK 2*SI 2*SI 2 12 to 32 INTM1 = 1 3 1 to 19 + 2*SI 3*SK 2*SI 2*SI 2 13 to 33
INTM1 = 0 3 1 to 19 + 2*SI 2*SK SI 2*SI 2 11 to 31
INTM1 = 1 3 1 to 19 + 2*SI 3*SK SI 2*SI 2 12 to 32
Internal processing*
Total (using on-chip memory) Notes: 1. 2. 3. 4. 5.
Two states in case of internal interrupt. Refers to MULXS and DIVXS instructions. Prefetch after interrupt acceptance and interrupt handling routine prefetch. Internal processing after interrupt acceptance and internal processing after vector fetch. Not available in this LSI.
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Section 5 Interrupt Controller
Table 5.8
Number of States in Interrupt Handling Routine Execution Status
Object of Access External Device* 8-Bit Bus 16-Bit Bus 2-State Access 2 3-State Access 3+m
Symbol Instruction fetch Branch address read Stack manipulation SI SJ SK
On-Chip Memory 1
2-State Access 4
3-State Access 6 + 2m
Legend: m: Number of wait states in an external device access. Note: * Not available in this LSI.
5.5.6
DTC Activation by Interrupt
The DTC can be activated by an interrupt. In this case, the following selections can be made. 1. 2. 3. Interrupt request to CPU Activation request to DTC Multiple selection of 1 and 2 above.
For details on interrupt request, which enables DTC activation, see section 8, Data Transfer Controller (DTC). Figure 5.8 shows a block diagram of DTC and interrupt controller.
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Section 5 Interrupt Controller
Interrupt request IRQ interrupt
Selection circuit Selection signal Clear signal
DTC activation request vector number
Control logic Clear signal
DTC
On-chip peripheral module
Interrupt source clear signal
DTCER
DTVECR SWDTE clear signal Priority determination Interrupt controller CPU interrupt request vector number CPU I, I2 to I0
Figure 5.8 DTC and Interrupt Controller Interrupt controller of DTC control has the following three main functions. Interrupt Source Selection: For interruption source, select DTC activation request or CPU interruption request by the DTCE bits in DTCERA to DTCERG, and DTCERI of the DTC. After DTC data transfer, the DTCE bit is cleared to 0, and an interrupt request to the CPU can be made by the setting of the DISEL bit in MRB of the DTC. When DTC performs data transfer for prescribed number of times and transfer counter becomes 0, the DTCE bit should be cleared to 0 and an interrupt request to the CPU is made after DTC data transfer. Priority Determination: DTC activation source is selected according to priority of default setting. Mask level and priority level do not affect the selection. For details, see section 8.4, Location of Register Information and DTC Vector Table.
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Section 5 Interrupt Controller
Operation Order: When the same interrupts are selected as DTC activation source and CPU interruption source, DTC data is transferred, and then CPU interrupt exception processing is made. Table 5.9 shows interrupt source selection and interrupt source clear control by the setting of the DTCE bit in DTCERA to DTCERG, and DTCERI of the DTC and the setting of the DISEL bit in MRB of the DTC. Table 5.9
Settings DTC DTCE 0 1 DESEL 0 1
Interrupt Source Selection and Clear Control
Interrupt Source Selection and Clear Control DTC X # O CPU # X #
Legend: #: Corresponding interrupt is used. Interrupt source is cleared. (The CPU should clear the source flag in the interrupt processing routine.) Corresponding interrupt is used. Interrupt source is not cleared. O: X: Corresponding interrupt cannot be used. *: Don't care
Usage Note: Interrupt sources of the SCI and A/D converter are cleared when the DTC reads or writes prescribed register, and they do not depend on the DTCE or DISEL bit.
5.6
5.6.1
Usage Notes
Contention between Interrupt Generation and Disabling
When an interrupt enable bit is cleared to 0 to disable interrupt requests, the disabling becomes effective after execution of the instruction. When an interrupt enable bit is cleared to 0 by an instruction such as BCLR or MOV, and if an interrupt is generated during execution of the instruction, the interrupt concerned will still be enabled on completion of the instruction, and so interrupt exception handling for that interrupt will be executed on completion of the instruction. However, if there is an interrupt request of higher priority than that interrupt, interrupt exception handling will be executed for the higher-priority interrupt, and the lower-priority interrupt will be ignored.
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Section 5 Interrupt Controller
The same also applies when an interrupt source flag is cleared to 0. The above contention will not occur, if an enable bit or interrupt source flag is cleared to 0 while the interrupt is masked. Figure 5.9 shows an example in which the CMIEA bit in the TCR register of the 8-bit timer is cleared to 0.
TCR write cycle by CPU CMIA exception handling
Internal address bus
TCR address
Internal write signal
CMIEA
CMFA
CMIA interrupt signal
Figure 5.9 Contention between Interrupt Generation and Disabling 5.6.2 Instructions That Disable Interrupts
The instructions that disable interrupt requests directly after execution are LDC, ANDC, ORC, and XORC. After any of these instructions are executed, all interrupts including NMI are disabled and the next instruction is always executed. When the I bit is set by one of these instructions, the new value becomes valid two states after execution of the instruction ends. 5.6.3 When Interrupts Are Disabled
There are times when interrupt acceptance is disabled by the interrupt controller.
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Section 5 Interrupt Controller
The interrupt controller disables interrupt acceptance for a 3-state period after the CPU has updated the mask level with an LDC, ANDC, ORC, or XORC instruction. 5.6.4 Interrupts during Execution of EEPMOV Instruction
Interrupt operation differs between the EEPMOV.B instruction and the EEPMOV.W instruction. With the EEPMOV.B instruction, an interrupt request (including NMI) issued during the transfer is not accepted until the transfer is completed. With the EEPMOV.W instruction, if an interrupt request is issued during the transfer, interrupt exception handling starts at a break in the transfer cycle. The PC value saved on the stack in this case is the address of the next instruction. Therefore, if an interrupt is generated during execution of an EEPMOV.W instruction, the following coding should be used.
L1: EEPMOV.W MOV.W BNE R4,R4 L1
5.6.5
IRQ Interrupt
When operating by clock input, acceptance of input to an IRQ is synchronized with the clock. In software standby mode and watch mode, the input is accepted asynchronously. For details on the input conditions, see section 24.4.3, Control Signal Timing. 5.6.6 NMI Interrupt Usage Notes
The NMI interrupt is part of the exception processing performed cooperatively by the LSI's internal interrupt controller and the CPU when the system is operating normally under the specified electrical conditions. No operations, including NMI interrupts, are guaranteed when operation is not normal (runaway status) due to software problems or abnormal input to the LSI's pins. In such cases, the LSI may be restored to the normal program execution state by applying an external reset.
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Section 6 PC Break Controller (PBC)
Section 6 PC Break Controller (PBC)
The PC break controller (PBC) provides functions that simplify program debugging. Using these functions, it is easy to create a self-monitoring debugger, enabling programs to be debugged with the chip alone, without using an in-circuit emulator. A block diagram of the PC break controller is shown in figure 6.1.
6.1
Features
* Two break channels (A and B) * 24-bit break address Bit masking possible * Four types of break compare conditions Instruction fetch Data read Data write Data read/write * Bus master Either CPU or CPU/DTC can be selected * The timing of PC break exception handling after the occurrence of a break condition is as follows: Immediately before execution of the instruction fetched at the set address (instruction fetch) Immediately after execution of the instruction that accesses data at the set address (data access) * Module stop mode can be set
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Section 6 PC Break Controller (PBC)
BARA
BCRA
Output control
Mask control
Comparator
Match signal
Internal address
Control logic
Access status
PC break interrupt
Comparator
Match signal
Control logic
Output control
Mask control
BARB
BCRB
Figure 6.1 Block Diagram of PC Break Controller
6.2
Register Descriptions
The PC break controller has the following registers. * * * * Break address register A (BARA) Break address register B (BARB) Break control register A (BCRA) Break control register B (BCRB) Break Address Register A (BARA)
6.2.1
BARA is a 32-bit readable/writable register that specifies the channel A break address.
Bit 31 to 24 Bit Name Initial Value R/W Description Reserved These bits are read as an undefined value and cannot be modified. 23 to 0 BAA23 to BAA0 H'000000 R/W These bits set the PC break address of channel A.
Undefined
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Section 6 PC Break Controller (PBC)
6.2.2
Break Address Register B (BARB)
BARB is the channel B break address register. The bit configuration is the same as for BARA. 6.2.3 Break Control Register A (BCRA)
BCRA controls channel A PC breaks.
Bit 7 Bit Name CMFA Initial Value 0 R/W
1
Description [Setting condition] When a condition set for channel A is satisfied [Clearing condition] When 0 is written to CMFA after reading*2 CMFA = 1
R/(W)* Condition Match Flag A
6
CDA
0
R/W
CPU Cycle/DTC Cycle Select A Selects the channel A break condition bus master. 0: CPU 1: CPU or DTC
5 4 3
BAMRA2 BAMRA1 BAMRA0
0 0 0
R/W R/W R/W
Break Address Mask Register A2 to A0 These bits specify which bits of the break address set in BARA are to be unmasked. 000: BAA23 to BAA0 (All bits are unmasked) 001: BAA23 to BAA1 (Lowest bit is masked) 010: BAA23 to BAA2 (Lower 2 bits are masked) 011: BAA23 to BAA3 (Lower 3 bits are masked) 100: BAA23 to BAA4 (Lower 4 bits are masked) 101: BAA23 to BAA8 (Lower 8 bits are masked) 110: BAA23 to BAA12 (Lower 12 bits are masked) 111: BAA23 to BAA16 (Lower 16 bits are masked)
2 1
CSELA1 CSELA0
0 0
R/W R/W
Break Condition Select These bits select the break condition of channel A. 00: Instruction fetch is used as the break condition. 01: Data read cycle is used as the break condition. 10: Data write cycle is used as the break condition. 11: Data read/write cycle is used as the break condition.
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Section 6 PC Break Controller (PBC)
Bit 0
Bit Name BIEA
Initial Value 0
R/W R/W
Description Break Interrupt Enable When this bit is set to 1, the PC break interrupt request of channel A is enabled.
Notes: 1. Only 0 can be written to this bit to clear the flag. 2. Read the state wherein CMFA = 1 twice or more, when the CMFA is polled after inhibiting the PC break interruption.
6.2.4
Break Control Register B (BCRB)
BCRB is the channel B break control register. The bit configuration is the same as for BCRA.
6.3
Operation
The operation flow from break condition setting to PC break interrupt exception handling is shown in section 6.3.1, PC Break Interrupt Due to Instruction Fetch, and section 6.3.2, PC Break Interrupt Due to Data Access, taking the example of channel A. 6.3.1 PC Break Interrupt Due to Instruction Fetch
1. Set the break address in BARA. For a PC break caused by an instruction fetch, set the address of the first instruction byte as the break address. 2. Set the break conditions in BCR. Set bit 6 (CDA) to 0 to select the CPU because the bus master must be the CPU for a PC break caused by an instruction fetch. Set the address bits to be masked to bits 5 to 3 (BAMRA2 to BAMRA0). Set bits 2 and 1 (CSELA1 and CSELA0) to 00 to specify an instruction fetch as the break condition. Set bit 0 (BIEA) to 1 to enable break interrupts. 3. When the instruction at the set address is fetched, a PC break request is generated immediately before execution of the fetched instruction, and the condition match flag (CMFA) is set. 4. After priority determination by the interrupt controller, PC break interrupt exception handling is started.
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Section 6 PC Break Controller (PBC)
6.3.2
PC Break Interrupt Due to Data Access
1. Set the break address in BARA. For a PC break caused by a data access, set the target ROM, RAM, I/O, or external address space address as the break address. Stack operations and branch address reads are included in data accesses. 2. Set the break conditions in BCRA. Select the bus master with bit 6 (CDA). Set the address bits to be masked to bits 5 to 3 (BAMRA2 to BAMRA0). Set bits 2 and 1 (CSELA1 and CSELA0) to 01, 10, or 11 to specify data access as the break condition. Set bit 0 (BIEA) to 1 to enable break interrupts. 3. After execution of the instruction that performs a data access on the set address, a PC break request is generated and the condition match flag (CMFA) is set. 4. After priority determination by the interrupt controller, PC break interrupt exception handling is started. 6.3.3 Notes on PC Break Interrupt Handling
* When a PC break interrupt is generated at the transfer address of an EEPMOV.B instruction PC break exception handling is executed after all data transfers have been completed and the EEPMOV.B instruction has ended. * When a PC break interrupt is generated at a DTC transfer address PC break exception handling is executed after the DTC has completed the specified number of data transfers, or after data for which the DISEL bit is set to 1 has been transferred. 6.3.4 Operation in Transitions to Power-Down Modes
The operation when a PC break interrupt is set for an instruction fetch at the address after a SLEEP instruction is shown below. * When the SLEEP instruction causes a transition from high-speed (medium-speed) mode to sleep mode After execution of the SLEEP instruction, a transition is not made to sleep mode, and PC break exception handling is executed. After execution of PC break exception handling, the instruction at the address after the SLEEP instruction is executed (figure 6.2 (A)).
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Section 6 PC Break Controller (PBC)
* When the SLEEP instruction causes a transition to software standby mode or watch mode After execution of the SLEEP instruction, a transition is made to the respective mode, and PC break exception handling is not executed. However, the CMFA or CMFB flag is set (figure 6.2 (B)).
SLEEP instruction execution
SLEEP instruction execution
PC break exception handling execution
Transition to respective mode (B)
Execution of instruction after SLEEP instruction (A)
Figure 6.2 Operation in Power-Down Mode Transitions 6.3.5 When Instruction Execution Is Delayed by One State
While the break interrupt enable bit is set to 1, instruction execution in the following cases is one state later than usual. * For 1-word branch instructions (Bcc d:8, BSR, JSR, JMP, TRAPA, RTE, and RTS) in on-chip ROM or RAM * When break interruption by instruction fetch is set, the set address indicates on-chip ROM or RAM space, and that address is used for data access * When break interruption by instruction fetch is set, if the instruction to be executed immediately before the set instruction has one of the addressing modes shown below, and that address indicates on-chip ROM or RAM Addressing modes: @ERn, @(d:16,ERn), @(d:32,ERn), @-ERn/ERn+, @aa:8, @aa:24, @aa:32, @(d:8,PC), @(d:16,PC), @@aa:8 * When break interruption by instruction fetch is set, if the instruction to be executed immediately before the set instruction is NOP or SLEEP, or has #xx, Rn as its addressing mode, and that instruction is located in on-chip ROM or RAM
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Section 6 PC Break Controller (PBC)
6.4
6.4.1
Usage Notes
Module Stop Mode Setting
PBC operation can be disabled or enabled using the module stop control register. The initial setting is for PBC operation to be halted. Register access is enabled by clearing module stop mode. For details, see section 22, Power-Down Modes. 6.4.2 PC Break Interrupts
The PC break interrupt is shared by channels A and B. The channel from which the request was issued must be determined by the interrupt handler. 6.4.3 CMFA and CMFB
The CMFA and CMFB flags are not automatically cleared to 0, so 0 must be written to CMFA or CMFB after first reading the flag while it is set to 1. If the flag is left set to 1, another interrupt will be requested after interrupt handling ends. 6.4.4 PC Break Interrupt when DTC Is Bus Master
A PC break interrupt generated when the DTC is the bus master is accepted after the bus mastership has been transferred to the CPU by the bus controller. 6.4.5 PC Break Set for Instruction Fetch at Address Following BSR, JSR, JMP, TRAPA, RTE, or RTS Instruction
Even if the instruction at the address following a BSR, JSR, JMP, TRAPA, RTE, or RTS instruction is fetched, it is not executed, and so a PC break interrupt is not generated by the instruction fetch at the next address. 6.4.6 I Bit Set by LDC, ANDC, ORC, or XORC Instruction
When the I bit is set by an LDC, ANDC, ORC, or XORC instruction, a PC break interrupt becomes valid two states after the end of the executing instruction. If a PC break interrupt is set for the instruction following one of these instructions, since interrupts, including NMI, are disabled for a 3-state period in the case of LDC, ANDC, ORC, and XOR, the next instruction is always executed. For details, see section 5, Interrupt Controller.
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Section 6 PC Break Controller (PBC)
6.4.7
PC Break Set for Instruction Fetch at Address Following Bcc Instruction
A PC break interrupt is generated if the instruction at the next address is executed in accordance with the branch condition, and is not generated if the instruction at the next address is not executed. 6.4.8 PC Break Set for Instruction Fetch at Branch Destination Address of Bcc Instruction
A PC break interrupt is generated if the instruction at the branch destination is executed in accordance with the branch condition, and is not generated if the instruction at the branch destination is not executed.
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Section 7 Bus Controller
Section 7 Bus Controller
This LSI has a built-in bus controller (BSC) that manages the external address space divided into eight areas. As the bus controller has a bus mastership arbitration function, it controls the operation of the CPU (the internal bus master) and the data transfer controller (DTC).
7.1
Features
* Manages external address space in area units Manages the external address space as 8 areas in 2-Mbyte units Bus specifications can be set independently for each area Burst ROM interface can be set * Basic bus interface H8S/2552 Group, H8S/2506 Group: Chip select signals (CS0 to CS7) can be output for areas 0 to 7. H8S/2556 Group: Chip select signals (CS0, CS3 to CS7) can be output for areas 0 and 3 to 7. 8-bit access or 16-bit access can be selected for each area 2-state access or 3-state access can be selected for each area Program wait states can be inserted for each area * Burst ROM interface Burst ROM interface can be selected for area 0 One or two states can be selected for the burst cycle * Idle cycle insertion Idle cycle can be inserted between consecutive read accesses to different external areas Idle cycle can be inserted before a write access to an external area immediately after a read access to an external area * Bus mastership arbitration The on-chip bus arbiter arbitrates the bus mastership among CPU and DTC. * Other features External bus mastership release function
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Section 7 Bus Controller
Figure 7.1 shows a block diagram of the bus controller.
Chip select signal Area decoder
Internal address bus
ABWCR External bus control signal ASTCR BCRH BCRL BREQ BACK Bus controller
Internal data bus
Internal control signal Bus mode signal
WAIT
Wait controller
WCRH WCRL
CPU bus mastership request signal Bus arbiter DTC bus mastership request signal CPU bus acknowledge signal DTC bus acknowledge signal
Legend: ABWCR: Bus width control register ASTCR: Access state control register WCRH, WCRL: Wait control registers H, L BCRH, BCRL: Bus control registers H, L
Figure 7.1 Block Diagram of Bus Controller
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Section 7 Bus Controller
7.2
Input/Output Pins
Table 7.1 summarizes the pins of the bus controller. Table 7.1
Name Address strove Read High write
Pin Configuration
Symbol AS RD HWR I/O Function
Output Strobe signal indicating that address output on address bus is enabled. Output Strobe signal indicating that external address space is being read. Output Strobe signal indicating that external address space is to be written, and upper half (D15 to D8) of data bus is enabled. Output Strobe signal indicating that external address space is to be written, and lower half (D7 to D0) of data bus is enabled. Output Strobe signal indicating that areas 0 to 7 are selected. Input Input Wait request signal when accessing external 3-state access space. Request signal that releases bus to external device.
Low write
LWR
Chip select 0 to 7 CS0 to CS7* Wait Bus mastership request Bus mastership request acknowledge Note: * WAIT BREQ BACK
Output Acknowledge signal indicating that bus has been released.
CS1 and CS2 are not provided in the H8S/2556 Group.
7.3
Register Descriptions
The bus controller has the following registers. * * * * * * * Bus width control register (ABWCR) Access state control register (ASTCR) Wait control register H (WCRH) Wait control register L (WCRL) Bus control register H (BCRH) Bus control register L (BCRL) Pin function control register (PFCR)
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Section 7 Bus Controller
7.3.1
Bus Width Control Register (ABWCR)
ABWCR designates each area as either an 8-bit access space or a 16-bit access space. ABWCR sets the data bus width for the external memory space. The bus width for on-chip memory and internal I/O registers is fixed regardless of the settings in ABWCR.
Bit 7 6 5 4 3 2 1 0 Bit Name ABW7 ABW6 ABW5 ABW4 ABW3 ABW2 ABW1 ABW0 Initial Value 1 1 1 1 1 1 1 1 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Area 7 to 0 Bus Width Control These bits select whether the corresponding area is to be designated for 8-bit access or 16-bit access. 0: Area n is designated for 16-bit access 1: Area n is designated for 8-bit access Note: n = 7 to 0
7.3.2
Access State Control Register (ASTCR)
ASTCR designates each area as either a 2-state access space or a 3-state access space. ASTCR sets the number of access states for the external memory space. The number of access states for on-chip memory and internal I/O registers is fixed regardless of the settings in ASTCR.
Bit 7 6 5 4 3 2 1 0 Bit Name AST7 AST6 AST5 AST4 AST3 AST2 AST1 AST0 Initial Value 1 1 1 1 1 1 1 1 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Area 7 to 0 Access State Control These bits select whether the corresponding area is to be designated as a 2-state access space or a 3-state access space. Wait state insertion is enabled or disabled at the same time. 0: Area n is designated for 2-state access Wait state insertion in area n external space is disabled 1: Area n is designated for 3-state access Wait state insertion in area n external space is enabled Note: n = 7 to 0
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Section 7 Bus Controller
7.3.3
Wait Control Registers H and L (WCRH, WCRL)
WCRH and WCRL select the number of program wait states for each area. Program wait states are not inserted in the case of on-chip memory or internal I/O registers. * WCRH
Bit 7 6 Bit Name W71 W70 Initial Value 1 1 R/W R/W R/W Description Area 7 Wait Control 1 and 0 These bits select the number of program wait states when area 7 in external address space is accessed while the AST7 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted 5 4 W61 W60 1 1 R/W R/W Area 6 Wait Control 1 and 0 These bits select the number of program wait states when area 6 in external address space is accessed while the AST6 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted 3 2 W51 W50 1 1 R/W R/W Area 5 Wait Control 1 and 0 These bits select the number of program wait states when area 5 in external address space is accessed while the AST5 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted
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Section 7 Bus Controller
Bit 1 0
Bit Name W41 W40
Initial Value 1 1
R/W R/W R/W
Description Area 4 Wait Control 1 and 0 These bits select the number of program wait states when area 4 in external address space is accessed while the AST4 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted
* WCRL
Bit 7 6 Bit Name W31 W30 Initial Value 1 1 R/W R/W R/W Description Area 3 Wait Control 1 and 0 These bits select the number of program wait states when area 3 in external address space is accessed while the AST3 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted 5 4 W21 W20 1 1 R/W R/W Area 2 Wait Control 1 and 0 These bits select the number of program wait states when area 2 in external address space is accessed while the AST2 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted
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Section 7 Bus Controller
Bit 3 2
Bit Name W11 W10
Initial Value 1 1
R/W R/W R/W
Description Area 1 Wait Control 1 and 0 These bits select the number of program wait states when area 1 in external address space is accessed while the AST1 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted
1 0
W01 W00
1 1
R/W R/W
Area 0 Wait Control 1 and 0 These bits select the number of program wait states when area 0 in external address space is accessed while the AST0 bit in ASTCR is set to 1. 00: Program wait states are not inserted 01: 1 program wait state is inserted 10: 2 program wait states are inserted 11: 3 program wait states are inserted
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Section 7 Bus Controller
7.3.4
Bus Control Register H (BCRH)
BCRH selects enabling or disabling of idle cycle insertion, and the memory interface for area 0.
Bit 7 Bit Name ICIS1 Initial Value 1 R/W R/W Description Idle Cycle Insertion 1 Selects whether or not one idle cycle state is to be inserted between bus cycles when consecutive external read cycles are performed in different areas. 0: Idle cycle is not inserted in case of consecutive external read cycles in different areas 1: Idle cycle is inserted in case of consecutive external read cycles in different areas 6 ICIS0 1 R/W Idle Cycle Insertion 0 Selects whether or not one idle cycle state is to be inserted between bus cycles when consecutive external read and write cycles are performed. 0: Idle cycle is not inserted in case of consecutive external read and write cycles 1: Idle cycle is inserted in case of consecutive external read and write cycles 5 BRSTRM 0 R/W Burst ROM Enable Selects whether area 0 is used as a burst ROM interface. 0: Area 0 is basic bus interface 1: Area 0 is burst ROM interface 4 BRSTS1 1 R/W Burst Cycle Select 1 Selects the number of burst cycles for the burst ROM interface. 0: Burst cycle comprises 1 state 1: Burst cycle comprises 2 states 3 BRSTS0 0 R/W Burst Cycle Select 0 Selects the number of words that can be accessed in a burst ROM interface burst access. 0: Max. 4 words in burst access 1: Max. 8 words in burst access
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Section 7 Bus Controller
Bit
Bit Name
Initial Value All 0
R/W R/W
Description Reserved The write value should always be 0.
2 to 0
7.3.5
Bus Control Register L (BCRL)
BCRL performs selection of the external bus-released state protocol, and enabling or disabling of the WAIT pin input.
Bit 7 Bit Name BRLE Initial Value 0 R/W R/W Description Bus Release Enable Enables or disables external bus release. 0: External bus release is disabled. BREQ and BACK can be used as I/O ports. 1: External bus release is enabled. 6 5 4 3 2, 1 0 WAITE 0 0 0 1 All 0 0 R/W - R/W R/W R/W R/W Reserved The write value should always be 0. Reserved This bit is always read as 0 and cannot be modified. Reserved The write value should always be 0. Reserved The write value should always be 1. Reserved The write value should always be 0. WAIT Pin Enable Selects enabling or disabling of wait input by the WAIT pin. 0: Wait input by the WAIT pin is disabled. The WAIT pin can be used as I/O port. 1: Wait input by the WAIT pin is enabled.
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Section 7 Bus Controller
7.3.6
Pin Function Control Register (PFCR)
PFCR performs address output control in external extended mode.
Bit 7, 6 5 Bit Name BUZZE Initial Value All 0 0 R/W R/W R/W Description Reserved The write value should always be 0. BUZZ Output Enable Enables/disables BUZZ output of the PF1 pin. Input clock of WDT_1 selected by the PSS, CKS2 to CKS0 bits is output as BUZZ signal. 0: Functions as PF1 input/output pins 1: Functions as BUZZ output pins 4 0 R/W Reserved The write value should always be 0.
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Bit 3 2 1 0
Bit Name AE3 AE2 AE1 AE0
Initial Value 0 0 0 0
R/W R/W R/W R/W R/W
Description Address Output Enable 3 to 0 These bits select enabling or disabling of address outputs A8 to A23 in ROM extended mode. When a pin is enabled for address output, the address is output regardless of the corresponding DDR setting. When a pin is disabled for address output, it becomes an output port when the corresponding DDR bit is set to 1. 0000: A8 to A23 output disabled. 0001: A8 output enabled. A9 to A23 output disabled. 0010: A8 and A9 output enabled. A10 to A23 output disabled. 0011: A8 to A10 output enabled. A11 to A23 output disabled. 0100: A8 to A11 output enabled. A12 to A23 output disabled. 0101: A8 to A12 output enabled. A13 to A23 output disabled. 0110: A8 to A13 output enabled. A14 to A23 output disabled. 0111: A8 to A14 output enabled. A15 to A23 output disabled. 1000: A8 to A15 output enabled. A16 to A23 output disabled. 1001: A8 to A16 output enabled. A17 to A23 output disabled. 1010: A8 to A17 output enabled. A18 to A23 output disabled. 1011: A8 to A18 output enabled. A19 to A23 output disabled. 1100: A8 to A19 output enabled. A20 to A23 output disabled. 1101: A8 to A20 output enabled. A21 to A23 output disabled. 1110: A8 to A21 output enabled. A22 and A23 output disabled. 1111: A8 to A23 output enabled.
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Section 7 Bus Controller
7.4
7.4.1
Bus Control
Area Divisions
In advanced mode, the bus controller partitions the 16-Mbyte address space into eight areas, area 0 to area 7, in 2-Mbyte units, and performs bus control for external address space in area units. In normal mode*, it controls a 64-kbyte address space comprising part of area 0. Figure 7.2 shows an outline of the memory map. The chip select signals (CS0 to CS7) can be output for each area. Note: * Not available in this LSI.
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H'000000 Area 0 (2 Mbytes) H'1FFFFF H'200000 Area 1 (2 Mbytes) H'3FFFFF H'400000 Area 2 (2 Mbytes) H'5FFFFF H'600000 Area 3 (2 Mbytes) H'7FFFFF H'800000 Area 4 (2 Mbytes) H'9FFFFF H'A00000 Area 5 (2 Mbytes) H'BFFFFF H'C00000 Area 6 (2 Mbytes) H'DFFFFF H'E00000 Area 7 (2 Mbytes) H'FFFFFF (1) Advanced mode Note: * Not available in this LSI.
H'0000
H'FFFF
(2) Normal mode*
Figure 7.2 Overview of Area Divisions 7.4.2 Bus Specifications
The external address space bus specifications consist of three elements: bus width, number of access states, and number of program wait states. The bus width and number of access states for on-chip memory and internal I/O registers are fixed, and are not affected by the bus controller. Bus width: A bus width of 8 or 16 bits can be selected with ABWCR. An area for which an 8-bit bus is selected functions as an 8-bit access space, and an area for which a 16-bit bus is selected functions as a 16-bit access space.
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If all areas are designated for 8-bit access, 8-bit bus mode is set; if any area is designated for 16bit access, 16-bit bus mode is set. When the burst ROM interface is designated, 16-bit bus mode is always set. Number of access states: Two or three access states can be selected with ASTCR. An area for which 2-state access is selected functions as a 2-state access space, and an area for which 3-state access is selected functions as a 3-state access space. With the burst ROM interface, the number of access states may be determined without regarding to ASTCR. When 2-state access space is designated, wait insertion is disabled. Number of program wait states: When 3-state access space is designated by ASTCR, the number of program wait states to be inserted automatically is selected with WCRH and WCRL. From 0 to 3 program wait states can be selected. Table 7.2
ABWCR ABWn 0
Bus Specifications for Each Area (Basic Bus Interface)
ASTCR ASTn 0 1 WCRH, WCRL Wn1 0 Wn0 0 1 1 0 0 1 0 1 1 0 1 Bus Specifications (Basic Bus Interface) Number of Access Number of Program Bus Width States Wait States 16 2 3 0 0 1 2 3 8 2 3 0 0 1 2 3
1
0 1
7.4.3
Bus Interface for Each Area
The initial state of each area is basic bus interface, 3-state access space. The initial bus width is selected according to the operating mode. The bus specifications described here cover basic items only, and sections 7.6, Basic Bus Interface, and 7.7, Burst ROM Interface, on each memory interface should be referred to for further details.
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Area 0: Area 0 includes on-chip ROM, and in ROM-enabled extended mode, space excluding onchip ROM is external address space. When external address space of area 0 is accessed, the CS0 signal can be output. Either basic bus interface or burst ROM interface can be selected for area 0. Areas 1 to 6: In external extended mode, all of areas 1 to 6 are external address spaces. When external address spaces of areas 1 to 6 are accessed, the CS1 to CS6 pin signals can be output respectively. Only the basic bus interface can be used for areas 1 to 6. Area 7: Area 7 includes on-chip RAM and internal l/O registers. In external extended mode, the space excluding on-chip RAM and internal l/O registers, is external address space. The on-chip RAM is enabled when the RAME bit in the system control register (SYSCR) is set to 1; when the RAME bit is cleared to 0, the on-chip RAM is disabled and the corresponding space becomes external address space. When external address space of area 7 is accessed, the CS7 signal can be output. Only the basic bus interface can be used for area 7. 7.4.4 Chip Select Signals
This LSI can output chip select signals (CS0 to CS7) to areas 0 to 7, and these signals are driven low respectively when the corresponding external address space area is accessed. Figure 7.3 shows an example of CSn (n = 0 to 7) signal output timing. Enabling or disabling of the CSn signal is performed by setting the data direction register (DDR) for the port corresponding to the particular CSn pin. In ROM-enabled extended mode, pins CS0 to CS7 are all placed in the input state after a poweron reset, and so the corresponding DDR should be set to 1 when outputting signals CS0 to CS7. For details, see section 9, I/O Ports.
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Section 7 Bus Controller
Bus cycle T1 T2 T3
Address bus
External address of area n
CSn
Figure 7.3 CSn Signal Output Timing (n = 0 to 7)
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Section 7 Bus Controller
7.5
Basic Timing
The CPU is driven by a system clock, denoted by the symbol . The period from one rising edge of to the next is referred to as a "state." The memory cycle or bus cycle consists of one, two, or three states. Different methods are used to access on-chip memory, on-chip peripheral modules, and the external address space. 7.5.1 On-Chip Memory (ROM, RAM) Access Timing
On-chip memory is accessed in one state. The data bus width is 16 bits, enabling both byte and word transfer. Figure 7.4 shows the on-chip memory access cycle. Figure 7.5 shows the pin states.
Bus cycle
T1
Internal address bus Address
Internal read signal Read Internal data bus Read data
Internal write signal Write Internal data bus Write data
Figure 7.4 On-Chip Memory Access Cycle
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Section 7 Bus Controller
Bus cycle
T1
Address bus AS RD HWR, LWR Data bus Retained High High High High impedance
Figure 7.5 Pin States during On-Chip Memory Access 7.5.2 On-Chip Peripheral Module Access Timing
On-Chip Peripheral Module Access Timing Excluding Port H, Port J, IIC2, IEB, and HCAN: The on-chip peripheral modules are accessed in two states except for port H, port J, IIC2, IEB, and HCAN. The data bus width is either 8 bits or 16 bits, depending on the particular internal I/O register being accessed. Figure 7.6 shows the access timing for the on-chip peripheral modules. Figure 7.7 shows the pin states.
Bus cycle
T1 T2
Internal address bus Address
Internal read signal Read Internal data bus Read data
Internal write signal Write Internal data bus Write data
Figure 7.6 On-Chip Peripheral Module Access Cycle
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Section 7 Bus Controller
Bus cycle
T1 T2
Address bus AS RD HWR, LWR Data bus
Retained High High High High impedance
Figure 7.7 Pin States during On-Chip Peripheral Module Access On-Chip Port H, Port J, and IIC2 Module Access Timing: On-chip port H, port J, and IIC2 modules are accessed in four states. At this time, the data bus width is 8 bits. Figure 7.8 shows onchip port H, port J, and IIC2 module access timing, and figure 7.9 shows the pin states.
Bus cycle T1 T2 T3 T4
Internal address bus
Address
Read
Port H, port J, and IIC2 read signal Internal data bus Read data
Write
Port H, port J, and IIC2 write signal Internal data bus Write data
Figure 7.8 On-Chip Port H, Port J, and IIC2 Module Access Cycle
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Section 7 Bus Controller
Bus cycle T1 Address bus AS RD HWR, LWR Data bus T2 T3 T4
Retained
High High High
High impedance
Figure 7.9 Pin States during On-Chip Port H, Port J, and IIC2 Module Access On-Chip IEB Module Access Timing (H8S/2552 Group Only): On-chip IEB module is accessed in four states. At this time, the data bus width is 8 bits. Figure 7.10 shows on-chip IEB module access timing, and figure 7.11 shows the pin states.
Bus cycle T1 T2 T3 T4
Internal address bus
Address
IEB read signal Read Internal data bus Read data
IEB write signal Write Internal data bus Write data
Figure 7.10 On-Chip IEB Module Access Cycle
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Section 7 Bus Controller
Bus cycle T1 Address bus AS RD HWR, LWR Data bus T2 T3 T4
Retained
High High High
High impedance
Figure 7.11 Pin States during On-Chip IEB Module Access On-Chip HCAN Module Access Timing (H8S/2556 Group Only):On-chip HCAN module is accessed in five states. At this time, the data bus width is 16 bits. Figure 7.12 shows on-chip HCAN module access timing, and figure 7.13 shows the pin states.
Bus cycle T1 T2 T3 T4 T5
Internal address bus
Address
HCAN read signal Read Internal data bus Read data
HCAN write signal Write Internal data bus Write data
Figure 7.12 On-Chip HCAN Module Access Cycle
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Bus cycle T1 Address bus AS RD HWR, LWR Data bus T2 T3 T4 T5
Retained
High High High
High impedance
Figure 7.13 Pin States during On-Chip HCAN Module Access 7.5.3 External Address Space Access Timing
The external address space is accessed with an 8-bit or 16-bit data bus width in a two-state or three-state bus cycle. In three-state access, wait states can be inserted. For further details, see section 7.6.3, Basic Timing.
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Section 7 Bus Controller
7.6
Basic Bus Interface
The basic bus interface enables direct connection of ROM, SRAM, and so on. 7.6.1 Data Size and Data Alignment
Data sizes for the CPU and other internal bus masters are byte, word, and longword. The bus controller has a data alignment function. When accessing external address space, it controls whether the upper data bus (D15 to D8) or lower data bus (D7 to D0) is used, according to the bus specifications for the area being accessed (8-bit access space or 16-bit access space) and the data size. 8-Bit Access Space: Figure 7.14 illustrates data alignment control for the 8-bit access space. With the 8-bit access space, the upper data bus (D15 to D8) is always used for accesses. The amount of data that can be accessed at one time is one byte: a word transfer instruction is performed as twobyte accesses, and a longword transfer instruction, as four-byte accesses.
Upper data bus Lower data bus D15 D8 D7 D0 Byte size 1st bus cycle 2nd bus cycle 1st bus cycle Longword size 2nd bus cycle 3rd bus cycle 4th bus cycle
Word size
Figure 7.14 Access Sizes and Data Alignment Control (8-Bit Access Space) 16-Bit Access Space: Figure 7.15 illustrates data alignment control for the 16-bit access space. With the 16-bit access space, the upper data bus (D15 to D8) and lower data bus (D7 to D0) are used for accesses. The amount of data that can be accessed at one time is one byte or one word, and a longword transfer instruction is performed as two-word accesses. In byte access, whether the upper or lower data bus is used is determined by whether the address is even or odd. The upper data bus is used for an even address, and the lower data bus for an odd address.
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Upper data bus Lower data bus D15 D8 D7 D0 Byte size Byte size Word size Longword size 1st bus cycle 2nd bus cycle * Even address * Odd address
Figure 7.15 Access Sizes and Data Alignment Control (16-Bit Access Space) 7.6.2 Valid Strobes
Table 7.3 shows the data buses used and valid strobes for the access spaces. In read access, the RD signal is valid without discrimination between the upper and lower halves of the data bus. In write access, the HWR signal is valid for the upper half of the data bus, and the LWR signal for the lower half. Table 7.3
Area
Data Buses Used and Valid Strobes
Access Size Read/ Write Read Write Read Address Even Odd Write Even Odd Word Read Write Valid Strobe RD HWR RD RD HWR LWR RD HWR, LWR Upper Data Bus Lower Data Bus (D15 to D8) (D7 to D0) Valid Valid Valid Invalid Valid Hi-Z Valid Valid Invalid Hi-Z Invalid Valid Hi-Z Valid Valid Valid
8-bit access Byte space 16-bit access space Byte
Legend: Hi-Z: High impedance Invalid: Input state; input value is ignored.
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Section 7 Bus Controller
7.6.3
Basic Timing
8-Bit 2-State Access Space: Figure 7.16 shows the bus timing for an 8-bit 2-state access space. When an 8-bit access space is accessed, the upper half (D15 to D8) of the data bus is used. Wait states cannot be inserted.
Bus cycle T1 T2
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Invalid
HWR LWR (16-bit bus mode) LWR (8-bit bus mode)
High
Write
High impedance
D15 to D8
Valid
D7 to D0
High impedance
Note: n = 0 to 7
Figure 7.16 Bus Timing for 8-Bit 2-State Access Space
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Section 7 Bus Controller
8-Bit 3-State Access Space: Figure 7.17 shows the bus timing for an 8-bit 3-state access space. When an 8-bit access space is accessed, the upper half (D15 to D8) of the data bus is used. Wait states can be inserted.
Bus cycle T1 T2 T3
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Invalid
HWR LWR (16-bit bus mode) Write LWR (8-bit bus mode) D15 to D8 High
High impedance
Valid
High impedance
D7 to D0 Note: n = 0 to 7
Figure 7.17 Bus Timing for 8-Bit 3-State Access Space
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Section 7 Bus Controller
16-Bit 2-State Access Space: Figures 7.18 to 7.20 show bus timings for a 16-bit 2-state access space. When a 16-bit access space is accessed, the upper half (D15 to D8) of the data bus is used for an even address, and the lower half (D7 to D0) for an odd address. Wait states cannot be inserted.
Bus cycle T1 T2
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Invalid
HWR
LWR Write D15 to D8
High
Valid
D7 to D0
High impedance
Note: n = 0 to 7
Figure 7.18 Bus Timing for 16-Bit 2-State Access Space (1) (Even Address Byte Access)
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Section 7 Bus Controller
Bus cycle T1 T2
Address bus
CSn
AS
RD
Read
D15 to D8
Invalid
D7 to D0
Valid
HWR
High
LWR Write
High impedance
D15 to D8
D7 to D0
Valid
Note: n = 0 to 7
Figure 7.19 Bus Timing for 16-Bit 2-State Access Space (2) (Odd Address Byte Access)
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Section 7 Bus Controller
Bus cycle T1 T2
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Valid
HWR
LWR Write D15 to D8 Valid
D7 to D0
Valid
Note: n = 0 to 7
Figure 7.20 Bus Timing for 16-Bit 2-State Access Space (3) (Word Access)
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Section 7 Bus Controller
16-Bit 3-State Access Space: Figures 7.21 to 7.23 show bus timings for a 16-bit 3-state access space. When a 16-bit access space is accessed, the upper half (D15 to D8) of the data bus is used for an even address, and the lower half (D7 to D0) for an odd address. Wait states can be inserted.
Bus cycle T1 T2 T3
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Invalid
HWR High
LWR Write D15 to D8
Valid High impedance
D7 to D0
Note: n = 0 to 7
Figure 7.21 Bus Timing for 16-Bit 3-State Access Space (1) (Even Address Byte Access)
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Section 7 Bus Controller
Bus cycle T1 T2 T3
Address bus
CSn
AS
RD
Read
D15 to D8
Invalid
D7 to D0
Valid
HWR
High
LWR Write D15 to D8 High impedance
D7 to D0
Valid
Note: n = 0 to 7
Figure 7.22 Bus Timing for 16-Bit 3-State Access Space (2) (Odd Address Byte Access)
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Section 7 Bus Controller
Bus cycle T1 T2 T3
Address bus
CSn
AS
RD
Read
D15 to D8
Valid
D7 to D0
Valid
HWR
LWR Write D15 to D8 Valid
D7 to D0
Valid
Note: n = 0 to 7
Figure 7.23 Bus Timing for 16-Bit 3-State Access Space (3) (Word Access)
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Section 7 Bus Controller
7.6.4
Wait Control
When accessing external address space, this LSI can extend the bus cycle by inserting one or more wait states (Tw). Program Wait Insertion: From 0 to 3 wait states can be inserted automatically between the T2 state and T3 state on an individual area basis in 3-state access space, according to the settings of WCRH and WCRL. Pin Wait Insertion: Setting the WAITE bit in BCRH to 1 enables wait insertion by means of the WAIT pin. When external address space is accessed in this state, program wait insertion is first carried out according to the settings of WCRH and WCRL. Then, if the WAIT pin is low at the falling edge of in the last T2 or TW state, a TW state is inserted. If the WAIT pin is held low, TW states are inserted until it goes high. Figure 7.24 shows an example of wait state insertion timing.
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Section 7 Bus Controller
By program wait T1 T2 Tw
By the WAIT pin Tw Tw T3
WAIT
Address bus
AS
RD Read Data bus Read data
HWR, LWR Write Data bus Write data
Note: indicates the timing of WAIT pin sampling.
Figure 7.24 Example of Wait State Insertion Timing
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Section 7 Bus Controller
7.7
Burst ROM Interface
With this LSI, external address space of area 0 can be designated as burst ROM space, and burst ROM interfacing can be performed. The burst ROM space interface enables 16-bit configuration ROM with burst access capability to be accessed at high speed. Area 0 can be designated as burst ROM space by means of the BRSTRM bit in BCRH. Consecutive burst accesses of a maximum of 4 words or 8 words can be performed for CPU instruction fetches only. One or two states can be selected for burst access. 7.7.1 Basic Timing
The number of access states in the initial cycle (full access) of the burst ROM interface is in accordance with the setting of the AST0 bit in ASTCR. Also, when the AST0 bit is set to 1, wait states can be inserted. One or two states can be selected for the burst cycle, according to the setting of the BRSTS1 bit in BCRH. Wait states cannot be inserted. When area 0 is designated as burst ROM space, it becomes 16-bit access space regardless of the setting of the ABW0 bit in ABWCR. When the BRSTS0 bit in BCRH is cleared to 0, burst access of up to 4 words is performed; when the BRSTS0 bit is set to 1, burst access of up to 8 words is performed. The basic access timing for burst ROM space is shown in figures 7.25 and 7.26. The timing shown in figure 7.25 is for the case where the AST0 and BRSTS1 bits are both set to 1, and that in figure 7.26 is for the case where both these bits are cleared to 0.
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Section 7 Bus Controller
Full access T1
Burst access T3 T1 T2 T1 T2
T2
Address bus
Only lower address changed
CS0
AS
RD
Data bus
Read data
Read data
Read data
Figure 7.25 Example of Burst ROM Access Timing (When AST0 = BRSTS1 = 1)
Full access T1 T2 Burst access T1 T1
Address bus
Only lower address changed
CS0
AS
RD
Data bus
Read data
Read data Read data
Figure 7.26 Example of Burst ROM Access Timing (When AST0 = BRSTS1 = 0)
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Section 7 Bus Controller
7.7.2
Wait Control
As with the basic bus interface, either program wait insertion or pin wait insertion using the WAIT pin can be used in the initial cycle (full access) of the burst ROM interface. See section 7.6.4, Wait Control. Wait states cannot be inserted in a burst cycle.
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Section 7 Bus Controller
7.8
Idle Cycle
When this LSI accesses external address space, it can insert one-state idle cycle (TI) between bus cycles in the following two cases: (1) when read accesses between different areas occur consecutively, and (2) when a write cycle occurs immediately after a read cycle. By inserting an idle cycle it is possible, for example, to avoid data collisions between ROM, with a long output floating time, and high-speed memory, I/O interfaces, and so on. Consecutive Reads between Different Areas: If consecutive reads between different areas occur while the ICIS1 bit in BCRH is set to 1, an idle cycle is inserted at the start of the second read cycle. Figure 7.27 shows an example of the operation in this case. In this example, bus cycle A is a read cycle from ROM with a long output floating time, and bus cycle B is a read cycle from SRAM, each being located in a different area. In (a), an idle cycle is not inserted, and a collision occurs in cycle B between the read data from ROM and that from SRAM. In (b), an idle cycle is inserted, and a data collision is prevented.
Bus cycle A T1
Bus cycle B T1 T2
Bus cycle A
Bus cycle B
T2
T3
T1
T2
T3
TI
T1
T2
Address bus CS (area A) CS (area B) RD Data bus
Address bus CS (area A) CS (area B) RD Data bus
Data collision
Long output floating time (a) Idle cycle not inserted (ICIS1 = 0)
(b) Idle cycle inserted (Initial value: ICIS1 = 1)
Figure 7.27 Example of Idle Cycle Operation (1)
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Section 7 Bus Controller
Write after Read: If an external write occurs after an external read while the ICIS0 bit in BCRH is set to 1, an idle cycle is inserted at the start of the write cycle. Figure 7.28 shows an example of the operation in this case. In this example, bus cycle A is a read cycle from ROM with a long output floating time, and bus cycle B is a CPU write cycle. In (a), an idle cycle is not inserted, and a collision occurs in cycle B between the read data from ROM and the CPU write data. In (b), an idle cycle is inserted, and a data collision is prevented.
Bus cycle A Bus cycle B Bus cycle A T1
Bus cycle B TI T1 T2
T1
T2
T3
T1
T2
T2
T3
Address bus CS (area A) CS (area B) RD HWR Data bus
Address bus CS (area A) CS (area B) RD HWR Data bus
Data collision
Long output floating time (a) Idle cycle not inserted (ICIS0 = 0)
(b) Idle cycle inserted (Initial value: ICIS0 = 1)
Figure 7.28 Example of Idle Cycle Operation (2)
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Section 7 Bus Controller
Relationship between Chip Select (CS) Signal and Read (RD) Signal: Depending on the system's load conditions, the RD signal may lag behind the CS signal. An example is shown in figure 7.29. In this case, with the setting for no idle cycle insertion (a), there may be a period of overlap between the bus cycle A RD signal and the bus cycle B CS signal. Setting idle cycle insertion, as in (b), however, will prevent any overlap between the RD and CS signals. In the initial state after reset release, idle cycle insertion (b) is set.
Bus cycle A Bus cycle B Bus cycle A T1
Bus cycle B TI T1 T2
T1
T2
T3
T1
T2
T2
T3
Address bus CS (area A) CS (area B) RD
Address bus CS (area A) CS (area B) RD
Possibility of overlap between CS (area B) and RD (a) Idle cycle not inserted (ICIS1 = 0) (b) Idle cycle inserted (Initial value: ICIS1 = 1)
Figure 7.29 Relationship between Chip Select (CS) and Read (RD) Table 7.4 shows the pin states in an idle cycle. Table 7.4
Pins A23 to A0 D15 to D0 CSn AS RD HWR LWR
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Pin States in Idle Cycle
Pin State Contents of next bus cycle High impedance High High High High High
Section 7 Bus Controller
7.9
Bus Release
This LSI can release the external bus in response to a bus mastership request from an external device. In the external bus mastership released state, the internal bus master continues to operate as long as there is no external access. In external extended mode, the bus mastership can be released to an external device by setting the BRLE bit in BCRL to 1. Driving the BREQ pin low issues an external bus mastership request to this LSI. When the BREQ pin is sampled, the BACK pin is driven low at the prescribed timing, and the address bus, data bus, and bus control signals are placed in the high-impedance state, establishing the external bus mastership released state. In the external bus mastership released state, an internal bus master can perform accesses using the internal bus. When an internal bus master wants to make an external access, it temporarily defers activation of the bus cycle, and waits for the bus mastership request from the external bus master to be dropped. When the BREQ pin is driven high, the BACK pin is driven high at the prescribed timing and the external bus mastership released state is terminated. In the event of simultaneous external bus mastership release request and external access request generation, the order of priority is as follows: (High) External bus mastership release > Internal bus master external access (Low) Table 7.5 shows the pin states in the external bus mastership released state. Table 7.5
Pins A23 to A0 D15 to D0 CSn AS RD HWR LWR
Pin States in Bus Mastership Released State
Pin State High impedance High impedance High impedance High impedance High impedance High impedance High impedance
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Section 7 Bus Controller
Figure 7.30 shows the timing for transition to the bus mastership released state.
External bus mastership released state T2 CPU cycle
CPU cycle T0 T1
High impedance Address bus Address High impedance
Data bus
High impedance CSn High impedance
AS
RD
High impedance
HWR, LWR
High impedance
BREQ
BACK
Minimum 1 state [1] [2] [3] [4] [5]
[1] [2] [3] [4] [5]
The low level of the BREQ pin is sampled at the rise of T2 state. The BACK pin is driven low at one state after the end of CPU read cycle, releasing bus mastership to external bus master. The BREQ pin state is still sampled in external bus mastership released state. The high level of the BREQ pin is sampled. The BACK pin is driven high, ending the bus mastership release cycles.
Note : n = 0 to 7
Figure 7.30 Bus Mastership Released State Transition Timing 7.9.1 Usage Note for Bus Mastership Release
When a transition to software standby mode or watch mode is made, external bus mastership release function is aborted. In the state where MSTPCR is set to H'FFFFFF, and a transition to sleep mode is made, external bus mastership release function is aborted. When external bus mastership release function is used in sleep mode, MSTPCR should not be set to H'FFFFFF.
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Section 7 Bus Controller
7.10
Bus Arbitration
This LSI has a bus arbiter that arbitrates bus master operations. There are two bus masters, the CPU and DTC, which perform read/write operations when they have possession of the bus. Each bus master requests the bus mastership by means of a bus request signal. The bus arbiter determines priorities at the prescribed timing, and permits use of the bus by means of a bus mastership request acknowledge signal. The selected bus master then takes possession of the bus mastership and begins its operation. 7.10.1 Operation
The bus arbiter detects the bus masters' bus mastership request signals, and if the bus mastership is requested, sends a bus mastership request acknowledge signal to the bus master. If there are bus mastership requests from more than one bus master, the bus mastership request acknowledge signal is sent to the one with the highest priority. When a bus master receives the bus mastership request acknowledge signal, it takes possession of the bus until that signal is canceled. The order of priority of the bus masters is as follows: (High) DTC > CPU (Low) An internal bus access by an internal bus master, and external bus mastership release, can be executed in parallel. In the event of simultaneous external bus mastership release request, and internal bus master external access request generation, the order of priority is as follows: (High) External bus mastership release > Internal bus master external access (Low) 7.10.2 Bus Mastership Transfer Timing
Even if a bus mastership request is received from a bus master with a higher priority than that of the bus master that has acquired the bus and is currently operating, the bus mastership is not necessarily transferred immediately. There are specific times at which each bus master can relinquish the bus mastership. CPU: The CPU is the lowest-priority bus master, and if a bus mastership request is received from the DTC, the bus arbiter transfers the bus mastership to the bus master that issued the request. The timing for transfer of the bus mastership is as follows:
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Section 7 Bus Controller
* The bus mastership is transferred at a break between bus cycles. However, if a bus cycle is executed in discrete operations, as in the case of a longword-size access, the bus mastership is not transferred between the operations. * If the CPU is in sleep mode, it transfers the bus mastership immediately. DTC: The DTC sends the bus arbiter a request for the bus mastership when an activation request is generated. The DTC can release the bus mastership after a vector read, a register information read (3 states), a single data transfer, or a register information write (3 states). It does not release the bus mastership during a register information read (3 states), a single data transfer, or a register information write (3 states). 7.10.3 Usage Note for External Bus Mastership Release
External bus mastership release can be performed on completion of an external bus cycle. The CS signal remains low until the end of the external bus cycle. Therefore, when external bus mastership release is performed, the CS signal may change from the low level to the highimpedance state.
7.11
Resets and the Bus Controller
In a power-on reset, this LSI, including the bus controller, enters the reset state at that point, and an executing bus cycle is discontinued. In a manual reset, the bus controller's registers and internal state are maintained, and an executing external bus cycle is completed. In this case, WAIT input is ignored and write data is not guaranteed.
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Section 8 Data Transfer Controller (DTC)
Section 8 Data Transfer Controller (DTC)
This LSI includes a data transfer controller (DTC). The DTC can be activated by an interrupt or software, to transfer data. Figure 8.1 shows a block diagram of the DTC. The DTC's register information is stored in on-chip RAM. When the DTC is used, the RAME bit in SYSCR must be set to 1. As 32-bit bus connects the DTC to on-chip RAM (1 kbyte), 32-bit/1state reading and writing of the DTC register information is enabled.
8.1
Features
* Transfer is possible over any number of channels One activation source can trigger a number of data transfers (chain transfer) * Three transfer modes Normal, repeat, and block transfer modes are available * The direct specification of 16-Mbyte address space is possible * Transfer can be set in byte or word units * A CPU interrupt can be requested for the interrupt that activated the DTC * Activation by software is possible * Module stop mode can be set
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Section 8 Data Transfer Controller (DTC)
Internal address bus On-chip RAM
Interrupt controller
DTC
DTCERA to DTCERG, and DTCERI
Control logic
Interrupt request
CPU interrupt request Legend: MRA, MRB: CRA, CRB: SAR: DAR: DTCERA to DTCERG, and DTCERI: DTVECR:
DTC activation request
DTC mode registers A and B DTC transfer count registers A and B DTC source address register DTC destination address register DTC enable registers A to G, and I DTC vector register
Figure 8.1 Block Diagram of DTC
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MRA MRB CRA CRB DAR SAR
Internal data bus
Register information
DTVECR
Section 8 Data Transfer Controller (DTC)
8.2
Register Descriptions
The DTC has the following registers. * * * * * * DTC mode register A (MRA) DTC mode register B (MRB) DTC source address register (SAR) DTC destination address register (DAR) DTC transfer count register A (CRA) DTC transfer count register B (CRB)
These six registers cannot be directly accessed from the CPU. When activated, the DTC reads a set of register information that is stored in on-chip RAM and transfers data to the corresponding DTC registers. After the data transfer, it writes a set of updated register inform ation back to the RAM. * DTC enable registers A to G, and I (DTCERA to DTCERG, and DTCERI) * DTC vector register (DTVECR)
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Section 8 Data Transfer Controller (DTC)
8.2.1
DTC Mode Register A (MRA)
MRA selects the DTC operating mode.
Bit 7 6 Bit Name SM1 SM0 Initial Value R/W Description Source Address Mode 1 and 0 These bits specify an SAR operation after a data transfer. 0X: SAR is fixed 10: SAR is incremented after a transfer (by +1 when Sz = 0; by +2 when Sz = 1) 11: SAR is decremented after a transfer (by -1 when Sz = 0; by -2 when Sz = 1) 5 4 DM1 DM0 Undefined Undefined Destination Address Mode 1 and 0 These bits specify a DAR operation after a data transfer. 0X: DAR is fixed 10: DAR is incremented after a transfer (by +1 when Sz = 0; by +2 when Sz = 1) 11: DAR is decremented after a transfer (by -1 when Sz = 0; by -2 when Sz = 1) 3 2 MD1 MD0 Undefined Undefined DTC Mode 1 and 0 These bits specify the DTC transfer mode. 00: Normal mode 01: Repeat mode 10: Block transfer mode 11: 1 DTS Undefined DTC Transfer Mode Select Specifies whether the source side or the destination side is set to be a repeat area or block area, in repeat mode or block transfer mode. 0: Destination side is repeat area or block area 1: Source side is repeat area or block area
Undefined Undefined
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Section 8 Data Transfer Controller (DTC)
Bit 0
Bit Name Sz
Initial Value
R/W
Description DTC Data Transfer Size Specifies the size of data to be transferred. 0: Byte-size transfer 1: Word-size transfer
Undefined
Legend: X: Don't care
8.2.2
DTC Mode Register B (MRB)
MRB is an 8-bit register that selects the DTC operating mode.
Bit 7 Bit Name CHNE Initial Value R/W Description DTC Chain Transfer Enable This bit specifies a chain transfer. For details, see section 8.5.4, Chain Transfer. In data transfer with CHNE set to 1, determination of the end of the specified number of transfers, clearing of the interrupt source flag, and clearing of DTCER, are not performed. 0: DTC data transfer completed (waiting for start) 1: DTC data transfer (reads new register information and transfers data) 6 DISEL Undefined DTC Interrupt Select This bit specifies whether CPU interrupt is disabled or enabled after a data transfer. 0: Interrupt request is issued to the CPU when the specified data transfer is completed. (The DTC clears the interrupt request flag that causes the activation.) 1: The DTC issues interrupt request to the CPU in every data transfer. (The DTC does not clear the interrupt request flag that causes the activation.) 5 to 0 Undefined Reserved These bits have no effect on the DTC operation. The write value should always be 0.
Undefined
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Section 8 Data Transfer Controller (DTC)
8.2.3
DTC Source Address Register (SAR)
SAR is a 24-bit register that designates the source address of data to be transferred by the DTC. For word-size transfer, specify an even source address. 8.2.4 DTC Destination Address Register (DAR)
DAR is a 24-bit register that designates the destination address of data to be transferred by the DTC. For word-size transfer, specify an even destination address. 8.2.5 DTC Transfer Count Register A (CRA)
CRA is a 16-bit register that designates the number of times that data is transferred by the DTC. In normal mode, the entire CRA functions as a 16-bit transfer counter (1 to 65536). It is decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000. In repeat mode or block transfer mode, the CRA is divided into two parts; the upper 8 bits (CRAH) and the lower 8 bits (CRAL). In repeat mode, CRAH holds the number of transfers while CRAL functions as an 8-bit transfer counter (1 to 256). In block transfer mode, CRAH holds the block size while CRAL functions as an 8-bit block size counter (1 to 256). CRAL is decremented by 1 every time data is transferred, and the contents of CRAH are sent when the count reaches H'00. These operations are repeated. 8.2.6 DTC Transfer Count Register B (CRB)
CRB is a 16-bit register that designates the number of times that data is transferred by the DTC in block transfer mode. It functions as a 16-bit transfer counter (1 to 65536) that is decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000. 8.2.7 DTC Enable Registers A to G, and I (DTCERA to DTCERG, and DTCERI)
DTCER is a set of registers to specify the DTC activation interrupt source, and comprised of eight registers; DTCERA to DTCERG, and DTCERI. The correspondence between interrupt sources and DTCE bits, and vector numbers generated by the interrupt controller are shown in table 8.2. For DTCE bit setting, use bit manipulation instructions such as BSET and BCLR for reading and writing. When multiple activation sources are to be set at one time, only at the initial setting, writing data is enabled after executing a dummy read on the relevant register with all the interrupts being masked.
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Section 8 Data Transfer Controller (DTC)
Bit 7 6 5 4 3 2 1 0
Bit Name DTCEn7 DTCEn6 DTCEn5 DTCEn4 DTCEn3 DTCEn2 DTCEn1 DTCEn0
Initial Value 0 0 0 0 0 0 0 0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Description DTC Activation Enable 1: Disables an interrupt for DTC activation. 0: Specifies a relevant interrupt source as a DTC activation source. [Clearing conditions] * When the DISEL bit in MRB is 1 and the data transfer has ended * When the specified number of transfers have ended [Retaining condition] * When the DISEL bit is 0 and the specified number of transfers have not been completed
(n = A to G, and I)
8.2.8
DTC Vector Register (DTVECR)
DTVECR is an 8-bit readable/writable register that enables or disables DTC activation by software, and sets a vector number for the software activation interrupt.
Bit 7 Bit Name SWDTE Initial Value 0 R/W R/W Description DTC Software Activation Enable Enables or disables the DTC software activation. 0: Disables the DTC software activation. 1: Enables the DTC software activation. [Clearing conditions] * When the DISEL bit is 0 and the specified number of transfers have not ended * When 0 is written after a software-activated data transfer end interrupt (SWDTEND) request has been sent to the CPU [Retaining conditions] * When the DISEL bit is 1 and data transfer has ended * When the specified number of transfers have ended * When the software-activated data transfer is in process
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Section 8 Data Transfer Controller (DTC)
Bit 6 5 4 3 2 1 0
Bit Name DTVEC6 DTVEC5 DTVEC4 DTVEC3 DTVEC2 DTVEC1 DTVEC0
Initial Value 0 0 0 0 0 0 0
R/W R/W R/W R/W R/W R/W R/W R/W
Description DTC Software Activation Vector 6 to 0 These bits specify a vector number for the DTC software activation. The vector address is expressed as H'0400 + (vector number x 2). For example, when DTVEC6 to DTVEC0 = H'10, the vector address is H'0420. These bits are writable when SWDTE = 0.
8.3
Activation Sources
The DTC operates when activated by an interrupt request or by a write to DTVECR by software. An activation interrupt request is specified by DTCER. When the corresponding bit is set to 1, it becomes DTC activation source and when it is cleared to 0, it becomes CPU interrupt source. At the end of a data transfer (or the last consecutive transfer in the case of chain transfer), the interrupt flag of activation source or corresponding DTCER bit is cleared. Table 8.1 shows the relationship between the activation source and DTCER clearing. The activation source flag, in the case of RXI0, for example, is the RDRF flag in SCI_0. Since there are a number of DTC activation sources, transferring the last byte (or word) does not clear the flag of its activation source. Take appropriate steps at each interrupt processing. When an interrupt has been designated as a DTC activation source, the existing CPU mask level and interrupt controller priorities have no effect. If there are more than one activation sources at the same time, the DTC operates in accordance with the default priority of the interrupt sources. Figure 8.2 shows a block diagram of the DTC activation source control. For details, see section 5, Interrupt Controller.
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Section 8 Data Transfer Controller (DTC)
Table 8.1
Activation Source and DTCER Clearing
The DISEL Bit is 0, and Transfer Counts Specified have not Ended * The SWDTE bit is cleared to 0 The DISEL Bit is 1, or Transfer Counts Specified have Ended * The SWDTE bit retains 1 * The interrupt request is sent to the CPU
Activation Source Software activation
Interrupt activation
* The corresponding DTCER bit retains 1 * The activation source flag is cleared to 0
* The corresponding DTCER bit is cleared to 0 * The activation source flag retains 1 * The interrupt request which becomes an activation source is sent to the CPU
Source flag cleared Clear controller Clear DTCER Select Clear request
IRQ interrupt
Interrupt request
Selection circuit
On-chip peripheral module
DTC
DTVECR
Interrupt controller Interrupt mask
CPU
Figure 8.2 Block Diagram of DTC Activation Source Control
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Section 8 Data Transfer Controller (DTC)
8.4
Location of Register Information and DTC Vector Table
Locate the register information in on-chip RAM (addresses: H'FFEBC0 to H'FFEFBF). Register information should be located at an address that is a multiple of four within the range. Locating the register information in address space is shown in figure 8.3. Locate the MRA, SAR, MRB, DAR, CRA, and CRB registers, in that order, from the start address of the register information. In the case of chain transfer, register information should be located in consecutive areas as shown in figure 8.3, and the register information start address should be located at the vector address corresponding to the interrupt source. Figure 8.4 shows the correspondence between the DTC vector address and register information. The DTC reads the start address of the register information from the vector address set for each activation source, and then reads the register information from that start address. When the DTC is activated by software, the vector address is obtained from: H'0400 + (DTVECR[6:0] x 2). For example, if DTVECR is H'10, the vector address is H'0420. The configuration of the vector address is the same in both normal* and advanced modes, a 2-byte unit being used in both cases. These two bytes specify the lower bits of the register information start address. Note: Normal mode is not supported in this LSI.
Lower address 0 Register information start address MRA MRB Chain transfer CRA MRA MRB CRA SAR DAR CRB Register information for 2nd transfer in chain transfer 1 2 SAR DAR CRB Register information 3
4 bytes
Figure 8.3 Location of DTC Register Information in Address Space
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Section 8 Data Transfer Controller (DTC)
DTC vector address
Register information start address
Register information
Chain transfer
Figure 8.4 Correspondence between DTC Vector Address and Register Information
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Section 8 Data Transfer Controller (DTC)
Table 8.2
Interrupt Source Software External pin
Interrupt Sources, DTC Vector Addresses, and Corresponding DTCEs
Origin of Interrupt Source Write to DTVECR IRQ0 IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 Vector Number DTVECR 16 17 18 19 20 21 22 23 28 32 33 34 35 40 41 44 45 48 49 50 51 56 57 60 61 64 65 DTC Vector Address H'0400 + (vector number x 2) H'0420 H'0422 H'0424 H'0426 H'0428 H'042A H'042C H'042E H'0438 H'0440 H'0442 H'0444 H'0446 H'0450 H'0452 H'0458 H'045A H'0460 H'0462 H'0464 H'0466 H'0470 H'0472 H'0478 H'047A H'0480 H'0482 DTCE* DTCEA7 DTCEA6 DTCEA5 DTCEA4 DTCEA3 DTCEA2 DTCEA1 DTCEA0 DTCEB6 DTCEB5 DTCEB4 DTCEB3 DTCEB2 DTCEB1 DTCEB0 DTCEC7 DTCEC6 DTCEC5 DTCEC4 DTCEC3 DTCEC2 DTCEC1 DTCEC0 DTCED5 DTCED4 DTCED3 DTCED2 Low Priority High
A/D converter ADI (A/D conversion end) TPU channel 0 TGI0A TGI0B TGI0C TGI0D TPU channel 1 TPU channel 2 TPU channel 3 TGI1A TGI1B TGI2A TGI2B TGI3A TGI3B TGI3C TGI3D TPU channel 4 TPU channel 5 8-bit timer channel 0 TGI4A TGI4B TGI5A TGI5B CMIA0 CMIB0
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Section 8 Data Transfer Controller (DTC)
Interrupt Source 8-bit timer channel 1 SCI channel 0 SCI channel 1 SCI channel 2 8-bit timer channel 2 8-bit timer channel 3 IEB (H8S/2552 Group only) HCAN (H8S/2556 Group only) SCI channel 3 SCI channel 4 Note: *
Origin of Interrupt Source CMIA1 CMIB1 RXI0 TXI0 RXI1 TXI1 RXI2 TXI2 CMIA2 CMIB2 CMIA3 CMIB3 IERxl IETxl RM0
Vector Number 68 69 81 82 85 86 89 90 92 93 96 97 105 106 109
DTC Vector Address H'0488 H'048A H'04A2 H'04A4 H'04AA H'04AC H'04B2 H'04B4 H'04B8 H'04BA H'04C0 H'04C2 H'04D2 H'04D4 H'04DA
DTCE* DTCED1 DTCED0 DTCEE3 DTCEE2 DTCEE1 DTCEE0 DTCEF7 DTCEF6 DTCEF5 DTCEF4 DTCEF3 DTCEF2 DTCEG6 DTCEG5 DTCEG2
Priority High
RXI3 TXI3 RXI4 TXI4
121 122 125 126
H'04F2 H'04F4 H'04FA H'04FC
DTCEI7 DTCEI6 DTCEI5 DTCEI4 Low
The DTCE bits with no corresponding interrupt are reserved, and should be written with 0.
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Section 8 Data Transfer Controller (DTC)
8.5
Operation
Register information is stored in on-chip RAM. When activated, the DTC reads register information in on-chip RAM and transfers data. After the data transfer, the DTC writes updated register information back to on-chip RAM. The pre-storage of register information in on-chip RAM makes it possible to transfer data over any required number of channels. The transfer mode can be specified as normal, repeat, or block transfer mode. Setting the CHNE bit in MRB to 1 makes it possible to perform a number of transfers with a single activation source (chain transfer). The 24-bit SAR designates the DTC transfer source address, and the 24-bit DAR designates the transfer destination address. After each transfer, SAR and DAR are independently incremented, decremented, or left fixed depending on its register information. Figure 8.5 shows the flowchart of DTC operation.
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Section 8 Data Transfer Controller (DTC)
Start
Read DTC vector Next transfer
Read register information
Data transfer
Write register information
CHNE = 1 No
Yes
Transfer counter = 0 or DISEL = 1 No Clear an activation source flag
Yes
Clear DTCER
End
Interrupt exception handling
*
Note: * For details, see the section related to each peripheral module.
Figure 8.5 Flowchart of DTC Operation 8.5.1 Normal Mode
In normal mode, one operation transfers one byte or one word of data. From 1 to 65,536 transfers can be specified. Once the specified number of transfers have been completed, a CPU interrupt can be requested. Table 8.3 lists the register function in normal mode. Figure 8.6 shows the memory mapping in normal mode.
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Section 8 Data Transfer Controller (DTC)
Table 8.3
Name
Register Function in Normal Mode
Abbreviation SAR DAR CRA CRB Function Designates transfer source address Designates transfer destination address Designates transfer count Not used
DTC source address register DTC destination address register DTC transfer count register A DTC transfer count register B
SAR Transfer
DAR
Figure 8.6 Memory Mapping in Normal Mode 8.5.2 Repeat Mode
In repeat mode, one operation transfers one byte or one word of data. From 1 to 256 transfers can be specified. Once the specified number of transfers have ended, the initial state of the transfer counter and the address register specified as the repeat area is restored, and transfer is repeated. In repeat mode, the transfer counter value does not reach H'00, and therefore CPU interrupts cannot be requested when DISEL = 0. Table 8.4 lists the register function in repeat mode. Figure 8.7 shows the memory mapping in repeat mode.
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Section 8 Data Transfer Controller (DTC)
Table 8.4
Name
Register Function in Repeat Mode
Abbreviation SAR DAR CRAH CRAL CRB Function Designates transfer source address Designates transfer destination address Holds number of transfers Designates transfer count Not used
DTC source address register DTC destination address register DTC transfer count register AH DTC transfer count register AL DTC transfer count register B
SAR or DAR
Repeat area Transfer
DAR or SAR
Figure 8.7 Memory Mapping in Repeat Mode 8.5.3 Block Transfer Mode
In block transfer mode, one operation transfers one block of data. Either the transfer source or the transfer destination is designated as a block area. The block size can be between 1 to 256. When the transfer of one block ends, the initial state of the block size counter and the address register specified as the block area is restored. The other address register is then incremented, decremented, or left fixed depending on its register information. From 1 to 65,536 transfers can be specified. Once the specified numbers of transfers have been completed, a CPU interrupt is requested.
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Section 8 Data Transfer Controller (DTC)
Table 8.5 lists the register function in block transfer mode. Figure 8.8 shows the memory mapping in block transfer mode. Table 8.5
Name DTC source address register DTC destination address register DTC transfer count register AH DTC transfer count register AL DTC transfer count register B
Register Function in Block Transfer Mode
Abbreviation SAR DAR CRAH CRAL CRB Function Designates transfer source address Designates transfer destination address Holds block size Designates block size count Designates transfer count
First block
SAR or DAR
. . .
Block area Transfer
DAR or SAR
Nth block
Figure 8.8 Memory Mapping in Block Transfer Mode
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Section 8 Data Transfer Controller (DTC)
8.5.4
Chain Transfer
Setting the CHNE bit in MRB to 1 enables a number of data transfers to be performed consecutively in response to a single transfer request. SAR, DAR, CRA, CRB, MRA, and MRB, which define data transfers, can be set independently. Figure 8.9 shows the memory map for chain transfer. When activated, the DTC reads the register information start address stored at the vector address, which corresponds to the activation request, and then reads the first register information at that start address. After the data transfer, the CHNE bit will be tested. When it has been set to 1, the DTC reads the next register information located in a consecutive area and performs the data transfer. These sequences are repeated until the CHNE bit is cleared to 0. In the case of transfer with CHNE set to 1, an interrupt request to the CPU is not generated at the end of the specified number of transfers or by setting of the DISEL bit to 1, and the interrupt request flag for the activation source is not affected.
Source
Destination
Register information CHNE = 1
DTC vector address
Register information start address
Register information CHNE = 0
Source
Destination
Figure 8.9 Chain Transfer Operation
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Section 8 Data Transfer Controller (DTC)
8.5.5
Interrupts
An interrupt request is issued to the CPU when the DTC has completed the specified number of data transfers, or a data transfer for which the DISEL bit was set to 1. In the case of interrupt activation, the interrupt set as the activation source is generated. These interrupts to the CPU are subject to CPU mask level and interrupt controller priority level control. In the case of software activation, a software-activated data transfer end interrupt (SWDTEND) is generated. When the DISEL bit is 1 and one data transfer has been completed, or the specified number of transfers have been completed, the SWDTE bit is held at 1 and an SWDTEND interrupt is generated after the end of data transfer. The interrupt handling routine will then clear the SWDTE bit to 0. When the DTC is activated by software, an SWDTEND interrupt is not generated during a data transfer wait or during data transfer even if the SWDTE bit is set to 1. 8.5.6 Operation Timing
Figures 8.10 to 8.12 show the DTC operation timing.
DTC activation request DTC request Data transfer
Read Write
Vector read Address
Transfer information read
Transfer information write
Figure 8.10 DTC Operation Timing (Example in Normal Mode or Repeat Mode)
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Section 8 Data Transfer Controller (DTC)
DTC activation request DTC request Vector read Address Data transfer
Read Write Read Write
Transfer information read
Transfer information write
Figure 8.11 DTC Operation Timing (Example in Block Transfer Mode, with Block Size of 2)
DTC activation request DTC request Vector read Address
Read Write Read Write
Data transfer
Data transfer
Transfer information read
Transfer information write
Transfer information read
Transfer information write
Figure 8.12 DTC Operation Timing (Example of Chain Transfer) 8.5.7 Number of DTC Execution States
Table 8.6 lists execution status for a single DTC data transfer, and table 8.7 lists the number of states required for each execution status.
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Section 8 Data Transfer Controller (DTC)
Table 8.6
DTC Execution Status
Vector Read I 1 1 1 Register Information Read/Write Data Read J K 6 6 6 1 1 N Data Write L 1 1 N Internal Operations M 3 3 3
Mode Normal Repeat Block transfer
Legend: N: Block size (initial setting of CRAH and CRAL)
Table 8.7
Number of States Required for Each Execution Status
Internal I/O Registers OnChip RAM 32 1 OnChip ROM 16 1 1 1 1 1 1 1 Other than IEB 2 HCAN* and HCAN External Devices 16 5 5 5 5 5 1 8 2 2 4 2 4 1 16 2 2 2 2 2 1 8 2 4 2 4 2 4 1 8 3 16 2 16 3 3+m 3+m 3+m 3+m 3+m 1
Object to be Accessed Bus width Access states
IEB* 8 4 4 4 1
1
Execution Vector read SI Status Register information 1 read/write SJ Byte data read SK Word data read SK Byte data write SL Word data write SL 1 1 1 1
6 + 2m 2 3+m 2
6 + 2m 2 3+m 2
6 + 2m 2 1 1
Internal operation SM 1
Legend: m: The number of wait states for accessing external devices. Notes: 1. H8S/2552 Group only. 2. H8S/2556 Group only.
The number of execution states is calculated from using the formula below. Note that is the sum of all transfers activated by one activation source (the number in which the CHNE bit is set to 1, plus 1). Number of execution states = I * SI + (J * SJ + K * SK + L * SL) + M * SM
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Section 8 Data Transfer Controller (DTC)
For example, when the DTC vector address is located in on-chip ROM, normal mode is set, and data is transferred from on-chip ROM to an internal I/O register, the time required for the DTC operation is 13 states. The time from activation to the end of the data write is 10 states.
8.6
8.6.1
Procedures for Using DTC
Activation by Interrupt
The procedure for using the DTC with interrupt activation is as follows: 1. 2. 3. 4. 5. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM. Set the start address of the register information in the DTC vector address. Set the corresponding bit in DTCER to 1. Set the enable bits for the interrupt sources to be used as the activation sources to 1. The DTC is activated when an interrupt used as an activation source is generated. After one data transfer has been completed, or after the specified number of data transfers has been completed, the DTCE bit is cleared to 0 and a CPU interrupt is requested. If the DTC is to continue transferring data, set the DTCE bit to 1. Activation by Software
8.6.2
The procedure for using the DTC with software activation is as follows: 1. 2. 3. 4. 5. 6. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM. Set the start address of the register information in the DTC vector address. Check that the SWDTE bit is 0. Write 1 to SWDTE bit and the vector number to DTVECR. Check the vector number written to DTVECR. After one data transfer has been completed, if the DISEL bit is 0 and a CPU interrupt is not requested, the SWDTE bit is cleared to 0. If the DTC is to continue transferring data, set the SWDTE bit to 1. When the DISEL bit is 1, or after the specified number of data transfers has been completed, the SWDTE bit is held at 1 and a CPU interrupt is requested.
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Section 8 Data Transfer Controller (DTC)
8.7
8.7.1
Examples of Use of the DTC
Normal Mode
An example is shown in which the DTC is used to receive 128 bytes of data via the SCI. 1. MRA sets the source address fixed (SM1 = SM0 = 0), destination address increment (DM1 = 1, DM0 = 0), normal mode (MD1 = MD0 = 0), and byte size (Sz = 0). The DTS bit can be set to any value. MRB performs one data transfer by one interrupt (CHNE = 0, DISEL = 0). SAR sets the RDR address in SCI, DAR sets the start address of the RAM area where the data will be received in, and CRA sets 128 (H'0080). CRB can be set to any value. Set the start address of the register information in the DTC vector address. Set the corresponding bit in DTCER to 1. Set the SCI to the appropriate receive mode. Set the RIE bit in SCR to 1 to enable the reception complete (RXI) interrupt. Since the generation of a receive error during the SCI reception operation will disable subsequent reception, the CPU should be enabled to accept receive error interrupts. Each time the reception of one byte of data has been completed on the SCI, the RDRF flag in SSR is set to 1, an RXI interrupt is generated, and the DTC is activated. The receive data is transferred from RDR to RAM by the DTC. DAR is incremented and CRA is decremented. The RDRF flag is automatically cleared to 0. When CRA becomes 0 after the 128 data transfers have been completed, the RDRF flag is held at 1, the DTCE bit is cleared to 0, and an RXI interrupt request is sent to the CPU. The interrupt handling routine will perform wrap-up processing. Software Activation
2. 3. 4.
5.
6.
8.7.2
An example is shown in which the DTC is used to transfer a block of 128 bytes of data by means of software activation. The transfer source address is H'1000 and the transfer destination address is H'2000. The vector number is H'60, so the vector address is H'04C0. 1. MRA sets the source address increment (SM1 = 1, SM0 = 0), destination address increment (DM1 = 1, DM0 = 0), block transfer mode (MD1 = 1, MD0 = 0), and byte size (Sz = 0). The DTS bit can be set to any value. MRB performs one block transfer by one interrupt (CHNE = 0). SAR sets the transfer source address (H'1000), DAR sets the transfer destination address (H'2000), and CRA sets 128 (H'8080). CRB sets 1 (H'0001). Set the start address of the register information at the DTC vector address (H'04C0).
2.
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Section 8 Data Transfer Controller (DTC)
3. 4. 5.
6. 7.
Check that the SWDTE bit in DTVECR is 0. Check that there is currently no transfer activated by software. Write 1 to the SWDTE bit and the vector number (H'60) to DTVECR. The write data is H'E0. Read DTVECR again and check that it is set to the vector number (H'60). If it is not, this indicates that the write has failed. This is presumably because an interrupt occurred between steps 3 and 4 and led to a different software activation. To activate this transfer, go back to step 3. If the write was successful, the DTC is activated and a block of 128 bytes of data is transferred. After the transfer, an SWDTEND interrupt occurs. The interrupt handling routine should clear the SWDTE bit to 0 and perform other wrap-up processing.
8.8
8.8.1
Usage Notes
Module Stop Mode Setting
The DTC operation can be disabled or enabled using the module stop control register. The initial setting is for the DTC operation to be enabled. Register access is disabled by setting module stop mode. Module stop mode cannot be set during the DTC operation. For details, see section 22, Power-Down Modes. 8.8.2 On-Chip RAM
The MRA, MRB, SAR, DAR, CRA, and CRB registers are all located in on-chip RAM. When the DTC is used, the RAME bit in SYSCR should not be cleared to 0. 8.8.3 DTCE Bit Setting
For DTCE bit setting, use bit manipulation instructions such as BSET and BCLR for reading and writing. When multiple activation sources are to be set at one time, only at the initial setting, writing data is enabled after executing a dummy read on the relevant register with all the interrupts being masked.
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Section 8 Data Transfer Controller (DTC)
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Section 9 I/O Ports
Section 9 I/O Ports
Table 9.1 summarizes the port functions. The pins of each port also have other functions such as input/output or interrupt input pins of on-chip peripheral modules. Each I/O port includes a data direction register (DDR) that controls input/output, a data register (DR) that stores output data, and a port register (PORT) used to read the pin states. The input-only ports do not have DDR and DR registers. Ports A to E have a built-in input pull-up MOS function and an input pull-up MOS control register (PCR) to control the on/off state of the input pull-up MOS. Ports 3 and A include an open-drain control register (ODR) that controls the on/off state of the output buffer PMOS. All the I/O ports can drive a single TTL load and a 30 pF capacitive load. The P34 and P35 pins on port 3 are NMOS push pull outputs. The IRQ pin is a schmitt trigger input.
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Section 9 I/O Ports
Table 9.1
Port
Port Functions
Mode 6 P17/TIOCB2/TCLKD P16/TIOCA2/IRQ1 P15/TIOCB1/TCLKC P14/TIOCA1/IRQ0 P13/TIOCD0/TCLKB P12/TIOCC0/TCLKA P11/TIOCB0 P10/TIOCA0 Mode 7 Input/Output and Output Type Schmitt trigger input (IRQ1, IRQ0)
Description
Port 1 General I/O port also functioning as TPU I/O pins and interrupt input pins
Port 2 General I/O port P27/TIOCB5 also functioning P26/TIOCA5 as TPU I/O pins P25/TIOCB4 P24/TIOCA4 P23/TIOCD3 P22/TIOCC3 P21/TIOCB3 P20/TIOCA3 Port 3 General I/O port also functioning 2 as I C bus interface 2 I/O pins, SCI I/O pins, and interrupt input pins P37/TxD4 P36/RxD4 P35/SCK1/SCK4/SCL0/IRQ5 P34/RxD1/SDA0 P33/TxD1/SCL1 P32/SCK0/SDA1/IRQ4 P31/RxD0 P30/TxD0 Open drain output enabled Schmitt trigger input (IRQ5, IRQ4) NMOS push-pull output (P35, P34, SCK1, SCK4)
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Section 9 I/O Ports
Port Port 4
Description General input port also functioning as A/D converter analog input pins
Mode 6 P47/AN7 P46/AN6 P45/AN5 P44/AN4 P43/AN3 P42/AN2 P41/AN1 P40/AN0
Mode 7
Input/Output and Output Type
Port 5
General I/O port P52/SCK2 also functioning P51/RxD2 as SCI I/O pins P50/TxD2 General I/O port also functioning as SCI I/O pins, TMR I/O pins, bus control output pins, and manual reset input pins P77/TxD3 P76/RxD3 P75/TMO3/SCK3 P74/TMO2/MRES P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/TMCI23/CS5 P70/TMRI01/TMCI01/CS4 P73/TMO1 P72/TMO0 P71/TMRI23/TMCI23 P70/TMRI0/TMCI01
Port 7
Port 9
General input port also functioning as A/D converter analog input and D/A converter analog output pins
P97/AN15/DA1 P96/AN14/DA0 P95/AN13 P94/AN12 P93/AN11 P92/AN10 P91/AN9 P90/AN8
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Section 9 I/O Ports
Port
Description
Mode 6
Mode 7 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0
Input/Output and Output Type Built-in input pullup MOS Open drain output enabled
Port A General I/O port PA7/A23 also functioning PA6/A22 as address PA5/A21 output pins PA4/A20 PA3/A19 PA2/A18 PA1/A17 PA0/A16 Port B General I/O port PB7/A15 also functioning PB6/A14 as address PB5/A13 output pins PB4/A12 PB3/A11 PB2/A10 PB1/A9 PB0/A8 Port C General I/O port PC7/A7 also functioning PC6/A6 as address PC5/A5 output pins PC4/A4 PC3/A3 PC2/A2 PC1/A1 PC0/A0 Port D General I/O port D15 also functioning D14 as data I/O pins D13 D12 D11 D10 D9 D8
Built-in input pullup MOS
Built-in input pullup MOS
Built-in input pullup MOS
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Section 9 I/O Ports
Port
Description
Mode 6
Mode 7 PE7 PE6 PE5 PE4 PE3 PE2 PE1 PE0 PF7/ PF6 PF5 PF4 PF3/ADTRG/IRQ3 PF2 PF1/BUZZ PF0/IRQ2 PG4
2
Input/Output and Output Type Built-in input pullup MOS
Port E General I/O port PE7/D7 also functioning PE6/D6 as data I/O pins PE5/D5 PE4/D4 PE3/D3 PE2/D2 PE1/D1 PE0/D0 Port F General I/O port also functioning as system clock output pins, interrupt input pins, bus control I/O pins, A/D converter input pins, and BUZZ output pins PF7/ AS RD HWR PF3/LWR/ADTRG/IRQ3 PF2/WAIT PF1/BACK/BUZZ PF0/BREQ/IRQ2 PG4/CS0 PG3/Rx* /CS1* PG2/Tx* /CS2* PG1/CS3/IRQ7 PG0/IRQ6
1 1 2
Schmitt trigger input (IRQ3, IRQ2)
Port G General I/O port also functioning as bus control output pins, interrupt input pins, and IEB 1 I/O pins*
PG3/Rx* * PG2/Tx* * PG1/IRQ7 PG0/IRQ6
1
1
2
2
Schmitt trigger input (IRQ7, IRQ6)
Port H General I/O port PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
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Section 9 I/O Ports
Port Port J
Description
Mode 6
Mode 7
Input/Output and Output Type
General I/O port PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0
Notes: 1. The Rx and Tx of IEB are valid only in the H8S/2552 Group. 2. The PG3/Rx/CS1 and PG2/Tx/CS2 pins are not available in the H8S/2556 Group.
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Section 9 I/O Ports
9.1
Port 1
Port 1 is an 8-bit I/O port and has the following registers. * Port 1 data direction register (P1DDR) * Port 1 data register (P1DR) * Port 1 register (PORT1) 9.1.1 Port 1 Data Direction Register (P1DDR)
P1DDR specifies input or output of the port 1 pins using the individual bits. P1DDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name P17DDR P16DDR P15DDR P14DDR P13DDR P12DDR P11DDR P10DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 1 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.1.2
Port 1 Data Register (P1DR)
P1DR stores output data for port 1 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P17DR P16DR P15DR P14DR P13DR P12DR P11DR P10DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.1.3
Port 1 Register (PORT1)
PORT1 shows port 1 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name P17 P16 P15 P14 P13 P12 P11 P10 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 1 read is performed while P1DDR bits are set to 1, the P1DR values are read. If a port 1 read is performed while P1DDR bits are cleared to 0, the pin states are read.
Determined by the states of pins P17 to P10.
9.1.4
Pin Functions
Port 1 pins also function as TPU I/O pins and interrupt input pins. Port 1 pin functions are shown below.
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Section 9 I/O Ports
* P17/TIOCB2/TCLKD The pin function is switched as shown below according to the combination of the TPU channel 2 setting, the TPSC2 to TPSC0 bits in TCR_0 or TCR_5, and the P17DDR bit.
TPU Channel 2 Setting*1 P17DDR Pin function Output TIOCB2 output 0 P17 input TCLKD input*3 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB2 input when TPU channel 2 timer operating mode is set to normal operation or phase counting mode and IOB3 in TIOR_2 is set to 1. 3. This pin functions as TCLKD input when TPSC2 to TPSC0 in TCR_0 or TCR_5 are set to 111. This pin also functions as TCLKD input when channel 2 or 4 is set to phase counting mode. TIOCB2 input*2 Input or Initial Value 1 P17 output
* P16/TIOCA2/IRQ1 The pin function is switched as shown below according to the combination of the TPU channel 2 setting and the P16DDR bit.
TPU Channel 2 Setting*1 P16DDR Pin function Output TIOCA2 output 0 P16 input IRQ1 input*3 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA2 input when TPU channel 2 timer operating mode is set to normal operation or phase counting mode and IOA3 in TIOR_2 is set to 1. 3. When this pin is used as an external interrupt pin, do not specify other functions. TIOCA2 input*2 Input or Initial Value 1 P16 output
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Section 9 I/O Ports
* P15/TIOCB1/TCLKC The pin function is switched as shown below according to the combination of the TPU channel 1 setting, the TPSC2 to TPSC0 bits in TCR_0, TCR_2, TCR_4, or TCR_5, and the P15DDR bit.
TPU Channel 1 Setting* P15DDR Pin function
1
Output TIOCB1 output 0
Input or Initial Value 1 P15 output
1 2
P15 input
TIOCB1 input* TCLKC input*
Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB1 input when TPU channel 1 timer operating mode is set to normal operation or phase counting mode and IOB3 to IOB0 in TIOR_1 are set to 10xx. 3. This pin functions as TCLKC input when TPSC2 to TPSC0 in TCR_0 or TCR_2 are set to 110, or when TPSC2 to TPSC0 in TCR_4 or TCR_5 are set to 101. This pin also functions as TCLKC input when channel 2 or 4 is set to phase counting mode.
* P14/TIOCA1/IRQ0 The pin function is switched as shown below according to the combination of the TPU channel 1 setting and the P14DDR bit.
TPU Channel 1 Setting* P14DDR Pin function
1
Output TIOCA1 output 0
Input or Initial Value 1 P14 output
2 3
P14 input IRQ0 input*
TIOCA1 input*
Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA1 input when TPU channel 1 timer operating mode is set to normal operation or phase counting mode and IOA3 to IOA0 in TIOR_1 are set to 10xx. 3. When this pin is used as an external interrupt pin, do not specify other functions.
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Section 9 I/O Ports
* P13/TIOCD0/TCLKB The pin function is switched as shown below according to the combination of the TPU channel 0 setting, the TPSC2 to TPSC0 bits in TCR_0, TCR_1, or TCR_2, and the P13DDR bit.
TPU Channel 0 Setting*1 P13DDR Pin function Output TIOCD0 output 0 P13 input TCLKB input*3 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCD0 input when TPU channel 0 timer operating mode is set to normal operation and IOD3 to IOD0 in TIORL_0 are set to 10xx. 3. This pin functions as TCLKB input when TPSC2 to TPSC0 are set to 101 in any of TCR_0, TCR_1, and TCR_2. This pin also functions as TCLKB input when channel 1 or 5 is set to phase counting mode. TIOCD0 input*2 Input or Initial Value 1 P13 output
* P12/TIOCC0/TCLKA The pin function is switched as shown below according to the combination of the TPU channel 0 setting, the TPSC2 to TPSC0 bits in TCR_0, TCR_1, TCR_2, TCR_3, TCR_4, or TCR_5, and the P12DDR bit.
TPU Channel 0 Setting* P12DDR Pin function
1
Output TIOCC0 output 0
Input or Initial Value 1 P12 output
2 3
P12 input
TIOCC0 input* TCLKA input*
Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCC0 input when TPU channel 0 timer operating mode is set to normal operation and IOC3 to IOC0 in TIORL_0 are set to 10xx. 3. This pin functions as TCLKA input when TPSC2 to TPSC0 are set to 100 in any of TCR_0, TCR_1, TCR_2, TCR_3, TCR_4, and TCR_5. This pin also functions as TCLKA input when channel 1 or 5 is set to phase counting mode.
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Section 9 I/O Ports
* P11/TIOCB0 The pin function is switched as shown below according to the combination of the TPU channel 0 setting and the P11DDR bit.
TPU Channel 0 Setting*1 P11DDR Pin function Output TIOCB0 output 0 P11 input TIOCB0 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB0 input when TPU channel 0 timer operating mode is set to normal operation and IOB3 to IOB0 in TIORH_0 are set to 10xx. Input or Initial Value 1 P11 output
* P10/TIOCA0 The pin function is switched as shown below according to the combination of the TPU channel 0 setting and the P10DDR bit.
TPU Channel 0 Setting*1 P10DDR Pin function Output Input or Initial Value 0 P10 input TIOCA0 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA0 input when TPU channel 0 timer operating mode is set to normal operation and IOA3 to IOA0 in TIORH_0 are set to 10xx. 1 P10 output
TIOCA0 output
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Section 9 I/O Ports
9.2
Port 2
Port 2 is an 8-bit I/O port and has the following registers. * Port 2 data direction register (P2DDR) * Port 2 data register (P2DR) * Port 2 register (PORT2) 9.2.1 Port 2 Data Direction Register (P2DDR)
P2DDR specifies input or output of the port 2 pins using the individual bits. P2DDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name P27DDR P26DDR P25DDR P24DDR P23DDR P22DDR P21DDR P20DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 2 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.2.2
Port 2 Data Register (P2DR)
P2DR stores output data for port 2 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P27DR P26DR P25DR P24DR P23DR P22DR P21DR P20DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.2.3
Port 2 Register (PORT2)
PORT2 shows port 2 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name P27 P26 P25 P24 P23 P22 P21 P20 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 2 read is performed while P2DDR bits are set to 1, the P2DR values are read. If a port 2 read is performed while P2DDR bits are cleared to 0, the pin states are read.
Determined by the states of pins P27 to P20.
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Section 9 I/O Ports
9.2.4
Pin Functions
Port 2 pins also function as TPU I/O pins. Port 2 pin functions are shown below. * P27/TIOCB5 The pin function is switched as shown below according to the combination of the TPU channel 5 setting and the P27DDR bit.
TPU Channel 5 Setting*1 P27DDR Pin function Output Input or Initial Value 0 P27 input TIOCB5 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB5 input when TPU channel 5 timer operating mode is set to normal operation or phase counting mode and IOB3 in TIOR_5 is set to 1. 1 P27 output
TIOCB5 output
* P26/TIOCA5 The pin function is switched as shown below according to the combination of the TPU channel 5 setting and the P26DDR bit.
TPU Channel 5 Setting*1 P26DDR Pin function Output Input or Initial Value 0 P26 input TIOCA5 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA5 input when TPU channel 5 timer operating mode is set to normal operation or phase counting mode and IOA3 in TIOR_5 is set to 1. 1 P26 output
TIOCA5 output
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Section 9 I/O Ports
* P25/TIOCB4 The pin function is switched as shown below according to the combination of the TPU channel 4 setting and the P25DDR bit.
TPU Channel 4 Setting*1 P25DDR Pin function Output Input or Initial Value 0 P25 input TIOCB4 input*1 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB4 input when TPU channel 4 timer operating mode is set to normal operation or phase counting mode and IOB3 to IOB0 in TIOR_4 are set to 10xx. 1 P25 output
TIOCB4 output
* P24/TIOCA4 The pin function is switched as shown below according to the combination of the TPU channel 4 setting and the P24DDR bit.
TPU Channel 4 Setting*1 P24DDR Pin function Output Input or Initial Value 0 P24 input TIOCA4 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA4 input when TPU channel 4 timer operating mode is set to normal operation or phase counting mode and IOA3 to IOA0 in TIOR_4 are set to 10xx. 1 P24 output
TIOCA4 output
* P23/TIOCD3 The pin function is switched as shown below according to the combination of the TPU channel 3 setting and the P23DDR bit.
TPU Channel 3 Setting* P23DDR Pin function
1
Output
Input or Initial Value 0 P23 input
2
TIOCD3 output
1 P23 output
TIOCD3 input*
Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCD3 input when TPU channel 3 timer operating mode is set to normal operation and IOD3 to IOD0 in TIORL_3 are set to 10xx.
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Section 9 I/O Ports
* P22/TIOCC3 The pin function is switched as shown below according to the combination of the TPU channel 3 setting and the P22DDR bit.
TPU Channel 3 Setting*1 P22DDR Pin function Output Input or Initial Value 0 P22 input TIOCC3 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCC3 input when TPU channel 3 timer operating mode is set to normal operation and IOC3 to IOC0 in TIORL_3 are set to 10xx. 1 P22 output
TIOCC3 output
* P21/TIOCB3 The pin function is switched as shown below according to the combination of the TPU channel 3 setting and the P21DDR bit.
TPU Channel 3 Setting*1 P21DDR Pin function Output Input or Initial Value 0 P21 input TIOCB3 input*2 Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCB3 input when TPU channel 3 timer operating mode is set to normal operation and IOB3 to IOB0 in TIORH_3 are set to 10xx. 1 P21 output
TIOCB3 output
* P20/TIOCA3 The pin function is switched as shown below according to the combination of the TPU channel 3 setting and the P20DDR bit.
TPU Channel 3 Setting* P20DDR Pin function
1
Output
Input or Initial Value 0 P20 input
2
TIOCA3 output
1 P20 output
TIOCA3 input*
Notes: 1. For the setting of the TPU channel, see section 10, 16-Bit Timer Pulse Unit (TPU). 2. This pin functions as TIOCA3 input when TPU channel 3 timer operating mode is set to normal operation and IOA3 to IOA0 in TIORH_3 are set to 10xx.
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9.3
Port 3
Port 3 is an 8-bit I/O port and has the following registers. The P34, P35, SCK1, and SCK4 pins of port 3 are NMOS push-pull outputs. * * * * Port 3 data direction register (P3DDR) Port 3 data register (P3DR) Port 3 register (PORT3) Port 3 open drain control register (P3ODR) Port 3 Data Direction Register (P3DDR)
9.3.1
P3DDR specifies input or output of the port 3 pins using the individual bits. P3DDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name P37DDR P36DDR P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 3 pin an output port. Clearing this bit to 0 makes the pin an input port.
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9.3.2
Port 3 Data Register (P3DR)
P3DR stores output data for port 3 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P37DR P36DR P35DR P34DR P33DR P32DR P31DR P30DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.3.3
Port 3 Register (PORT3)
PORT3 shows port 3 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name P37 P36 P35 P34 P33 P32 P31 P30 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 3 read is performed while P3DDR bits are set to 1, the P3DR values are read. If a port 3 read is performed while P3DDR bits are cleared to 0, the pin states are read.
Determined by the states of pins P37 to P30.
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9.3.4
Port 3 Open Drain Control Register (P3ODR)
P3ODR controls on/off state of the PMOS for port 3 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P37ODR P36ODR P35ODR P34ODR P33ODR P32ODR P31ODR P30ODR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When each of P37ODR, P36ODR, and P33ODR to P30ODR bits is set to 1, the corresponding pins P37, P36, and P33 to P30 function as NMOS open drain outputs. When cleared to 0, the corresponding pins function as CMOS outputs. When each of P35ODR and P34ODR bits is set to 1, the corresponding pins P35 and P34 function as NMOS open drain outputs. When cleared to 0, the corresponding pins function as NMOS push pull outputs.
9.3.5
Pin Functions
The port 3 pins also function as SCI I/O pins, I2C bus interface 2 I/O pins, and interrupt input pins. As shown in figure 9.1, when the pin P34, P35, SCK1, SCK4, SCL0, or SDA0 type open drain output is used, a bus line is not affected even if the power supply for this LSI fails. Use (a) type open drain output when using a bus line having a state in which the power is not supplied to this LSI.
NMOS off 0 Output Input Input 1
PMOS Off
Output
(a) Open drain output type for P34, P35, SCK1, SCK4, SCL0, and SDA0 pins
(b) Open drain output type for P37, P36, P33 to P30, SCL1, SDA1, and port A pins
Figure 9.1 Types of Open Drain Outputs
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The NMOS push-pull outputs of the P34, P35, SCK1 and SCK4 pins do not reach the voltage of P2Vcc, even when the pins are specified so that they are driven high and regardless of the load. To output the voltage of P2Vcc, a pull-up resistor must be externally connected. Notes: 1. When a pull-up resistor is externally connected, signals take longer to rise and fall. When the input signals take a long time to rise and fall, connect an input circuit that has a noise reduction function, such as a Schmitt trigger circuit. 2. For high-speed operation, use an external circuit such as a level shifter. 3. For output characteristics, see the entries for high output voltage for pins P34 and P35 in table 24.2, DC Characteristics (1). The value of the pull-up resistor should satisfy the specification in table 24.3, Permissible Output Currents. * P37/TxD4 The pin function is switched as shown below according to the combination of the TE bit in SCR_4 of SCI_4 and the P37DDR bit.
TE P37DDR Pin function Note: * 0 P37 input 0 1 P37 output* 1 TxD4 output*
When P37ODR is set to 1, this pin functions as NMOS open drain output.
* P36/RxD4 The pin function is switched as shown below according to the combination of the RE bit in SCR_4 of SCI_4 and the P36DDR bit.
RE P36DDR Pin function Note: * 0 P36 input 0 1 P36 output* 1 RxD4 input
When P36ODR is set to 1, this pin functions as NMOS open drain output.
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* P35/SCK1/SCK4/SCL0/IRQ5 The pin function is switched as shown below according to the combination of the ICE bit in ICCR1_0 of IIC2_0, the C/A bit in SMR_1 of SCI_1 or in SMR_4 of SCI_4, the CKE0 and CKE1 bits in SCR_1 or SCR_4, and the P35DDR bit. The SCK1 and SCK4 are not set to outputs simultaneously.
ICE CKE1 C/A CKE0 P35DDR Pin function 0 P35 input 0 1 P35 output*
1
0 0 0 1 SCK1/ SCK4 output*1 1 SCK1/ SCK4 output*1
2
1 1 SCK1/SCK4 input SCL0 input/ output
IRQ5 input*
Notes: 1. When P35ODR is set to 1, this pin functions as NMOS open drain output. When cleared to 0, this pin functions as NMOS push pull output. 2. When this pin is used as an external interrupt pin, do not specify other functions.
* P34/RxD1/SDA0 The pin function is switched as shown below according to the combination of the ICE bit in ICCR1_0 of IIC2_0, the RE bit in SCR_1 of SCI_1, and the P34DDR bit.
ICE RE P34DDR Pin function Note: * 0 P34 input 0 1 P34 output* 0 1 RxD1 input 1 SDA0 input/output
When P34ODR is set to 1, this pin functions as NMOS open drain output. When cleared to 0, this pin functions as NMOS push pull output.
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* P33/TxD1/SCL1 The pin function is switched as shown below according to the combination of the ICE bit in ICCR1_1 of IIC2_1, the TE bit in SCR_1 of SCI_1, and the P33DDR bit.
ICE TE P33DDR Pin function Note: * 0 P33 input 0 1 P33 output* 0 1 TxD1 output* 1 SCL1 input/output
When P33ODR is set to 1, this pin functions as NMOS open drain output.
* P32/SCK0/SDA1/IRQ4 The pin function is switched as shown below according to the combination of the ICE bit in ICCR1_1 of IIC2_1, the C/A bit in SMR_0 of SCI_0, the CKE0 and CKE1 bits in SCR_0, and the P32DDR bit.
ICE CKE1 C/A CKE0 P32DDR Pin function 0 P32 input 0 1 P32 output*1 0 1 SCK0 output*1 0 1 SCK0 output*1 0 1 SCK0 input 1 SDA1 input/ output
IRQ4 Input*2 Notes: 1. When P32ODR is set to 1, this pin functions as NMOS open drain output. 2. When this pin is used as an external interrupt pin, do not specify other functions.
* P31/RxD0 The pin function is switched as shown below according to the combination of the RE bit in SCR_0 of SCI_0 and the P31DDR bit.
RE P31DDR Pin function Note: * 0 P31 input 0 1 P31 output* 1 RxD0 input
When P31ODR is set to 1, this pin functions as NMOS open drain output.
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* P30/TxD0 The pin function is switched as shown below according to the combination of the TE bit in SCR_0 of SCI_0 and the P30DDR bit.
TE P30DDR Pin function Note: * 0 P30 input 0 1 P30 output* 1 TxD0 output*
When P30ODR is set to 1, this pin functions as NMOS open drain output.
9.4
Port 4
Port 4 is an 8-bit input-only port and has the following register. * Port 4 register (PORT4) 9.4.1 Port 4 Register (PORT4)
PORT4 shows port 4 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name P47 P46 P45 P44 P43 P42 P41 P40 * Initial Value * * * * * * * * R/W R R R R R R R R Description The pin states are always read when a port 4 read is performed.
Determined by the states of pins P47 to P40.
9.4.2
Pin Functions
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7).
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9.5
Port 5
Port 5 is a 3-bit I/O port and has the following registers. * Port 5 data direction register (P5DDR) * Port 5 data register (P5DR) * Port 5 register (PORT5) 9.5.1 Port 5 Data Direction Register (P5DDR)
P5DDR specifies input or output of the port 5 pins using the individual bits. P5DDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 to 3 Bit Name Initial Value Undefined R/W Description Reserved These bits are always read as undefined value and cannot be modified. 2 1 0 P52DDR P51DDR P50DDR 0 0 0 W W W When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 5 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
9.5.2
Port 5 Data Register (P5DR)
P5DR stores output data for port 5 pins.
Bit 7 to 3 Bit Name Initial Value Undefined R/W Description Reserved These bits are always read as undefined value and cannot be modified. 2 1 0 P52DR P51DR P50DR 0 0 0 R/W R/W R/W Output data for a pin is stored when the pin is specified as a general purpose output port.
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9.5.3
Port 5 Register (PORT5)
PORT5 shows port 5 pin states. This register cannot be modified.
Bit 7 to 3 Bit Name Initial Value Undefined R/W Description Reserved These bits are always read as undefined value and cannot be modified. 2 1 0 Note: * P52 P51 P50 * * * R R R If a port 5 read is performed while P5DDR bits are set to 1, the P5DR values are read. If a port 5 read is performed while P5DDR bits are cleared to 0, the pin states are read.
Determined by the states of pins P52 to P50.
9.5.4
Pin Functions
Port 5 pins also function as SCI I/O pins. Port 5 pin functions are shown below. * P52/SCK2 The pin function is switched as shown below according to the combination of the C/A bit in SMR_2 of SCI_2, the CKE0 and CKE1 bits in SCR_2, and the P52DDR bit.
CKE1 C/A CKE0 P52DDR Pin function 0 P52 input 0 1 P52 output 0 1 SCK2 output 0 1 SCK2 output 1 SCK2 input
* P51/RxD2 The pin function is switched as shown below according to the combination of the RE bit in SCR_2 of SCI_2 and the P51DDR bit.
RE P51DDR Pin function 0 P51 input 0 1 P51 output 1 RxD2 input
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* P50/ TxD2 The pin function is switched as shown below according to the combination of the TE bit in SCR_2 of SCI_2 and the P50DDR bit.
TE P50DDR Pin function 0 P50 input 0 1 P50 output 1 TxD2 output
9.6
Port 7
Port 7 is an 8-bit I/O port and has the following registers. * Port 7 data direction register (P7DDR) * Port 7 data register (P7DR) * Port 7 register (PORT7) 9.6.1 Port 7 Data Direction Register (P7DDR)
P7DDR specifies input or output of the port 7 pins using the individual bits. P7DDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name P77DDR P76DDR P75DDR P74DDR P73DDR P72DDR P71DDR P70DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port 7 pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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9.6.2
Port 7 Data Register (P7DR)
P7DR stores output data for port 7 pins.
Bit 7 6 5 4 3 2 1 0 Bit Name P77DR P76DR P75DR P74DR P73DR P72DR P71DR P70DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.6.3
Port 7 Register (PORT7)
PORT7 shows port 7 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name P77 P76 P75 P74 P73 P72 P71 P70 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port 7 read is performed while P7DDR bits are set to 1, the P7DR values are read. If a port 7 read is performed while P7DDR bits are cleared to 0, the pin states are read.
Determined by the states of pins P77 to P70.
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9.6.4
Pin Functions
Port 7 pins also function as TMR I/O pins, bus control output pins, SCI I/O pins, and manual reset input pins. Port 7 pin functions are shown below. * P77/TxD3 The pin function is switched as shown below according to the combination of the TE bit in SCR_3 of SCI_3 and the P77DDR bit.
TE P77DDR Pin function 0 P77 input 0 1 P77 output 1 TxD3 output
* P76/RxD3 The pin function is switched as shown below according to the combination of the RE bit in SCR_3 of SCI_3 and the P76DDR bit.
RE P76DDR Pin function 0 P76 input 0 1 P76 output 1 RxD3 input
* P75/TMO3/SCK3 The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_3 of TMR_3, the CKE1 and CKE0 bits in SCR_3 of SCI_3, the C/A bit in SMR_3, and the P75DDR bit.
OS3 to OS0 CKE1 C/A CKE0 P75DDR Pin function 0 P75 input 0 1 0 1 All bits are 0 0 1 1 Any bit is 1
P75 output SCK3 output SCK3 output SCK3 input TMO3 output
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* P74/TMO2/MRES The pin function is switched as shown below according to the combination of the OS3 to OS0 bits in TCSR_2 of TMR_2, the MRESE bit in SYSCR, and the P74DDR bit.
MRESE OS3 to OS0 P74DDR Pin function 0 P74 input All bits are 0 1 P74 output 0 Any bit is 1 TMO2 output 1 0 MRES input
* P73/TMO1/CS7 The pin function is switched as shown below according to the combination of the operating mode, the OS3 to OS0 bits in TCSR_1 of TMR_1, and the P73DDR bit.
Operating mode OS3 to OS0 P73DDR Pin function 0 P73 input Mode 6 All bits are 0 1 CS7 output Any bit is 1 TMO1 output Mode 7 All bits are 0 0 1 Any bit is 1
P73 input P73 output TMO1 output
* P72/TMO0/CS6 The pin function is switched as shown below according to the combination of the operating mode, the OS3 to OS0 bits in TCSR_0 of TMR_0, and the P72DDR bit.
Operating mode OS3 to OS0 P72DDR Pin function 0 P72 input Mode 6 All bits are 0 1 CS6 output Any bit is 1 TMO0 output Mode 7 All bits are 0 0 1 Any bit is 1
P72 input P72 output TMO0 output
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* P71/TMRI23/TMCI23/CS5 The pin function is switched as shown below according to the combination of the operating mode and the P71DDR bit.
Operating mode P71DDR Pin function 0 P71 input Mode 6 1 CS5 output 0 P71 input Mode 7 1 P71 output
TMRI23/TMCI23 input
* P70/TMRI01/TMCI01/CS4 The pin function is switched as shown below according to the combination of the operating mode and the P70DDR bit.
Operating mode P70DDR Pin function 0 P70 input Mode 6 1 CS4 output 0 P70 input Mode 7 1 P70 output
TMRI01/TMCI01 input
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9.7
Port 9
Port 9 is an 8-bit input-only port and has the following register. * Port 9 register (PORT9) 9.7.1 Port 9 Register (PORT9)
PORT9 shows port 9 pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: * Bit Name P97 P96 P95 P94 P93 P92 P91 P90 Initial Value R/W * * * * * * * * R R R R R R R R Description The pin states are always read when a port 9 read is performed.
Determined by the states of pins P97 and P90.
9.7.2
Pin Functions
Port 9 pins also function as A/D converter analog input pins (AN15 and AN8) and D/A converter analog output pins (DA0 and DA1). * P97/AN15/DA1 The pin function is switched as shown below according to the combination of the DAE bit and the DAOE1 bit in DACR of D/A converter.
DAOE1 DAE Pin function 0 P97 input 0 1 DA1 output AN15 input 1 DA1 output
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* P96/AN14/DA0 The pin function is switched as shown below according to the combination of the DAE bit and the DAOE0 bit in DACR of D/A converter.
DAOE0 DAE Pin function 0 P96 input 0 1 DA0 output AN14 input 1 DA0 output
* P95/AN13, P94/AN12, P93/AN11, P92/AN10, P91/AN9, P90/AN8
Pin function P95, P94, P93, P92, P91, P90 input pin AN13, AN12, AN11, AN10, AN9, AN8 input
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9.8
Port A
Port A is an 8-bit I/O port and has the following registers. * * * * * Port A data direction register (PADDR) Port A data register (PADR) Port A register (PORTA) Port A pull-up MOS control register (PAPCR) Port A open drain control register (PAODR) Port A Data Direction Register (PADDR)
9.8.1
PADDR specifies input or output the port A pins using the individual bits. PADDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PA7DDR PA6DDR PA5DDR PA4DDR PA3DDR PA2DDR PA1DDR PA0DDR Initial Value R/W 0 0 0 0 0 0 0 0 W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port A pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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9.8.2
Port A Data Register (PADR)
PADR stores output data for port A pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PA7DR PA6DR PA5DR PA4DR PA3DR PA2DR PA1DR PA0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.8.3
Port A Register (PORTA)
PORTA shows port A pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 * Initial Value R/W * * * * * * * * R R R R R R R R Description If a port A read is performed while PADDR bits are set to 1, the PADR values are read. If a port A read is performed while PADDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PA7 to PA0.
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9.8.4
Port A Pull-Up MOS Control Register (PAPCR)
PAPCR controls on/off state of the input pull-up MOS for port A pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PA7PCR PA6PCR PA5PCR PA4PCR PA3PCR PA2PCR PA1PCR PA0PCR Initial Value R/W 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
9.8.5
Port A Open Drain Control Register (PAODR)
PAODR selects the output type for port A pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PA7ODR PA6ODR PA5ODR PA4ODR PA3ODR PA2ODR PA1ODR PA0ODR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When these bits are set to 1, the corresponding pins function as NMOS open drain outputs. When cleared to 0, the corresponding pins function as CMOS outputs.
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9.8.6
Pin Functions
Port A pins also function as address output pins. Port A pin functions are shown below. * PA7/A23 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA7DDR bit.
Operating mode AE3 to AE0 PA7DDR Pin function Note: * B'1111 A23 output Mode 6 Other than B'1111 0 PA7 input 1 PA7 output* 0 PA7 input Mode 7 1 PA7 output*
When PA7ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
* PA6/A22 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA6DDR bit.
Operating mode AE3 to AE0 PA6DDR Pin function Note: * B'1111 Mode 6 Other than B'1111 0 PA6 input 1 PA6 output* 0 PA6 input Mode 7 1 PA6 output*
A22 output
When PA6ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
* PA5/A21 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA5DDR bit.
Operating mode AE3 to AE0 PA5DDR Pin function B'111x Mode 6 Other than B'111x 0 PA5 input 1 PA5 output* 0 PA5 input Mode 7 1 PA5 output*
A21 output
Legend: x: Don't care Note: * When PA5ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
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* PA4/A20 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA4DDR bit.
Operating mode AE3 to AE0 PA4DDR Pin function Note: * B'1101 to B'1111 Mode 6 Other than B'1101 to B'1111 0 PA4 input 1 PA4 output* 0 PA4 input Mode 7 1 PA4 output*
A20 output
When PA4ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
* PA3/A19 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA3DDR bit.
Operating mode AE3 to AE0 PA3DDR Pin function B'11xx Mode 6 Other than B'11xx 0 PA3 input 1 PA3 output* 0 PA3 input Mode 7
1 PA3 output*
A19 output
Legend: x: Don't care Note: * When PA3ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
* PA2/A18 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA2DDR bit.
Operating mode AE3 to AE0 PA2DDR Pin function B'1011 or B'11xx Mode 6 Other than B'1011 or B'11xx 0 PA2 input 1 PA2 output* 0 PA2 input Mode 7 1 PA2 output*
A18 output
Legend: x: Don't care Note: * When PA2ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
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* PA1/A17 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA1DDR bit.
Operating mode AE3 to AE0 PA1DDR Pin function B'101x or B'11xx Mode 6 Other than B'101x or B'11xx 0 PA1 input 1 PA1 output* 0 PA1 input Mode 7 1 PA1 output*
A17 output
Legend: x: Don't care Note: * When PA1ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
* PA0/A16 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PA0DDR bit.
Operating mode AE3 to AE0 PA0DDR Pin function Mode 6 Other than B'0xxx or B'1000 B'0xxx or B'1000 0 PA0 input 1 PA0 output* 0 PA0 input Mode 7 1 PA0 output*
A16 output
Legend: x: Don't care Note: * When PA0ODR in PAODR is set to 1, this pin functions as NMOS open drain output.
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9.8.7
Input Pull-Up MOS Function (Port A)
Port A has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be specified as on or off on an individual bit basis. Table 9.2 summarizes the input pullup MOS states in port A. Table 9.2
Pin States Address output and port output Port input Legend: OFF: Input pull-up MOS is always off. ON/OFF: On when PADDR = 0 and PAPCR = 1; otherwise off.
Input Pull-Up MOS States (Port A)
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9.9
Port B
Port B is an 8-bit I/O port and has the following registers. * * * * Port B data direction register (PBDDR) Port B data register (PBDR) Port B register (PORTB) Port B pull-up MOS control register (PBPCR)
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Section 9 I/O Ports
9.9.1
Port B Data Direction Register (PBDDR)
PBDDR specifies input or output the port B pins using the individual bits. PBDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PB7DDR PB6DDR PB5DDR PB4DDR PB3DDR PB2DDR PB1DDR PB0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port B pin an output pin. Clearing this bit to 0 makes the pin an input pin.
9.9.2
Port B Data Register (PBDR)
PBDR stores output data for port B pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PB7DR PB6DR PB5DR PB4DR PB3DR PB2DR PB1DR PB0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.9.3
Port B Register (PORTB)
PORTB shows port B pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port B read is performed while PBDDR bits are set to 1, the PBDR values are read. If a port B read is performed while PBDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PB7 to PB0.
9.9.4
Port B Pull-Up MOS Control Register (PBPCR)
PBPCR controls on/off state of the input pull-up MOS for port B pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PB7PCR PB6PCR PB5PCR PB4PCR PB3PCR PB2PCR PB1PCR PB0PCR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
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9.9.5
Pin Functions
Port B pins also function as address output pins. Port B pin functions are shown below. * PB7/A15 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB7DDR bit.
Operating mode AE3 to AE0 PB7DDR Pin function Legend: x: Don't care B'1xxx Mode 6 Other than B'1xxx 0 PB7 input 1 PB7 output 0 PB7 input Mode 7 1 PB7 output
A15 output
* PB6/A14 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB6DDR bit.
Operating mode AE3 to AE0 PB6DDR Pin function Legend: x: Don't care B'0111 or B'1xxx Mode 6 Other than B'0111 or B'1xxx 0 PB6 input 1 PB6 output 0 PB6 input Mode 7 1 PB6 output
A14 output
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Section 9 I/O Ports
* PB5/A13 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB5DDR bit.
Operating mode AE3 to AE0 PB5DDR Pin function Legend: x: Don't care B'011x or B'1xxx Mode 6 Other than B'111x or B'1xxx 0 PB5 input 1 PB5 output 0 PB5 input Mode 7 1 PB5 output
A13 output
* PB4/A12 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB4DDR bit.
Operating mode AE3 to AE0 PB4DDR Pin function Legend: x: Don't care Other than B'0100 or B'00xx Mode 6 B'0100 or B'00xx 0 PB4 input 1 PB4 output 0 PB4 input Mode 7 1 PB4 output
A12 output
* PB3/A11 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB3DDR bit.
Operating mode AE3 to AE0 PB3DDR Pin function Legend: x: Don't care Other than B'00xx Mode 6 B'00xx 0 PB3 input 1 PB3 output 0 PB3 input Mode 7 1 PB3 output
A11 output
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Section 9 I/O Ports
* PB2/A10 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB2DDR bit.
Operating mode AE3 to AE0 PB2DDR Pin function Legend: x: Don't care Other than B'0010 or B'000x Mode 6 B'0010 or B'000x 0 PB2 input 1 PB2 output 0 PB2 input Mode 7 1 PB2 output
A10 output
* PB1/A9 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB1DDR bit.
Operating mode AE3 to AE0 PB1DDR Pin function Legend: x: Don't care Other than B'000x Mode 6 B'000x 0 PB1 input 1 PB1 output 0 PB1 input Mode 7 1 PB1 output
A9 output
* PB0/A8 The pin function is switched as shown below according to the combination of the operating mode, the AE3 to AE0 bits in PFCR, and the PB0DDR bit.
Operating mode AE3 to AE0 PB0DDR Pin function Legend: x: Don't care Other than B'0000 Mode 6 B'0000 0 PB0 input 1 PB0 output 0 PB0 input Mode 7
1 PB0 output
A8 output
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Section 9 I/O Ports
9.9.6
Input Pull-Up MOS Function (Port B)
Port B has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be specified as on or off on an individual bit basis. Table 9.3 summarizes the input pullup MOS states in port B. Table 9.3
Pin States Address output and port output Port input Legend: OFF: Input pull-up MOS is always off. ON/OFF: On when PBDDR = 0 and PBPCR = 1; otherwise off.
Input Pull-Up MOS States (Port B)
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Section 9 I/O Ports
9.10
Port C
Port C is an 8-bit I/O port and has the following registers. * * * * Port C data direction register (PCDDR) Port C data register (PCDR) Port C register (PORTC) Port C pull-up MOS control register (PCPCR) Port C Data Direction Register (PCDDR)
9.10.1
PCDDR specifies input or output the port C pins using the individual bits. PCDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PC7DDR PC6DDR PC5DDR PC4DDR PC3DDR PC2DDR PC1DDR PC0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port C pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.10.2
Port C Data Register (PCDR)
PCDR stores output data for port C pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PC7DR PC6DR PC5DR PC4DR PC3DR PC2DR PC1DR PC0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.10.3
Port C Register (PORTC)
PORTC shows port C pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port C read is performed while PCDDR bits are set to 1, the PCDR values are read. If a port C read is performed while PCDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PC7 to PC0.
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Section 9 I/O Ports
9.10.4
Port C Pull-Up MOS Control Register (PCPCR)
PCPCR controls on/off state of the input pull-up MOS for port C pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PC7PCR PC6PCR PC5PCR PC4PCR PC3PCR PC2PCR PC1PCR PC0PCR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
9.10.5
Pin Functions
Port C pins also function as address output pins. Port C pin functions are shown below. * PC7/A7, PC6/A6, PC5/A5, PC4/A4, PC3/A3, PC2/A2, PC1/A1, PC0/A0 The pin function is switched as shown below according to the combination of the operating mode and the PCnDDR bit.
Operating mode PCnDDR Pin function Note: n = 7 to 0 0 PCn input Mode 6 1 Address output 0 PCn input Mode 7 1 PCn output
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Section 9 I/O Ports
9.10.6
Input Pull-Up MOS Function (Port C)
Port C has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be used in mode 6 or mode 7, and can be specified as on or off on an individual bit basis. Table 9.4 summarizes the input pull-up MOS states in port C. Table 9.4
Pin States Address output (mode 6) and port output (mode 7) Port input Legend: OFF: Input pull-up MOS is always off. ON/OFF: On when PCDDR = 0 and PCPCR = 1; otherwise off.
Input Pull-Up MOS States (Port C)
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Section 9 I/O Ports
9.11
Port D
Port D is an 8-bit I/O port and has the following registers. * * * * Port D data direction register (PDDDR) Port D data register (PDDR) Port D register (PORTD) Port D pull-up MOS control register (PDPCR) Port D Data Direction Register (PDDDR)
9.11.1
PDDDR specifies input or output the port D pins using the individual bits. PDDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PD7DDR PD6DDR PD5DDR PD4DDR PD3DDR PD2DDR PD1DDR PD0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port D pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.11.2
Port D Data Register (PDDR)
PDDR stores output data for port D pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PD7DR PD6DR PD5DR PD4DR PD3DR PD2DR PD1DR PD0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.11.3
Port D Register (PORTD)
PORTD shows port D pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port D read is performed while PDDDR bits are set to 1, the PDDR values are read. If a port D read is performed while PDDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PD7 to PD0.
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Section 9 I/O Ports
9.11.4
Port D Pull-Up MOS Control Register (PDPCR)
PDPCR controls on/off state of the input pull-up MOS for port D pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PD7PCR PD6PCR PD5PCR PD4PCR PD3PCR PD2PCR PD1PCR PD0PCR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
9.11.5
Pin Functions
Port D pins also function as data I/O pins. Port D pin functions are shown below. * PD7/D15, PD6/D14, PD5/D13, PD4/D12, PD3/D11, PD2/D10, PD1/D9, PD0/D8 The pin function is switched as shown below according to the combination of the operating mode and the PDnDDR bit.
Operating mode PDnDDR Pin function Note: n = 7 to 0 Mode 6 Data input/output 0 PDn input Mode 7 1 PDn output
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Section 9 I/O Ports
9.11.6
Input Pull-Up MOS Function (Port D)
Port D has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be used in mode 7, and can be specified as on or off on an individual bit basis. Table 9.5 summarizes the input pull-up MOS states in port D. Table 9.5
Pin States Data input/output (mode 6) and port output (mode 7) Port input (mode 7) Legend: OFF: Input pull-up MOS is always off. ON/OFF: On when PDDDR = 0 and PDPCR = 1; otherwise off.
Input Pull-Up MOS States (Port D)
Power-on Reset Hardware Manual Standby Mode Reset OFF Software Standby Mode OFF In Other Operations
ON/OFF
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Section 9 I/O Ports
9.12
Port E
Port E is an 8-bit I/O port and has the following registers. * * * * Port E data direction register (PEDDR) Port E data register (PEDR) Port E register (PORTE) Port E pull-up MOS control register (PEPCR) Port E Data Direction Register (PEDDR)
9.12.1
PEDDR specifies input or output the port E pins using the individual bits. PEDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PE7DDR PE6DDR PE5DDR PE4DDR PE3DDR PE2DDR PE1DDR PE0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port E pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.12.2
Port E Data Register (PEDR)
PEDR stores output data for port E pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PE7DR PE6DR PE5DR PE4DR PE3DR PE2DR PE1DR PE0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.12.3
Port E Register (PORTE)
PORTE shows port E pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PE7 PE6 PE5 PE4 PE3 PE2 PE1 PE0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port E read is performed while PEDDR bits are set to 1, the PEDR values are read. If a port E read is performed while PEDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PE7 to PE0.
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Section 9 I/O Ports
9.12.4
Port E Pull-Up MOS Control Register (PEPCR)
PEPCR controls on/off state of the input pull-up MOS for port E pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PE7PCR PE6PCR PE5PCR PE4PCR PE3PCR PE2PCR PE1PCR PE0PCR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When a pin is specified as an input port, setting the corresponding bit to 1 turns on the input pull-up MOS for that pin.
9.12.5
Pin Functions
Port E pins also function as data I/O pins. Port E pin functions are shown below. * PE7/D7, PE6/D6, PE5/D5, PE4/D4, PE3/D3, PE2/D2, PE1/D1, PE0/D0 The pin function is switched as shown below according to the combination of the operating mode and the PEnDDR bit.
Operating mode Bus mode PEnDDR Pin function Note: n = 7 to 0 Mode 6 8-bit bus mode 0 PEn input 1 PEn output 16-bit bus mode Data input/output 0 PEn input Mode 7 1 PEn output
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Section 9 I/O Ports
9.12.6
Input Pull-Up MOS Function (Port E)
Port E has a built-in input pull-up MOS function that can be controlled by software. Input pull-up MOS can be used in mode 7 or 8-bit bus mode in mode 6, and can be specified as on or off on an individual bit basis. Table 9.6 summarizes the input pull-up MOS states in port E. Table 9.6
Pin States Data input/output (16-bit bus in mode 6) and port output (8-bit bus in mode 6, mode 7) Port input (8-bit bus in mode 6, mode 7) Legend: OFF: Input pull-up MOS is always off. ON/OFF: On when PEDDR = 0 and PEPCR = 1; otherwise off.
Input Pull-Up MOS States (Port E)
Power-on Hardware Manual Software In Other Reset Standby Mode Reset Standby Mode Operations OFF OFF
ON/OFF
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Section 9 I/O Ports
9.13
Port F
Port F is an 8-bit I/O port and has the following registers. * Port F data direction register (PFDDR) * Port F data register (PFDR) * Port F register (PORTF) 9.13.1 Port F Data Direction Register (PFDDR)
PFDDR specifies input or output the port F pins using the individual bits. PFDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PF7DDR PF6DDR PF5DDR PF4DDR PF3DDR PF2DDR PF1DDR PF0DDR * Initial Value 0/1* 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port F pin an output pin. Clearing this bit to 0 makes the pin an input pin.
PF7DDR is initialized to 1 in mode 6 and 0 in mode 7.
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9.13.2
Port F Data Register (PFDR)
PFDR stores output data for port F pins.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PF7DR* PF6DR PF5DR PF4DR PF3DR PF2DR PF1DR PF0DR * Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
The value of PF7DR is not output on pin PF7 when the PF7DDR bit is set to 1 since the signal is output.
9.13.3
Port F Register (PORTF)
PORTF shows port F pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PF7 PF6 PF5 PF4 PF3 PF2 PF1 PF0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port F read is performed while PFDDR bits are set to 1, the PFDR values are read. If a port F read is performed while PFDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PF7 to PF0.
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Section 9 I/O Ports
9.13.4
Pin Functions
Port F pins also function as bus control I/O pins, interrupt input pins, system clock output pins, A/D trigger input pins, and BUZZ output pins. Port F pin functions are shown below. * PF7/ The pin function is switched as shown below according to the PF7DDR bit.
PF7DDR Pin function 0 PF7 input 1 output
* PF6/AS The pin function is switched as shown below according to the combination of the operating mode and the PF6DDR bit.
Operating mode PF6DDR Pin function Mode 6 AS output 0 PF6 input Mode 7 1 PF6 output
* PF5/RD The pin function is switched as shown below according to the combination of the operating mode and the PF5DDR bit.
Operating mode PF5DDR Pin function Mode 6 RD output 0 PF5 input Mode 7 1 PF5 output
* PF4/HWR The pin function is switched as shown below according to the combination of the operating mode and the PF4DDR bit.
Operating mode PF4DDR Pin function Mode 6 HWR output 0 PF4 input Mode 7 1 PF4 output
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Section 9 I/O Ports
* PF3/LWR/ADTRG/IRQ3 The pin function is switched as shown below according to the combination of the operation mode, the bus mode, the TRGS1 and TRGS0 bits in ADCR of the A/D converter, and the PF3DDR bit.
Operating mode Bus mode PF3DDR Pin function 16-bit bus mode LWR output Mode 6 8-bit bus mode 0 PF3 input 1 PF3 output 0 PF3 input
1
Mode 7 1 PF3 output
ADTRG input* IRQ3 input*2
Notes: 1. When TRGS0 = TRGS1 = 1, port F is used as the ADTRG input pin. 2. When this port is used as an external interrupt pin, do not specify other functions.
* PF2/WAIT The pin function is switched as shown below according to the combination of the operating mode, the WAITE bit, and the PF2DDR bit.
Operating mode WAITE PF2DDR Pin function 0 PF2 input 0 1 PF2 output Mode 6 1 WAIT input 0 PF2 input Mode 7 1 PF2 output
* PF1/BACK/BUZZ The pin function is switched as shown below according to the combination of the operating mode, the BRLE bit, the BUZZ bit in PFCR, and the PF1DDR bit.
Operating mode BRLE BUZZE PF1DDR Pin function 0 PF1 input 0 1 PF1 output 0 1 BUZZ output Mode 6 1 BACK output 0 PF1 input 0 1 PF1 output Mode 7 1 BUZZ output
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Section 9 I/O Ports
* PF0/BREQ/IRQ2 The pin function is switched as shown below according to the combination of the operating mode, the BRLE bit, and the PF0DDR bit.
Operating mode BRLE PF0DDR Pin function Note: * 0 PF0 input 0 1 PF0 output Mode 6 1 BREQ input IRQ2 input* When this port is used as an external interrupt pin, do not specify other functions. 0 PF0 input Mode 7 1 PF0 output
9.14
Port G
Port G is a 5-bit I/O port and has the following registers. * Port G data direction register (PGDDR) * Port G data register (PGDR) * Port G register (PORTG) 9.14.1 Port G Data Direction Register (PGDDR)
PGDDR specifies input or output the port G pins using the individual bits. PGDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 to 5 Bit Name Initial Value R/W Undefined Description Reserved These bits are always read as undefined value and cannot be modified. 4 3 2 1 0 Note: * PG4DDR PG3DDR* PG2DDR* PG1DDR PG0DDR 0 0 0 0 0 W W W W W When a pin is specified as a general purpose I/O port, setting these bits to 1 makes the corresponding port G pin an output pin. Clearing this bit to 0 makes the pin an input pin.
Reserved in the H8S/2556 Group. This bit is set to 0.
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Section 9 I/O Ports
9.14.2
Port G Data Register (PGDR)
PGDR stores output data for port G pins.
Bit 7 to 5 Bit Name Initial Value R/W Undefined Description Reserved These bits are always read as undefined value and cannot be modified. 4 3 2 1 0 Note: * PG4DR PG3DR* PG2DR* PG1DR PG0DR 0 0 0 0 0 R/W R/W R/W R/W R/W Output data for a pin is stored when the pin is specified as a general purpose output port.
Reserved in the H8S/2556 Group. This bit is set to 0.
9.14.3
Port G Register (PORTG)
PORTG shows port G pin states. This register cannot be modified.
Bit 7 to 5 Bit Name Initial Value Undefined R/W Description Reserved This bit is always read as undefined value and cannot be modified. 4 3 2 1 0 PG4 PG3* PG2* PG1 PG0
2 2
* * * *
1 1
R R R R R
*1
1 1
If these bits are read while the corresponding PGDDR bits are set to 1, the PGDR value is read. If these bits are read while PGDDR bits are cleared to 0, the pin states are read.
Notes: 1. Determined by the states of pins PG4 to PG0. 2. Reserved in the H8S/2556 Group. An undefined value will be read.
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Section 9 I/O Ports
9.14.4
Pin Functions
Port G pins also function as bus control I/O pins, interrupt input pins, and IEB I/O pins. Port G pin functions are shown below. * PG4/CS0 The pin function is switched as shown below according to the combination of the operating mode and the PG4DDR bit.
Operating mode PG4DDR Pin function 0 PG4 input Mode 6 1 CS0 output 0 PG4 input Mode 7 1 PG4 output
* PG3/Rx/CS1 In the H8S/2552 and H8S/2506 Groups, the pin function is switched as shown below according to the combination of the IEE bit in IECTR of IEB*, the operating mode, and the PG3DDR bit. This pin is not available in the H8S/2556 Group.
IEE Operating mode PG3DDR Pin function Note: * 0 PG3 input Mode 6 1 CS1 output 0 PG3 input 0 Mode 7 1 PG3 output 1 Rx input
IEB is supported only by the H8S/2552 Group.
* PG2/Tx/CS2 In the H8S/2552 and H8S/2506 Groups, the pin function is switched as shown below according to the combination of the IEE bit in IECTR of IEB*, the operating mode, and the PG2DDR bit. This pin is not available in the H8S/2556 Group.
IEE Operating mode PG2DDR Pin function Note: * 0 PG2 input Mode 6 1 CS2 output 0 PG2 input 0 Mode 7 1 PG2 output 1 Tx output
IEB is supported only by the H8S/2552 Group.
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Section 9 I/O Ports
* PG1/CS3/IRQ7 The pin function is switched as shown below according to the combination of the operating mode and the PG1DDR bit.
Operating mode PG1DDR Pin function Note: * 0 PG1 input Mode 6 1 CS3 output IRQ7 input* When this port is used as an external interrupt pin, do not specify other functions. 0 PG1 input Mode 7 1 PG1 output
* PG0/IRQ6 The pin function is switched as shown below according to the PG0DDR bit.
PG0DDR Pin function Note: * 0 PG0 input IRQ6 input* When this port is used as an external interrupt pin, do not specify other functions. 1 PG0 output
9.15
Port H
Port H is an 8-bit I/O port and has the following registers. * Port H data direction register (PHDDR) * Port H data register (PHDR) * Port H register (PORTH)
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Section 9 I/O Ports
9.15.1
Port H Data Direction Register (PHDDR)
PHDDR specifies input or output the port H pins using the individual bits. PHDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bitmanipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PH7DDR PH6DDR PH5DDR PH4DDR PH3DDR PH2DDR PH1DDR PH0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port H pin an output pin. Clearing this bit to 0 makes the pin an input pin.
9.15.2
Port H Data Register (PHDR)
PHDR stores output data for port H pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PH7DR PH6DR PH5DR PH4DR PH3DR PH2DR PH1DR PH0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
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Section 9 I/O Ports
9.15.3
Port H Register (PORTH)
PORTH shows port H pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port H read is performed while PHDDR bits are set to 1, the PHDR values are read. If a port H read is performed while PHDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PH7 to PH0.
9.15.4
Pin Functions
Port H pins also function as general purpose I/O pins. Port H pin functions are shown below. * PH7, PH6, PH5, PH4, PH3, PH2, PH1, PH0 The pin function is switched as shown below according to the PHnDDR bit.
PHnDDR Pin function Note: n = 7 to 0 0 PHn input 1 PHn output
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Section 9 I/O Ports
9.16
Port J
Port J is an 8-bit I/O port and has the following registers. * Port J data direction register (PJDDR) * Port J data register (PJDR) * Port J register (PORTJ) 9.16.1 Port J Data Direction Register (PJDDR)
PJDDR specifies input or output the port J pins using the individual bits. PJDDR cannot be read; if it is, the read value is undefined. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7DDR PJ6DDR PJ5DDR PJ4DDR PJ3DDR PJ2DDR PJ1DDR PJ0DDR Initial Value 0 0 0 0 0 0 0 0 R/W W W W W W W W W Description When a pin is specified as a general purpose I/O port, setting this bit to 1 makes the corresponding port J pin an output pin. Clearing this bit to 0 makes the pin an input pin.
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Section 9 I/O Ports
9.16.2
Port J Data Register (PJDR)
PJDR stores output data for port J pins.
Bit 7 6 5 4 3 2 1 0 Bit Name PJ7DR PJ6DR PJ5DR PJ4DR PJ3DR PJ2DR PJ1DR PJ0DR Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Output data for a pin is stored when the pin is specified as a general purpose output port.
9.16.3
Port J Register (PORTJ)
PORTJ shows port J pin states. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Note: Bit Name PJ7 PJ6 PJ5 PJ4 PJ3 PJ2 PJ1 PJ0 * Initial Value * * * * * * * * R/W R R R R R R R R Description If a port J read is performed while PJDDR bits are set to 1, the PJDR values are read. If a port J read is performed while PJDDR bits are cleared to 0, the pin states are read.
Determined by the states of pins PJ7 to PJ0.
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Section 9 I/O Ports
9.16.4
Pin Functions
Port J pins also function as general purpose I/O pins. Port J pin functions are shown below. * PJ7, PJ6, PJ5, PJ4, PJ3, PJ2, PJ1, PJ0 The pin function is switched as shown below according to the PJnDDR bit.
PJnDDR Pin function Note: n = 7 to 0 0 PJn input 1 PJn output
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Section 9 I/O Ports
9.17
Power Supply Pin Control
Drivability of output ports of which power is supplied by P1VCC or P2VCC is controlled. 9.17.1 IC Power Control Register (ICPCR)
ICPCR controls buffer drivability.
Bit 7 to 4 Bit Name Initial Value All 0 R/W Description Reserved This bit is readable/writable, but the write value should always be 0. 3 BUFGC2 0 R/W Buffer Gain Control 2 Controls drivability of output ports of which power is supplied by P2VCC. This bit should be set according to the voltage of P2VCC when a port is used as an output port. If the bit setting is not appropriate, it may cause malfunction or characteristics described in section 24, Electrical Characteristics cannot be satisfied. For the power supply pin, see table 1.1. 0: 4.5 V P2VCC 5.5 V 1: 3.0 V P2VCC 3.6 V 2 BUFGC1 0 R/W Buffer Gain Control 1 Controls drivability of output ports of which power is supplied by P1VCC. This bit should be set according to the voltage of P1VCC when a port is used as an output port. If the bit setting is not appropriate, it may cause malfunction or characteristics described in section 24, Electrical Characteristics cannot be satisfied. For the power supply pin, see table 1.1. 0: 4.5 V P1VCC 5.5 V 1: 3.0 V P1VCC 3.6 V 1, 0 All 0 R/W Reserved These bits are readable/writable, but the write value should always be 0.
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Section 9 I/O Ports
9.18
Handling of Unused Pins
Unused input pins should be fixed high or low. Generally, the input pins of CMOS products are high-impedance. Leaving unused pins open can cause the generation of intermediate levels due to peripheral noise induction. This can result in shoot-through current inside the device and cause it to malfunction. Table 9.7 lists examples of ways to handle unused pins. Table 9.7
Port Name Port 1 Port 2 Port 3 Port 4 Port 5 Port 7 Port 9 Port A Port B Port C Port D Port E Port F Port G Port H Port J Connect each pin to AVcc (pull-up) or to AVss (pull-down) via a resistor. Connect each pin to P1Vcc (pull-up) or to Vss (pull-down) via a resistor. Connect each pin to P2Vcc (pull-up) or to Vss (pull-down) via a resistor. Connect each pin to AVcc (pull-up) or to AVss (pull-down) via a resistor. Connect each pin to P1Vcc (pull-up) or to Vss (pull-down) via a resistor.
Examples of Ways to Handle Unused Input Pins
Pin Handling Example Connect each pin to P2Vcc (pull-up) or to Vss (pull-down) via a resistor.
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Section 9 I/O Ports
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Section 10 16-Bit Timer Pulse Unit (TPU)
Section 10 16-Bit Timer Pulse Unit (TPU)
This LSI has an on-chip 16-bit timer pulse unit (TPU) comprised of six 16-bit timer channels. The function list of the 16-bit timer unit and its block diagram are shown in table 10.1 and figure 10.1, respectively.
10.1
Features
* Maximum 16-pulse input/output * Selection of 8 counter input clocks for each channel * The following operations can be set for each channel: Waveform output at compare match Input capture function Counter clear operation Synchronous operation: Multiple timer counters (TCNT) can be written to simultaneously Simultaneous clearing by compare match and input capture is possible Register simultaneous input/output is possible by synchronous counter operation A maximum 15-phase PWM output is possible in combination with synchronous operation * Buffer operation settable for channels 0 and 3 * Phase counting mode settable independently for each of channels 1, 2, 4, and 5 * Cascaded operation * Fast access via internal 16-bit bus * 26 interrupt sources * Automatic transfer of register data * A/D converter conversion start trigger can be generated * Module stop mode can be set
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.1 TPU Functions
Item Count clock Channel 0 Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 /1 /4 /16 /64 TCLKA TCLKB TCLKC TCLKD TGRA_0 TGRB_0 TGRC_0 TGRD_0 TIOCA0 TIOCB0 TIOCC0 TIOCD0 TGR compare match or input capture /1 /4 /16 /64 /256 TCLKA TCLKB TGRA_1 TGRB_1 -- TIOCA1 TIOCB1 /1 /4 /16 /64 /1024 TCLKA TCLKB TCLKC TGRA_2 TGRB_2 -- TIOCA2 TIOCB2 /1 /4 /16 /64 /256 /1024 /4096 TCLKA TGRA_3 TGRB_3 TGRC_3 TGRD_3 TIOCA3 TIOCB3 TIOCC3 TIOCD3 TGR compare match or input capture /1 /4 /16 /64 /1024 TCLKA TCLKC TGRA_4 TGRB_4 -- TIOCA4 TIOCB4 /1 /4 /16 /64 /256 TCLKA TCLKC TCLKD TGRA_5 TGRB_5 -- TIOCA5 TIOCB5
General registers (TGR) General registers/ buffer registers I/O pins
Counter clear function
TGR compare match or input capture
TGR compare match or input capture
TGR compare match or input capture
TGR compare match or input capture
Compare 0 output match 1 output output Toggle output Input capture function Synchronous operation PWM mode Phase counting mode Buffer operation -- -- -- -- -- --
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Section 10 16-Bit Timer Pulse Unit (TPU)
Item
Channel 0
Channel 1 TGR compare match or input capture TGRA_1 compare match or input capture 4 sources
Channel 2 TGR compare match or input capture TGRA_2 compare match or input capture 4 sources
Channel 3 TGR compare match or input capture TGRA_3 compare match or input capture 5 sources
Channel 4 TGR compare match or input capture TGRA_4 compare match or input capture 4 sources
Channel 5 TGR compare match or input capture TGRA_5 compare match or input capture 4 sources Compare match or input capture 5A Compare match or input capture 5B Overflow Underflow
DTC TGR activation compare match or input capture A/D TGRA_0 converter compare trigger match or input capture Interrupt sources 5 sources *
Compare * match or input capture 0A Compare * match or input capture 0B Compare * match or * input capture 0C Compare match or input capture 0D Overflow
Compare * match or input capture 1A Compare * match or input capture 1B Overflow * Underflow *
Compare * match or input capture 2A Compare * match or input capture 2B Overflow Underflow *
Compare * match or input capture 3A Compare * match or input capture 3B Compare * match or * input capture 3C Compare match or input capture 3D Overflow
Compare * match or input capture 4A Compare * match or input capture 4B Overflow * Underflow *
*
*
*
*
*
*
Legend: : Possible --: Not possible
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Section 10 16-Bit Timer Pulse Unit (TPU)
TIORH TIORL
TMDR
Channel 3
TSR
TGRC
TGRD
TGRA
TGRB
TCNT
Input/output pins Channel 3:
TIOCA3 TIOCB3 TIOCC3 TIOCD3 TIOCA4 TIOCB4 TIOCA5 TIOCB5
Control logic for channels 3 to 5
TIOR
Channel 5:
TMDR
Channel 5
TSR
TIER
TCR
Channel 4:
TGRA
TIOR
Clock input Internal clock:
/1 /4 /16 /64 /256 /1024 /4096 TCLKA TCLKB TCLKC TCLKD
TIER
TCR
Module data bus
TSYR
TGRB
TCNT
Interrupt request signals Channel 3: TGI3A TGI3B TGI3C TGI3D TCI3V Channel 4: TGI4A TGI4B TCI4V TCI4U Channel 5: TGI5A TGI5B TCI5V TCI5U
TMDR
Channel 4
TSR
TIER
TCR
TGRA
TGRB
TCNT
Control logic
Internal data bus
Common
Bus interface
External clock:
TMDR
Channel 2
TSR
TSTR
A/D converter conversion start signal
TGRA
TIOR
Input/output pins Channel 0:
TIOCA0 TIOCB0 TIOCC0 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2
TIER
TCR
TGRB
TCNT
Channel 2:
TIORH TIORL
TMDR
Channel 0
TSR
TIER
TCR
Channel 1:
Interrupt request signals Channel 0: TGI0A TGI0B TGI0C TGI0D TCI0V Channel 1: TGI1A TGI1B TCI1V TCI1U Channel 2: TGI2A TGI2B TCI2V TCI2U
TMDR
Control logic for channels 0 to 2
Channel 1
TSR
TGRA
TIOR
TGRB TGRC TGRD TGRB
TCNT TCNT
Legend: TSTR: TSYR: TCR: TMDR: Timer start register Timer synchro register Timer control register Timer mode register Timer I/O control registers (H, L) TIOR (H, L) Timer interrupt enable register TIER: Timer status register TSR: TGR (A, B, C, D): Timer general registers (A, B, C, D) Timer counter TCNT:
Figure 10.1 Block Diagram of TPU
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TIER
TCR
TGRA
Section 10 16-Bit Timer Pulse Unit (TPU)
10.2
Input/Output Pins
Table 10.2 TPU Pins
Channel Symbol I/O Input Input Input Input I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O Function External clock A input pin (Channel 1 and 5 phase counting mode A phase input) External clock B input pin (Channel 1 and 5 phase counting mode B phase input) External clock C input pin (Channel 2 and 4 phase counting mode A phase input) External clock D input pin (Channel 2 and 4 phase counting mode B phase input) TGRA_0 input capture input/output compare output/PWM output pin TGRB_0 input capture input/output compare output/PWM output pin TGRC_0 input capture input/output compare output/PWM output pin TGRD_0 input capture input/output compare output/PWM output pin TGRA_1 input capture input/output compare output/PWM output pin TGRB_1 input capture input/output compare output/PWM output pin TGRA_2 input capture input/output compare output/PWM output pin TGRB_2 input capture input/output compare output/PWM output pin TGRA_3 input capture input/output compare output/PWM output pin TGRB_3 input capture input/output compare output/PWM output pin TGRC_3 input capture input/output compare output/PWM output pin TGRD_3 input capture input/output compare output/PWM output pin
Common TCLKA TCLKB TCLKC TCLKD 0 TIOCA0 TIOCB0 TIOCC0 TIOCD0 1 TIOCA1 TIOCB1 2 TIOCA2 TIOCB2 3 TIOCA3 TIOCB3 TIOCC3 TIOCD3
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Section 10 16-Bit Timer Pulse Unit (TPU)
Channel 4
Symbol TIOCA4 TIOCB4
I/O I/O I/O I/O I/O
Function TGRA_4 input capture input/output compare output/PWM output pin TGRB_4 input capture input/output compare output/PWM output pin TGRA_5 input capture input/output compare output/PWM output pin TGRB_5 input capture input/output compare output/PWM output pin
5
TIOCA5 TIOCB5
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3
Register Descriptions
The TPU has the following registers. When the FLSHE bit in the system control register 2 (SYSCR2) is set to 1, some TPU control registers (H'FFFE80 to H'FFFEB1) cannot be accessed. The FLSHE bit should be cleared to 0 before the TPU control register is accessed. For the system control register 2, see System Control Register 2 (SYSCR2) in section 20.3.1, Programming/Erasing Interface Register. Channel 0 * Timer control register_0 (TCR_0) * Timer mode register_0 (TMDR_0) * Timer I/O control register H_0 (TIORH_0) * Timer I/O control register L_0 (TIORL_0) * Timer interrupt enable register_0 (TIER_0) * Timer status register_0 (TSR_0) * Timer counter_0 (TCNT_0) * Timer general register A_0 (TGRA_0) * Timer general register B_0 (TGRB_0) * Timer general register C_0 (TGRC_0) * Timer general register D_0 (TGRD_0) Channel 1 * Timer control register_1 (TCR_1) * Timer mode register_1 (TMDR_1) * Timer I/O control register _1 (TIOR_1) * Timer interrupt enable register_1 (TIER_1) * Timer status register_1 (TSR_1) * Timer counter_1 (TCNT_1) * Timer general register A_1 (TGRA_1) * Timer general register B_1 (TGRB_1)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Channel 2 * Timer control register_2 (TCR_2) * Timer mode register_2 (TMDR_2) * Timer I/O control register_2 (TIOR_2) * Timer interrupt enable register_2 (TIER_2) * Timer status register_2 (TSR_2) * Timer counter_2 (TCNT_2) * Timer general register A_2 (TGRA_2) * Timer general register B_2 (TGRB_2) Channel 3 * Timer control register_3 (TCR_3) * Timer mode register_3 (TMDR_3) * Timer I/O control register H_3 (TIORH_3) * Timer I/O control register L_3 (TIORL_3) * Timer interrupt enable register_3 (TIER_3) * Timer status register_3 (TSR_3) * Timer counter_3 (TCNT_3) * Timer general register A_3 (TGRA_3) * Timer general register B_3 (TGRB_3) * Timer general register C_3 (TGRC_3) * Timer general register D_3 (TGRD_3) Channel 4 * Timer control register_4 (TCR_4) * Timer mode register_4 (TMDR_4) * Timer I/O control register _4 (TIOR_4) * Timer interrupt enable register_4 (TIER_4) * Timer status register_4 (TSR_4) * Timer counter_4 (TCNT_4) * Timer general register A_4 (TGRA_4) * Timer general register B_4 (TGRB_4)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Channel 5 * Timer control register_5 (TCR_5) * Timer mode register_5 (TMDR_5) * Timer I/O control register_5 (TIOR_5) * Timer interrupt enable register_5 (TIER_5) * Timer status register_5 (TSR_5) * Timer counter_5 (TCNT_5) * Timer general register A_5 (TGRA_5) * Timer general register B_5 (TGRB_5) Common Registers * Timer start register (TSTR) * Timer synchro register (TSYR)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.1
Timer Control Register (TCR)
The TCR registers control the TCNT operation for each channel. The TPU has a total of six TCR registers, one for each channel (channels 0 to 5). TCR register settings should be conducted only when TCNT operation is stopped.
Bit 7 6 5 4 3 Bit Name CCLR2 CCLR1 CCLR0 CKEG1 CKEG0 Initial value 0 0 0 0 0 R/W R/W R/W R/W R/W R/W Description Counter Clear 2 to 0 These bits select the TCNT counter clearing source. See tables 10.3 and 10.4 for details. Clock Edge 1 and 0 These bits select the input clock edge. When the input clock is counted using both edges, the input clock period is halved (e.g. /4 both edges = /2 rising edge). If phase counting mode is used on channels 1, 2, 4, and 5, this setting is ignored and the phase counting mode setting has priority. Internal clock edge selection is valid when the input clock is /4 or slower. This setting is ignored if the input clock is /1, or when overflow/underflow of another channel is selected. (The clock is counted at the falling edge when /1 is selected.) 00: Count at rising edge 01: Count at falling edge 1X: Count at both edges Legend: X: Don't care 2 1 0 TPSC2 TPSC1 TPSC0 0 0 0 R/W R/W R/W Time Prescaler 2 to 0 These bits select the TCNT counter clock. The clock source can be selected independently for each channel. See tables 10.5 to 10.10 for details.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.3 CCLR0 to CCLR2 (channels 0 and 3)
Channel 0, 3 Bit 7 CCLR2 0 Bit 6 CCLR1 0 Bit 5 CCLR0 0 1 1 0 1 Description TCNT clearing disabled TCNT cleared by TGRA compare match/input capture TCNT cleared by TGRB compare match/input capture TCNT cleared by counter clearing for another channel performing synchronous clearing/ 1 synchronous operation* TCNT clearing disabled TCNT cleared by TGRC compare match/input 2 capture* TCNT cleared by TGRD compare match/input capture*2 TCNT cleared by counter clearing for another channel performing synchronous clearing/ synchronous operation*1
1
0
0 1
1
0 1
Notes: 1. Synchronous operation is set by setting the SYNC bit in TSYR to 1. 2. When TGRC or TGRD is used as a buffer register, TCNT is not cleared because the buffer register setting has priority, and compare match/input capture does not occur.
Table 10.4 CCLR0 to CCLR2 (channels 1, 2, 4, and 5)
Channel 1, 2, 4, 5 Bit 7 Bit 6 Reserved*2 CCLR1 0 0 Bit 5 CCLR0 0 1 1 0 1 Description TCNT clearing disabled TCNT cleared by TGRA compare match/input capture TCNT cleared by TGRB compare match/input capture TCNT cleared by counter clearing for another channel performing synchronous clearing/ 1 synchronous operation*
Notes: 1. Synchronous operation is selected by setting the SYNC bit in TSYR to 1. 2. Bit 7 is reserved in channels 1, 2, 4, and 5. It is always read as 0 and cannot be modified.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.5 TPSC0 to TPSC2 (channel 0)
Channel 0 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input External clock: counts on TCLKC pin input External clock: counts on TCLKD pin input
Table 10.6 TPSC0 to TPSC2 (channel 1)
Channel 1 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input Internal clock: counts on /256 Counts on TCNT2 overflow/underflow
Note: This setting is ignored when channel 1 is in phase counting mode.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.7 TPSC0 to TPSC2 (channels 2)
Channel 2 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKB pin input External clock: counts on TCLKC pin input Internal clock: counts on /1024
Note: This setting is ignored when channel 2 is in phase counting mode.
Table 10.8 TPSC0 to TPSC2 (channel 3)
Channel 3 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input Internal clock: counts on /1024 Internal clock: counts on /256 Internal clock: counts on /4096
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.9 TPSC0 to TPSC2 (channel 4)
Channel 4 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKC pin input Internal clock: counts on /1024 Counts on TCNT5 overflow/underflow
Note: This setting is ignored when channel 4 is in phase counting mode.
Table 10.10 TPSC0 to TPSC2 (channel 5)
Channel 5 Bit 2 TPSC2 0 Bit 1 TPSC1 0 Bit 0 TPSC0 0 1 1 0 1 1 0 0 1 1 0 1 Description Internal clock: counts on /1 Internal clock: counts on /4 Internal clock: counts on /16 Internal clock: counts on /64 External clock: counts on TCLKA pin input External clock: counts on TCLKC pin input Internal clock: counts on /256 External clock: counts on TCLKD pin input
Note: This setting is ignored when channel 5 is in phase counting mode.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.2
Timer Mode Register (TMDR)
The TMDR registers are used to set the operating mode of each channel. The TPU has six TMDR registers, one for each channel. TMDR register settings should be changed only when TCNT operation is stopped.
Bit 7, 6 5 Bit Name BFB Initial value All 1 0 R/W R/W Description Reserved These bits are always read as 1 and cannot be modified. Buffer Operation B Specifies whether TGRB is to operate in the normal way, or TGRB and TGRD are to be used together for buffer operation. When TGRD is used as a buffer register, TGRD input capture/output compare is not generated. In channels 1, 2, 4, and 5, which have no TGRD, bit 5 is reserved. It is always read as 0 and cannot be modified. 0: TGRB operates normally 1: TGRB and TGRD are used together for buffer operation 4 BFA 0 R/W Buffer Operation A Specifies whether TGRA is to operate in the normal way, or TGRA and TGRC are to be used together for buffer operation. When TGRC is used as a buffer register, TGRC input capture/output compare is not generated. In channels 1, 2, 4, and 5, which have no TGRC, bit 4 is reserved. It is always read as 0 and cannot be modified. 0: TGRA operates normally 1:TGRA and TGRC are used together for buffer operation 3 2 1 0 MD3 MD2 MD1 MD0 0 0 0 0 R/W R/W R/W R/W Modes 3 to 0 These bits are used to set the timer operating mode. MD3 is a reserved bit. In a write, it should always be written with 0. See table 10.11 for details.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.11 MD0 to MD3
Bit 3 MD3*1 0 Bit 2 MD2*2 0 Bit 1 MD1 0 Bit 0 MD0 0 1 1 0 1 1 0 0 1 1 0 1 1 X X X Description Normal operation Reserved PWM mode 1 PWM mode 2 Phase counting mode 1 Phase counting mode 2 Phase counting mode 3 Phase counting mode 4 --
Legend: X: Don't care Notes: 1. MD3 is a reserved bit. In a write, it should always be written with 0. 2. Phase counting mode cannot be set for channels 0 and 3. In this case, 0 should always be written to MD2.
10.3.3
Timer I/O Control Register (TIOR)
The TIOR registers control the TGR registers. The TPU has eight TIOR registers, two each for channels 0 and 3, and one each for channels 1, 2, 4, and 5. Care is required as TIOR is affected by the TMDR setting. The initial output specified by TIOR is valid when the counter is stopped (the CST bit in TSTR is cleared to 0). Note also that, in PWM mode 2, the output at the point at which the counter is cleared to 0 is specified. When TGRC or TGRD is designated for buffer operation, this setting is invalid and the register operates as a buffer register.
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Section 10 16-Bit Timer Pulse Unit (TPU)
* TIORH_0, TIOR_1, TIOR_2, TIORH_3, TIOR_4, TIOR_5
Bit 7 6 5 4 3 2 1 0 Bit Name IOB3 IOB2 IOB1 IOB0 IOA3 IOA2 IOA1 IOA0 Initial value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W I/O Control A3 to A0 Specify the function of TGRA. See tables 10.20, 10,22, 10.23, 10.24, 10.26, and 10.27 for details. Description I/O Control B3 to B0 Specify the function of TGRB. See tables 10.12, 10.14, 10.15, 10.16, 10.18, and 10.19 for details.
* TIORL_0, TIORL_3
Bit 7 6 5 4 3 2 1 0 Bit Name IOD3 IOD2 IOD1 IOD0 IOC3 IOC2 IOC1 IOC0 Initial value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W I/O Control C3 to C0 Specify the function of TGRC. See tables 10.21, and 10.25 for details. Description I/O Control D3 to D0 Specify the function of TGRD. See tables 10.13, and 10.17 for details.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.12 TIORH_0
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRB_0 Function Output compare register TIOCB0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB0 pin register Input capture at rising edge Capture input source is TIOCB0 pin Input capture at falling edge Capture input source is TIOCB0 pin Input capture at both edges Capture input source is channel 1/count clock Input capture at TCNT_1 count-up/count-down*
Legend: X: Don't care Note: * When the TPSC0 to TPSC2 bits in TCR_1 are set to B'000 and /1 is used as the TCNT_1 count clock, this setting is invalid and input capture is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.13 TIORL_0
Description Bit 7 IOD3 0 Bit 6 IOD2 0 Bit 5 IOD1 0 Bit 4 IOD0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRD_0 Function Output compare register*2 TIOCD0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCD0 pin register*2 Input capture at rising edge Capture input source is TIOCD0 pin Input capture at falling edge Capture input source is TIOCD0 pin Input capture at both edges Capture input source is channel 1/count clock Input capture at TCNT_1 count-up/count-down*1
Legend: X: Don't care Notes: 1. When the TPSC0 to TPSC2 bits in TCR_1 are set to B'000 and /1 is used as the TCNT_1 count clock, this setting is invalid and input capture is not generated. 2. When the BFB bit in TMDR_0 is set to 1 and TGRD_0 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.14 TIOR_1
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRB_1 Function Output compare register TIOCB1 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB1 pin register Input capture at rising edge Capture input source is TIOCB1 pin Input capture at falling edge Capture input source is TIOCB1 pin Input capture at both edges TGRC_0 compare match/ input capture Input capture at generation of TGRC_0 compare match/input capture
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.15 TIOR_2
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X TGRB_2 Function Output compare register TIOCB2 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB2 pin register Input capture at rising edge Capture input source is TIOCB2 pin Input capture at falling edge Capture input source is TIOCB2 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.16 TIORH_3
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRB_3 Function Output compare register TIOCB3 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB3 pin register Input capture at rising edge Capture input source is TIOCB3 pin Input capture at falling edge Capture input source is TIOCB3 pin Input capture at both edges Capture input source is channel 4/count clock Input capture at TCNT_4 count-up/count-down*
Legend: X: Don't care Note: * When the TPSC0 to TPSC2 bits in TCR_4 are set to B'000 and /1 is used as the TCNT_4 count clock, this setting is invalid and input capture is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.17 TIORL_3
Description Bit 7 IOD3 0 Bit 6 IOD2 0 Bit 5 IOD1 0 Bit 4 IOD0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRD_3 Function Output compare register*2 TIOCD3 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCD3 pin register*2 Input capture at rising edge Capture input source is TIOCD3 pin Input capture at falling edge Capture input source is TIOCD3 pin Input capture at both edges Capture input source is channel 4/count clock Input capture at TCNT_4 count-up/count-down*1
Legend: X: Don't care Notes: 1. When the TPSC0 to TPSC2 bits in TCR_4 are set to B'000 and /1 is used as the TCNT_4 count clock, this setting is invalid and input capture is not generated. 2. When the BFB bit in TMDR_3 is set to 1 and TGRD_3 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.18 TIOR_4
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRB_4 Function Output compare register TIOCB4 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB4 pin register Input capture at rising edge Capture input source is TIOCB4 pin Input capture at falling edge Capture input source is TIOCB4 pin Input capture at both edges Capture input source is TGRC_3 compare match/input capture Input capture at generation of TGRC_3 compare match/input capture
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.19 TIOR_5
Description Bit 7 IOB3 0 Bit 6 IOB2 0 Bit 5 IOB1 0 Bit 4 IOB0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X TGRB_5 Function Output compare register TIOCB5 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCB5 pin register Input capture at rising edge Capture input source is TIOCB5 pin Input capture at falling edge Capture input source is TIOCB5 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.20 TIORH_0
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRA_0 Function Output compare register TIOCA0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA0 pin register Input capture at rising edge Capture input source is TIOCA0 pin Input capture at falling edge Capture input source is TIOCA0 pin Input capture at both edges Capture input source is channel 1/count clock Input capture at TCNT_1 count-up/count-down
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.21 TIORL_0
Description Bit 3 IOC3 0 Bit 2 IOC2 0 Bit 1 IOC1 0 Bit 0 IOC0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRC_0 Function Output compare register* TIOCC0 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCC0 pin register* Input capture at rising edge Capture input source is TIOCC0 pin Input capture at falling edge Capture input source is TIOCC0 pin Input capture at both edges Capture input source is channel 1/count clock Input capture at TCNT_1 count-up/count-down
Legend: X: Don't care Note: * When the BFA bit in TMDR_0 is set to 1 and TGRC_0 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.22 TIOR_1
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRA_1 Function Output compare register TIOCA1 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA1 pin register Input capture at rising edge Capture input source is TIOCA1 pin Input capture at falling edge Capture input source is TIOCA1 pin Input capture at both edges Capture input source is TGRA_0 compare match/input capture Input capture at generation of channel 0/TGRA_0 compare match/input capture
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.23 TIOR_2
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X TGRA_2 Function Output compare register TIOCA2 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA2 pin register Input capture at rising edge Capture input source is TIOCA2 pin Input capture at falling edge Capture input source is TIOCA2 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.24 TIORH_3
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRA_3 Function Output compare register TIOCA3 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA3 pin register Input capture at rising edge Capture input source is TIOCA3 pin Input capture at falling edge Capture input source is TIOCA3 pin Input capture at both edges Capture input source is channel 4/count clock Input capture at TCNT_4 count-up/count-down
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.25 TIORL_3
Description Bit 3 IOC3 0 Bit 2 IOC2 0 Bit 1 IOC1 0 Bit 0 IOC0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRC_3 Function Output compare register* TIOCC3 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCC3 pin register* Input capture at rising edge Capture input source is TIOCC3 pin Input capture at falling edge Capture input source is TIOCC3 pin Input capture at both edges Capture input source is channel 4/count clock Input capture at TCNT_4 count-up/count-down
Legend: X: Don't care Note: * When the BFA bit in TMDR_3 is set to 1 and TGRC_3 is used as a buffer register, this setting is invalid and input capture/output compare is not generated.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.26 TIOR_4
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 1 X X X TGRA_4 Function Output compare register TIOCA4 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA4 pin register Input capture at rising edge Capture input source is TIOCA4 pin Input capture at falling edge Capture input source is TIOCA4 pin Input capture at both edges Capture input source is TGRA_3 compare match/input capture Input capture at generation of TGRA_3 compare match/input capture
Legend: X: Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.27 TIOR_5
Description Bit 3 IOA3 0 Bit 2 IOA2 0 Bit 1 IOA1 0 Bit 0 IOA0 0 1 1 0 1 1 0 0 1 1 0 1 1 X 0 0 1 1 Legend: X: Don't care X TGRA_5 Function Output compare register TIOCA5 Pin Function Output disabled Initial output is 0 0 output at compare match Initial output is 0 1 output at compare match Initial output is 0 Toggle output at compare match Output disabled Initial output is 1 0 output at compare match Initial output is 1 1 output at compare match Initial output is 1 Toggle output at compare match Input capture Capture input source is TIOCA5 pin register Input capture at rising edge Capture input source is TIOCA5 pin Input capture at falling edge Capture input source is TIOCA5 pin Input capture at both edges
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.4
Timer Interrupt Enable Register (TIER)
The TIER registers control enabling or disabling of interrupt requests for each channel. The TPU has six TIER registers, one for each channel.
Bit 7 Bit Name TTGE Initial value 0 R/W R/W Description A/D Conversion Start Request Enable Enables or disables generation of A/D conversion start requests by TGRA input capture/compare match. 0: A/D conversion start request generation disabled 1: A/D conversion start request generation enabled 6 5 TCIEU 1 0 R/W Reserved This bit is always read as 1 and cannot be modified. Underflow Interrupt Enable Enables or disables interrupt requests (TCIU) by the TCFU flag when the TCFU flag in TSR is set to 1 in channels 1, 2, 4, and 5. In channels 0 and 3, bit 5 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TCIU) by TCFU disabled 1: Interrupt requests (TCIU) by TCFU enabled 4 TCIEV 0 R/W Overflow Interrupt Enable Enables or disables interrupt requests (TCIV) by the TCFV flag when the TCFV flag in TSR is set to 1. 0: Interrupt requests (TCIV) by TCFV disabled 1: Interrupt requests (TCIV) by TCFV enabled 3 TGIED 0 R/W TGR Interrupt Enable D Enables or disables interrupt requests (TGID) by the TGFD bit when the TGFD bit in TSR is set to 1 in channels 0 and 3. In channels 1, 2, 4, and 5, bit 3 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TGID) by TGFD bit disabled 1: Interrupt requests (TGID) by TGFD bit enabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
Bit 2
Bit Name TGIEC
Initial value 0
R/W R/W
Description TGR Interrupt Enable C Enables or disables interrupt requests (TGIC) by the TGFC bit when the TGFC bit in TSR is set to 1 in channels 0 and 3. In channels 1, 2, 4, and 5, bit 2 is reserved. It is always read as 0 and cannot be modified. 0: Interrupt requests (TGIC) by TGFC bit disabled 1: Interrupt requests (TGIC) by TGFC bit enabled
1
TGIEB
0
R/W
TGR Interrupt Enable B Enables or disables interrupt requests (TGIB) by the TGFB bit when the TGFB bit in TSR is set to 1. 0: Interrupt requests (TGIB) by TGFB bit disabled 1: Interrupt requests (TGIB) by TGFB bit enabled
0
TGIEA
0
R/W
TGR Interrupt Enable A Enables or disables interrupt requests (TGIA) by the TGFA bit when the TGFA bit in TSR is set to 1. 0: Interrupt requests (TGIA) by TGFA bit disabled 1: Interrupt requests (TGIA) by TGFA bit enabled
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.5
Timer Status Register (TSR)
The TSR registers indicate the status of each channel. The TPU has six TSR registers, one for each channel.
Bit 7 Bit Name TCFD Initial value 1 R/W R Description Count Direction Flag Status flag that shows the direction in which TCNT counts in channels 1, 2, 4, and 5. In channels 0 and 3, bit 7 is reserved. It is always read as 1 and cannot be modified. 0: TCNT counts down 1: TCNT counts up 6 5 TCFU 1 0 Reserved This bit is always read as 1 and cannot be modified. R/(W)* Underflow Flag Status flag that indicates that TCNT underflow has occurred when channels 1, 2, 4, and 5 are set to phase counting mode. Only 0 can be written, for flag clearing. In channels 0 and 3, bit 5 is reserved. It is always read as 0 and cannot be modified. [Setting condition] When the TCNT value underflows (changes from H'0000 to H'FFFF) [Clearing condition] When 0 is written to TCFU after reading TCFU = 1 4 TCFV 0 R/(W)* Overflow Flag Status flag that indicates that TCNT overflow has occurred. Only 0 can be written, for flag clearing. [Setting condition] When the TCNT value overflows (changes from H'FFFF to H'0000 ) [Clearing condition] When 0 is written to TCFV after reading TCFV = 1
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Section 10 16-Bit Timer Pulse Unit (TPU)
Bit 3
Bit Name TGFD
Initial value 0
R/W
Description
R/(W)* Input Capture/Output Compare Flag D Status flag that indicates the occurrence of TGRD input capture or compare match in channels 0 and 3. Only 0 can be written, for flag clearing. In channels 1, 2, 4, and 5, bit 3 is reserved. It is always read as 0 and cannot be modified. [Setting conditions] * * When TCNT = TGRD and TGRD is functioning as output compare register When TCNT value is transferred to TGRD by input capture signal and TGRD is functioning as input capture register When DTC is activated by TGID interrupt, the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFD after reading TGFD = 1
[Clearing conditions] *
* 2 TGFC 0
R/(W)* Input Capture/Output Compare Flag C Status flag that indicates the occurrence of TGRC input capture or compare match in channels 0 and 3. Only 0 can be written, for flag clearing. In channels 1, 2, 4, and 5, bit 2 is reserved. It is always read as 0 and cannot be modified. [Setting conditions] * * When TCNT = TGRC and TGRC is functioning as output compare register When TCNT value is transferred to TGRC by input capture signal and TGRC is functioning as input capture register When DTC is activated by TGIC interrupt, the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFC after reading TGFC = 1
[Clearing conditions] *
*
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Section 10 16-Bit Timer Pulse Unit (TPU)
Bit 1
Bit Name TGFB
Initial value 0
R/W
Description
R/(W)* Input Capture/Output Compare Flag B Status flag that indicates the occurrence of TGRB input capture or compare match. Only 0 can be written, for flag clearing. [Setting conditions] * * When TCNT = TGRB and TGRB is functioning as output compare register When TCNT value is transferred to TGRB by input capture signal and TGRB is functioning as input capture register When DTC is activated by TGIB interrupt, the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFB after reading TGFB = 1
[Clearing conditions] *
* 0 TGFA 0
R/(W)* Input Capture/Output Compare Flag A Status flag that indicates the occurrence of TGRA input capture or compare match. Only 0 can be written, for flag clearing. [Setting conditions] * * When TCNT = TGRA and TGRA is functioning as output compare register When TCNT value is transferred to TGRA by input capture signal and TGRA is functioning as input capture register When DTC is activated by TGIA interrupt, the DISEL bit of MRB in DTC is 0 with the transfer counter other than 0 When 0 is written to TGFA after reading TGFA = 1
[Clearing conditions] *
* Note: *
Only 0 can be written to this bit to clear the flag.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.6
Timer Counter (TCNT)
The TCNT registers are 16-bit readable/writable counters. The TPU has six TCNT counters, one for each channel. The TCNT counters are initialized to H'0000 by a reset, and in hardware standby mode. The TCNT counters cannot be accessed in 8-bit units; they must always be accessed as a 16-bit unit. 10.3.7 Timer General Register (TGR)
The TGR registers are dual function 16-bit readable/writable registers, functioning as either output compare or input capture registers. The TPU has 16 TGR registers, four each for channels 0 and 3 and two each for channels 1, 2, 4, and 5. TGRC and TGRD for channels 0 and 3 can also be designated for operation as buffer registers. The TGR registers cannot be accessed in 8-bit units; they must always be accessed as a 16-bit unit. TGR buffer register combinations are TGRA-- TGRC and TGRB--TGRD. 10.3.8 Timer Start Register (TSTR)
TSTR specifies whether to operate or stop TCNT for channels 0 to 5. When setting the operating mode in TMDR or setting the count clock in TCR, first stop the TCNT counter.
Bit 7, 6 5 4 3 2 1 0 Bit Name CST5 CST4 CST3 CST2 CST1 CST0 Initial value All 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W Description Reserved Only 0 should be written to these bits. Counter Start 5 to 0 These bits specify whether to operate or stop TCNT. If 0 is written to the CST bit during operation with the TIOC pin designated for output, the counter stops but the TIOC pin output compare output level is retained. If TIOR is written to when the CST bit is cleared to 0, the pin output level will be changed to the set initial output value. 0: TCNT_0 to TCNT_5 count operation is stopped 1: TCNT_0 to TCNT_5 performs count operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.3.9
Timer Synchro Register (TSYR)
TSYR selects the independent operation or synchronous operation of TCNT for channels 0 to 5. A channel performs synchronous operation when the corresponding bit in TSYR is set to 1.
Bit 7, 6 5 4 3 2 1 0 Bit Name SYNC5 SYNC4 SYNC3 SYNC2 SYNC1 SYNC0 Initial value All 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W Description Reserved Only 0 should be written to these bits. Timer Synchro 5 to 0 These bits are used to select the independent or synchronized operation with other channels. When synchronous operation is selected, the TCNT synchronous presetting of multiple channels, and synchronous clearing by counter clearing on another channel, are possible. To set synchronous operation, the SYNC bits for at least two channels must be set to 1. To set synchronous clearing, in addition to the SYNC bit , the TCNT clearing source must also be set by means of the CCLR0 to CCLR2 bits in TCR. 0: TCNT_0 to TCNT_5 operates independently (TCNT presetting /clearing is unrelated to other channels) 1: TCNT_0 to TCNT_5 performs synchronous operation. TCNT synchronous presetting/synchronous clearing is possible.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.4
10.4.1
Operation
Basic Functions
Each channel has a TCNT and TGR register. TCNT performs up-counting, and is also capable of free-running operation, synchronous counting, and external event counting. Each TGR can be used as an input capture register or output compare register. Counter Operation: When one of the CST0 to CST5 bits is set to 1 in TSTR, the TCNT counter for the corresponding channel begins counting. TCNT can operate as a free-running counter, periodic counter, for example. 1. Example of count operation setting procedure Figure 10.2 shows an example of the count operation setting procedure.
[1] Select the counter clock with the TPSC2 to TPSC0 bits in TCR. At the same time, select the input clock edge with the CKEG1 and CKEG0 bits in TCR. [2] For periodic counter operation, select the TGR to be used as the TCNT clearing source with the CCLR2 to CCLR0 bits in TCR. [3] Designate the TGR selected in [2] as an output compare register by means of TIOR. [4] Set the periodic counter cycle in the TGR selected in [2]. [5] Set the CST bit in TSTR to 1 to start the counter operation.
Operation selection
Select counter clock
[1]
Periodic counter
Free-running counter
Select counter clearing source
[2]
[3] Select output compare register
Set period
[4]
Start count operation
[5]
Start count operation
[5]
Figure 10.2 Example of Counter Operation Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
2. Free-running count operation and periodic count operation Immediately after a reset, the TPU's TCNT counters are all designated as free-running counters. When the relevant bit in TSTR is set to 1 the corresponding TCNT counter starts upcount operation as a free-running counter. When TCNT overflows (from H'FFFF to H'0000), the TCFV bit in TSR is set to 1. If the value of the corresponding TCIEV bit in TIER is 1 at this point, the TPU requests an interrupt. After overflow, TCNT starts counting up again from H'0000. Figure 10.3 illustrates free-running counter operation.
TCNT value H'FFFF
H'0000
Time
CST bit
TCFV
Figure 10.3 Free-Running Counter Operation When compare match is selected as the TCNT clearing source, the TCNT counter for the relevant channel performs periodic count operation. The TGR register for setting the period is designated as an output compare register, and counter clearing by compare match is selected by means of the CCLR0 to CCLR2 bits in TCR. After the settings have been made, TCNT starts up-count operation as a periodic counter when the corresponding bit in TSTR is set to 1. When the count value matches the value in TGR, the TGF bit in TSR is set to 1 and TCNT is cleared to H'0000. If the value of the corresponding TGIE bit in TIER is 1 at this point, the TPU requests an interrupt. After a compare match, TCNT starts counting up again from H'0000. Figure 10.4 illustrates periodic counter operation.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value TGR
Counter cleared by TGR compare match
H'0000
Time
CST bit Flag cleared by software or DTC activation TGF
Figure 10.4 Periodic Counter Operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
Waveform Output by Compare Match: The TPU can perform 0, 1, or toggle output from the corresponding output pin using compare match. 1. Example of setting procedure for waveform output by compare match Figure 10.5 shows an example of the setting procedure for waveform output by compare match.
[1] Select initial value 0 output or 1 output, and compare match output value 0 output, 1 output, or toggle output, by means of TIOR. The set initial value is output at the TIOC pin unit the first compare match occurs. [2] Set the timing for compare match generation in TGR. [3] Set the CST bit in TSTR to 1 to start the count operation.
Output selection
Select waveform output mode
[1]
Set output timing
[2]
Start count operation
[3]

Figure 10.5 Example of Setting Procedure for Waveform Output by Compare Match 2. Examples of waveform output operation Figure 10.6 shows an example of 0 output/1 output. In this example TCNT has been designated as a free-running counter, and settings have been made such that 1 is output by compare match A, and 0 is output by compare match B. When the set level and the pin level coincide, the pin level does not change.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value H'FFFF TGRA TGRB H'0000 No change TIOCA TIOCB No change No change No change 1 output 0 output Time
Figure 10.6 Example of 0 Output/1 Output Operation Figure 10.7 shows an example of toggle output. In this example, TCNT has been designated as a periodic counter (with counter clearing on compare match B), and settings have been made such that the output is toggled by both compare match A and compare match B.
TCNT value Counter cleared by TGRB compare match H'FFFF TGRB TGRA H'0000 Time Toggle output Toggle output
TIOCB TIOCA
Figure 10.7 Example of Toggle Output Operation Input Capture Function: The TCNT value can be transferred to TGR on detection of the TIOC pin input edge. Rising edge, falling edge, or both edges can be selected as the detected edge. For channels 0, 1, 3, and 4, it is also possible to specify another channel's counter input clock or compare match signal as the input capture source. Note: When another channel's counter input clock is used as the input capture input for channels 0 and 3, /1 should not be selected as the counter input clock used for input capture input. Input capture will not be generated if /1 is selected.
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Section 10 16-Bit Timer Pulse Unit (TPU)
1. Example of input capture operation setting procedure Figure 10.8 shows an example of the input capture operation setting procedure.
[1] Designate TGR as an input capture register by means of TIOR, and select rising edge, falling edge, or both edges as the input capture source and input signal edge. [2] Set the CST bit in TSTR to 1 to start the count operation. [1]
Input selection
Select input capture input
Start count
[2]

Figure 10.8 Example of Input Capture Operation Setting Procedure 2. Example of input capture operation Figure 10.9 shows an example of input capture operation. In this example both rising and falling edges have been selected as the TIOCA pin input capture input edge, the falling edge has been selected as the TIOCB pin input capture input edge, and counter clearing by TGRB input capture has been designated for TCNT.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value H'0180 H'0160
Counter cleared by TIOCB input (falling edge)
H'0010 H'0005 H'0000 Time
TIOCA
TGRA
H'0005
H'0160
H'0010
TIOCB TGRB H'0180
Figure 10.9 Example of Input Capture Operation 10.4.2 Synchronous Operation
In synchronous operation, the values in a number of TCNT counters can be rewritten simultaneously (synchronous presetting). Also, a number of TCNT counters can be cleared simultaneously by making the appropriate setting in TCR (synchronous clearing). Synchronous operation enables TGR to be incremented with respect to a single time base. Channels 0 to 5 can all be designated for synchronous operation. Example of Synchronous Operation Setting Procedure: Figure 10.10 shows an example of the synchronous operation setting procedure.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Synchronous operation selection Set synchronous operation [1]
Synchronous presetting
Synchronous clearing
Set TCNT
[2]
Clearing source generation channel? Yes Select counter clearing source Start count
No
[3]
Set synchronous counter clearing Start count
[4]
[5]
[5]

[1] Set to 1 the SYNC bits in TSYR corresponding to the channels to be designated for synchronous operation. [2] When the TCNT counter of any of the channels designated for synchronous operation is written to, the same value is simultaneously written to the other TCNT counters. [3] Use the CCLR2 to CCLR0 bits in TCR to specify TCNT clearing by input capture/output compare, etc. [4] Use the CCLR2 to CCLR0 bits in TCR to designate synchronous clearing for the counter clearing source. [5] Set to 1 the CST bits in TSTR for the relevant channels, to start the count operation.
Figure 10.10 Example of Synchronous Operation Setting Procedure Example of Synchronous Operation: Figure 10.11 shows an example of synchronous operation. In this example, synchronous operation and PWM mode 1 have been designated for channels 0 to 2, TGRB_0 compare match has been set as the channel 0 counter clearing source, and synchronous clearing has been set for the channel 1 and 2 counter clearing source. Three-phase PWM waveforms are output from pins TIOCA0, TIOCA1, and TIOCA2. At this time, synchronous presetting, and synchronous clearing by TGRB_0 compare match, are performed for channel 0 to 2 TCNT counters, and the data set in TGRB_0 is used as the PWM cycle. For details of PWM modes, see section 10.4.5, PWM Modes.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Synchronous clearing by TGRB_0 compare match TCNT0 to TCNT2 values TGRB_0 TGRB_1 TGRA_0 TGRB_2 TGRA_1 TGRA_2 H'0000 Time
TIOCA0 TIOCA1 TIOCA2
Figure 10.11 Example of Synchronous Operation 10.4.3 Buffer Operation
Buffer operation, provided for channels 0 and 3, enables TGRC and TGRD to be used as buffer registers. Buffer operation differs depending on whether TGR has been designated as an input capture register or as a compare match register. Table 10.28 shows the register combinations used in buffer operation. Table 10.28 Register Combinations in Buffer Operation
Channel 0 Timer General Register TGRA_0 TGRB_0 3 TGRA_3 TGRB_3 Buffer Register TGRC_0 TGRD_0 TGRC_3 TGRD_3
* When TGR is an output compare register When a compare match occurs, the value in the buffer register for the corresponding channel is transferred to the timer general register.
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Section 10 16-Bit Timer Pulse Unit (TPU)
This operation is illustrated in figure 10.12.
Compare match signal
Buffer register
Timer general register
Comparator
TCNT
Figure 10.12 Compare Match Buffer Operation * When TGR is an input capture register When input capture occurs, the value in TCNT is transferred to TGR and the value previously held in the timer general register is transferred to the buffer register. This operation is illustrated in figure 10.13.
Input capture signal
Buffer register
Timer general register
TCNT
Figure 10.13 Input Capture Buffer Operation Example of Buffer Operation Setting Procedure: Figure 10.14 shows an example of the buffer operation setting procedure.
Buffer operation
Select TGR function
[1]
[1] Designate TGR as an input capture register or output compare register by means of TIOR. [2] Designate TGR for buffer operation with the BFA and BFB bits in TMDR. [3] Set the CST bit in TSTR to 1 start the count operation.
Set buffer operation
[2]
Start count
[3]

Figure 10.14 Example of Buffer Operation Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
Examples of Buffer Operation 1. When TGR is an output compare register Figure 10.15 shows an operation example in which PWM mode 1 has been designated for channel 0, and buffer operation has been designated for TGRA and TGRC. The settings used in this example are TCNT clearing by compare match B, 1 output at compare match A, and 0 output at compare match B. As buffer operation has been set, when compare match A occurs the output changes and the value in buffer register TGRC is simultaneously transferred to timer general register TGRA. This operation is repeated each time that compare match A occurs. For details of PWM modes, see section 10.4.5, PWM Modes.
TCNT value TGRB_0 H'0200 TGRA_0 H'0000 TGRC_0 H'0200 Transfer TGRA_0 H'0200 H'0450 H'0450 H'0520 Time H'0520
H'0450
TIOCA
Figure 10.15 Example of Buffer Operation (1) 2. When TGR is an input capture register Figure 10.16 shows an operation example in which TGRA has been designated as an input capture register, and buffer operation has been designated for TGRA and TGRC. Counter clearing by TGRA input capture has been set for TCNT, and both rising and falling edges have been selected as the TIOCA pin input capture input edge. As buffer operation has been set, when the TCNT value is stored in TGRA upon the occurrence of input capture A, the value previously stored in TGRA is simultaneously transferred to TGRC.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value H'0F07 H'09FB H'0532 H'0000 Time
TIOCA
TGRA
H'0532
H'0F07
H'09FB
TGRC
H'0532
H'0F07
Figure 10.16 Example of Buffer Operation (2) 10.4.4 Cascaded Operation
In cascaded operation, two 16-bit counters for different channels are used together as a 32-bit counter. This function works by counting the channel 1 (channel 4) counter clock upon overflow/underflow of TCNT_2 (TCNT_5) as set in the TPSC0 to TPSC2 bits in TCR. Underflow occurs only when the lower 16-bit TCNT is in phase-counting mode. Table 10.29 shows the register combinations used in cascaded operation. Note: When phase counting mode is set for channel 1 or 4, the counter clock setting is invalid and the counters operates independently in phase counting mode. Table 10.29 Cascaded Combinations
Combination Channels 1 and 2 Channels 4 and 5 Upper 16 Bits TCNT_1 TCNT_4 Lower 16 Bits TCNT_2 TCNT_5
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Section 10 16-Bit Timer Pulse Unit (TPU)
Example of Cascaded Operation Setting Procedure: Figure 10.17 shows an example of the setting procedure for cascaded operation.
Cascaded operation
Set cascading
[1]
[1] Set the TPSC2 to TPSC0 bits in the channel 1 (channel 4) TCR to B'1111 to select TCNT_2 (TCNT_5) overflow/underflow counting. [2] Set the CST bit in TSTR for the upper and lower channel to 1 to start the count operation.
Start count
[2]

Figure 10.17 Cascaded Operation Setting Procedure Examples of Cascaded Operation: Figure 10.18 illustrates the operation when TCNT_2 overflow/underflow counting has been set for TCNT_1, when TGRA_1 and TGRA_2 have been designated as input capture registers, and when TIOC pin rising edge has been selected. When a rising edge is input to the TIOCA1 and TIOCA2 pins simultaneously, the upper 16 bits of the 32-bit data are transferred to TGRA_1, and the lower 16 bits to TGRA_2.
TCNT_1 clock TCNT_1 TCNT_2 clock TCNT_2 TIOCA1, TIOCA2 TGRA_1 H'03A2 H'FFFF H'0000 H'0001 H'03A1 H'03A2
TGRA_2
H'0000
Figure 10.18 Example of Cascaded Operation (1) Figure 10.19 illustrates the operation when TCNT_2 overflow/underflow counting has been set for TCNT_1 and phase counting mode has been designated for channel 2.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT_1 is incremented by TCNT_2 overflow and decremented by TCNT_2 underflow.
TCLKA
TCLKB TCNT_2 FFFD FFFE FFFF 0000 0001 0002 0001 0000 FFFF
TCNT_1
0000
0001
0000
Figure 10.19 Example of Cascaded Operation (2) 10.4.5 PWM Modes
In PWM mode, PWM waveforms are output from the output pins. The output level can be selected as 0, 1, or toggle output in response to a compare match of each TGR. TGR registers settings can be used to output a PWM waveform in the range of 0% to 100% duty. Designating TGR compare match as the counter clearing source enables the period to be set in that register. All channels can be designated for PWM mode independently. Synchronous operation is also possible. There are two PWM modes, as described below. * PWM mode 1 PWM output is generated from the TIOCA and TIOCC pins by pairing TGRA with TGRB and TGRC with TGRD. The output specified by the IOA0 to IOA3 bits and IOC0 to IOC3 bits in TIOR is output from the TIOCA and TIOCC pins at compare matches A and C, and the output specified by the IOB0 to IOB3 bits and IOD0 to IOD3 bits in TIOR is output at compare matches B and D. The initial output value is the value set in TGRA or TGRC. If the set values of paired TGRs are identical, the output value does not change when a compare match occurs. In PWM mode 1, a maximum 8-phase PWM output is possible. * PWM mode 2 PWM output is generated using one TGR as the cycle register and the others as duty registers. The output specified in TIOR is performed by means of compare matches. Upon counter clearing by a synchronization register compare match, the output value of each pin is the initial value set in TIOR. If the set values of the cycle and duty registers are identical, the output value does not change when a compare match occurs.
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Section 10 16-Bit Timer Pulse Unit (TPU)
In PWM mode 2, a maximum 15-phase PWM output is possible in combination use with synchronous operation. The correspondence between PWM output pins and registers is shown in table 10.30. Table 10.30 PWM Output Registers and Output Pins
Output Pins Channel 0 Registers TGRA_0 TGRB_0 TGRC_0 TGRD_0 1 TGRA_1 TGRB_1 2 TGRA_2 TGRB_2 3 TGRA_3 TGRB_3 TGRC_3 TGRD_3 4 TGRA_4 TGRB_4 5 TGRA_5 TGRB_5 TIOCA5 TIOCA4 TIOCC3 TIOCA3 TIOCA2 TIOCA1 TIOCC0 PWM Mode 1 TIOCA0 PWM Mode 2 TIOCA0 TIOCB0 TIOCC0 TIOCD0 TIOCA1 TIOCB1 TIOCA2 TIOCB2 TIOCA3 TIOCB3 TIOCC3 TIOCD3 TIOCA4 TIOCB4 TIOCA5 TIOCB5
Note: In PWM mode 2, PWM output is not possible for the TGR register in which the period is set.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Example of PWM Mode Setting Procedure: Figure 10.20 shows an example of the PWM mode setting procedure.
PWM mode
Select counter clock
[1]
Select counter clearing source
[2]
Select waveform output level
[3]
[1] Select the counter clock with the TPSC2 to TPSC0 bits in TCR. At the same time, select the input clock edge with the CKEG1 and CKEG0 bits in TCR. [2] Use the CCLR2 to CCLR0 bits in TCR to select the TGR to be used as the TCNT clearing source. [3] Use TIOR to designate the TGR as an output compare register, and select the initial value and output value. [4] Set the cycle in the TGR selected in [2], and set the duty in the other the TGR. [5] Select the PWM mode with the MD3 to MD0 bits in TMDR. [6] Set the CST bit in TSTR to 1 start the count operation.
Set TGR
[4]
Set PWM mode
[5]
Start count
[6]

Figure 10.20 Example of PWM Mode Setting Procedure Examples of PWM Mode Operation: Figure 10.21 shows an example of PWM mode 1 operation. In this example, TGRA compare match is set as the TCNT clearing source, 0 is set for the TGRA initial output value and output value, and 1 is set as the TGRB output value. In this case, the value set in TGRA is used as the period, and the values set in the TGRB registers are used as the duty levels.
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT value TGRA
Counter cleared by TGRA compare match
TGRB H'0000 Time
TIOCA
Figure 10.21 Example of PWM Mode Operation (1) Figure 10.22 shows an example of PWM mode 2 operation. In this example, synchronous operation is designated for channels 0 and 1, TGRB_1 compare match is set as the TCNT clearing source, and 0 is set for the initial output value and 1 for the output value of the other TGR registers (TGRA_0 to TGRD_0, TGRA_1), outputting a 5-phase PWM waveform. In this case, the value set in TGRB_1 is used as the cycle, and the values set in the other TGRs are used as the duty levels.
Counter cleared by TGRB_1 compare match
TCNT value TGRB_1 TGRA_1 TGRD_0 TGRC_0 TGRB_0 TGRA_0 H'0000
Time TIOCA0
TIOCB0
TIOCC0
TIOCD0
TIOCA1
Figure 10.22 Example of PWM Mode Operation (2)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Figure 10.23 shows examples of PWM waveform output with 0% duty and 100% duty in PWM mode.
TCNT value TGRB rewritten TGRA
TGRB H'0000
TGRB rewritten
TGRB rewritten Time
TIOCA
0% duty
Output does not change when cycle register and duty register compare matches occur simultaneously TCNT value TGRB rewritten TGRA TGRB rewritten TGRB H'0000 100% duty TGRB rewritten Time
TIOCA
Output does not change when cycle register and duty register compare matches occur simultaneously TCNT value TGRB rewritten TGRA TGRB rewritten
TGRB H'0000 100% duty 0% duty
TGRB rewritten Time
TIOCA
Figure 10.23 Example of PWM Mode Operation (3)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.4.6
Phase Counting Mode
In phase counting mode, the phase difference between two external clock inputs is detected and TCNT is incremented/decremented accordingly. This mode can be set for channels 1, 2, 4, and 5. When phase counting mode is set, an external clock is selected as the counter input clock and TCNT operates as an up/down-counter regardless of the setting of the TPSC0 to TPSC2 bits and CKEG0 and CKEG1 bits in TCR. However, the functions of the CCLR0 and CCLR1 bits in TCR, and of TIOR, TIER, and TGR, are valid, and input capture/compare match and interrupt functions can be used. This can be used for two-phase encoder pulse input. If overflow occurs when TCNT is counting up, the TCFV flag in TSR is set; if underflow occurs when TCNT is counting down, the TCFU flag is set. The TCFD bit in TSR is the count direction flag. Reading the TCFD flag reveals whether TCNT is counting up or down. Table 10.31 shows the correspondence between external clock pins and channels. Table 10.31 Phase Counting Mode Clock Input Pins
External Clock Pins Channels When channel 1 or 5 is set to phase counting mode When channel 2 or 4 is set to phase counting mode A-Phase TCLKA TCLKC B-Phase TCLKB TCLKD
Example of Phase Counting Mode Setting Procedure: Figure 10.24 shows an example of the phase counting mode setting procedure.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Phase counting mode
[1] Select phase counting mode with the MD3 to MD0 bits in TMDR. [2] Set the CST bit in TSTR to 1 to start the count operation. [1]
Select phase counting mode
Start count
[2]

Figure 10.24 Example of Phase Counting Mode Setting Procedure
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Section 10 16-Bit Timer Pulse Unit (TPU)
Examples of Phase Counting Mode Operation: In phase counting mode, TCNT counts up or down according to the phase difference between two external clocks. There are four modes, according to the count conditions. 1. Phase counting mode 1 Figure 10.25 shows an example of phase counting mode 1 operation, and table 10.32 summarizes the TCNT up/down-count conditions.
TCLKA (channels 1 and 5) TCLKC (channels 2 and 4) TCLKB (channels 1 and 5) TCLKD (channels 2 and 4) TCNT value
Up-count
Down-count
Time
Figure 10.25 Example of Phase Counting Mode 1 Operation Table 10.32 Up/Down-Count Conditions in Phase Counting Mode 1
TCLKA (Channels 1 and 5) TCLKC (Channels 2 and 4) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channels 1 and 5) TCLKD (Channels 2 and 4) Operation Up-count Up-count Up-count Up-count Down-count Down-count Down-count Down-count
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Section 10 16-Bit Timer Pulse Unit (TPU)
2. Phase counting mode 2 Figure 10.26 shows an example of phase counting mode 2 operation, and table 10.33 summarizes the TCNT up/down-count conditions.
TCLKA (channels 1 and 5) TCLKC (channels 2 and 4) TCLKB (channels 1 and 5) TCLKD (channels 2 and 4) TCNT value Up-count Down-count
Time
Figure 10.26 Example of Phase Counting Mode 2 Operation Table 10.33 Up/Down-Count Conditions in Phase Counting Mode 2
TCLKA (Channels 1 and 5) TCLKC (Channels 2 and 4) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channels 1 and 5) TCLKD (Channels 2 and 4) Operation Don't care Don't care Don't care Up-count Don't care Don't care Don't care Down-count
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Section 10 16-Bit Timer Pulse Unit (TPU)
3. Phase counting mode 3 Figure 10.27 shows an example of phase counting mode 3 operation, and table 10.34 summarizes the TCNT up/down-count conditions.
TCLKA (channels 1 and 5) TCLKC (channels 2 and 4) TCLKB (channels 1 and 5) TCLKD (channels 2 and 4) TCNT value
Up-count
Down-count
Time
Figure 10.27 Example of Phase Counting Mode 3 Operation Table 10.34 Up/Down-Count Conditions in Phase Counting Mode 3
TCLKA (Channels 1 and 5) TCLKC (Channels 2 and 4) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channels 1 and 5) TCLKD (Channels 2 and 4) Operation Don't care Don't care Don't care Up-count Down-count Don't care Don't care Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
4. Phase counting mode 4 Figure 10.28 shows an example of phase counting mode 4 operation, and table 10.35 summarizes the TCNT up/down-count conditions.
TCLKA (channels 1 and 5) TCLKC (channels 2 and 4) TCLKB (channels 1 and 5) TCLKD (channels 2 and 4) TCNT value
Up-count
Down-count
Time
Figure 10.28 Example of Phase Counting Mode 4 Operation Table 10.35 Up/Down-Count Conditions in Phase Counting Mode 4
TCLKA (Channels 1 and 5) TCLKC (Channels 2 and 4) High level Low level Low level High level High level Low level High level Low level Legend: : Rising edge : Falling edge TCLKB (Channels 1 and 5) TCLKD (Channels 2 and 4) Operation Up-count Up-count Don't care Don't care Down-count Down-count Don't care Don't care
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Section 10 16-Bit Timer Pulse Unit (TPU)
Phase Counting Mode Application Example: Figure 10.29 shows an example in which channel 1 is in phase counting mode, and channel 1 is coupled with channel 0 to input servo motor 2-phase encoder pulses in order to detect position or speed. Channel 1 is set to phase counting mode 1, and the encoder pulse A-phase and B-phase are input to TCLKA and TCLKB. Channel 0 operates with TCNT counter clearing by TGRC_0 compare match; TGRA_0 and TGRC_0 are used for the compare match function and are set with the speed control period and position control period. TGRB_0 is used for input capture, with TGRB_0 and TGRD_0 operating in buffer mode. The channel 1 counter input clock is designated as the TGRB_0 input capture source, and the pulse widths of 2-phase encoder 4-multiplication pulses are detected. TGRA_1 and TGRB_1 for channel 1 are designated for input capture, and channel 0 TGRA_0 and TGRC_0 compare matches are selected as the input capture source and store the up/down-counter values for the control periods. This procedure enables the accurate detection of position and speed.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Channel 1 TCLKA TCLKB Edge detection circuit TCNT_1
TGRA_1 (speed period capture) TGRB_1 (position period capture)
TCNT_0 + + -
TGRA_0 (speed control period) TGRC_0 (position control period)
TGRB_0 (pulse width capture)
TGRD_0 (buffer operation) Channel 0
Figure 10.29 Phase Counting Mode Application Example
10.5
Interrupts
There are three kinds of TPU interrupt source; TGR input capture/compare match, TCNT overflow, and TCNT underflow. Each interrupt source has its own status flag and enable/disabled bit, allowing the generation of interrupt request signals to be enabled or disabled individually. When an interrupt request is generated, the corresponding status flag in TSR is set to 1. If the corresponding enable/disable bit in TIER is set to 1 at this time, an interrupt is requested. The interrupt request is cleared by clearing the status flag to 0. Relative channel priorities can be changed by the interrupt controller, however the priority order within a channel is fixed. For details, see section 5, Interrupt Controller.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Table 10.36 lists the TPU interrupt sources. Table 10.36 TPU Interrupts
Channel 0 Name TGI0A TGI0B TGI0C TGI0D TCI0V 1 TGI1A TGI1B TCI1V TCI1U 2 TGI2A TGI2B TCI2V TCI2U 3 TGI3A TGI3B TGI3C TGI3D TCI3V 4 TGI4A TGI4B TCI4V TCI4U 5 TGI5A TGI5B TCI5V TCI5U Interrupt Source TGRA_0 input capture/compare match TGRB_0 input capture/compare match TGRC_0 input capture/compare match TGRD_0 input capture/compare match TCNT_0 overflow TGRA_1 input capture/compare match TGRB_1 input capture/compare match TCNT_1 overflow TCNT_1 underflow TGRA_2 input capture/compare match TGRB_2 input capture/compare match TCNT_2 overflow TCNT_2 underflow TGRA_3 input capture/compare match TGRB_3 input capture/compare match TGRC_3 input capture/compare match TGRD_3 input capture/compare match TCNT_3 overflow TGRA_4 input capture/compare match TGRB_4 input capture/compare match TCNT_4 overflow TCNT_4 underflow TGRA_5 input capture/compare match TGRB_5 input capture/compare match TCNT_5 overflow TCNT_5 underflow DTC Interrupt Flag Activation TGFA_0 TGFB_0 TGFC_0 TGFD_0 TCFV_0 TGFA_1 TGFB_1 TCFV_1 TCFU_1 TGFA_2 TGFB_2 TCFV_2 TCFU_2 TGFA_3 TGFB_3 TGFC_3 TGFD_3 TCFV_3 TGFA_4 TGFB_4 TCFV_4 TCFU_4 TGFA_5 TGFB_5 TCFV_5 TCFU_5 Possible Possible Possible Possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Possible Possible Possible Possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible
Note: This table shows the initial state immediately after a reset. The relative channel priorities can be changed by the interrupt controller.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Input Capture/Compare Match Interrupt: An interrupt is requested if the TGIE bit in TIER is set to 1 when the TGF flag in TSR is set to 1 by the occurrence of a TGR input capture/compare match on a particular channel. The interrupt request is cleared by clearing the TGF flag to 0. The TPU has 16 input capture/compare match interrupts, four each for channels 0 and 3, and two each for channels 1, 2, 4, and 5. Overflow Interrupt: An interrupt is requested if the TCIEV bit in TIER is set to 1 when the TCFV flag in TSR is set to 1 by the occurrence of TCNT overflow on a channel. The interrupt request is cleared by clearing the TCFV flag to 0. The TPU has six overflow interrupts, one for each channel. Underflow Interrupt: An interrupt is requested if the TCIEU bit in TIER is set to 1 when the TCFU flag in TSR is set to 1 by the occurrence of TCNT underflow on a channel. The interrupt request is cleared by clearing the TCFU flag to 0. The TPU has four underflow interrupts, one each for channels 1, 2, 4, and 5.
10.6
DTC Activation
The DTC can be activated by the TGR input capture/compare match interrupt for a channel. For details, see section 8, Data Transfer Controller (DTC). A total of 16 TPU input capture/compare match interrupts can be used as DTC activation sources, four each for channels 0 and 3, and two each for channels 1, 2, 4, and 5.
10.7
A/D Converter Activation
The A/D converter can be activated by the TGRA input capture/compare match for a channel. If the TTGE bit in TIER is set to 1 when the TGFA flag in TSR is set to 1 by the occurrence of a TGRA input capture/compare match on a particular channel, a request to begin A/D conversion is sent to the A/D converter. If the TPU conversion start trigger has been selected on the A/D converter side at this time, A/D conversion is begun. In the TPU, a total of six TGRA input capture/compare match interrupts can be used as A/D converter conversion start sources, one for each channel.
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.8
10.8.1
Operation Timing
Input/Output Timing
TCNT Count Timing: Figure 10.30 shows TCNT count timing in internal clock operation, and figure 10.31 shows TCNT count timing in external clock operation.
Internal clock
Falling edge
Rising edge
TCNT input clock TCNT N-1 N N+1 N+2
Figure 10.30 Count Timing in Internal Clock Operation
External clock
Falling edge
Rising edge
Falling edge
TCNT input clock TCNT N-1 N N+1 N+2
Figure 10.31 Count Timing in External Clock Operation
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Section 10 16-Bit Timer Pulse Unit (TPU)
Output Compare Output Timing: A compare match signal is generated in the final state in which TCNT and TGR match (the point at which the count value matched by TCNT is updated). When a compare match signal is generated, the output value set in TIOR is output at the output compare output pin. After a match between TCNT and TGR, the compare match signal is not generated until the TCNT input clock is generated. Figure 10.32 shows output compare output timing.
TCNT input clock N N+1
TCNT
TGR
N
Compare match signal TIOC pin
Figure 10.32 Output Compare Output Timing Input Capture Signal Timing: Figure 10.33 shows input capture signal timing.
Input capture input Input capture signal
TCNT
N
N+1
N+2
TGR
N
N+2
Figure 10.33 Input Capture Input Signal Timing
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Section 10 16-Bit Timer Pulse Unit (TPU)
Timing for Counter Clearing by Compare Match/Input Capture: Figure 10.34 shows the timing when counter clearing on compare match is specified, and figure 10.35 shows the timing when counter clearing on input capture is specified.
Compare match signal Counter clear signal
TCNT
N
H'0000
TGR
N
Figure 10.34 Counter Clear Timing (Compare Match)
Input capture signal
Counter clear signal
TCNT
N
H'0000
TGR
N
Figure 10.35 Counter Clear Timing (Input Capture)
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Section 10 16-Bit Timer Pulse Unit (TPU)
Buffer Operation Timing: Figures 10.36 and 10.37 show the timing in buffer operation.
TCNT
n
n+1
Compare match signal TGRA, TGRB TGRC, TGRD
n
N
N
Figure 10.36 Buffer Operation Timing (Compare Match)
Input capture signal
TCNT
N
N+1
TGRA, TGRB TGRC, TGRD
n
N
N+1
n
N
Figure 10.37 Buffer Operation Timing (Input Capture)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.8.2
Interrupt Signal Timing
TGF Flag Setting Timing in Case of Compare Match: Figure 10.38 shows the timing for setting of the TGF flag in TSR on compare match, and TGI interrupt request signal timing.
TCNT input clock
TCNT
N
N+1
TGR
N
Compare match signal
TGF flag
TGI interrupt
Figure 10.38 TGI Interrupt Timing (Compare Match) TGF Flag Setting Timing in Case of Input Capture: Figure 10.39 shows the timing for setting of the TGF flag in TSR on input capture, and TGI interrupt request signal timing.
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Section 10 16-Bit Timer Pulse Unit (TPU)
Input capture signal
TCNT
N
TGR
N
TGF flag
TGI interrupt
Figure 10.39 TGI Interrupt Timing (Input Capture) TCFV Flag/TCFU Flag Setting Timing: Figure 10.40 shows the timing for setting of the TCFV flag in TSR on overflow, and TCIV interrupt request signal timing. Figure 10.41 shows the timing for setting of the TCFU flag in TSR on underflow, and TCIU interrupt request signal timing.
TCNT input clock TCNT (overflow) Overflow signal
H'FFFF
H'0000
TCFV flag
TCIV interrupt
Figure 10.40 TCIV Interrupt Setting Timing
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Section 10 16-Bit Timer Pulse Unit (TPU)
TCNT input clock TCNT (underflow) Underflow signal
H'0000
H'FFFF
TCFU flag
TCIU interrupt
Figure 10.41 TCIU Interrupt Setting Timing
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Section 10 16-Bit Timer Pulse Unit (TPU)
Status Flag Clearing Timing: After a status flag is read as 1 by the CPU, it is cleared by writing 0 to it. When the DTC is activated, the flag is cleared automatically. Figure 10.42 shows the timing for status flag clearing by the CPU, and figure 10.43 shows the timing for status flag clearing by the DTC.
TSR write cycle T1 T2
Address
TSR address
Write signal
Status flag
Interrupt request signal
Figure 10.42 Timing for Status Flag Clearing by CPU
DTC read cycle T1 T2 DTC write cycle T1 T2
Address
Source address
Destination address
Status flag
Interrupt request signal
Figure 10.43 Timing for Status Flag Clearing by DTC Activation
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9
10.9.1
Usage Notes
Module Stop Mode Setting
TPU operation can be disabled or enabled using the module stop control register. The initial setting is for TPU operation to be halted. Register access is enabled by clearing module stop mode. For details, see section 22, Power-Down Modes. 10.9.2 Input Clock Restrictions
The input clock pulse width must be at least 1.5 states in the case of single-edge detection, and at least 2.5 states in the case of both-edge detection. The TPU will not operate properly at narrower pulse widths. In phase counting mode, the phase difference and overlap between the two input clocks must be at least 1.5 states, and the pulse width must be at least 2.5 states. Figure 10.44 shows the input clock conditions in phase counting mode.
Phase Phase differdifference Overlap ence
Overlap TCLKA (TCLKC) TCLKB (TCLKD)
Pulse width
Pulse width
Pulse width
Pulse width
Notes: Phase difference and overlap : 1.5 states or more Pulse width : 2.5 states or more
Figure 10.44 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.3
Caution on Period Setting
When counter clearing on compare match is set, TCNT is cleared in the final state in which it matches the TGR value (the point at which the count value matched by TCNT is updated). Consequently, the actual counter frequency is given by the following formula: f= Where (N + 1) f : Counter frequency : Operating frequency N : TGR set value Contention between TCNT Write and Clear Operations
10.9.4
If the counter clear signal is generated in the T2 state of a TCNT write cycle, TCNT clearing takes precedence and the TCNT write is not performed. Figure 10.45 shows the timing in this case.
TCNT write cycle T2 T1
Address
TCNT address
Write signal Counter clear signal
TCNT
N
H'0000
Figure 10.45 Contention between TCNT Write and Clear Operations
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.5
Contention between TCNT Write and Increment Operations
If incrementing occurs in the T2 state of a TCNT write cycle, the TCNT write takes precedence and TCNT is not incremented. Figure 10.46 shows the timing in this case.
TCNT write cycle T1 T2
Address
TCNT address
Write signal TCNT input clock N TCNT write data M
TCNT
Figure 10.46 Contention between TCNT Write and Increment Operations
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.6
Contention between TGR Write and Compare Match
If a compare match occurs in the T2 state of a TGR write cycle, the TGR write takes precedence and the compare match signal is inhibited. A compare match does not occur even if the previous value is written. Figure 10.47 shows the timing in this case.
TGR write cycle T1 T2 Address TGR address
Write signal Compare match signal TCNT N N+1
Disabled
TGR
N TGR write data
M
Figure 10.47 Contention between TGR Write and Compare Match
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.7
Contention between Buffer Register Write and Compare Match
If a compare match occurs in the T2 state of a TGR write cycle, the data that is transferred to TGR by the buffer operation will be that in the buffer prior to the write. Figure 10.48 shows the timing in this case.
TGR write cycle T2 T1 Address Buffer register address
Write signal Compare match signal Buffer register write data Buffer register TGR N M
N
Figure 10.48 Contention between Buffer Register Write and Compare Match
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.8
Contention between TGR Read and Input Capture
If an input capture signal is generated in the T1 state of a TGR read cycle, the data that is read will be that in the buffer after input capture transfer. Figure 10.49 shows the timing in this case.
TGR read cycle T2 T1 Address TGR address
Read signal Input capture signal TGR X M
Internal data bus
M
Figure 10.49 Contention between TGR Read and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.9
Contention between TGR Write and Input Capture
If an input capture signal is generated in the T2 state of a TGR write cycle, the input capture operation takes precedence and the write to TGR is not performed. Figure 10.50 shows the timing in this case.
TGR write cycle T2 T1 Address TGR address
Write signal Input capture signal TCNT M
TGR
M
Figure 10.50 Contention between TGR Write and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.10 Contention between Buffer Register Write and Input Capture If an input capture signal is generated in the T2 state of a buffer register write cycle, the buffer operation takes precedence and the write to the buffer register is not performed. Figure 10.51 shows the timing in this case.
Buffer register write cycle T2 T1 Address Buffer register address
Write signal Input capture signal TCNT N
TGR Buffer register
M
N
M
Figure 10.51 Contention between Buffer Register Write and Input Capture
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.11 Contention between Overflow/Underflow and Counter Clearing If overflow/underflow and counter clearing occur simultaneously, the TCFV/TCFU flag in TSR is not set and TCNT clearing takes precedence. Figure 10.52 shows the operation timing when a TGR compare match is specified as the clearing source, and when H'FFFF is set in TGR.
TCNT input clock TCNT Counter clear signal TGF flag Disabled TCFV flag H'FFFF H'0000
Figure 10.52 Contention between Overflow and Counter Clearing
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9.12 Contention between TCNT Write and Overflow/Underflow If there is an up-count or down-count in the T2 state of a TCNT write cycle, and overflow/underflow occurs, the TCNT write takes precedence and the TCFV/TCFU flag in TSR is not set. Figure 10.53 shows the operation timing when there is contention between TCNT write and overflow.
TNC Write cycle T1 T2
Address
TCNT address
Write signal
TCNT write data H'FFFF M
TCNT
TCFV flag
Disabled
Figure 10.53 Contention between TCNT Write and Overflow 10.9.13 Multiplexing of I/O Pins In this LSI, the TCLKA input pin is multiplexed with the TIOCC0 I/O pin, the TCLKB input pin with the TIOCD0 I/O pin, the TCLKC input pin with the TIOCB1 I/O pin, and the TCLKD input pin with the TIOCB2 I/O pin. When an external clock is input, compare match output should not be performed from a multiplexed pin. 10.9.14 Interrupts in Module Stop Mode If module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source or the DTC activation source. Interrupts should therefore be disabled before entering module stop mode.
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Section 11 8-Bit Timers (TMR)
Section 11 8-Bit Timers (TMR)
This LSI has an on-chip 8-bit timer module with four channels. The 8-bit timer module can be used to count external events and be used as a multifunction timer in a variety of applications, such as generation of counter reset, interrupt requests, and pulse output with an arbitrary duty cycle using a compare-match signal with two registers.
11.1
Features
* Selection of four clock sources Selected from three internal clocks (/8, /64, and /8192) and an external clock * Selection of three ways to clear the counters The counters can be cleared on compare-match A or B, or by an external reset signal * Timer output controlled by two compare-match signals The timer output signal in each channel is controlled by two independent compare-match signals, enabling the timer to be used for various applications, such as the generation of pulse output or PWM output with an arbitrary duty cycle * Cascading of the two channels (Cascading of TMR_0, TMR_1) The module can operate as a 16-bit timer using TMR_0 as the upper half and TMR_1 as the lower half (16-bit count mode) TMR_1 can be used to count TMR_0 compare-match occurrences (compare-match count mode) (Cascading of TMR_2, TMR_3) The module can operate as a 16-bit timer using TMR_2 as the upper half and TMR_3 as the lower half (16-bit count mode) TMR_3 can be used to count TMR_2 compare-match occurrences (compare-match count mode) * Multiple interrupt sources for each channel Two compare-match interrupts and one overflow interrupt can be requested independently * Generation of A/D converter conversion start trigger Channel 0 compare-match signal can be used as the A/D converter conversion start trigger * Module stop mode can be set As the initial setting, the 8-bit timer operation is halted. Register access is enabled by canceling the module stop mode.
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Section 11 8-Bit Timers (TMR)
Figure 11.1 shows a block diagram of the 8-bit timer module (TMR_0 and TMR_1).
External clock TMCI01 TMCI23 Internal clock /8 /64 /8192
Clock 1 Clock 0 Clock select TCORA_0 Compare-match A1 Compare-match A0 Comparator A_0 Overflow 1 Overflow 0 Clear 0 Clear 1 Compare-match B1 Compare-match B0 Comparator B_0 TMO1 TMO2 TMO3 Control logic TCORB_0 TCORB_1 Comparator B_1 TCORA_1
Comparator A_1
TCSR_0 A/D conversion start request signal
TCSR_1
TCR_0 CMIA0 CMIB0 OVI0 CMIA1 CMIB1 OVI1 Interrupt signals
TCR_1
Legend: TCORA_0: TCORB_0: TCNT_0: TCSR_0: TCR_0:
Time constant register A_0 Time constant register B_0 Timer counter_0 Timer control/status register_0 Timer control register_0
TCORA_1: TCORB_1: TCNT_1: TCSR_1: TCR_1:
Time constant register A_1 Time constant register B_1 Timer counter_1 Timer control/status register_1 Timer control register_1
Figure 11.1 Block Diagram of 8-Bit Timer Module
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Internal bus
TMO0 TMRI01 TMRI23
TCNT_0
TCNT_1
Section 11 8-Bit Timers (TMR)
11.2
Input/Output Pins
Table 11.1 summarizes the input and output pins of the 8-bit timer module. Table 11.1 Pin Configuration
Channel 0 1 Common to 0 and 1 2 3 Common to 2 and 3 Name Timer output Timer output Timer clock input Timer reset input Timer output Timer output Timer clock input Timer reset input Symbol TMO0 TMO1 TMCI01 TMRI01 TMO2 TMO3 TMCI23 TMRI23 I/O Output Output Input Input Output Output Input Input Function Output controlled by compare-match Output controlled by compare-match External clock input for the counter External reset input for the counter Output controlled by compare-match Output controlled by compare-match External clock input for the counter External reset input for the counter
11.3
Register Descriptions
The 8-bit timer has the following registers. For details on the module stop register, see section 22.1.2, Module Stop Control Registers A to C (MSTPCRA to MSTPCRC). Channel 0 * Timer counter_0 (TCNT_0) * Time constant register A_0 (TCORA_0) * Time constant register B_0 (TCORB_0) * Timer control register_0 (TCR_0) * Timer control/status register_0 (TCSR_0) Channel 1 * Timer counter_1 (TCNT_1) * Time constant register A_1 (TCORA_1) * Time constant register B_1 (TCORB_1) * Timer control register_1 (TCR_1) * Timer control/status register_1 (TCSR_1)
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Section 11 8-Bit Timers (TMR)
Channel 2 * Timer counter_2 (TCNT_2) * Time constant register A_2 (TCORA_2) * Time constant register B_2 (TCORB_2) * Timer control register_2 (TCR_2) * Timer control/status register_2 (TCSR_2) Channel 3 * Timer counter_3 (TCNT_3) * Time constant register A_3 (TCORA_3) * Time constant register B_3 (TCORB_3) * Timer control register_3 (TCR_3) * Timer control/status register_3 (TCSR_3) 11.3.1 Timer Counter (TCNT)
Each TCNT is an 8-bit up-counter. TCNT_0 and TCNT_1 (or TCNT_2 and TCNT_3) comprise a single 16-bit register, so they can be accessed together by word access. This clock source is selected by the clock select bits, CKS2 to CKS0, in TCR. TCNT can be cleared by an external reset input signal or compare-match signals A and B. The CCLR1 and CCLR0 bits in TCR select the method of TCNT clearing. When TCNT overflows from H'FF to H'00, the overflow flag (OVF) in TCSR is set to 1. The initial value of TCNT is H'00. 11.3.2 Time Constant Register A (TCORA)
TCORA is an 8-bit readable/writable register. TCORA_0 and TCORA_1 (or TCORA_2 and TCORA_3) comprise a single 16-bit register, so they can be accessed together by word access. TCORA is continually compared with the value in TCNT. When a match is detected, the corresponding compare-match flag A (CMFA) in TCSR is set. Note, however, that comparison is disabled during the T2 state of a TCORA write cycle. The timer output from the TMO pin can be freely controlled by the compare-match signal A and the settings of the output select bits, OS1 and OS0, in TCSR. The initial value of TCORA is H'FF.
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Section 11 8-Bit Timers (TMR)
11.3.3
Time Constant Register B (TCORB)
TCORB is an 8-bit readable/writable register. TCORB_0 and TCORB_1 (or TCORB_2 and TCORB_3) comprise a single 16-bit register, so they can be accessed together by word access. TCORB is continually compared with the value in TCNT. When a match is detected, the corresponding compare-match flag B (CMFB) in TCSR is set. Note, however, that comparison is disabled during the T2 state of a TCORB write cycle. The timer output from the TMO pin can be freely controlled by the compare-match signal B and the settings of the output select bits, OS1 and OS0, in TCSR. The initial value of TCORB is H'FF. 11.3.4 Timer Control Register (TCR)
TCR selects the TCNT clock source and the time at which TCNT is cleared, and controls interrupt requests.
Bit 7 Bit Name CMIEB Initial Value 0 R/W R/W Description Compare-Match Interrupt Enable B Selects whether the CMFB interrupt request (CMIB) is enabled or disabled when the CMFB flag in TCSR is set to 1. 0: CMFB interrupt request (CMIB) is disabled 1: CMFB interrupt request (CMIB) is enabled 6 CMIEA 0 R/W Compare-Match Interrupt Enable A Selects whether the CMFA interrupt request (CMIA) is enabled or disabled when the CMFA flag in TCSR is set to 1. 0: CMFA interrupt request (CMIA) is disabled 1: CMFA interrupt request (CMIA) is enabled 5 OVIE 0 R/W Timer Overflow Interrupt Enable Selects whether the OVF interrupt request (OVI) is enabled or disabled when the OVF flag in TCSR is set to 1. 0: OVF interrupt request (OVI) is disabled 1: OVF interrupt request (OVI) is enabled
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Section 11 8-Bit Timers (TMR)
Bit 4 3
Bit Name CCLR1 CCLR0
Initial Value 0 0
R/W R/W R/W
Description Counter Clear 1 and 0 These bits select the method by which TCNT is cleared 00: Clearing is disabled 01: Cleared on compare-match A 10: Cleared on compare-match B 11: Cleared on rising edge of external reset input
2 1 0
CKS2 CKS1 CKS0
0 0 0
R/W R/W R/W
Clock Select 2 to 0 The input clock can be selected from three clocks divided from the system clock (). When use of an external clock is selected, three types of count can be selected: at the rising edge, the falling edge, and both rising and falling edges. 000: Clock input disabled 001: /8 internal clock source, counted on the falling edge 010: /64 internal clock source, counted on the falling edge 011: /8192 internal clock source, counted on the falling edge 100: For channel 0: Counted on TCNT1 overflow signal* For channel 1: Counted on TCNT0 compare-match A signal* For channel 2: Counted on TCNT3 overflow signal* For channel 3: Counted on TCNT2 compare-match A signal* 101: External clock source, counted at rising edge 110: External clock source, counted at falling edge 111: External clock source, counted at both rising and falling edges
Note:
*
If the count input of channel 0 (channel 2) is the TCNT1 (TCNT3) overflow signal and that of channel 1 (channel 3) is the TCNT0 (TCNT2) compare-match signal, no incrementing clock will be generated. Do not use this setting.
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Section 11 8-Bit Timers (TMR)
11.3.5
Timer Control/Status Register (TCSR)
TCSR indicates status flags and controls compare-match output. * TCSR_0
Bit 7 Bit Name CMFB Initial Value 0 R/W Description
R/(W)* Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB. When DTC is activated by CMIB interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
6
CMFA
0
R/(W)* Compare-Match Flag A [Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA. When DTC is activated by CMIA interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
5
OVF
0
R/(W)* Timer Overflow Flag [Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF
4
ADTE
0
R/W
A/D Trigger Enable Enables or disables A/D converter start requests by compare-match A. 0: A/D converter start requests by compare-match A are disabled 1: A/D converter start requests by compare-match A are enabled
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Section 11 8-Bit Timers (TMR)
Bit 3 2
Bit Name OS3 OS2
Initial Value 0 0
R/W R/W R/W
Description Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
1 0
OS1 OS0
0 0
R/W R/W
Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Note:
*
Only 0 can be written to this bit, to clear the flag.
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Section 11 8-Bit Timers (TMR)
* TCSR_1 and TCSR_3
Bit 7 Bit Name CMFB Initial Value 0 R/W Description
R/(W)* Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB. When DTC is activated by CMIB interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
6
CMFA
0
R/(W)* Compare-Match Flag A [Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA. When DTC is activated by CMIA interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
5
OVF
0
R/(W)* Timer Overflow Flag [Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF
4 3 2
OS3 OS2
1 0 0
R/W R/W
Reserved This bit is always read as 1 and cannot be modified. Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
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Section 11 8-Bit Timers (TMR)
Bit 1 0
Bit Name OS1 OS0
Initial Value 0 0
R/W R/W R/W
Description Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Note:
*
Only 0 can be written to this bit, to clear the flag.
* TCSR_2
Bit 7 Bit Name CMFB Initial Value 0 R/W Description
R/(W)* Compare-Match Flag B [Setting condition] When TCNT = TCORB [Clearing conditions] * * Read CMFB when CMFB = 1, then write 0 in CMFB. When DTC is activated by CMIB interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
6
CMFA
0
R/(W)* Compare-Match Flag A [Setting condition] When TCNT = TCORA [Clearing conditions] * * Read CMFA when CMFA = 1, then write 0 in CMFA. When DTC is activated by CMIA interrupt, the DISEL bit in MRB of DTC is 0 with the transfer counter other than 0.
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Section 11 8-Bit Timers (TMR)
Bit 5
Bit Name OVF
Initial Value 0
R/W
Description
R/(W)* Timer Overflow Flag [Setting condition] When TCNT overflows from H'FF to H'00 [Clearing condition] Read OVF when OVF = 1, then write 0 in OVF
4
0
R/W
Reserved This bit is a readable/writable bit, but the write value should always be 0.
3 2
OS3 OS2
0 0
R/W R/W
Output Select 3 and 2 These bits specify how the timer output level is to be changed by a compare-match B of TCORB and TCNT. 00: No change when compare-match B occurs 01: 0 is output when compare-match B occurs 10: 1 is output when compare-match B occurs 11: Output is inverted when compare-match B occurs (toggle output)
1 0
OS1 OS0
0 0
R/W R/W
Output Select 1 and 0 These bits specify how the timer output level is to be changed by a compare-match A of TCORA and TCNT. 00: No change when compare-match A occurs 01: 0 is output when compare-match A occurs 10: 1 is output when compare-match A occurs 11: Output is inverted when compare-match A occurs (toggle output)
Note:
*
Only 0 can be written to this bit, to clear the flag.
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Section 11 8-Bit Timers (TMR)
11.4
11.4.1
Operation
Pulse Output
Figure 11.2 shows an example of arbitrary duty pulse output. 1. Set the CCR1 bit in TCR to 0 and the CCLR0 bit to 1 to clear TCNT by a TCORA comparematch. 2. Set the OS3 to OS0 bits in TCSR to B'0110 to output 1 by a TCORA compare-match and 0 by a TCORB compare-match. By the above settings, waveforms with the cycle of TCORA and the pulse width of TCORB can be output without software intervention.
TCNT H'FF TCORA TCORB H'00 TMO Counter clear
Figure 11.2 Example of Pulse Output
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Section 11 8-Bit Timers (TMR)
11.5
11.5.1
Operation Timing
TCNT Incrementation Timing
Figure 11.3 shows the TCNT count timing with internal clock source. Figure 11.4 shows the TCNT incrementation timing with external clock source. The pulse width of the external clock for incrementation at single edge must be at least 1.5 status, and at least 2.5 states for incrementation at both edges. The counter will not increment correctly if the pulse width is less than these values.
Internal clock
TCNT input clock
TCNT
N-1
N
N+1
Figure 11.3 Count Timing for Internal Clock Input
External clock input pin
TCNT input clock
TCNT
N-1
N
N+1
Figure 11.4 Count Timing for External Clock Input
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Section 11 8-Bit Timers (TMR)
11.5.2
Timing of CMFA and CMFB Setting When a Compare-Match Occurs
The CMFA and CMFB flags in TCSR are set to 1 by a compare-match signal generated when the TCOR and TCNT values match. The compare-match signal is generated at the last state in which the match is true, just before the timer counter is updated. Therefore, when TCOR and TCNT match, the compare-match signal is not generated until the next incrementation clock input. Figure 11.5 shows the timing of CMF flag setting.
TCNT
N
N+1
TCOR Compare-match signal
N
CMF
Figure 11.5 Timing of CMF Flag Setting 11.5.3 Timing of Timer Output When a Compare-Match Occurs
When a compare-match occurs, the timer output changes as specified by the output select bits, OS3 to OS0, in TCSR. Figure 11.6 shows the timing when the output is set to toggle at comparematch A.
Compare-match A signal
Timer output pin
Figure 11.6 Timing of Timer Output
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Section 11 8-Bit Timers (TMR)
11.5.4
Timing of Compare-Match Clear When a Compare-Match Occurs
TCNT is cleared when compare-match A or B occurs, depending on the setting of the CCLR1 and CCLR0 bits in TCR. Figure 11.7 shows the timing of this operation.
Compare-match signal
TCNT
N
H'00
Figure 11.7 Timing of Compare-Match Clear 11.5.5 TCNT External Reset Timing
TCNT is cleared at the rising edge of an external reset input, depending on the settings of the CCLR1 and CCLR0 bits in TCR. The width of the clearing pulse must be at least 1.5 states. Figure 11.8 shows the timing of this operation.
External reset input pin
Clear signal
TCNT
N-1
N
H'00
Figure 11.8 Timing of Clearing by External Reset Input
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Section 11 8-Bit Timers (TMR)
11.5.6
Timing of Overflow Flag (OVF) Setting
OVF in TCSR is set to 1 when the timer count overflows (changes from H'FF to H'00). Figure 11.9 shows the timing of this operation.
TCNT
H'FF
H'00
Overflow signal
OVF
Figure 11.9 Timing of OVF Setting
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Section 11 8-Bit Timers (TMR)
11.6
Operation with Cascaded Connection
If the CKS2 to CKS0 bits in one of TCR_0 and TCR_1 (or TCR_2 and TCR_3) are set to B'100, the 8-bit timers (TMR) of the two channels are cascaded. With this configuration, a single 16-bit timer can be used (16-bit timer mode) or compare-matches of 8-bit channel 0 (channel 2) can be counted by the timer of channel 1 (channel 3) (compare-match count mode). In the case that channel 0 is connected to channel 1 in cascade, the timer operates as described below. 11.6.1 16-Bit Count Mode
When the CKS2 to CKS0 bits in TCR_0 are set to B'100, the timer functions as a single 16-bit timer with channel 0 occupying the upper 8 bits and channel 1 occupying the lower 8 bits. * Setting of compare-match flags The CMF flag in TCSR_0 is set to 1 when a 16-bit compare-match occurs. The CMF flag in TCSR_1 is set to 1 when a lower 8-bit compare-match occurs. * Counter clear specification If the CCLR1 and CCLR0 bits in TCR_0 have been set for counter clear at compare-match, the 16-bit counter (TCNT_0 and TCNT_1 together) is cleared when a 16-bit comparematch occurs. The 16-bit counter (TCNT_0 and TCNT_1 together) is cleared even if counter clear by the TMRI01 pin has also been set. The settings of the CCLR1 and CCLR0 bits in TCR_1 are ignored. The lower 8 bits cannot be cleared independently. * Pin output Control of output from the TMO0 pin by the OS3 to OS0 bits in TCSR_0 is in accordance with the 16-bit compare-match conditions. Control of output from the TMO1 pin by the OS3 to OS0 bits in TCSR_1 is in accordance with the lower 8-bit compare-match conditions.
11.6.2
Compare-Match Count Mode
When the CKS2 to CKS0 bits in TCR_1 are B'100, TCNT_1 counts compare-match A for channel 0. Channels 0 and 1 are controlled independently. Conditions such as setting of the CMF flag, generation of interrupts, output from the TMO pin, and counter clearing are in accordance with the settings for each channel.
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Section 11 8-Bit Timers (TMR)
11.7
11.7.1
Interrupt Sources
Interrupt Sources and DTC Activation
The 8-bit timer can generate three types of interrupt: CMIA, CMIB, and OVI. Table 11.2 shows the interrupt sources and priority. Each interrupt source can be enabled or disabled independently by the interrupt enable bits in TCR. Independent signals are sent to the interrupt controller for each interrupt. It is also possible to activate the DTC by means of CMIA or CMIB interrupt. Table 11.2 8-Bit Timer Interrupt Sources
Interrupt source CMIA0 CMIB0 OVI0 CMIA1 CMIB1 OVI1 CMIA2 CMIB2 OVI2 CMIA3 CMIB3 OVI3 Description TCORA_0 compare-match TCORB_0 compare-match TCNT_0 overflow TCORA_1 compare-match TCORB_1 compare-match TCNT_1 overflow TCORA_2 compare-match TCORB_2 compare-match TCNT_2 overflow TCORA_3 compare-match TCORB_3 compare-match TCNT_3 overflow Flag CMFA CMFB OVF CMFA CMFB OVF CMFA CMFB OVF CMFA CMFB OVF DTC Activation* Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Low Interrupt Priority High
Note: This list shows the initial state directly after the reset. Relative channel priorities can be changed by the interrupt controller.
11.7.2
A/D Converter Activation
The A/D converter can be activated only by channel 0 compare match A. If the ADTE bit in TCSR0 is set to 1 when the CMFA flag is set to 1 by the occurrence of channel 0 compare match A, a request to start A/D conversion is sent to the A/D converter. If the 8-bit timer conversion start trigger has been selected on the A/D converter side at this time, A/D conversion is started.
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Section 11 8-Bit Timers (TMR)
11.8
11.8.1
Usage Notes
Setting Module Stop Mode
The TMR is enabled or disabled by setting the module stop control register. In the initial state, the TMR is disabled. After the module stop mode is canceled, registers can be accessed. For details, see section 22, Power-Down Modes. 11.8.2 Contention between TCNT Write and Clear
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the clear takes priority, so that the counter is cleared and the write is not performed. Figure 11.10 shows this operation.
TCNT write cycle by CPU T1
T2
Address
TCNT address
Internal write signal
Counter clear signal
TCNT
N
H'00
Figure 11.10 Contention between TCNT Write and Clear
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Section 11 8-Bit Timers (TMR)
11.8.3
Contention between TCNT Write and Increment
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write takes priority and the counter is not incremented. Figure 11.11 shows this operation.
TCNT write cycle by CPU T1 T2
Address
TCNT address
Internal write signal
TCNT input clock
TCNT
N
M Counter write data
Figure 11.11 Contention between TCNT Write and Increment
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Section 11 8-Bit Timers (TMR)
11.8.4
Contention between TCOR Write and Compare-Match
During the T2 state of a TCOR write cycle, the TCOR write has priority even if a compare-match occurs and the compare-match signal is disabled. Figure 11.12 shows this operation.
TCOR write cycle by CPU T1 T2
Address
TCOR address
Internal write signal
TCNT
N
N+1
TCOR
N
M TCOR write data
Compare-match signal Disabled
Figure 11.12 Contention between TCOR Write and Compare-Match 11.8.5 Contention between Compare-Matches A and B
If compare-matches A and B occur at the same time, the 8-bit timer operates in accordance with the priorities for the output states set for compare-match A and compare-match B, as shown in table 11.3. Table 11.3 Timer Output Priorities
Output Setting Toggle output 1 output 0 output No change Low Priority High
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Section 11 8-Bit Timers (TMR)
11.8.6
Switching of Internal Clocks and TCNT Operation
TCNT may increment erroneously when the internal clock is switched over. Table 11.4 shows the relationship between the timing at which the internal clock is switched (by writing to the CKS1 and CKS0 bits) and the TCNT operation. When the TCNT clock is generated from an internal clock, the falling edge of the internal clock pulse is detected. If clock switching causes a change from high to low level, as shown in no. 3 in table 11.4, a TCNT clock pulse is generated on the assumption that the switchover is a falling edge. This increments TCNT. Erroneous incrementation can also happen when switching between internal and external clocks. Table 11.4 Switching of Internal Clock and TCNT Operation
Timing of Switchover by Means of CKS1 and CKS0 Bits TCNT Clock Operation Switching from low to 1 low*
Clock before switchover Clock after switchover TCNT clock
No. 1
TCNT
N CKS bit rewrite
N+1
2
Switching from low to high*2
Clock before switchover Clock after switchover TCNT clock
TCNT
N
N+1
N+2
CKS bit rewrite
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Section 11 8-Bit Timers (TMR)
No. 3
Timing of Switchover by Means of CKS1 and CKS0 Bits TCNT Clock Operation Switching from high to 3 low*
Clock before switchover Clock after switchover TCNT clock
*4
TCNT
N
N+1 CKS bit rewrite
N+2
4
Switching from high to high
Clock before switchover Clock after switchover TCNT clock
TCNT
N
N+1
N+2 CKS bit rewrite
Notes: 1. 2. 3. 4.
Includes switching from low to stop, and from stop to low. Includes switching from stop to high. Includes switching from high to stop. Generated on the assumption that the switchover is a falling edge; TCNT is incremented.
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Section 11 8-Bit Timers (TMR)
11.8.7
Contention between Interrupts and Module Stop Mode
If module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source or the DTC activation source. Interrupts should therefore be disabled before entering module stop mode. 11.8.8 Mode Setting in Cascading
When 16-bit counter mode and compare much counter mode are set simultaneously, input clock of TCNT_0 and TCNT_1 (or TCNT_2 and TCNT_3) are not generated, causing the counter to stop operating. This mode should not be set.
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Section 12 Watchdog Timer (WDT)
Section 12 Watchdog Timer (WDT)
The watchdog timer (WDT) is an 8-bit timer in two channels that can reset this LSI internally or generate the internal NMI interrupt, if a system crash prevents the CPU from writing to the timer. When this watchdog function is not needed, the WDT can be used as an interval timer. In interval timer operation, an interval timer interrupt is generated each time the counter overflows. The block diagram of the WDT is shown in figure 12.1.
12.1
Features
* Selectable from eight counter input clocks for WDT_0 Selectable from 16 counter input clocks for WDT_1 * Switchable between watchdog timer mode and interval timer mode Watchdog timer mode * If the counter in WDT_0 overflows, it is possible to select whether this LSI is internally reset or not * Power-on reset and manual reset are selectable for internal reset * If the counter in WDT_1 overflows, it is possible to select whether this LSI is internally reset at a power-on timing or the internal NMI interrupt is generated Interval timer mode * If the counter overflows, the WDT generates an interval timer interrupt (WOVI) * Selected clock can be output from BUZZ output pin (WDT_1)
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Section 12 Watchdog Timer (WDT)
Overflow WOVI0 (interrupt request signal) Interrupt control Clock Clock select
Internal reset signal*
Reset control
/2 /64 /128 /512 /2048 /8192 /32768 /131072 Internal clock
RSTCSR
TCNT_0
TCSR_0 Bus interface
Module bus WDT Legend: TCSR_0: Timer control/status register 0 TCNT_0: Timer counter 0 RSTCSR: Reset control/status register Note: * The internal reset signal is generated by the register setting. Power-on reset and manual reset are selectable for internal reset.
Figure 12.1 Block Diagram of WDT_0 (1)
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Internal bus
Section 12 Watchdog Timer (WDT)
WOVI1 (interrupt request signal) Internal NMI (interrupt request signal) Internal reset signal*
Interrupt control Reset control
Overflow
Clock
Clock select
/2 /64 /128 /512 /2048 /8192 /32768 /131072 Internal clock
SUB/2 SUB/4 SUB/8 SUB/16 SUB/32 SUB/64 SUB/128 SUB/256
TCNT_1
TCSR_1 Bus interface
Module bus WDT Legend: TCSR_1: TCNT_1: Timer control/status register 1 Timer counter 1
Note: * The internal reset signal is generated by the register setting. Power-on reset is set for internal reset.
Figure 12.1 Block Diagram of WDT_1 (2)
12.2
Input/Output Pin
Table 12.1 shows the WDT pin. Table 12.1 Pin Configuration
Name Buzz output Symbol BUZZ Input/Output Output Function Clock output selected at WDT_1
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Internal bus
BUZZ
Section 12 Watchdog Timer (WDT)
12.3
Register Descriptions
The WDT has the following three registers. To prevent accidental overwriting, TCSR and TCNT have to be written to by a different method from normal registers. For details, see section 12.6.1, Notes on Register Access. For detailed description on the system control register, see section 3.2.2, System Control Register (SYSCR). For details on the pin function control register, see section 7.3.6, Pin Function Control Register (PFCR). * Timer counter (TCNT) * Timer control/status register (TCSR) * Reset control/status register (RSTCSR) 12.3.1 Timer Counter (TCNT)
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 when the TME bit in TCSR is cleared to 0. To initialize TCNT to H'00 during timer operation, write a value of H'00 directly to TCNT. For details, see 12.6.7, Initialization of TCNT by the TME Bit. 12.3.2 Timer Control/Status Register
TCSR functions include selecting the clock source to be input to TCNT and the timer mode. * TCSR_0
Bit 7 Bit Name OVF Initial Value 0 R/W
1
Description
R/(W)* Overflow Flag Indicates that TCNT has overflowed. Only a 0 can be written to this bit, to clear the flag. [Setting condition] When TCNT overflows (changes from H'FF to H'00). However, when internal reset request generation is selected in watchdog timer mode, OVF is cleared automatically by the internal reset. [Clearing condition]
2 Cleared by reading TCSR* when OVF = 1, then writing 0 to OVF
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Section 12 Watchdog Timer (WDT)
Bit 6
Bit Name WT/IT
Initial Value 0
R/W R/W
Description Timer Mode Select Selects whether the WDT is used as a watchdog timer or interval timer. 0: Interval timer mode (the interval timer interrupt (WOVI) request to the CPU) 1: Watchdog timer mode (internal reset selectable)
5
TME
0
R/W
Timer Enable When this bit is set to 1, TCNT starts counting. When this bit is cleared, TCNT stops counting and is initialized to H'00.
4, 3 2 1 0
CKS2 CKS1 CKS0
All 1 0 0 0
R/W R/W R/W
Reserved These bits are always read as 1 and cannot be modified. Clock Select 0 to 2 These bits select the clock source to be input to TCNT. 3 The overflow frequency* for = 20 MHz is enclosed in parentheses. 000: Clock /2 (frequency: 25.6 s) 001: Clock /64 (frequency: 819.2 s) 010: Clock /128 (frequency: 1.6 ms) 011: Clock /512 (frequency: 6.6 ms) 100: Clock /2048 (frequency: 26.2 ms) 101: Clock /8192 (frequency: 104.9 ms) 110: Clock /32768 (frequency: 419.4 ms) 111: Clock /131072 (frequency: 1.68 s)
Notes: 1. Only 0 can be written for flag clearing. 2. When the OVF flag is polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice. 3. The overflow period is the time from when TCNT starts counting up from H00 until an overflow occurs.
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Section 12 Watchdog Timer (WDT)
* TCSR_1
Bit 7 Bit Name OVF Initial Value 0 R/W
1
Description
R/(W)* Overflow Flag Indicates that TCNT has overflowed. Only a 0 can be written to this bit, to clear the flag. [Setting condition] When TCNT overflows (changes from H'FF to H'00). However, when internal reset request generation is selected in watchdog timer mode, OVF is cleared automatically by the internal reset. [Clearing condition]
2 Cleared by reading TCSR* when OVF = 1, then writing 0 to OVF
6
WT/IT
0
R/W
Timer Mode Select Selects whether the WDT is used as a watchdog timer or interval timer. 0: Interval timer mode (the interval timer interrupt (WOVI) request to the CPU) 1: Watchdog timer mode (a power-on reset or the NMI interrupt request to the CPU)
5
TME
0
R/W
Timer Enable When this bit is set to 1, TCNT starts counting. When this bit is cleared, TCNT stops counting and is initialized to H'00.
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Section 12 Watchdog Timer (WDT)
Bit 4
Bit Name PSS
Initial Value 0
R/W R/W
Description Prescaler Select Selects the clock source input to TCNT of WDT_1. Controls the operation in power-down mode transition. 0: TCNT counts divided clock of -base prescaler (PSM). When SLEEP instruction is executed in high-speed mode or medium-speed mode, transition to sleep mode or software standby mode is made. 1: TCNT counts divided clock of SUB -base prescaler (PSS). When SLEEP instruction is executed in high-speed mode or medium-speed mode, transition to sleep mode, software standby mode, or watch mode* is made. Note: * When transition is made to watch mode, make sure that high-speed mode is set.
3
RST/NMI
0
R/W
Reset or NMI (REST/NMI) Selects either a power-on reset or the NMI interrupt request when TCNT overflows in watchdog timer mode. 0: NMI interrupt is requested. 1: Power-on reset is requested.
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Section 12 Watchdog Timer (WDT)
Bit 2 1 0
Bit Name CKS2 CKS1 CKS0
Initial Value 0 0 0
R/W R/W R/W R/W
Description Clock Select 2 to 0 These bits select the clock source to be input to TCNT. 3 The overflow frequency* for = 20 MHz and SUB = 32.768 MHz is enclosed in parentheses. When PSS = 0: 000: Clock /2 (frequency: 25.6 s) 001: Clock /64 (frequency: 819.2 s) 010: Clock /128 (frequency: 1.6 ms) 011: Clock /512 (frequency: 6.6 ms) 100: Clock /2048 (frequency: 26.2 ms) 101: Clock /8192 (frequency: 104.9 ms) 110: Clock /32768 (frequency: 419.4 ms) 111: Clock /131072 (frequency: 1.68 s) When PSS = 1: 000: Clock SUB/2 (frequency: 15.6 ms) 001: Clock SUB/4 (frequency: 31.3 ms) 010: Clock SUB/8 (frequency: 62.5 ms) 011: Clock SUB/16 (frequency: 125 ms) 100: Clock SUB/32 (frequency: 250 ms) 101: Clock SUB/64 (frequency: 500 ms) 110: Clock SUB/128 (frequency: 1 s) 111: Clock SUB/256 (frequency: 2 s)
Notes: 1. Only 0 can be written, for flag clearing. 2. When the OVF flag is polled with the interval timer interrupt disabled, read the OVF bit while it is 1 at least twice. 3. The overflow period is the time from when TCNT starts counting up from H'00 until overflow occurs.
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Section 12 Watchdog Timer (WDT)
12.3.3
Reset Control/Status Register (RSTCSR) (WDT_0 only)
RSTCSR controls to generate the internal reset signal when TCNT overflows, and selects the type of internal reset signal. RSTCSR is initialized by a reset signal from the RES pin, and not by the WDT internal reset signal caused by overflows.
Bit 7 Bit Name WOVF Initial Value 0 R/W Description
R/(W)* Watchdog Overflow Flag This bit is set when TCNT overflows in watchdog timer mode. This bit cannot be set in interval timer mode, and only 0 can be written, to clear the flag. [Setting condition] Set when TCNT overflows (changed from H'FF to H'00) in watchdog timer mode [Clearing condition] Cleared by reading RSTCSR when WOVF = 1, and then writing 0 to WOVF
6
RSTE
0
R/W
Reset Enable Specifies whether or not a reset signal is generated in the chip if TCNT overflows during watchdog timer operation. 0: Reset signal is not generated even if TCNT overflows. (Though this LSI is not reset, TCNT and TCSR in WDT are reset.) 1: Reset signal is generated if TCNT overflows.
5
RSTS
0
R/W
Reset Select Selects the type of internal reset, which is generated if TCNT overflows during watchdog timer operation. 0: Power-on reset 1: Manual reset
4 to 0
All 1
Reserved These bits are always read as 1 and cannot be modified.
Note:
*
Only 0 can be written, to clear the flag.
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Section 12 Watchdog Timer (WDT)
12.4
12.4.1
Operation
Watchdog Timer Mode
To use the WDT as a watchdog timer, set the WT/IT bit in TCSR and the TME bit to 1. Software must prevent TCNT overflows by rewriting the TCNT value (normally be writing H'00) before overflows occurs. Thus, TCNT does not overflow while the system is operating normally. When the WDT is used as a watchdog timer and the RSTE bit in RSTCSR of WDT_0 is set to 1, and if TCNT overflows without being rewritten because of a system malfunction or other error, an internal reset signal for this LSI is output for 518 system clocks. When the RST/NMI bit in TCSR of WDT_1 is set to 1, and if TCNT overflows, the internal reset signal is output for 516 system clocks. When the RST/ NMI bit is cleared to 0, if TCNT overflows, an NMI interrupt request is generated (for 515 or 516 system clocks when the clock source is set to SUB (PSS = 1)). An internal reset request from the watchdog timer and a reset input from the RES pin are both treated as having the same vector. If a WDT internal reset request and the RES pin reset occur at the same time, the RES pin reset has priority and the WOVF bit in RSTCSR is cleared to 0. An NMI interrupt request from the watchdog timer and an interrupt request from the NMI pin are both treated as having the same vector. So, avoid handling an NMI interrupt request from the watchdog timer and an interrupt request from the NMI pin at the same time.
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Section 12 Watchdog Timer (WDT)
TCNT value Overflow H'FF
H'00 WT/IT = 1 TME = 1 Write H'00' to TCNT WOVF = 1 WT/IT = 1 Write H'00' TME = 1 to TCNT
Time
Internal reset signal* 518 system clocks (WDT0) 515/516 system clocks (WDT1)
Legend: WT/IT: Timer mode select bit Timer enable bit TME: WOVF: Overflow flag
Note: * In the case of WDT_0, the internal reset signal is generated only when the RSTE bit is set to 1. In the case of WDT_1, either the internal reset or the NMI interrupt is generated.
Figure 12.2 Watchdog Timer Mode Operation 12.4.2 Interval Timer Mode
To use the WDT as an internal timer, set the WT/IT bit in TCSR to 0 and the TME bit to 1. When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each time the TCNT overflows. (The NMI interrupt request is not generated.) Therefore, an interrupt can be generated at specified times.
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Section 12 Watchdog Timer (WDT)
TCNT value H'FF Overflow Overflow Overflow Overflow
H'00 WT/IT = 0 TME = 1 WOVI WOVI WOVI WOVI
Time
Legend: WOVI: Interval timer interrupt request generation
Figure 12.3 Interval Timer Mode Operation 12.4.3 Timing of Setting Overflow Flag (OVF)
The OVF bit in TCSR is set to 1 if TCNT overflows during interval timer operation. At the same time, an interval timer interrupt (WOVI) is requested. This timing is shown in figure 12.4. In the case of WDT_1, when an NMI request is selected in watchdog timer mode, if TCNT overflows, the OVF bit in TCSR is set to 1 and an NMI interrupt is requested simultaneously.
TCNT
H'FF
H'00
Overflow signal (internal signal)
OVF
Figure 12.4 Timing of OVF Setting
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Section 12 Watchdog Timer (WDT)
12.4.4
Timing of Setting Watchdog Timer Overflow Flag (WOVF)
In the case of WDT_0, if TCNT overflows in watchdog timer mode, the WOVF bit in RSTCSR is set to 1. If TCNT overflows while the RSTE bit in RSTCSR is set to 1, an internal reset signal is generated for the entire chip. (The WOVI interrupt is not generated.) This timing is shown in figure 12.5.
TCNT
H'FF
H'00
Overflow signal (internal signal)
WOVF
Internal reset signal
518 states (WDT_0) 515/516 states (WDT_1)
Figure 12.5 Timing of WOVF Setting
12.5
Interrupt Sources
During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI). The interval timer interrupt is requested whenever the OVF flag in TCSR is set to 1. OVF must be cleared to 0 in the interrupt handling routine. If an NMI request has been chosen in watchdog timer mode, an NMI request is generated when a TCNT overflow occurs. Table 12.2 WDT Interrupt Source
Name WOVI NMI Interrupt Source TCNT overflow (interval timer mode) TCNT overflow (watchdog timer mode) Interrupt Flag OVF OVF
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Section 12 Watchdog Timer (WDT)
12.6
12.6.1
Usage Notes
Notes on Register Access
The watchdog timer's TCNT and TCSR registers differ from other registers in being more difficult to write to. The procedures for writing to and reading these registers are given below. Writing to TCNT and TCSR: These registers must be written to by a word transfer instruction. They cannot be written to by a byte transfer instruction. Refer to figure 12.6. Both TCNT and TCSR are allocated to the same address when they are written to. When writing to TCNT, the upper byte must be H'5A and the lower byte must be data to be written to. When writing to TCSR, the upper byte must be H'A5 and the lower byte must be data to be written to. Accordingly, the lower byte data is written to TCNT or TCSR.
Writing to TCNT 15 Address: H'FF74 H'5A 8 7 Write data 0
Writing to TCSR 15 Address: H'FF74 H'A5 8 7 Write data 0
Figure 12.6 Writing to TCNT and TCSR (WDT_0)
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Section 12 Watchdog Timer (WDT)
Writing to RSTCSR: This register must be written to by a word transfer instruction. It cannot be written to by a byte transfer instruction. Refer to figure 12.7. The method of writing 0 to the WOVF bit differs from that of writing to the RSTE and RSTS bits. To write 0 to the WOVF bit, the upper byte must be H'A5 and the lower byte must be H'00. This clears the WOVF bit to 0 and does not affect the RSTE and RSTS bits. To write to the RSTE and RSTS bits, the upper byte must be H'5A and the lower byte must be data to be written to. Bits 6 and 5 in the lower byte are written to the RSTE and RSTS bits, respectively. This does not affect the WOVF bit.
Writing 0 to WOVF bit 15 Address: H'FF76 H'A5 8 7 H'00 0
Writing to RSTE or RSTS bit 15 Address: H'FF76 H'5A 8 7 Write data 0
Figure 12.7 Writing to RSTCSR Reading from TCNT, TCSR and RSTCSR (in the case of WDT_0): These registers are read in the same way as other registers. The read addresses are allocated in H'FF74 for TCSR, H'FF75 for TCNT, and H'FF77 for RSTCSR.
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Section 12 Watchdog Timer (WDT)
12.6.2
Contention between Timer Counter (TCNT) Write and Increment
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write takes priority and the timer counter is not incremented. Figure 12.8 shows this operation.
TCNT write cycle T1 T2
Address
Internal write signal
TCNT input clock
TCNT
N
M
Counter write data
Figure 12.8 Contention between TCNT Write and Increment 12.6.3 Changing Value of PSS or CKS2 to CKS0
If the PSS or CKS0 to CKS2 bits in TCSR are modified while the WDT is operating, errors could occur in the incrementation. Software must be used to stop the watchdog timer (by clearing the TME bit to 0) before changing the value of the PSS or CKS0 to CKS2 bits. 12.6.4 Switching between Watchdog Timer Mode and Interval Timer Mode
If the mode is switched between watchdog timer mode and interval timer mode while the WDT is operating, errors could occur. Software must be used to stop the watchdog timer (by clearing the TME bit to 0) before switching the timer mode.
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Section 12 Watchdog Timer (WDT)
12.6.5
Internal Reset in Watchdog Timer Mode
This LSI is not reset internally when TCNT overflows, if the RSTE bit is cleared to 0 in watchdog timer mode, however TCNT_0 and TCSR_0 of the WDT_0 are reset. TCNT, TCSR, or RSTCR cannot be written to for 132 states following an overflow. During this period, any attempt to read the WOVF flag is not acknowledged. Accordingly, wait 132 states after an overflow to write 0 to the WOVF flag. 12.6.6 OVF Flag Clearing in Interval Timer Mode
When the OVF flag setting conflicts with the OVF flag reading in interval timer mode, writing 0 to the OVF flag may not clear the flag even though the OVF flag has been read while it is 1. If there is a possibility that the OVF flag setting and reading will conflict, such as when the OVF flag is polled with the interval timer interrupt disabled, read the OVF flag while it is 1 at least twice before writing 0 to the OVF flag to clear the flag. 12.6.7 Initialization of TCNT by the TME Bit
In high-speed or medium-speed mode, after the counter (TCNT) is initialized by clearing TME in TCSR to 0 while operation is in progress with SUB (subclock) selected as the dividing clock (PSS in TCSR set to 1) for the TCNT input clock, TCNT may not initialize properly when TME is once again set to 1 to activate TCNT operation. To avoid this problem, TCNT by writing a value of H'00 to it directly.
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Section 12 Watchdog Timer (WDT)
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Section 13 Serial Communication Interface (SCI)
Section 13 Serial Communication Interface (SCI)
This LSI has five independent serial communication interface (SCI) channels. The SCI can handle both asynchronous and clocked synchronous serial communication. In asynchronous mode, serial data communication can be carried out using standard asynchronous communication chips such as a Universal Asynchronous Receiver/Transmitter (UART) or an Asynchronous Communication Interface Adapter (ACIA). In asynchronous mode, a function is also provided for serial communication between multiple processors (multiprocessor communication function). The SCI also supports an IC card (Smart Card) interface conforming to ISO/IEC 7816-3 (Identification Card) as an extension function in clocked synchronous serial communication mode.
13.1
Features
* Choice of asynchronous or clocked synchronous serial communication mode (Because the same pin is used as the clock input/output pin for channel 1 and channel 4, these clocks cannot be output at the same time.) * Full-duplex communication capability The transmitter and receiver are mutually independent, enabling transmission and reception to be executed simultaneously. The double-buffering configuration is adopted in both the transmitter and the receiver, enabling continuous transmission and continuous reception of serial data. * On-chip baud rate generator allows any bit rate to be selected External clock can be selected as a transfer clock source (except in Smart Card interface mode) * Choice of LSB-first or MSB-first transfer (except in the case of asynchronous mode 7-bit data) * Four interrupt sources Transmit-end, transmit-data-empty, receive-data-full, and receive error -- that can issue requests. The transmit-data-empty and receive-data-full interrupts can be used to activate the data transfer controller (DTC). * Module stop mode can be set Asynchronous mode * Data length: 7 or 8 bits * Stop bit length: 1 or 2 bits * Parity: Even, odd, or none * Receive error detection: Parity, overrun, and framing errors
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Section 13 Serial Communication Interface (SCI)
* Break detection: Break can be detected by reading the RxD pin level directly in the case of a framing error * Communications between multiple processors are possible. Clocked synchronous mode * Data length: 8 bits * Receive error detection: Overrun errors detected Smart Card interface * Automatic transmission of an error signal when a parity error is detected in receive mode * Automatic data retransmission when an error signal is received in transmit mode * Direct convention and inverse convention both supported Figure 13.1 shows a block diagram of the SCI.
Bus interface
Module data bus
Internal data bus
RDR
TDR
SCMR SSR SCR
BRR Baud rate generator /4 /16 /64 Clock
RxD
RSR
TSR
SMR
Transmission/ reception control
TxD
Parity generation Parity check
SCK
External clock TEI TXI RXI ERI
Legend: RSR: RDR: TSR: TDR: SMR: SCR: SSR: SCMR:
Receive shift register Receive data register Transmit shift register Transmit data register Serial mode register Serial control register Serial status register Smart Card mode register
Figure 13.1 Block Diagram of SCI
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Section 13 Serial Communication Interface (SCI)
13.2
Input/Output Pins
Table 13.1 shows the pin configuration for each SCI channel. Table 13.1 Pin Configuration
Channel 0 Pin Name*1 SCK0 RxD0 TxD0 1 SCK1* RxD1 TxD1 2 SCK2 RxD2 TxD2 3 SCK3 RxD3 TxD3 4 SCK4*2 RxD4 TxD4
2
I/O I/O Input Output I/O Input Output I/O Input Output I/O Input Output I/O Input Output
Function Clock input/output in channel 0 Receive data input in channel 0 Transmit data output in channel 0 Clock input/output in channel 1 Receive data input in channel 1 Transmit data output in channel 1 Clock input/output in channel 2 Receive data input in channel 2 Transmit data output in channel 2 Clock input/output in channel 3 Receive data input in channel 3 Transmit data output in channel 3 Clock input/output in channel 4 Receive data input in channel 4 Transmit data output in channel 4
Notes: 1. Pin names SCK, RxD, and TxD are used in this manual for all channels, omitting the channel designation. 2. Because SCK1 and SCK4 are allocated to the same pin, these clocks cannot be output at the same time.
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Section 13 Serial Communication Interface (SCI)
13.3
Register Descriptions
The SCI has the following registers for each channel. The serial mode register (SMR), serial status register (SSR), and serial control register (SCR) are described separately for normal serial communication interface mode and Smart Card interface mode, because some of their bit functions differ depending on the mode. Channel 0 * Receive shift register_0 (RSR_0) * Receive data register_0 (RDR_0) * Transmit data register_0 (TDR_0) * Transmit shift register_0 (TSR_0) * Serial mode register_0 (SMR_0) * Serial control register_0 (SCR_0) * Serial status register_0 (SSR_0) * Smart Card mode register_0 (SCMR_0) * Bit rate register_0 (BRR_0) Channel 1 * Receive shift register_1 (RSR_1) * Receive data register_1 (RDR_1) * Transmit data register_1 (TDR_1) * Transmit shift register_1 (TSR_1) * Serial mode register_1 (SMR_1) * Serial control register_1 (SCR_1) * Serial status register_1 (SSR_1) * Smart Card mode register_1 (SCMR_1) * Bit rate register_1 (BRR_1) Channel 2 * Receive shift register_2 (RSR_2) * Receive data register_2 (RDR_2) * Transmit data register_2 (TDR_2) * Transmit shift register_2 (TSR_2) * Serial mode register_2 (SMR_2) * Serial control register_2 (SCR_2)
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Section 13 Serial Communication Interface (SCI)
* Serial status register_2 (SSR_2) * Smart Card mode register_2 (SCMR_2) * Bit rate register_2 (BRR_2) Channel 3 * Receive shift register_3 (RSR_3) * Receive data register_3 (RDR_3) * Transmit data register_3 (TDR_3) * Transmit shift register_3 (TSR_3) * Serial mode register_3 (SMR_3) * Serial control register_3 (SCR_3) * Serial status register_3 (SSR_3) * Smart Card mode register_3 (SCMR_3) * Bit rate register_3 (BRR_3) Channel 4 * Receive shift register_4 (RSR_4) * Receive data register_4 (RDR_4) * Transmit data register_4 (TDR_4) * Transmit shift register_4 (TSR_4) * Serial mode register_4 (SMR_4) * Serial control register_4 (SCR_4) * Serial status register_4 (SSR_4) * Smart Card mode register_4 (SCMR_4) * Bit rate register_4 (BRR_4) 13.3.1 Receive Shift Register (RSR)
RSR is a shift register that is used to receive serial data input to the RxD pin and convert it into parallel data. When one byte of data has been received, it is transferred to RDR automatically. RSR cannot be directly accessed by the CPU. 13.3.2 Receive Data Register (RDR)
RDR is an 8-bit register that stores receive data. When the SCI has received one byte of serial data, it transfers the received serial data from RSR to RDR, where it is stored. After this, RSR is
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Section 13 Serial Communication Interface (SCI)
receive-enabled. As RSR and RDR function as a double buffer in this way, continuous receive operations are possible. After confirming that the RDRF bit in SSR is set to 1, read RDR only once. RDR cannot be written to by the CPU. RDR is initialized to H'00 by a reset, or in standby mode, watch mode, or module stop mode. 13.3.3 Transmit Data Register (TDR)
TDR is an 8-bit register that stores data for transmission. When the SCI detects that TSR is empty, it transfers the transmit data written in TDR to TSR and starts transmission. As TDR and TSR function as a double buffer in this way, continuous transmit operations are possible. When the SCI transmits one byte of serial data, if the next transmit data has already been written to TDR, the SCI transfers the written data to TSR to continue transmission. Although TDR can be read or written to by the CPU at all times, to achieve reliable serial transmission, write transmit data to TDR only once after confirming that the TDRE bit in SSR is set to 1. TDR is initialized to H'FF by a reset, or in standby mode, watch mode, or module stop mode. 13.3.4 Transmit Shift Register (TSR)
TSR is a shift register that transmits serial data. To perform serial data transmission, the SCI first transfers transmit data from TDR to TSR, and then sends the data to the TxD pin. TSR cannot be directly accessed by the CPU. 13.3.5 Serial Mode Register (SMR)
SMR is used to set the SCI's serial transfer format and select the baud rate generator clock source. Some bit functions of SMR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Bit 7 Bit Name C/A Initial Value 0 R/W R/W Description Communication Mode 0: Asynchronous mode 1: Clocked synchronous mode
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Section 13 Serial Communication Interface (SCI)
Bit 6
Bit Name CHR
Initial Value 0
R/W R/W
Description Character Length (enabled only in asynchronous mode) 0: Selects 8 bits as the data length. 1: Selects 7 bits as the data length. LSB-first is fixed and the MSB (bit 7) of TDR is not transmitted in transmission. In clocked synchronous mode, a fixed data length of 8 bits is used.
5
PE
0
R/W
Parity Enable (enabled only in asynchronous mode) When this bit is set to 1, the parity bit is added to transmit data before transmission, and the parity bit is checked in reception. For a multiprocessor format, parity bit addition and checking are not performed regardless of the PE bit setting.
4
O/E
0
R/W
Parity Mode (enabled only when the PE bit is 1 in asynchronous mode) 0: Selects even parity. When even parity is set, parity bit addition is performed in transmission so that the total number of 1 bits in the transmit character plus the parity bit is even. In reception, a check is performed to see if the total number of 1 bits in the receive character plus parity bit is even. 1: Selects odd parity. When odd parity is set, parity bit addition is performed in transmission so that the total number of 1 bits in the transmit character plus the parity bit is odd. In reception, a check is performed to see if the total number of 1 bits in the receive character plus the parity bit is odd.
3
STOP
0
R/W
Stop Bit Length (enabled only in asynchronous mode) Selects the stop bit length in transmission. 0: 1 stop bit 1: 2 stop bits In reception, only the first stop bit is checked. If the second stop bit is 0, it is treated as the start bit of the next transmit character.
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Section 13 Serial Communication Interface (SCI)
Bit 2
Bit Name MP
Initial Value 0
R/W R/W
Description Multiprocessor Mode (enabled only in asynchronous mode) When this bit is set to 1, the multiprocessor communication function is enabled. The PE bit and O/E bit settings are invalid in multiprocessor mode. For details, see section 13.5, Multiprocessor Communication Function.
1 0
CKS1 CKS0
0 0
R/W R/W
Clock Select 1 and 0 These bits select the clock source for the baud rate generator. 00: clock (n = 0) 01: /4 clock (n = 1) 10: /16 clock (n = 2) 11: /64 clock (n = 3) For the relationship between the bit rate register setting and the baud rate, see section 13.3.9, Bit Rate Register (BRR). n is the decimal representation of the value of n in bit rate register.
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name GM Initial Value 0 R/W R/W Description GS Mode Setting this bit to 1 allows GSM mode operation. In GSM mode, the TEND set timing is put forward to 11.0 etu from the start and the clock output control function is appended. For details, see section 13.7.8, Clock Output Control. 0: Normal smart card interface mode operation (initial value) * The TEND flag is generated 12.5 etu (11.5 etu in the block transfer mode) after the beginning of the start bit. Clock output on/off control only The TEND flag is generated 11.0 etu after the beginning of the start bit. In addition to clock output on/off control, high/low fixed control is supported (set using SCR).
* * * 6 BLK 0 R/W
1: GSM mode operation in smart card interface mode
Setting this bit to 1 allows block transfer mode operation. For details, see section 13.7.3, Block Transfer Mode. 0: Normal smart card interface mode operation (initial value) * * * Error signal transmission, detection, and automatic data retransmission are performed. The TXI interrupt is generated by the TEND flag. The TEND flag is set 12.5 etu (11.0 etu in the GSM mode) after transmission starts. Error signal transmission, detection, and automatic data retransmission are not performed. The TXI interrupt is generated by the TDRE flag. The TEND flag is set 11.5 etu (11.0 etu in the GSM mode) after transmission starts.
1: Operation in block transfer mode * * *
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Section 13 Serial Communication Interface (SCI)
Bit 5
Bit Name PE
Initial Value 0
R/W R/W
Description Parity Enable (enabled only in asynchronous mode) When this bit is set to 1, the parity bit is added to transmit data in transmission, and the parity bit is checked in reception. In Smart Card interface mode, this bit must be set to 1.
4
O/E
0
R/W
Parity Mode (enabled only when the PE bit is 1 in asynchronous mode) 0: Selects even parity. 1: Selects odd parity. For details on setting this bit in Smart Card interface mode, see section 13.7.2, Data Format (Except for Block Transfer Mode).
3 2
BCP1 BCP0
0 0
R/W R/W
Basic Clock Pulse 1 and 0 These bits specify the number of basic clock periods in a 1-bit transfer interval on the Smart Card interface. 00: 32 clock (S = 32) 01: 64 clock (S = 64) 10: 372 clock (S = 372) 11: 256 clock (S = 256) For details, see section 13.7.4, Receive Data Sampling Timing and Reception Margin. S stands for the value of S in bit rate register.
1 0
CKS1 CKS0
0 0
R/W R/W
Clock Select 1 and 0 These bits select the clock source for the baud rate generator. 00: clock (n = 0) 01: /4 clock (n = 1) 10: /16 clock (n = 2) 11: /64 clock (n = 3) For the relationship between the bit rate register setting and the baud rate, see section 13.3.9, Bit Rate Register (BRR). n is the decimal representation of the value of n in BRR.
Note: etu: Elementary time unit (time for transfer of 1 bit)
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Section 13 Serial Communication Interface (SCI)
13.3.6
Serial Control Register (SCR)
SCR is a register that enables or disables SCI transfer operations and interrupt requests, and is also used to selection of the transfer clock source. For details on interrupt requests, see section 13.8, Interrupt Sources. Some bit functions of SCR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Bit 7 Bit Name TIE Initial Value 0 R/W R/W Description Transmit Interrupt Enable When this bit is set to 1, the TXI interrupt request is enabled. TXI interrupt request cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0, or clearing the TIE bit to 0. 6 RIE 0 R/W Receive Interrupt Enable When this bit is set to 1, RXI and ERI interrupt requests are enabled. RXI and ERI interrupt request cancellation can be performed by reading 1 from the RDRF, FER, PER, or ORER flag in SSR, then clearing the flag to 0, or clearing the RIE bit to 0. 5 TE 0 R/W Transmit Enable When this bit is set to 1, transmission is enabled. In this state, serial transmission is started when transmit data is written to TDR and the TDRE flag in SSR is cleared to 0. SMR setting must be performed to decide the transfer format before setting the TE bit to 1. When this bit is cleared to 0, the transmission operation is disabled, and the TDRE flag is fixed at 1.
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Section 13 Serial Communication Interface (SCI)
Bit 4
Bit Name RE
Initial Value 0
R/W R/W
Description Receive Enable When this bit is set to 1, reception is enabled. Serial reception is started in this state when a start bit is detected in asynchronous mode or serial clock input is detected in clocked synchronous mode. SMR setting must be performed to decide the reception format before setting the RE bit to 1. Clearing the RE bit to 0 does not affect the RDRF, FER, PER, and ORER flags, which retain their states.
3
MPIE
0
R/W
Multiprocessor Interrupt Enable (enabled only when the MP bit in SMR is 1 in asynchronous mode) When this bit is set to 1, receive data in which the multiprocessor bit is 0 is skipped, and setting of the RDRF, FER, and ORER status flags in SSR is prohibited. On receiving data in which the multiprocessor bit is 1, this bit is automatically cleared and normal reception is resumed. For details, see section 13.5, Multiprocessor Communication Function. When receive data including MPB = 0 is received, receive data transfer from RSR to RDR, receive error detection, and setting of the RERF, FER, and ORER flags in SSR, are not performed. When receive data including MPB = 1 is received, the MPB bit in SSR is set to 1, the MPIE bit is cleared to 0 automatically, and generation of RXI and ERI interrupts (when the TIE and RIE bits in SCR are set to 1) and FER and ORER flag setting are enabled.
2
TEIE
0
R/W
Transmit End Interrupt Enable When this bit is set to 1, TEI interrupt request is enabled. TEI cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0 and clearing the TEND flag to 0, or clearing the TEIE bit to 0.
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Section 13 Serial Communication Interface (SCI)
Bit 1 0
Bit Name CKE1 CKE0
Initial Value 0 0
R/W R/W R/W
Description Clock Enable 1 and 0 Selects the clock source and SCK pin function. Asynchronous mode 00: On-chip baud rate generator SCK pin functions as I/O port 01: On-chip baud rate generator Outputs a clock of the same frequency as the bit rate from the SCK pin. 1X: External clock Inputs a clock with a frequency 16 times the bit rate from the SCK pin. Clocked synchronous mode 0X: Internal clock (SCK pin functions as clock output) 1X: External clock (SCK pin functions as clock input)
Legend: X: Don't care
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name TIE Initial Value 0 R/W R/W Description Transmit Interrupt Enable When this bit is set to 1, TXI interrupt request is enabled. TXI interrupt request cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0, or clearing the TIE bit to 0. 6 RIE 0 R/W Receive Interrupt Enable When this bit is set to 1, RXI and ERI interrupt requests are enabled. RXI and ERI interrupt request cancellation can be performed by reading 1 from the RDRF, FER, PER, or ORER flag in SSR, then clearing the flag to 0, or clearing the RIE bit to 0. 5 TE 0 R/W Transmit Enable When this bit is set to 1, transmission is enabled. In this state, serial transmission is started when transmit data is written to TDR and the TDRE flag in SSR is cleared to 0. SMR setting must be performed to decide the transfer format before setting the TE bit to 1. When this bit is cleared to 0, the transmission operation is disabled, and the TDRE flag is fixed at 1. 4 RE 0 R/W Receive Enable When this bit is set to 1, reception is enabled. Serial reception is started in this state when a start bit is detected in asynchronous mode or serial clock input is detected in clocked synchronous mode. SMR setting must be performed to decide the reception format before setting the RE bit to 1. Clearing the RE bit to 0 does not affect the RDRF, FER, PER, and ORER flags, which retain their states.
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Section 13 Serial Communication Interface (SCI)
Bit 3
Bit Name MPIE
Initial Value 0
R/W R/W
Description Multiprocessor Interrupt Enable (enabled only when the MP bit in SMR is 1 in asynchronous mode) Write 0 to this bit in Smart Card interface mode. When receive data including MPB = 0 is received, receive data transfer from RSR to RDR, receive error detection, and setting of the RERF, FER, and ORER flags in SSR, are not performed. When receive data including MPB = 1 is received, the MPB bit in SSR is set to 1, the MPIE bit is cleared to 0 automatically, and generation of RXI and ERI interrupts (when the TIE and RIE bits in SCR are set to 1) and FER and ORER flag setting are enabled.
2
TEIE
0
R/W
Transmit End Interrupt Enable Write 0 to this bit in Smart Card interface mode. TEI cancellation can be performed by reading 1 from the TDRE flag in SSR, then clearing it to 0 and clearing the TEND flag to 0, or clearing the TEIE bit to 0.
1 0
CKE1 CKE0
0 0
R/W R/W
Clock Enable 1 and 0 Enable or disable clock output from the SCK pin. The clock output can be dynamically switched in GSM mode. For details, see section 13.7.8, Clock Output Control. When the GM bit in SMR is 0: 00: Output disabled (SCK pin can be used as an I/O port pin) 01: Clock output 1X: Reserved When the GM bit in SMR is 1: 00: Output fixed low 01: Clock output 10: Output fixed high 11: Clock output
Legend: X: Don't care
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Section 13 Serial Communication Interface (SCI)
13.3.7
Serial Status Register (SSR)
SSR is a register containing status flags of the SCI and multiprocessor bits for transfer. 1 cannot be written to flags TDRE, RDRF, ORER, PER, and FER; they can only be cleared. Some bit functions of SSR differ between normal serial communication interface mode and Smart Card interface mode. * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Bit 7 Bit Name TDRE Initial Value 1 R/W
1
Description
R/(W)* Transmit Data Register Empty Displays whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1*3 When the DTC*2 is activated by a TXI interrupt request and writes data to TDR
[Clearing conditions] * * 6 RDRF 0
R/(W)*1 Receive Data Register Full Indicates that the received data is stored in RDR. [Setting condition] * When serial reception ends normally and receive data is transferred from RSR to RDR When 0 is written to RDRF after reading RDRF = 1*
2 3
[Clearing conditions] * * When the DTC* is activated by an RXI interrupt and transfers data from RDR
The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
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Section 13 Serial Communication Interface (SCI)
Bit 5
Bit Name ORER
Initial Value 0
R/W
1
Description
R/(W)* Overrun Error Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] * When the next serial reception is completed while RDRF = 1
The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial reception cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued either. [Clearing condition] * When 0 is written to ORER after reading ORER = 1*
3
The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0. 4 FER 0 R/(W)*1 Framing Error Indicates that a framing error occurred during reception in asynchronous mode, causing abnormal termination. [Setting condition] * When the stop bit is 0 In 2 stop bit mode, only the first stop bit is checked for a value to 1; the second stop bit is not checked. If a framing error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the FER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to FER after reading FER = 1*3 In 2-stop-bit mode, only the first stop bit is checked. The FER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
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Section 13 Serial Communication Interface (SCI)
Bit 3
Bit Name PER
Initial Value 0
R/W
1
Description
R/(W)* Parity Error Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] * When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to PER after reading PER = 1*
3
The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0. 2 TEND 1 R Transmit End Indicates that transmission has been ended. [Setting conditions] * * When the TE bit in SCR is 0 When TDRE = 1 at transmission of the last bit of a 1byte serial transmit character When 0 is written to TDRE after reading TDRE = 1 When the DTC*2 is activated by a TXI interrupt request and transfers transmit data to TDR
[Clearing conditions] * * 1 MPB 0 R
Multiprocessor Bit MPB stores the multiprocessor bit in the receive data. When the RE bit in SCR is cleared to 0 its previous state is retained.
0
MPBT
0
R/W
Multiprocessor Bit Transfer MPBT stores the multiprocessor bit to be added to the transmit data.
Notes: 1. Only a 0 can be written to this bit to clear the flag. 2. This bit is cleared by DTC only when DISEL is 0 with the transfer counter other than 0. 3. To clear the flag by using the CPU, write 0 to the flag and then read it once again.
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Section 13 Serial Communication Interface (SCI)
* Smart Card Interface Mode (When SMIF in SCMR Is 1)
Bit 7 Bit Name TDRE Initial Value 1 R/W
1
Description
R/(W)* Transmit Data Register Empty Indicates whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1*3 When the DTC*2 is activated by a TXI interrupt request and writes data to TDR
[Clearing conditions] * * 6 RDRF 0
R/(W)*1 Receive Data Register Full Indicates that the received data is stored in RDR. [Setting condition] * When serial reception ends normally and receive data is transferred from RSR to RDR When 0 is written to RDRF after reading RDRF = 1*
3
[Clearing conditions] * * When the DTC*2 is activated by an RXI interrupt and transfers data from RDR
The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
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Section 13 Serial Communication Interface (SCI)
Bit 5
Bit Name ORER
Initial Value 0
R/W
1
Description
R/(W)* Overrun Error Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] * When the next serial reception is completed while RDRF = 1
The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to ORER after reading ORER = 1*
3
The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0. 4 ERS 0 R/(W)* Error Signal Status Indicates that the status of an error, signal 1 returned from the reception side at reception [Setting condition] * * When the low level of the error signal is sampled When 0 is written to ERS after reading ERS = 1*3 [Clearing condition] The ERS flag is not affected and retains its previous state when the TE bit in SCR is cleared to 0.
1
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Section 13 Serial Communication Interface (SCI)
Bit 3
Bit Name PER
Initial Value 0
R/W
1
Description
R/(W)* Parity Error Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] * When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to PER after reading PER = 1*
3
The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
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Section 13 Serial Communication Interface (SCI)
Bit 2
Bit Name TEND
Initial Value 1
R/W R
Description Transmit End This bit is set to 1 when no error signal has been sent back from the receiving end and the next transmit data is ready to be transferred to TDR. [Setting conditions] * * When the TE bit in SCR is 0 and the ERS bit is also 0 When the ERS bit is 0 and the TDRE bit is 1 after the specified interval following transmission of 1-byte data.
The timing of bit setting differs according to the register setting as follows: When GM = 0 and BLK = 0, 12.5 etu after transmission starts When GM = 0 and BLK = 1, 11.5 etu after transmission starts When GM = 1 and BLK = 0, 11.0 etu after transmission starts When GM = 1 and BLK = 1, 11.0 etu after transmission starts [Clearing conditions] * * 1 0 MPB MPBT 0 0 R R/W When 0 is written to TDRE after reading TDRE = 1
2 When the DTC* is activated by a TXI interrupt and transfers transmit data to TDR
Multiprocessor Bit This bit is not used in Smart Card interface mode. Multiprocessor Bit Transfer Write 0 to this bit in Smart Card interface mode.
Notes: etu: Elementary time unit (time for transfer of 1 bit) 1. Only 0 can be written to this bit, to clear the flag. 2. This bit is cleared by DTC only when DISEL is 0 with the transfer counter other than 0. 3. To clear the flag by using the CPU, write 0 to the flag and then read it once again.
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Section 13 Serial Communication Interface (SCI)
13.3.8
Smart Card Mode Register (SCMR)
SCMR is a register that selects Smart Card interface mode and its communications format.
Bit 7 to 4 3 Bit Name -- SDIR Initial Value All 1 0 R/W -- R/W Description Reserved These bits are always read as 1, and cannot be modified. Smart Card Data Transfer Direction Selects the serial/parallel conversion format. 0: LSB-first in transfer 1: MSB-first in transfer The bit setting is valid only when the transfer data format is 8 bits. For 7-bit data, LSB-first is fixed. 2 SINV 0 R/W Smart Card Data Invert Specifies inversion of the data logic level. The SINV bit does not affect the logic level of the parity bit. To invert the parity bit, invert the O/E bit in SMR. 0: TDR contents are transmitted as they are. Receive data is stored as it is in RDR 1: TDR contents are inverted before being transmitted. Receive data is stored in inverted form in RDR 1 0 -- SMIF 1 0 -- R/W Reserved This bit is always read as 1, and cannot be modified. Smart Card Interface Mode Select This bit is set to 1 to make the SCI operate in Smart Card interface mode. 0: Normal asynchronous mode or clocked synchronous mode 1: Smart Card interface mode
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Section 13 Serial Communication Interface (SCI)
13.3.9
Bit Rate Register (BRR)
BRR is an 8-bit register that adjusts the bit rate. As the SCI performs baud rate generator control independently for each channel, different bit rates can be set for each channel. Table 13.2 shows the relationships between the N setting in BRR and bit rate B for normal asynchronous mode, clocked synchronous mode, and Smart Card interface mode. The initial value of BRR is H'FF, and it can be read or written to by the CPU at all times. Table 13.2 Relationships between N Setting in BRR and Bit Rate B
Communication Mode Asynchronous Mode Clocked Synchronous Mode Smart Card Interface Mode Legend: B: N: : n and S: Bit Rate
B= x 106 64 x 2 2n-1 x (N + 1) x 106 8 x 2 2n-1 x (N + 1)
x 106 S x 2 2n+1 x (N + 1)
Error
Error (%) = { x 106 B x 64 x 2 2n-1 x (N + 1) -1 } x 100
B=
Error (%) = { x 106 B x S x 2 2n+1 x (N + 1) -1 } x 100
B=
Bit rate (bit/s) BRR setting for baud rate generator (0 N 255) Operating frequency (MHz) Determined by the SMR settings shown in the following tables. SMR Setting n 0 1 2 3 BCP1 0 0 1 1 BCP0 0 1 0 1 S 32 64 372 256
SMR Setting CKS1 0 0 1 1 CKS0 0 1 0 1
Clock Source /4 /16 /64
Table 13.3 shows sample N settings in BRR in normal asynchronous mode. Table 13.4 shows the maximum bit rate for each frequency in normal asynchronous mode. Table 13.6 shows sample N settings in BRR in clocked synchronous mode. Table 13.8 shows sample N settings in BRR in Smart Card interface mode. In Smart Card interface mode, S (the number of basic clock periods in a 1-bit transfer interval) can be selected. For details, see section 13.7.4, Receive Data Sampling Timing and Reception Margin. Tables 13.5 and 13.7 show the maximum bit rates with external clock input.
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Section 13 Serial Communication Interface (SCI)
Table 13.3 BRR Settings for Various Bit Rates (Asynchronous Mode)
Operating Frequency (MHz) 8 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 2 1 1 0 0 0 0 0 0 N Error (%) 9.8304 nN 2 2 1 1 0 0 0 0 0 0 0 Error (%) nN 2 2 2 1 1 0 0 0 0 0 0 10 Error (%) nN 2 2 2 1 1 0 0 0 0 0 0 12 12.288 Error (%) nN 2 2 2 1 1 0 0 0 Error (%)
141 0.03 103 0.16 207 0.16 103 0.16 207 0.16 103 0.16 51 25 12 7 0.16 0.16 0.16 0.00 --
174 -0.26 127 0.00 255 0.00 127 0.00 255 0.00 127 0.00 63 31 15 9 7 0.00 0.00 0.00 -1.70 0.00
177 -0.25 129 0.16 64 0.16
212 0.03 155 0.16 77 0.16
217 0.08 159 0.00 79 0.00
129 0.16 64 0.16
155 0.16 77 0.16
159 0.00 79 0.00
129 0.16 64 32 15 9 7 0.16 -1.36 1.73 0.00 1.73
155 0.16 77 38 19 11 9 0.16 0.16
159 0.00 79 39 19 11 9 0.00 0.00 0.00 2.40 0.00
-2.34 0 0.00 0
----
-2.34 0
Operating Frequency (MHz) 14 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 2 2 2 1 1 0 0 0 0 0 -- N 248 181 90 181 90 181 90 45 22 13 -- Error (%) -0.17 0.16 0.16 0.16 0.16 0.16 0.16 -0.93 -0.93 0.00 -- n 3 2 2 1 1 0 0 0 0 0 0 14.7456 N 64 191 95 191 95 191 95 47 23 14 11 Error (%) 0.70 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 n 3 2 2 1 1 0 0 0 0 0 0 N 70 207 103 207 103 207 103 51 25 15 12 16 Error (%) 0.03 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.00 0.16 n 3 2 2 1 1 0 0 0 0 0 0 17.2032 N 75 223 111 223 111 223 111 55 27 16 13 Error (%) 0.48 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.20 0.00
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Section 13 Serial Communication Interface (SCI)
Operating Frequency (MHz) 18 Bit Rate (bps) n 110 150 300 600 1200 2400 4800 9600 19200 31250 38400 3 2 2 1 1 0 0 0 0 0 0 N 79 233 116 233 116 233 116 58 28 17 14 Error (%) -0.12 0.16 0.16 0.16 0.16 0.16 0.16 -0.69 1.02 0.00 -2.34 n 3 2 2 1 1 0 0 0 0 0 0 19.6608 N 86 255 127 255 127 255 127 63 31 19 15 Error (%) 0.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -1.70 0.00 n 3 3 2 2 1 1 0 0 0 0 0 N 88 64 129 64 129 64 129 64 32 19 15 20 Error (%) -0.25 0.16 0.16 0.16 0.16 0.16 0.16 0.16 -1.36 0.00 1.73 n 3 3 2 2 1 1 0 0 0 0 0 N 110 80 162 80 162 80 162 80 40 24 19 25 Error (%) -0.02 0.47 -0.15 0.47 -0.15 0.47 -0.15 0.47 -0.76 0.00 1.73
Table 13.4 Maximum Bit Rate for Each Frequency (Asynchronous Mode)
(MHz) 8 9.8304 10 12 12.288 14 14.7456 16 17.2032 18 19.6608 20 25 Maximum Bit Rate (bit/s) 250000 307200 312500 375000 384000 437500 460800 500000 537600 562500 614400 625000 781250 n 0 0 0 0 0 0 0 0 0 0 0 0 0 N 0 0 0 0 0 0 0 0 0 0 0 0 0
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Section 13 Serial Communication Interface (SCI)
Table 13.5 Maximum Bit Rate with External Clock Input (Asynchronous Mode)
(MHz) 8 9.8304 10 12 12.288 14 14.7456 16 17.2032 18 19.6608 20 25 External Input Clock (MHz) 2.0000 2.4576 2.5000 3.0000 3.0720 3.5000 3.6864 4.0000 4.3008 4.5000 4.9152 5.0000 6.2500 Maximum Bit Rate (bit/s) 125000 153600 156250 187500 192000 218750 230400 250000 268800 281250 307200 312500 390625
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Section 13 Serial Communication Interface (SCI)
Table 13.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode)
Operating Frequency (MHz) Bit Rate (bps) 250 500 1k 2.5k 5k 10k 25k 50k 100k 250k 500k 1M 2.5M 5M Legend: Blank: Cannot be set. --: Can be set, but there will be a degree of error. *: Continuous transfer is not possible. 8 n 3 2 2 1 1 0 0 0 0 0 0 0 N 124 249 124 199 99 199 79 39 19 7 3 1 0 0* n -- -- -- 1 1 0 0 0 0 0 0 10 N -- -- -- 249 124 249 99 49 24 9 4 n 3 3 2 2 1 1 0 0 0 0 0 0 16 N 249 124 249 99 199 99 159 79 39 15 7 3 -- -- 2 1 1 0 0 0 0 0 0 0 0 -- -- 124 249 124 199 99 49 19 9 4 1 0* 3 2 2 1 0 0 0 0 -- -- -- -- 97 155 77 155 249 124 62 24 -- -- -- -- n 20 N n 25 N
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Section 13 Serial Communication Interface (SCI)
Table 13.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)
(MHz) 8 10 12 14 16 18 20 25 External Input Clock (MHz) 1.3333 1.6667 2.0000 2.3333 2.6667 3.0000 3.3333 4.1667 Maximum Bit Rate (bps) 1333333.3 1666666.7 2000000.0 2333333.3 2666666.7 3000000.0 3333333.3 4166666.7
Table 13.8 Examples of Bit Rate for Various BRR Settings (Smart Card Interface Mode) (When n = 0 and S = 372)
Operating Frequency (MHz) Bit Rate (bps) N 9600 1 10.00 Error (%) 30.00 N 1 10.7136 Error (%) 25.00 N 1 13.00 Error (%) 8.99 N 1 14.2848 Error (%) 0.00
Operating Frequency (MHz) Bit Rate (bps) 9600 16.00 N 1 Error (%) 12.01 N 2 18.00 Error (%) 15.99 N 2 20.00 Error (%) 6.66 N 3 25.00 Error (%) 12.49
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Section 13 Serial Communication Interface (SCI)
Table 13.9 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode) (when S = 372)
(MHz) 10.00 10.7136 13.00 14.2848 16.00 18.00 20.00 25.00 Maximum Bit Rate (bps) 13441 14400 17473 19200 21505 24194 26882 33602 n 0 0 0 0 0 0 0 0 N 0 0 0 0 0 0 0 0
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Section 13 Serial Communication Interface (SCI)
13.4
Operation in Asynchronous Mode
Figure 13.2 shows the general format for asynchronous serial communication. One frame consists of a start bit (low level), followed by data, a parity bit, and finally stop bits (high level). In asynchronous serial communication, the transmission line is usually held in the mark state (high level). The SCI monitors the transmission line, and when it goes to the space state (low level), recognizes a start bit and starts serial communication. Inside the SCI, the transmitter and receiver are independent units, enabling full-duplex communication. Both the transmitter and the receiver also have a double-buffered structure, so that data can be read or written during transmission or reception, enabling continuous data transfer. In asynchronous mode, the SCI performs synchronization at the falling edge of the start bit in reception. The SCI samples the data on the 8th pulse of a clock with a frequency of 16 times the length of one bit, so that the transfer data is latched at the center of each bit.
Idle state (mark state) 1 0/1 Parity bit 1 bit, or none 1 1
1 Serial data 0 Start bit 1 bit
LSB D0 D1 D2 D3 D4 D5 D6
MSB D7
Stop bit
Transmit/receive data 7 or 8 bits
1 or 2 bits
One unit of transfer data (character or frame)
Figure 13.2 Data Format in Asynchronous Communication (Example with 8-Bit Data, Parity, Two Stop Bits) 13.4.1 Data Transfer Format
Table 13.10 shows the data transfer formats that can be used in asynchronous mode. Any of 12 transfer formats can be selected according to the SMR setting. For details on the multiprocessor bit, see section 13.5, Multiprocessor Communication Function.
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Section 13 Serial Communication Interface (SCI)
Table 13.10 Serial Transfer Formats (Asynchronous Mode)
SMR Settings CHR 0 0 0 0 1 1 1 1 0 0 1 1 PE 0 0 1 1 0 0 1 1 -- -- -- -- MP 0 0 0 0 0 0 0 0 1 1 1 1 STOP 0 1 0 1 0 1 0 1 0 1 0 1 1 S S S S S S S S S S S S Serial Transfer Format and Frame Length 2 3 4 5 6 7 8 9 10 STOP STOPSTOP P STOP P STOPSTOP STOP STOP STOP P STOP P STOPSTOP MPB STOP MPB STOPSTOP MPB STOP MPB STOPSTOP 11 12
8-bit data 8-bit data 8-bit data 8-bit data 7-bit data 7-bit data 7-bit data 7-bit data 8-bit data 8-bit data 7-bit data 7-bit data
Legend: S: Start bit STOP: Stop bit P: Parity bit MPB: Multiprocessor bit
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Section 13 Serial Communication Interface (SCI)
13.4.2
Receive Data Sampling Timing and Reception Margin in Asynchronous Mode
In asynchronous mode, the SCI operates on a basic clock with a frequency of 16 times the transfer rate. In reception, the SCI samples the falling edge of the start bit using the basic clock, and performs internal synchronization. Receive data is latched internally at the rising edge of the 8th pulse of the basic clock as shown in figure 13.6. Thus, the reception margin in asynchronous mode is given by formula (1) below.
M = | (0.5 - | D - 0.5 | 1 ) - (L - 0.5) F - (1 + F) | x 100 [%] N 2N
... Formula (1) Where M: N: D: L: F: Reception margin (%) Ratio of bit rate to clock (N = 16) Clock duty (D = 0 to 1.0) Frame length (L = 9 to 12) Absolute value of clock rate deviation
Assuming values of F (absolute value of clock rate deviation) = 0, D (clock duty) = 0.5, and N (ratio of bit rate to clock) = 16 in formula (1), the reception margin can be given by the formula.
M = {0.5 - 1/(2 x 16)} x 100 [%] = 46.875%
However, this is only the computed value, and a margin of 20% to 30% should be allowed for in system design.
16 clocks 8 clocks 0 Internal basic clock Receive data (RxD) Synchronization sampling timing Data sampling timing 7 15 0 7 15 0
Start bit
D0
D1
Figure 13.3 Receive Data Sampling Timing in Asynchronous Mode
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Section 13 Serial Communication Interface (SCI)
13.4.3
Clock
Either an internal clock generated by the on-chip baud rate generator or an external clock input at the SCK pin can be selected as the SCI's serial clock, according to the setting of the C/A bit in SMR and the CKE0 and CKE1 bits in SCR. When an external clock is input at the SCK pin, the clock frequency should be 16 times the bit rate used. When the SCI is operated on an internal clock, the clock can be output from the SCK pin when setting CKE1 = 0 and CKE0 = 1. The frequency of the clock output in this case is equal to the bit rate, and the phase is such that the rising edge of the clock is in the middle of the transmit data, as shown in figure 13.4.
SCK TxD 0 D0 D1 D2 D3 D4 D5 D6 D7 0/1 1 1
1 frame
Figure 13.4 Relationship between Output Clock and Transfer Data Phase (Asynchronous Mode) 13.4.4 SCI Initialization (Asynchronous Mode)
Before transmitting and receiving data, you should first clear the TE and RE bits in SCR to 0, then initialize the SCI as described in figure 13.5. When the operating mode, or transfer format, is changed for example, the TE and RE bits must be cleared to 0 before making the change using the following procedure. When the TE bit is cleared to 0, the TDRE flag is set to 1. Note that clearing the RE bit to 0 does not initialize the contents of the RDRF, PER, FER, and ORER flags, or the contents of RDR. When the external clock is used in asynchronous mode, the clock must be supplied even during initialization.
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Section 13 Serial Communication Interface (SCI)
Start initialization
Clear TE and RE bits in SCR to 0
[1] Set the clock selection in SCR. Be sure to clear bits RIE, TIE, TEIE, and MPIE, and bits TE and RE, to 0. When the clock is selected in asynchronous mode, it is output immediately after SCR settings are made. [2] Set the data transfer format in SMR and SCMR. [2] [3] Write a value corresponding to the bit rate to BRR. Not necessary if an external clock is used. [4] Wait at least one bit interval, then set the TE bit or RE bit in SCR to 1. Also set the RIE, TIE, TEIE, and MPIE bits. Setting the TE and RE bits enables the TxD and RxD pins to be used.
Set CKE1 and CKE0 bits in SCR (TE, RE bits = 0)
[1]
Set data transfer format in SMR and SCMR Set value in BRR Wait
[3]
No 1-bit interval elapsed? Yes Set TE and RE* bits in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits
[4]
Note: * Set the RE bit while the RxD pin is driven 1. When the RE bit is set to 1 while the RxD pin is driven 0, it may be received as the start bit.

Figure 13.5 Sample SCI Initialization Flowchart
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Section 13 Serial Communication Interface (SCI)
13.4.5
Serial Data Transmission (Asynchronous Mode)
Figure 13.6 shows an example of operation for transmission in asynchronous mode. In transmission, the SCI operates as described below. 1. The SCI monitors the TDRE flag in SSR. If the flag is cleared to 0, the SCI recognizes that data has been written to TDR, and transfers the data from TDR to TSR. 2. After transferring data from TDR to TSR, the SCI sets the TDRE flag to 1 and starts transmission. If the TIE bit is set to 1 at this time, a transmit data empty interrupt request (TXI) is generated. Continuous transmission is possible because the TXI interrupt routine writes next transmit data to TDR before transmission of the current transmit data has been completed. 3. Data is sent from the TxD pin in the following order: start bit, transmit data, parity bit or multiprocessor bit (may be omitted depending on the format), and stop bit. 4. The SCI checks the TDRE flag at the timing for sending the stop bit. 5. If the TDRE flag is 0, the data is transferred from TDR to TSR, the stop bit is sent, and then serial transmission of the next frame is started. 6. If the TDRE flag is 1, the TEND flag in SSR is set to 1, the stop bit is sent, and then the "mark state" is entered, in which 1 is output. If the TEIE bit in SCR is set to 1 at this time, a TEI interrupt request is generated.
Start bit 0 D0 D1 Data D7 Parity Stop Start bit bit bit 0/1 1 0 D0 D1 Data D7 Parity Stop bit bit 0/1 1
1
1 Idle state (mark state)
TDRE TEND TXI interrupt Data written to TDR and TXI interrupt request generated TDRE flag cleared to 0 in request generated TXI interrupt service routine
TEI interrupt request generated
1 frame
Figure 13.6 Example of Operation in Transmission in Asynchronous Mode (Example with 8-Bit Data, Parity, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Figure 13.7 shows a sample flowchart for data transmission.
Initialization Start transmission
[1]
Read TDRE flag in SSR
[2]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. After the TE bit is set to 1, a frame of 1s is output, and transmission is enabled. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. [4] Break output at the end of serial transmission: To output a break in serial transmission, clear DR for the port corresponding to the TxD pin to 0, set DDR to 1, then clear the TE bit in SCR to 0.
No TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
No All data transmitted? Yes [3] Read TEND flag in SSR
No TEND = 1 Yes No Break output? Yes Clear DR to 0 and set DDR to 1
[4] Note: * The case, where the TDRE flag check and clearing are automatically executed by DTC, occurs only when the DISEL bit in DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the TDRE flag.
Clear TE bit in SCR to 0
Figure 13.7 Sample Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.4.6
Serial Data Reception (Asynchronous Mode)
Figure 13.8 shows an example of operation for reception in asynchronous mode. In serial reception, the SCI operates as described below. 1. The SCI monitors the communication line. If a start bit is detected, the SCI performs internal synchronization, receives receive data in RSR, and checks the parity bit and stop bit. 2. If an overrun error occurs (when reception of the next data is completed while the RDRF flag is still set to 1), the ORER bit in SSR is set to 1. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. Receive data is not transferred to RDR. The RDRF flag remains to be set to 1. 3. If a parity error is detected, the PER bit in SSR is set to 1 and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. 4. If a framing error is detected (when the stop bit is 0), the FER bit in SSR is set to 1 and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated. 5. If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt request is generated. Continuous reception is possible because the RXI interrupt routine reads the receive data transferred to RDR before reception of the next receive data has been completed.
Start bit 0 D0 D1 Data D7 Parity Stop Start bit bit bit 0/1 1 0 D0 D1 Data D7 Parity Stop bit bit 0/1 0
1
1 Idle state (mark state)
RDRF FER RXI interrupt request generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ERI interrupt request generated by framing error
1 frame
Figure 13.8 Example of SCI Operation in Reception (Example with 8-Bit Data, Parity, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Table 13.11 shows the states of the SSR status flags and receive data handling when a receive error is detected. If a receive error is detected, the RDRF flag retains its state before receiving data. Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 13.9 shows a sample flowchart for serial data reception. Table 13.11 SSR Status Flags and Receive Data Handling
SSR Status Flag RDRF* 1 0 0 1 1 0 1 Note: * ORER 1 0 0 1 1 0 1 FER 0 1 0 1 0 1 1 PER 0 0 1 0 1 1 1 Receive Data Lost Transferred to RDR Transferred to RDR Lost Lost Transferred to RDR Lost Receive Error Type Overrun error Framing error Parity error Overrun error + framing error Overrun error + parity error Framing error + parity error Overrun error + framing error + parity error
The RDRF flag retains the state it had before data reception.
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin.
No
[2] [3] Receive error processing and break detection: [2] If a receive error occurs, read the ORER, PER, and FER flags in SSR to identify the error. After performing the appropriate error processing, ensure Yes that the ORER, PER, and FER flags are PERFERORER = 1 all cleared to 0. Reception cannot be [3] resumed if any of these flags are set to No Error processing 1. In the case of a framing error, a break can be detected by reading the (Continued on next page) value of the input port corresponding to the RxD pin. [4] Read RDRF flag in SSR [4] SCI status check and receive data read: Read SSR and check that RDRF = 1, then read the receive data in RDR and RDRF = 1 clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. Yes Read ORER, PER, and FER flags in SSR Read receive data in RDR, and clear RDRF flag in SSR to 0 [5] Serial reception continuation procedure: To continue serial reception, before the stop bit for the current frame is received, read the RDRF flag, read RDR, and clear the RDRF flag to 0. The RDRF flag is cleared automatically when DTC* is activated by an RXI interrupt and the RDR value is read. Note: * The case, where the RDRF flag is automatically cleared by DTC, occurs only when the DISEL bit in DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the RDRF flag.
No All data received? Yes Clear RE bit in SCR to 0 [5]
Figure 13.9 Sample Serial Reception Data Flowchart (1)
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Section 13 Serial Communication Interface (SCI)
[3] Error processing
No ORER = 1 Yes Overrun error processing
No FER = 1 Yes Yes Break? No Framing error processing Clear RE bit in SCR to 0
No PER = 1 Yes Parity error processing
Clear ORER, PER, and FER flags in SSR to 0

Figure 13.9 Sample Serial Reception Data Flowchart (2)
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Section 13 Serial Communication Interface (SCI)
13.5
Multiprocessor Communication Function
Use of the multiprocessor communication function enables data transfer between a number of processors sharing communication lines by asynchronous serial communication using the multiprocessor format, in which a multiprocessor bit is added to the transfer data. When multiprocessor communication is performed, each receiving station is addressed by a unique ID code. The serial communication cycle consists of two component cycles; an ID transmission cycle that specifies the receiving station, and a data transmission cycle. The multiprocessor bit is used to differentiate between the ID transmission cycle and the data transmission cycle. If the multiprocessor bit is 1, the cycle is an ID transmission cycle; if the multiprocessor bit is 0, the cycle is a data transmission cycle. Figure 13.10 shows an example of inter-processor communication using the multiprocessor format. The transmitting station first sends the ID code of the receiving station with which it wants to perform serial communication as data with a 1 multiprocessor bit added. It then sends transmit data as data with a 0 multiprocessor bit added. When data with a 1 multiprocessor bit is received, the receiving station compares that data with its own ID. The station whose ID matches then receives the data sent next. Stations whose IDs do not match continue to skip data until data with a 1 multiprocessor bit is again received. The SCI uses the MPIE bit in SCR to implement this function. When the MPIE bit is set to 1, transfer of receive data from RSR to RDR, error flag detection, and setting the SSR status flags, RDRF, FER, and ORER to 1, are inhibited until data with a 1 multiprocessor bit is received. On reception of a receive character with a 1 multiprocessor bit, the MPB bit in SSR is set to 1 and the MPIE bit is automatically cleared, thus normal reception is resumed. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt is generated. When the multiprocessor format is selected, the parity bit setting is rendered invalid. All other bit settings are the same as those in normal asynchronous mode. The clock used for multiprocessor communication is the same as that in normal asynchronous mode.
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Section 13 Serial Communication Interface (SCI)
Transmitting station Serial transmission line Receiving station A (ID = 01) Serial data Receiving station B (ID = 02) H'01 (MPB = 1) Receiving station C (ID = 03) H'AA (MPB = 0) Receiving station D (ID = 04)
ID transmission cycle = Data transmission cycle = receiving station Data transmission to specification receiving station specified by ID Legend: MPB: Multiprocessor bit
Figure 13.10 Example of Communication Using Multiprocessor Format (Transmission of Data H'AA to Receiving Station A)
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Section 13 Serial Communication Interface (SCI)
13.5.1
Multiprocessor Serial Data Transmission
Figure 13.11 shows a sample flowchart for multiprocessor serial data transmission. For an ID transmission cycle, set the MPBT bit in SSR to 1 before transmission. For a data transmission cycle, clear the MPBT bit in SSR to 0 before transmission. All other SCI operations are the same as those in asynchronous mode.
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Section 13 Serial Communication Interface (SCI)
Initialization Start transmission
[1]
Read TDRE flag in SSR
[2]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. After the TE bit is set to 1, a frame of 1s is output, and transmission is enabled. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR. Set the MPBT bit in SSR to 0 or 1. Finally, clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request, and data is written to TDR. [4] Break output at the end of serial transmission: To output a break in serial transmission, set the port DR to 0, set DDR to 1, then clear the TE bit in SCR to 0.
No TDRE = 1 Yes Write transmit data to TDR and set MPBT bit in SSR
Clear TDRE flag to 0
No All data transmitted? Yes [3]
Read TEND flag in SSR
No TEND = 1 Yes No Break output? Yes [4]
Clear DR to 0 and set DDR to 1
Note: * The case, where the TDRE flag is automatically cleared by DTC, occurs only when the DISEL bit in DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the TDRE flag.
Clear TE bit in SCR to 0

Figure 13.11 Sample Multiprocessor Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.5.2
Multiprocessor Serial Data Reception
Figure 13.13 shows a sample flowchart for multiprocessor serial data reception. If the MPIE bit in SCR is set to 1, data is skipped until data with a 1 multiprocessor bit is sent. On receiving data with a 1 multiprocessor bit, the receive data is transferred to RDR. An RXI interrupt request is generated at this time. All other SCI operations are the same as in asynchronous mode. Figure 13.12 shows an example of SCI operation for multiprocessor format reception.
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Section 13 Serial Communication Interface (SCI)
1
Start bit 0 D0 D1
MultiData (ID1) processor Stop bit bit D7 1 1
Start bit 0 D0
MultiData (Data1) processor Stop bit bit D1 D7 0
1
1 Mark state (idle state)
MPIE
RDRF
RDR value MPIE = 0 RXI interrupt request (multiprocessor interrupt) generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ID1 If not this station's ID, MPIE bit is set to 1 again RXI interrupt request is not generated, and RDR retains its state
(a) Data does not match station's ID
1
Start bit 0 D0 D1
MultiData (ID2) processor Stop bit bit D7 1 1
Start bit 0 D0
MultiData (Data2) processor Stop bit bit D1 D7 0
1
1 Mark state (idle state)
MPIE
RDRF
RDR value
ID1 MPIE = 0 RXI interrupt request (multiprocessor interrupt) generated RDR data read and RDRF flag cleared to 0 in RXI interrupt service routine
ID2 Matches this station's ID, so reception continues, and data is received in RXI interrupt service routine
Data2 MPIE bit set to 1 again
(b) Data matches station's ID
Figure 13.12 Example of SCI Operation in Reception (Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin. [2] ID reception cycle: Set the MPIE bit in SCR to 1. [3] SCI status check, ID reception and comparison: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and compare it with this station's ID. If the data is not this station's ID, set the MPIE bit to 1 again, and clear the RDRF flag to 0. If the data is this station's ID, clear the RDRF flag to 0. [4] SCI status check and data reception: Read SSR and check that the RDRF flag is set to 1, then read the data in RDR. [5] Receive error processing and break detection: If a receive error occurs, read the ORER and FER flags in SSR to identify the error. After performing the appropriate error processing, ensure that the ORER and FER flags are all cleared to 0. Reception cannot be resumed if either of these flags is set to 1. In the case of a framing error, a break can be detected by reading the RxD pin value.
Set MPIE bit in SCR to 1 Read ORER and FER flags in SSR
[2]
Yes FERORER = 1 No Read RDRF flag in SSR No RDRF = 1 Yes Read receive data in RDR No This station's ID? Yes Read ORER and FER flags in SSR Yes FERORER = 1 No Read RDRF flag in SSR No RDRF = 1 Yes Read receive data in RDR No All data received? Yes Clear RE bit in SCR to 0 (Continued on next page) [4] [3]
[5] Error processing
Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (1)
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Section 13 Serial Communication Interface (SCI)
[5]
Error processing
No ORER = 1 Yes Overrun error processing
No FER = 1 Yes Yes Break? No Framing error processing Clear RE bit in SCR to 0
Clear ORER, PER, and FER flags in SSR to 0

Figure 13.13 Sample Multiprocessor Serial Reception Flowchart (2)
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Section 13 Serial Communication Interface (SCI)
13.6
Operation in Clocked Synchronous Mode
Figure 13.14 shows the general format for clocked synchronous communication. In clocked synchronous mode, data is transmitted or received synchronous with clock pulses. In clocked synchronous serial communication, data on the transmission line is output from one falling edge of the serial clock to the next. In clocked synchronous mode, the SCI receives data in synchronous with the rising edge of the serial clock. After 8-bit data is output, the transmission line holds the MSB state. In clocked synchronous mode, no parity or multiprocessor bit is added. Inside the SCI, the transmitter and receiver are independent units, enabling full-duplex communication through the use of a common clock. Both the transmitter and the receiver also have a double-buffered structure, so data can be read or written during transmission or reception, enabling continuous data transfer.
One unit of transfer data (character or frame) * Synchronization clock LSB Serial data Don't care Note: * High except in continuous transfer Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 MSB Bit 7 Don't care *
Figure 13.14 Data Format in Clocked Synchronous Communication (For LSB-First) 13.6.1 Clock
Either an internal clock generated by the on-chip baud rate generator or an external synchronization clock input at the SCK pin can be selected, according to the setting of CKE0 and CKE1 bits in SCR. When the SCI is operated on an internal clock, the serial clock is output from the SCK pin. Eight serial clock pulses are output in the transfer of one character, and when no transfer is performed the clock is fixed high.
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Section 13 Serial Communication Interface (SCI)
13.6.2
SCI Initialization (Clocked Synchronous Mode)
Before transmitting and receiving data, the TE and RE bits in SCR should be cleared to 0, then the SCI should be initialized as described in a sample flowchart in figure 13.15. When the operating mode, or transfer format, is changed for example, the TE and RE bits must be cleared to 0 before making the change using the following procedure. When the TE bit is cleared to 0, the TDRE flag is set to 1. Note that clearing the RE bit to 0 does not change the contents of the RDRF, PER, FER, and ORER flags, or the contents of RDR.
Start initialization
[1] Set the clock selection in SCR. Be sure to clear bits RIE, TIE, TEIE, and MPIE, TE and RE, to 0. [2] Set the data transfer format in SMR and SCMR. [1] [3] Write a value corresponding to the bit rate to BRR. Not necessary if an external clock is used. [4] Wait at least one bit interval, then set the TE bit or RE bit in SCR to 1. Also set the RIE, TIE TEIE, and MPIE bits. Setting the TE and RE bits enables the TxD and RxD pins to be used.
Clear TE and RE bits in SCR to 0
Set CKE1 and CKE0 bits in SCR (TE, RE bits 0)
Set data transfer format in SMR and SCMR Set value in BRR Wait
[2]
[3]
No 1-bit interval elapsed? Yes
Set TE and RE bits in SCR to 1, and set RIE, TIE, TEIE, and MPIE bits
[4]

Note: In simultaneous transmit and receive operations, the TE and RE bits should both be cleared to 0 or set to 1 simultaneously.
Figure 13.15 Sample SCI Initialization Flowchart
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Section 13 Serial Communication Interface (SCI)
13.6.3
Serial Data Transmission (Clocked Synchronous Mode)
Figure 13.16 shows an example of SCI operation for transmission in clocked synchronous mode. In serial transmission, the SCI operates as described below. 1. The SCI monitors the TDRE flag in SSR, and if the flag is 0, the SCI recognizes that data has been written to TDR, and transfers the data from TDR to TSR. 2. After transferring data from TDR to TSR, the SCI sets the TDRE flag to 1 and starts transmission. If the TIE bit in SCR is set to 1 at this time, a transmit data empty interrupt (TXI) is generated. Continuous transmission is possible because the TXI interrupt routine writes the next transmit data to TDR before transmission of the current transmit data has been completed. 3. 8-bit data is sent from the TxD pin synchronized with the output clock when output clock mode has been specified, and synchronized with the input clock when use of an external clock has been specified. 4. The SCI checks the TDRE flag at the timing for sending the MSB (bit 7). 5. If the TDRE flag is cleared to 0, data is transferred from TDR to TSR, and serial transmission of the next frame is started. 6. If the TDRE flag is set to 1, the TEND flag in SSR is set to 1, and the TDRE flag maintains the output state of the last bit. If the TEIE bit in SCR is set to 1 at this time, a TEI interrupt request is generated. The SCK pin is fixed high.
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Section 13 Serial Communication Interface (SCI)
Figure 13.17 shows a sample flowchart for serial data transmission. Even if the TDRE flag is cleared to 0, transmission will not start while a receive error flag (ORER, FER, or PER) is set to 1. Make sure that the receive error flags are cleared to 0 before starting transmission. Note that clearing the RE bit to 0 does not clear the receive error flags.
Transfer direction Synchronization clock Serial data TDRE TEND TXI interrupt request generated Data written to TDR and TDRE flag cleared to 0 in TXI interrupt service routine 1 frame TXI interrupt request generated TEI interrupt request generated Bit 0 Bit 1 Bit 7 Bit 0 Bit 1 Bit 6 Bit 7
Figure 13.16 Sample SCI Transmission Operation in Clocked Synchronous Mode
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Section 13 Serial Communication Interface (SCI)
Initialization Start transmission
[1]
[1] SCI initialization: The TxD pin is automatically designated as the transmit data output pin. [2] SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. [3] Serial transmission continuation procedure: To continue serial transmission, be sure to read 1 from the TDRE flag to confirm that writing is possible, then write data to TDR, and then clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR.
Read TDRE flag in SSR
[2]
No TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
No All data transmitted? Yes [3]
Read TEND flag in SSR Note: * The case, where the TDRE flag is automatically cleared by DTC, occurs only when the DISEL bit in DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the TDRE flag.
No TEND = 1 Yes Clear TE bit in SCR to 0
Figure 13.17 Sample Serial Transmission Flowchart
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Section 13 Serial Communication Interface (SCI)
13.6.4
Serial Data Reception (Clocked Synchronous Mode)
Figure 13.18 shows an example of SCI operation for reception in clocked synchronous mode. In serial reception, the SCI operates as described below. 1. The SCI performs internal initialization synchronous with a synchronous clock input or output, starts receiving data, and stores the received data in RSR. 2. If an overrun error occurs (when reception of the next data is completed while the RDRF flag in SSR is still set to 1), the ORER bit in SSR is set to 1. If the RIE bit in SCR is set to 1 at this time, an ERI interrupt request is generated, receive data is not transferred to RDR, and the RDRF flag remains to be set to 1. 3. If reception is completed successfully, the RDRF bit in SSR is set to 1, and receive data is transferred to RDR. If the RIE bit in SCR is set to 1 at this time, an RXI interrupt request is generated. Continuous reception is possible because the RXI interrupt routine reads the receive data transferred to RDR before reception of the next receive data has finished.
Synchronization clock Serial data RDRF ORER RXI interrupt request generated RDR data read and RDRF flag cleared to 0 in RXI interrupt 1 frame RXI interrupt request generated ERI interrupt request generated by overrun error Bit 7 Bit 0 Bit 7 Bit 0 Bit 1 Bit 6 Bit 7
Figure 13.18 Example of SCI Operation in Reception Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 13.19 shows a sample flow chart for serial data reception. An overrun error occurs or synchronous clocks are output until the RE bit is cleared to 0 when an internal clock is selected and only receive operation is possible. When a transmission and reception will be carried out in a unit of one frame, be sure to carry out a dummy transmission with only one frame by the simultaneous transmit and receive operations at the same time.
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Section 13 Serial Communication Interface (SCI)
Initialization Start reception
[1]
[1] SCI initialization: The RxD pin is automatically designated as the receive data input pin. [2] [3] Receive error processing: If a receive error occurs, read the ORER flag in SSR, and after performing the appropriate error processing, clear the ORER flag to 0. Transfer cannot be resumed if the ORER flag is set to 1. [4] SCI status check and receive data read: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. [5] Serial reception continuation procedure: To continue serial reception, before the final bit of the current frame is received, reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0 should be finished. The RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read. Note: * The case, where the RDRF flag check and clearing are automatically executed by DTC, occurs only when the DISEL bit in DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the RDRF flag.
Read ORER flag in SSR
[2]
Yes ORER = 1 No [3] Error processing (Continued below) Read RDRF flag in SSR [4]
No RDRF = 1 Yes Read receive data in RDR, and clear RDRF flag in SSR to 0
No All data received? Yes Clear RE bit in SCR to 0 [5]
[3]
Error processing
Overrun error processing
Clear ORER flag in SSR to 0
Figure 13.19 Sample Serial Reception Flowchart
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Section 13 Serial Communication Interface (SCI)
13.6.5
Simultaneous Serial Data Transmission and Reception (Clocked Synchronous Mode)
Figure 13.20 shows a sample flowchart for simultaneous serial transmit and receive operations. The following procedure should be used for simultaneous serial data transmit and receive operations. To switch from transmit mode to simultaneous transmit and receive mode, after checking that the SCI has finished transmission and the TDRE and TEND flags are set to 1, clear TE to 0. Then simultaneously set TE and RE to 1 with a single instruction. To switch from receive mode to simultaneous transmit and receive mode, after checking that the SCI has finished reception, clear RE to 0. Then after checking that the RDRF and receive error flags (ORER, FER, and PER) are cleared to 0, simultaneously set TE and RE to 1 with a single instruction.
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Section 13 Serial Communication Interface (SCI)
[1]
Initialization Start transmission/reception
[1]
SCI initialization: The TxD pin is designated as the transmit data output pin, and the RxD pin is designated as the receive data input pin, enabling simultaneous transmit and receive operations. SCI status check and transmit data write: Read SSR and check that the TDRE flag is set to 1, then write transmit data to TDR and clear the TDRE flag to 0. Transition of the TDRE flag from 0 to 1 can also be identified by a TXI interrupt. Receive error processing: If a receive error occurs, read the ORER flag in SSR, and after performing the appropriate error processing, clear the ORER flag to 0. Transmission/reception cannot be resumed if the ORER flag is set to 1. SCI status check and receive data read: Read SSR and check that the RDRF flag is set to 1, then read the receive data in RDR and clear the RDRF flag to 0. Transition of the RDRF flag from 0 to 1 can also be identified by an RXI interrupt. Serial transmission/reception continuation procedure: To continue serial transmission/ reception, before the final bit of the current frame is received, finish reading the RDRF flag, reading RDR, and clearing the RDRF flag to 0. Also, before the final bit of the current frame is transmitted, read 1 from the TDRE flag to confirm that writing is possible. Then write data to TDR and clear the TDRE flag to 0. Checking and clearing of the TDRE flag is automatic when the DTC* is activated by a transmit data empty interrupt (TXI) request and data is written to TDR. Also, the RDRF flag is cleared automatically when the DTC* is activated by a receive data full interrupt (RXI) request and the RDR value is read.
Read TDRE flag in SSR No
[2]
[2]
TDRE = 1 Yes Write transmit data to TDR and clear TDRE flag in SSR to 0
[3]
Read ORER flag in SSR Yes ORER = 1 No Read RDRF flag in SSR No [3] Error processing [4]
[5] [4]
RDRF = 1 Yes Read receive data in RDR, and clear RDRF flag in SSR to 0
No
All data received? Yes Clear TE and RE bits in SCR to 0
[5]
Notes: When switching from transmit or receive operation to simultaneous transmit and receive operations, first clear the TE bit and RE bit to 0, then set both these bits to 1 by one instruction simultaneously.
* The case, where the TDRE flag or RDRF flag is automatically cleared by DTC, occurs only when the DISEL bit in the corresponding DTC is 0 with the transfer counter other than 0. Therefore, when the DISEL bit in the corresponding DTC is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear the corresponding flags.
Figure 13.20 Sample Flowchart of Simultaneous Serial Transmit and Receive Operations
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Section 13 Serial Communication Interface (SCI)
13.7
Operation in Smart Card Interface
The SCI supports an IC card (Smart Card) interface that conforms to ISO/IEC 7816-3 (Identification Card) as a serial communication interface extension function. Switching between the normal serial communication interface and the Smart Card interface mode is carried out by means of a register setting. 13.7.1 Pin Connection Example
Figure 13.21 shows an example of connection with the Smart Card. In communication with an IC card, as both transmission and reception are carried out on a single data transmission line, the TxD pin and RxD pin should be connected to the LSI pin. The data transmission line should be pulled up to the power supply (other than channel 2: P2Vcc, channel 2: P1Vcc) with a resistor. If an IC card is not connected, and the TE and RE bits are both set to 1, closed transmission/reception is possible, enabling self-diagnosis to be carried out. When the clock generated on the SCI is supplied to an IC card, the SCK pin output is input to the CLK pin of the IC card. When an internal clock is used in an IC card, this connection is not necessary. This LSI port output is used as the reset signal. Adding to these connections, connection of pins with power supply and ground is necessary.
P2 VCC TxD RxD SCK Px (port) This LSI Connected equipment Data line Clock line Reset line I/O CLK RST IC card
Figure 13.21 (1) Schematic Diagram of Smart Card Interface Pin Connections (Channels 0, 1, 3, and 4)
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Section 13 Serial Communication Interface (SCI)
P1 VCC TxD RxD SCK Px (port) This LSI Connected equipment Data line Clock line Reset line I/O CLK RST IC card
Figure 13.21 (2) Schematic Diagram of Smart Card Interface Pin Connections (Channel 2) 13.7.2 Data Format (Except for Block Transfer Mode)
Figure 13.22 shows the transfer data format in Smart Card interface mode. * One frame consists of 8-bit data plus a parity bit in asynchronous mode. * In transmission, a guard time of at least 2 etu (Elementary time unit: the time for transfer of one bit) is left between the end of the parity bit and the start of the next frame. * If a parity error is detected during reception, a low error signal level is output for one etu period, 10.5 etu after the start bit. * If an error signal is sampled during transmission, the same data is retransmitted automatically after a delay of 2 etu or longer.
When there is no parity error Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Transmitting station output
When a parity error occurs Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE
Transmitting station output Receiving station output
Legend: : Start bit DS D0 to D7 : Data bits : Parity bit Dp : Error signal DE
Figure 13.22 Normal Smart Card Interface Data Format
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Section 13 Serial Communication Interface (SCI)
Data transfer with other types of IC cards (direct convention and inverse convention) are performed as described in the following.
(Z) A Ds Z D0 Z D1 A D2 Z D3 Z D4 Z D5 A D6 A D7 Z Dp (Z) State
Figure 13.23 Direct Convention (SDIR = SINV = O/E = 0) With the direction convention type IC and the above sample start character, the logic 1 level corresponds to state Z and the logic 0 level to state A, and transfer is performed in LSB-first order. The start character data above is H'3B. For the direct convention type, clear the SDIR and SINV bits in SCMR to 0. According to Smart Card regulations, clear the O/E bit in SMR to 0 to select even parity mode.
(Z) A Ds Z D7 Z D6 A D5 A D4 A D3 A D2 A D1 A D0 Z Dp (Z) State
Figure 13.24 Inverse Convention (SDIR = SINV = O/E = 1) With the inverse convention type, the logic 1 level corresponds to state A and the logic 0 level to state Z, and transfer is performed in MSB-first order. The start character data for the above is H'3F. For the inverse convention type, set the SDIR and SINV bits in SCMR to 1. According to Smart Card regulations, even parity mode is the logic 0 level of the parity bit, and corresponds to state Z. In this LSI, the SINV bit inverts only data bits D0 to D7. Therefore, set the O/E bit in SMR to 1 to invert the parity bit for both transmission and reception. 13.7.3 Block Transfer Mode
Operation in block transfer mode is the same as that in the normal Smart Card interface mode, except for the following points. * In reception, though the parity check is performed, no error signal is output even if an error is detected. However, the PER bit in SSR is set to 1 and must be cleared before receiving the parity bit of the next frame. * In transmission, a guard time of at least 1 etu is left between the end of the parity bit and the start of the next frame. * In transmission, because retransmission is not performed, the TEND flag is set to 1, 11.5 etu after transmission start.
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Section 13 Serial Communication Interface (SCI)
* As with the normal Smart Card interface, the ERS flag indicates the error signal status, but since error signal transfer is not performed, this flag is always cleared to 0. Note: etu: Elementary time unit (time for transfer of 1 bit) 13.7.4 Receive Data Sampling Timing and Reception Margin
In Smart Card interface mode an internal clock generated by the on-chip baud rate generator can only be used as a transmission/reception clock. In this mode, the SCI operates on a basic clock with a frequency of 32, 64, 372, or 256 times the transfer rate (fixed to 16 times in normal asynchronous mode) as determined by bits BCP1 and BCP0. In reception, the SCI samples the falling edge of the start bit using the basic clock, and performs internal synchronization. As shown in figure 13.25, by sampling receive data at the rising-edge of the 16th, 32nd, 186th, or 128th pulse of the basic clock, data can be latched at the middle of the bit. The reception margin is given by the following formula.
M = | (0.5 - 1 | D - 0.5 | ) - (L - 0.5) F - (1 + F) | x 100% 2N N
Where M: Reception margin (%) N: Ratio of bit rate to clock (N = 32, 64, 372, and 256) D: Clock duty (D = 0 to 1.0) L: Frame length (L = 10) F: Absolute value of clock frequency deviation Assuming values of F = 0, D = 0.5 and N = 372 in the above formula, the reception margin formula is as follows.
M = (0.5 - 1/2 x 372) x 100% = 49.866%
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Section 13 Serial Communication Interface (SCI)
372 clocks 186 clocks 0 Internal basic clock 185 371 0 185 371 0
Receive data (RxD) Synchronization sampling timing
Start bit
D0
D1
Data sampling timing
Figure 13.25 Receive Data Sampling Timing in Smart Card Interface Mode (Using Clock of 372 Times the Transfer Rate) 13.7.5 Initialization
Before transmitting and receiving data, initialize the SCI as described below. Initialization is also necessary when switching from transmit mode to receive mode, or vice versa. 1. 2. 3. 4. Clear the TE and RE bits in SCR to 0. Clear the error flags ERS, PER, and ORER in SSR to 0. Set the GM, BLK, O/E, BCP0, BCP1, CKS0, and CKS1 bits in SMR. Set the PE bit to 1. Set the SMIF, SDIR, and SINV bits in SCMR. When the SMIF bit is set to 1, the TxD and RxD pins are both switched from ports to SCI pins, and are placed in the high-impedance state. 5. Set the value corresponding to the bit rate in BRR. 6. Set the CKE0 and CKE1 bits in SCR. Clear the TIE, RIE, TE, RE, MPIE, and TEIE bits to 0. If the CKE0 bit is set to 1, the clock is output from the SCK pin. 7. Wait at least one bit interval, then set the TIE, RIE, TE, and RE bits in SCR. Do not set the TE bit and RE bit at the same time, except for self-diagnosis. To switch from receive mode to transmit mode, after checking that the SCI has finished reception, initialize the SCI, and set RE to 0 and TE to 1. Whether SCI has finished reception or not can be checked with the RDRF, PER, or ORER flags. To switch from transmit mode to receive mode, after checking that the SCI has finished transmission, initialize the SCI, and set TE to 0 and RE to 1. Whether SCI has finished transmission or not can be checked with the TEND flag.
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Section 13 Serial Communication Interface (SCI)
13.7.6
Serial Data Transmission (Except for Block Transfer Mode)
As data transmission in Smart Card interface mode involves error signal sampling and retransmission processing, the operations are different from those in normal serial communication interface mode (except for block transfer mode). Figure 13.26 illustrates the retransfer operation when the SCI is in transmit mode. 1. If an error signal is sent back from the receiving end after transmission of one frame is complete, the ERS bit in SSR is set to 1. If the RIE bit in SCR is enabled at this time, an ERI interrupt request is generated. The ERS bit in SSR should be cleared to 0 by the time the next parity bit is sampled. 2. The TEND bit in SSR is not set for a frame in which an error signal indicating an abnormality is received. Data is retransferred from TDR to TSR, and retransmitted automatically. 3. If an error signal is not sent back from the receiving end, the ERS bit in SSR is not set. Transmission of one frame, including a retransfer, is judged to have been completed, and the TEND bit in SSR is set to 1. If the TIE bit in SCR is enabled at this time, a TXI interrupt request is generated. Writing transmit data to TDR transfers the next transmit data. Figure 13.28 shows a flowchart for transmission. A sequence of transmit operations can be performed automatically by specifying the DTC to be activated with a TXI interrupt source. In a transmit operation, the TDRE flag is set to 1 at the same time as the TEND flag in SSR is set, and a TXI interrupt will be generated if the TIE bit in SCR has been set to 1. If the TXI request is designated beforehand as a DTC activation source, the DTC will be activated by the TXI request, and transfer of the transmit data will be carried out. At this moment, when the DISEL bit in DTC is 0 and the transfer counter is other than 0, the TDRE and TEND flags are automatically cleared to 0 when data is transferred by the DTC. When the DISEL bit in the corresponding DTC is 1, or both the DISEL bit and the transfer counter are 0, flags are not cleared although the transfer data is written to TDR by DTC. Consequently, give the CPU an instruction of flag clear processing. In addition, in the event of an error, the SCI retransmits the same data automatically. During this period, the TEND flag remains cleared to 0 and the DTC is not activated. Therefore, the SCI and DTC will automatically transmit the specified number of bytes in the event of an error, including retransmission. However, the ERS flag is not cleared automatically when an error occurs, and so the RIE bit should be set to 1 beforehand so that an ERI request will be generated in the event of an error, and the ERS flag will be cleared. When performing transfer using the DTC, it is essential to set and enable the DTC before carrying out SCI setting. For details on the DTC setting procedures, see section 8, Data Transfer Controller (DTC).
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Section 13 Serial Communication Interface (SCI)
nth transfer frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE TDRE Transfer to TSR from TDR TEND
Retransferred frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp (DE)
Transfer frame n+1 Ds D0 D1 D2 D3 D4
Transfer to TSR from TDR
Transfer to TSR from TDR
FER/ERS
Figure 13.26 Retransfer Operation in SCI Transmit Mode The timing for setting the TEND flag depends on the value of the GM bit in SMR. The TEND flag set timing is shown in figure 13.27.
I/O data TXI (TEND interrupt) When GM = 0
Ds
D0
D1
D2
D3
D4
D5
D6
D7
Dp
DE Guard time
12.5etu
11.0etu When GM = 1
Legend: Ds D0 to D7 Dp DE Note:
: Start bit : Data bits : Parity bit : Error signal etu: Elementary time unit (time for transfer of 1 bit)
Figure 13.27 TEND Flag Generation Timing in Transmission Operation
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Section 13 Serial Communication Interface (SCI)
Start
Initialization Start transmission
ERS = 0? Yes
No
Error processing No TEND = 1? Yes Write data to TDR, and clear TDRE flag in SSR to 0
No All data transmitted ? Yes No ERS = 0? Yes Error processing No TEND = 1? Yes Clear TE bit to 0
End
Figure 13.28 Example of Transmission Processing Flow
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Section 13 Serial Communication Interface (SCI)
13.7.7
Serial Data Reception (Except for Block Transfer Mode)
Data reception in Smart Card interface mode uses the same operation procedure as for normal serial communication interface mode. Figure 13.29 illustrates the retransfer operation when the SCI is in receive mode. 1. If an error is found when the received parity bit is checked, the PER bit in SSR is automatically set to 1. If the RIE bit in SCR is set at this time, an ERI interrupt request is generated. The PER bit in SSR should be kept cleared to 0 until the next parity bit is sampled. 2. The RDRF bit in SSR is not set for a frame in which an error has occurred. 3. If no error is found when the received parity bit is checked, the PER bit in SSR is not set to 1, the receive operation is judged to have been completed normally, and the RDRF flag in SSR is automatically set to 1. If the RIE bit in SCR is enabled at this time, an RXI interrupt request is generated. Figure 13.30 shows a flowchart for reception. A sequence of receive operations can be performed automatically by specifying the DTC to be activated with an RXI interrupt source. In a receive operation, an RXI interrupt request is generated when the RDRF flag in SSR is set to 1. If the RXI request is designated beforehand as a DTC activation source, the DTC will be activated by the RXI request, and the receive data will be transferred. The RDRF flag is cleared to 0 automatically when the DISEL bit in DTC is 0 and the transfer counter is other than 0. When the DISEL bit in DTC is 1, or both the DISEL bit and the transfer counter are 0, flags are not cleared although the receive data is transferred by DTC. Consequently, give the CPU an instruction of flag clear processing. If an error occurs in receive mode and the ORER or PER flag is set to 1, a transfer error interrupt (ERI) request will be generated. Hence, so the error flag must be cleared to 0. In the event of an error, the DTC is not activated and receive data is skipped. Therefore, receive data is transferred for only the specified number of bytes in the event of an error. Even when a parity error occurs in receive mode and the PER flag is set to 1, the data that has been received is transferred to RDR and can be read from there. Note: For details on receive operations in block transfer mode, see section 13.4, Operation in Asynchronous Mode.
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Section 13 Serial Communication Interface (SCI)
nth transfer frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp DE RDRF
Retransferred frame Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Transfer frame n+1 (DE) Ds D0 D1 D2 D3 D4
PER
Figure 13.29 Retransfer Operation in SCI Receive Mode
Start
Initialization
Start reception
ORER = 0 and PER = 0 Yes
No
Error processing No
RDRF = 1? Yes
Read RDR and clear RDRF flag in SSR to 0
No
All data received? Yes Clear RE bit to 0
Figure 13.30 Example of Reception Processing Flow 13.7.8 Clock Output Control
When the GM bit in SMR is set to 1, the clock output level can be fixed with bits CKE0 and CKE1 in SCR. At this time, the minimum clock pulse width can be made the specified width. Figure 13.31 shows the timing for fixing the clock output level. In this example, GM is set to 1, CKE1 is cleared to 0, and the CKE0 bit is controlled.
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Section 13 Serial Communication Interface (SCI)
CKE0
SCK
Specified pulse width
Specified pulse width
Figure 13.31 Timing for Fixing Clock Output Level When turning on the power or switching between Smart Card interface mode and software standby mode, the following procedures should be followed in order to maintain the clock duty. Powering On: To secure clock duty from power-on, the following switching procedure should be followed. 1. The initial state is port input and high impedance. Use a pull-up resistor or pull-down resistor to fix the potential. 2. Fix the SCK pin to the specified output level with the CKE1 bit in SCR. 3. Set SMR and SCMR, and switch to smart card mode operation. 4. Set the CKE0 bit in SCR to 1 to start clock output. When Changing from Smart Card Interface Mode to Software Standby Mode: 1. Set the data register (DR) and data direction register (DDR) corresponding to the SCK pin to the value for the fixed output state in software standby mode. 2. Write 0 to the TE bit and RE bit in the serial control register (SCR) to halt transmit/receive operation. At the same time, set the CKE1 bit to the value for the fixed output state in software standby mode. 3. Write 0 to the CKE0 bit in SCR to halt the clock. 4. Wait for one serial clock period. During this interval, clock output is fixed at the specified level, with the duty preserved. 5. Make the transition to the software standby state. When Returning to Smart Card Interface Mode from Software Standby Mode: 1. Exit the software standby state. 2. Write 1 to the CKE0 bit in SCR and output the clock. Signal generation is started with the normal duty.
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Section 13 Serial Communication Interface (SCI)
Normal operation
Software standby
Normal operation
Figure 13.32 Clock Halt and Restart Procedure
13.8
13.8.1
Interrupt Sources
Interrupts in Normal Serial Communication Interface Mode
Table 13.12 shows the interrupt sources in normal serial communication interface mode. A different interrupt vector is assigned to each interrupt source, and individual interrupt sources can be enabled or disabled using the enable bits in SCR. When the TDRE flag in SSR is set to 1, a TXI interrupt request is generated. When the TEND flag in SSR is set to 1, a TEI interrupt request is generated. A TXI interrupt can activate the DTC to perform data transfer. The TDRE flag is cleared to 0 automatically when data is transferred by the DTC*. When the RDRF flag in SSR is set to 1, an RXI interrupt request is generated. When the ORER, PER, or FER flag in SSR is set to 1, an ERI interrupt request is generated. An RXI interrupt request can activate the DTC to transfer data. The RDRF flag is cleared to 0 automatically when data is transferred by the DTC*. A TEI interrupt is requested when the TEND flag is set to 1 and the TEIE bit is set to 1. If a TEI interrupt and a TXI interrupt are requested simultaneously, the TXI interrupt has priority for acceptance. However, if the TDRE and TEND flags are cleared simultaneously by the TXI interrupt routine, the SCI cannot branch to the TEI interrupt routine later. Note: * Flags are cleared only when the DISEL bit in DTC is 0 with the transfer couter other than 0.
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Section 13 Serial Communication Interface (SCI)
Table 13.12 Interrupt Sources of Serial Communication Interface Mode
Channel 0 Name ERI0 RXI0 TXI0 TEI0 1 ERI1 RXI1 TXI1 TEI1 2 ERI2 RXI2 TXI2 TEI2 3 ERI3 RXI3 TXI3 TEI3 4 ERI4 RXI4 TXI4 TEI4 Note: * Interrupt Source Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Receive Error Receive Data Full Transmit Data Empty Transmission End Interrupt Flag ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND ORER, FER, PER RDRF TDRE TEND DTC Activation Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Not possible Possible Possible Not possible Low Priority* High
Indicates the initial state immediately after a reset. Priorities in channels can be changed by the interrupt controller.
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Section 13 Serial Communication Interface (SCI)
13.8.2
Interrupts in Smart Card Interface Mode
Table 13.13 shows the interrupt sources in Smart Card interface mode. The transmit end interrupt (TEI) request cannot be used in this mode. Note: In case of block transfer mode, see section 13.8.1, Interrupts in Normal Serial Communication Interface Mode. Table 13.13 Interrupt Sources in Smart Card Interface Mode
DTC Activation Channel 0 Name ERI0 RXI0 TXI0 1 ERI1 RXI1 TXI1 2 ERI2 RXI2 TXI2 3 ERI3 RXI3 TXI3 4 ERI4 RXI4 TXI4 Note: * Interrupt Source Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Receive Error, detection Receive Data Full Transmit Data Empty Interrupt Flag ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND ORER, PER, ERS RDRF TEND Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Not possible Possible Possible Low Priority* High
Indicates the initial state immediately after a reset. Priorities in channels can be changed by the interrupt controller.
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Section 13 Serial Communication Interface (SCI)
13.9
13.9.1
Usage Notes
Module Stop Mode Setting
SCI operation can be disabled or enabled using the module stop control register. The initial setting is for SCI operation to be halted. Register access is enabled by clearing module stop mode. For details, see section 22, Power-Down Modes. 13.9.2 Break Detection and Processing (Asynchronous Mode Only)
When framing error (FER) detection is performed, a break can be detected by reading the RxD pin value directly. In a break, the input from the RxD pin becomes all 0s, setting the FER flag, and possibly the PER flag. Note that as the SCI continues the receive operation after receiving a break, even if the FER flag is cleared to 0, it will be set to 1 again. 13.9.3 Mark State and Break Detection (Asynchronous Mode Only)
When TE is 0, the TxD pin is used as an I/O port whose direction (input or output) and level are determined by DDR. This can be used to set the TxD pin to mark state (high level) or send a break during serial data transmission. To maintain the communication line at mark state until TE is set to 1, set both DDR and DR to 1. As TE is cleared to 0 at this point, the TxD pin becomes an I/O port, and 1 is output from the TxD pin. To send a break during serial transmission, first set PDR to 1 and DR to 0, and then clear TE to 0. When TE is cleared to 0, the transmitter is initialized regardless of the current transmission state, the TxD pin becomes an I/O port, and 0 is output from the TxD pin. 13.9.4 Receive Error Flags and Transmit Operations (Clocked Synchronous Mode Only)
Transmission cannot be started when a receive error flag (ORER, PER, or FER) is set to 1, even if the TDRE flag is cleared to 0. Be sure to clear the receive error flags to 0 before starting transmission. Note also that receive error flags cannot be cleared to 0 even if the RE bit is cleared to 0. 13.9.5 Restrictions on Use of DTC
* When an external clock source is used as the serial clock, the transmit clock should not be input until at least 5 clock cycles after TDR is updated by the DTC. Incorrect operation may occur if the transmit clock is input within 4 clocks after TDR is updated. (Figure 13.33)
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Section 13 Serial Communication Interface (SCI)
* When RDR is read by the DTC, be sure to set the activation source to the relevant SCI reception data full interrupt (RXI). * The flags are automatically cleared to 0 by the DTC during the data transfer only when the DISEL bit in DTC is 0 with the transfer counter other than 0. When the DISEL bit in the corresponding DTC is 1, or both the DISEL bit and the transfer counter are 0, give the CPU an instruction to clear flags. Note that, particularly during transmission, the TDRE flag that is not cleared by the CPU causes incorrect transmission.
SCK
t
TDRE LSB Serial data D0 D1 D2 D3 D4 D5 D6 D7
Note: When operating on an external clock, set t >4 clocks.
Figure 13.33 Example of Clocked Synchronous Transmission by DTC 13.9.6 Operation in Case of Mode Transition
* Transmission Operation should be stopped (by clearing TE, TIE, and TEIE bits to 0) before making a module stop mode, software standby mode, or watch mode transition. TSR, TDR, and SSR are reset. The output pin states in module stop mode, software standby mode, or watch mode depend on the port settings, and become high-level output after the relevant mode is cleared. If a transition is made during transmission, the data being transmitted will be undefined. When transmitting without changing the transmit mode after the relevant mode is cleared, transmission can be started by setting TE to 1 again, and performing the following sequence: SSR read -> TDR write -> TDRE clearance. To transmit with a different transmit mode after clearing the relevant mode, the procedure must be started again from initialization. Figure 13.34 shows a sample flowchart for mode transition during transmission. Port pin states are shown in figures 13.35 and 13.36. Operation should also be stopped (by clearing TE, TIE, and TEIE bits to 0) before making a transition from transmission by DTC transfer to module stop mode, software standby mode, or watch mode. To perform transmission with the DTC after the relevant mode is cleared, setting the TE and TIE bits to 1 will set the TXI flag and start DTC transmission.
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Section 13 Serial Communication Interface (SCI)

All data transmitted? Yes Read TEND flag in SSR
No
[1]
[1]
TEND = 1 Yes TE = 0 [2]
No
Data being transmitted is interrupted. After exiting software standby mode, etc., normal CPU transmission is possible by setting TE to 1, reading SSR, writing TDR, and clearing TDRE to 0, but note that if the DTC has been activated, the remaining data in DTCRAM will be transmitted when TE and TIE are set to 1. If TIE and TEIE are set to 1, clear them to 0 in the same way. Includes module stop mode and watch mode.
[2]
[3] Transition to software standby mode, etc. Exit from software standby mode, etc. Change operating mode? Yes Initialization TE = 1 [3]
No

Figure 13.34 Sample Flowchart for Mode Transition during Transmission
Transition to software standby Exit from software standby
Start of transmission
End of transmission
TE bit
SCK output pin
Port input/output
TxD output pin
Port input/output Port
High output
Start SCI TxD output
Stop
Port input/output Port
High output SCI TxD output
Figure 13.35 Asynchronous Transmission Using Internal Clock
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Section 13 Serial Communication Interface (SCI)
Start of transmission
End of transmission
Transition to software standby
Exit from software standby
TE bit
SCK output pin
Port input/output
TxD output pin Port input/output Port
Marking output SCI TxD output
Last TxD bit held
Port input/output Port
High output* SCI TxD output
Note: * Initialized by software standby.
Figure 13.36 Clocked Synchronous Transmission Using Internal Clock * Reception Receive operation should be stopped (by clearing RE to 0) before making a module stop mode, software standby mode, or watch mode transition. RSR, RDR, and SSR are reset. If a transition is made without stopping operation, the data being received will be invalid. To continue receiving without changing the reception mode after the relevant mode is cleared, set RE to 1 before starting reception. To receive with a different receive mode, the procedure must be started again from initialization. Figure 13.37 shows a sample flowchart for mode transition during reception.
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Section 13 Serial Communication Interface (SCI)
Read RDRF flag in SSR No [1] [1] Receive data being received becomes invalid. [2] Includes module stop mode and watch mode.
RDRF = 1 Yes Read receive data in RDR
RE = 0
Transition to software standby mode, etc. Exit from software standby mode, etc. Change operating mode? Yes Initialization
[2]
No
RE = 1

Figure 13.37 Sample Flowchart for Mode Transition during Reception 13.9.7 Notes when Switching from SCK Pin to Port Pin
* Problem in Operation: When DDR and DR are set to 1, SCI clock output is used in clocked synchronous mode, and the SCK pin is changed to the port pin while transmission is ended, port output is enabled after low-level output occurs for one half-cycle. When switching the SCK pin to the port pin by making the following settings while DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1, low-level output occurs for one halfcycle. 1. End of serial data transmission 2. TE bit = 0 3. C/A bit = 0 ... switchover to port output 4. Occurrence of low-level output (see figure 13.38)
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Section 13 Serial Communication Interface (SCI)
Half-cycle low-level output SCK/port 1. End of transmission Data TE C/A CKE1 CKE0 Bit 6 Bit 7 2. TE = 0 4. Low-level output
3. C/A = 0
Figure 13.38 Operation when Switching from SCK Pin to Port Pin * Usage Note: To prevent low-level output occurred when switching the SCK pin to port pin, follow the procedure described below. As this sample procedure temporarily places the SCK pin in the input state, the SCK/port pin should be pulled up beforehand with an external circuit. With DDR = 1, DR = 1, C/A = 1, CKE1 = 0, CKE0 = 0, and TE = 1, make the following settings in the order shown. 1. End of serial data transmission 2. TE bit = 0 3. CKE1 bit = 1 4. C/A bit = 0 ... switchover to port output 5. CKE1 bit = 0
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Section 13 Serial Communication Interface (SCI)
High-level output SCK/port 1. End of transmission Data TE C/A 3. CKE1 = 1 CKE1 CKE0 5. CKE1 = 0 Bit 6 Bit 7 2. TE = 0
4. C/A = 0
Figure 13.39 Operation when Switching from SCK Pin to Port Pin (Example of Preventing Low-Level Output)
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Section 13 Serial Communication Interface (SCI)
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Section 14 I C Bus Interface 2 (IIC2)
2
Section 14 I2C Bus Interface 2 (IIC2)
This LSI includes 2-channel I2C bus interface. The I2C bus interface 2 conforms to and provides a subset of the Philips I2C bus (inter-IC bus) interface functions. For the bus drive characteristics and the I2C bus timing, see section 24, Electrical Characteristics. The register configuration that controls the I2C bus differs partly from the Philips configuration, however. Figure 14.1 shows a block diagram of the I2C bus interface 2. Figure 14.2 shows an example of I/O pin connections to external circuits.
14.1
Features
* Selection of I2C format or clocked synchronous serial format * Continuous transmission/reception Since the shift register, transmit data register, and receive data register are independent from each other, the continuous transmission/reception can be performed. * Module stop mode can be set. I2C bus format * Start and stop conditions generated automatically in master mode * Selection of acknowledge output levels when receiving * Automatic loading of acknowledge bit when transmitting * Bit synchronization/wait function In master mode, the state of SCL is monitored per bit, and the timing is synchronized automatically. If transmission/reception is not yet possible, set the SCL to low until preparations are completed. * Six interrupt sources Transmit data empty (including slave-address match), transmit end, receive data full (including slave-address match), arbitration lost, NACK detection, and stop condition detection
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Section 14 I C Bus Interface 2 (IIC2)
2
* Direct bus drive Two pins, pins P35/SCL0 and P34/SDA0, function as NMOS open-drain outputs when the bus drive function is selected. Two pins, pins P33/SCL1 and P32/SDA1, are driven only by NMOS transistors when the bus drive function is selected. Clocked synchronous format * Four interrupt sources Transmit-data-empty, transmit-end, receive-data-full, and overrun error The I/O pins for channel 0 function as NMOS open-drain outputs, and it is possible to apply voltages in excess of the power supply (P2Vcc) voltage for this LSI. The maximum voltage must not exceed 0.3 V + this LSI's power supply voltage (P2Vcc). Since the I/O pins for channel 1 are driven only by NMOS transistors, so in terms of appearance they carry out the same operations as an NMOS open drain. However, the voltage which can be applied to the I/O pins depends on the voltage of the power supply (P2Vcc) of this LSI.
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Section 14 I C Bus Interface 2 (IIC2)
2
Transfer clock generation circuit
SCL
Output control
Transmission/ reception control circuit
ICCR1 ICCR2 ICMR
Noise canceler ICDRT SAR
SDA
Output control
ICDRS
Noise canceler
Address comparator ICDRR Bus state decision circuit Arbitration decision circuit ICIER Interrupt generator
ICSR
Legend: ICCR1 : I2C bus control register 1 ICCR2 : I2C bus control register 2 ICMR : I2C bus mode register ICSR : I2C bus status register ICIER : I2C bus interrupt enable register ICDRT : I2C bus transmit data register ICDRR : I2C bus receive data register ICDRS : I2C bus shift register SAR : Slave address register
Figure 14.1 Block Diagram of I2C Bus Interface 2
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Internal data bus
Interrupt request
Section 14 I C Bus Interface 2 (IIC2)
2
VDD
P2Vcc SCL in SCL out SDA SDA SCL SCL
SDA in SDA out
SCL SDA
(Master)
SCL in SCL out
SCL in SCL out
SDA in SDA out (Slave 1)
SDA in SDA out (Slave 2)
Figure 14.2 External Circuit Connections of I/O Pins
14.2
Input/Output Pins
Table 14.1 summarizes the input/output pins used by the I2C bus interface 2. Table 14.1 I2C Bus Interface Pins
Channel 0 Abbreviation SCL0 SDA0 1 Note: * SCL1 SDA1 I/O I/O I/O I/O I/O Description Serial clock input/output for channel 0 Serial data input/output for channel 0 Serial clock input/output for channel 1 Serial data input/output for channel 1
In the text, the channel subscript is omitted, and only SCL and SDA are used.
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SCL SDA
Section 14 I C Bus Interface 2 (IIC2)
2
14.3
Register Descriptions
The I2C bus interface 2 has the following registers. Channel 0 * * * * * * * * * I2C bus control register 1_0 (ICCR1_0) I2C bus control register 2_0 (ICCR2_0) I2C bus mode register_0 (ICMR_0) I2C bus interrupt enable register_0 (ICIER_0) I2C bus status register_0 (ICSR_0) I2C bus slave address register_0 (SAR_0) I2C bus transmit data register_0 (ICDRT_0) I2C bus receive data register_0 (ICDRR_0) I2C bus shift register_0 (ICDRS_0)
Channel 1 * * * * * * * * * I2C bus control register 1_1 (ICCR1_1) I2C bus control register 2_1 (ICCR2_1) I2C bus mode register_1 (ICMR_1) I2C bus interrupt enable register_1 (ICIER_1) I2C bus status register_1 (ICSR_1) I2C bus slave address register_1 (SAR_1) I2C bus transmit data register_1 (ICDRT_1) I2C bus receive data register_1 (ICDRR_1) I2C bus shift register_1 (ICDRS_1) I2C Bus Control Register 1 (ICCR1)
14.3.1
ICCR1 enables or disables the I2C bus interface 2, controls transmission or reception, and selects master or slave mode, transmission or reception, and transfer clock frequency in master mode.
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 7
Bit Name ICE
Initial Value 0
R/W R/W
Description I2C Bus Interface Enable 0: This module is halted. (SCL and SDA pins are set to port function.) 1: This bit is enabled for transfer operations. (SCL and SDA pins are bus drive state.)
6
RCVD
0
R/W
Reception Disable This bit enables or disables the next receive operation while TRS is 0 and until ICDRR is read. 0: Enables next reception 1: Disables next reception
5 4
MST TRS
0 0
R/W R/W
Master/Slave Select Transmit/Receive Select In master mode with the I C bus format, when arbitration is lost, MST and TRS are both reset by hardware, causing a transition to slave receive mode. Modification of the TRS bit should be made between transfer frames. After data receive has been started in slave receive mode, when the first seven bits of the receive data agree with the slave address that is set to SAR and the eighth bit is 1, TRS is automatically set to 1. If an overrun error occurs in master mode with the clock synchronous serial format, MST is cleared to 0 and slave receive mode is entered. Operating modes are described below according to MST and TRS combination. When clocked synchronous serial format is selected and MST is 1, clock is output. 00: Slave receive mode 01: Slave transmit mode 10: Master receive mode 11: Master transmit mode
2
3 2 1 0
CKS3 CKS2 CKS1 CKS0
0 0 0 0
R/W R/W R/W R/W
Transfer Clock Select 3 to 0 Set these bits according to the necessary transfer rate in master mode (see table 14.2). During slave mode, these bits are specified to ensure enough time for data setup in transmit mode. When CKS3 is 0, the time is 10 tcyc, and CKS3 is 1, 20 tcyc.
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Section 14 I C Bus Interface 2 (IIC2)
2
Table 14.2 Transfer Rate
Bit 3 CKS3 0 Bit 2 CKS2 0 Bit 1 CKS1 0 Bit 0 CKS0 0 1 1 0 1 1 0 0 1 1 0 1 1 0 0 0 1 1 0 1 1 0 0 1 1 0 1 Clock /28 /40 /48 /64 /168 /100 /112 /128 /56 /80 /96 /128 /336 /200 /224 /256 = 8 MHz 286 kHz 200 kHz 167 kHz 125 kHz 47.6 kHz 80.0 kHz 71.4 kHz 62.5 kHz 143 kHz 100 kHz 83.3 kHz 62.5 kHz 23.8 kHz 40.0 kHz 35.7 kHz 31.3 kHz Transfer Rate = 10 MHz = 16 MHz = 20 MHz = 25 MHz 357 kHz 250 kHz 208 kHz 156 kHz 59.5 kHz 100 kHz 89.3 kHz 78.1 kHz 179 kHz 125 kHz 104 kHz 78.1 kHz 29.8 kHz 50.0 kHz 44.6 kHz 39.1 kHz 571 kHz 400 kHz 333 kHz 250 kHz 95.2 kHz 160 kHz 143 kHz 125 kHz 286 kHz 200 kHz 167 kHz 125 kHz 47.6 kHz 80.0 kHz 71.4 kHz 62.5 kHz 714 kHz 500 kHz 417 kHz 313 kHz 119 kHz 200 kHz 179 kHz 156 kHz 357 kHz 250 kHz 208 kHz 156 kHz 59.5 kHz 100 kHz 89.3 kHz 78.1 kHz 893 kHz 625 kHz 521 kHz 391 kHz 149 kHz 250 kHz 223 kHz 195 kHz 446 kHz 313 kHz 260 kHz 195 kHz 74.4 kHz 125 kHz 112 kHz 97.7 kHz
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Section 14 I C Bus Interface 2 (IIC2)
2
14.3.2
I2C Bus Control Register 2 (ICCR2)
ICCR1 issues start/stop conditions, manipulates the SDA pin, monitors the SCL pin, and controls reset in the control part of the I2C bus interface 2.
Bit 7 Bit Name BBSY Initial Value 0 R/W R/W Description Bus Busy This bit enables to confirm whether the I C bus is occupied or released and to issue start/stop conditions in master mode. With the clocked synchronous serial format, this bit 2 has no meaning. With the I C bus format, this bit is set to 1 when the SDA level changes from high to low under the condition of SCL = high, assuming that the start condition has been issued. This bit is cleared to 0 when the SDA level changes from low to high under the condition of SCL = high, assuming that the stop condition has been issued. Write 1 to BBSY and 0 to SCP to issue a start condition. Follow this procedure when also re-transmitting a start condition. Write 0 in BBSY and 0 in SCP to issue a stop condition. To issue start/stop conditions, use the MOV instruction. 6 SCP 1 R/W Start/Stop Issue Condition Disable The SCP bit controls the issue of start/stop conditions in master mode. To issue a start condition, write 1 in BBSY and 0 in SCP. A retransmit start condition is issued in the same way. To issue a stop condition, write 0 in BBSY and 0 in SCP. This bit is always read as 1. If 1 is written, the data is not stored. 5 SDAO 1 R/W SDA Output Value Control This bit is used with SDAOP when modifying output level of SDA. This bit should not be manipulated during transfer. 0: When reading, SDA pin outputs low. When writing, SDA pin is changed to output low. 1: When reading, SDA pin outputs high. When writing, SDA pin is changed to output Hi-Z (outputs high by external pull-up resistance).
2
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 4
Bit Name SDAOP
Initial Value 1
R/W R/W
Description SDAO Write Protect This bit controls change of output level of the SDA pin by modifying the SDAO bit. To change the output level, clear SDAO and SDAOP to 0 or set SDAO to 1 and clear SDAOP to 0 by the MOV instruction. This bit is always read as 1.
3 2 1
SCLO IICRST
1 1 0
R R/W
This bit monitors SCL output level. When SCLO is 1, SCL pin outputs high. When SCLO is 0, SCL pin outputs low. Reserved This bit is always read as 1, and cannot be modified. IIC Control Part Reset This bit resets the control part except for I C2 registers. If this bit is set to 1 when hang-up occurs because of 2 2 communication failure during I C2 operation, I C2 control part can be reset without setting ports and initializing registers.
2
0
1
Reserved This bit is always read as 1, and cannot be modified.
14.3.3
I2C Bus Mode Register (ICMR)
ICMR selects whether the MSB or LSB is transferred first, performs master mode wait control, and selects the transfer bit count.
Bit 7 Bit Name MLS Initial Value 0 R/W R/W Description MSB-First/LSB-First Select 0: MSB-first 1: LSB-first Set this bit to 0 when the I C bus format is used.
2
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 6
Bit Name WAIT
Initial Value 0
R/W R/W
Description Wait Insertion Bit In master mode with the I2C bus format, this bit selects whether to insert a wait after data transfer except the acknowledge bit. When WAIT is set to 1, after the fall of the clock for the final data bit, low period is extended for two transfer clocks. If WAIT is cleared to 0, data and acknowledge bits are transferred consecutively with no wait inserted. The setting of this bit is invalid in slave mode with the I C bus format or with the clocked synchronous serial format.
2
5, 4 3
BCWP
All 1 1
R/W
Reserved These bits are always read as 1, and cannot be modified. BC Write Protect This bit controls the BC2 to BC0 modifications. When modifying BC2 to BC0, this bit should be cleared to 0 and use the MOV instruction. In clock synchronous serial mode, BC should not be modified. 0: When writing, values of BC2 to BC0 are set. 1: When reading, 1 is always read. When writing, settings of BC2 to BC0 are invalid.
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 2 1 0
Bit Name BC2 BC1 BC0
Initial Value 0 0 0
R/W R/W R/W R/W
Description Bit Counter 2 to 0 These bits specify the number of bits to be transferred next. When read, the remaining number of transfer bits is indicated. With the I2C bus format, the data is transferred with one addition acknowledge bit. Bit BC2 to BC0 settings should be made during an interval between transfer frames. If bits BC2 to BC0 are set to a value other than 000, the setting should be made while the SCL pin is low. The value returns to 000 at the end of a data transfer, including the acknowledge bit. With the clock synchronous serial format, these bits should not be modified. I C Bus Format 000: 9 bits 001: 2 bits 010: 3 bits 011: 4 bits 100: 5 bits 101: 6 bits 110: 7 bits 111: 8 bits
2
Clock Synchronous Serial Format 000: 001: 010: 011: 100: 101: 110: 111: 8 bits 1 bits 2 bits 3 bits 4 bits 5 bits 6 bits 7 bits
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Section 14 I C Bus Interface 2 (IIC2)
2
14.3.4
I2C Bus Interrupt Enable Register (ICIER)
ICIER enables or disables interrupt sources and acknowledge bits, sets acknowledge bits to be transferred, and confirms acknowledge bits to be received.
Bit 7 Bit Name TIE Initial Value 0 R/W R/W Description Transmit Interrupt Enable When the TDRE bit in ICSR is set to 1, this bit enables or disables the transmit data empty interrupt (TXI). 0: Transmit data empty interrupt request (TXI) is disabled. 1: Transmit data empty interrupt request (TXI) is enabled. 6 TEIE 0 R/W Transmit End Interrupt Enable This bit enables or disables the transmit end interrupt (TEI) at the rising of the ninth clock while the TDRE bit in ICSR is 1. TEI can be canceled by clearing the TEND bit or the TEIE bit to 0. 0: Transmit end interrupt request (TEI) is disabled. 1: Transmit end interrupt request (TEI) is enabled. 5 RIE 0 R/W Receive Interrupt Enable This bit enables or disables the receive data full interrupt request (RXI) and the overrun error interrupt request (ERI) with the clocked synchronous format, when a receive data is transferred from ICDRS to ICDRR and the RDRF bit in ICSR is set to 1. RXI can be canceled by clearing the RDRF or RIE bit to 0. 0: Receive data full interrupt request (RXI) and overrun error interrupt request (ERI) with the clocked synchronous format are disabled. 1: Receive data full interrupt request (RXI) and overrun error interrupt request (ERI) with the clocked synchronous format are enabled.
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 4
Bit Name NAKIE
Initial Value 0
R/W R/W
Description NACK Receive Interrupt Enable This bit enables or disables the NACK receive interrupt request (NAKI) and the overrun error (setting of the OVE bit in ICSR) interrupt request (ERI) with the clocked synchronous format, when the NACKF and AL bits in ICSR are set to 1. NAKI can be canceled by clearing the NACKF, OVE, or NAKIE bit to 0. 0: NACK receive interrupt request (NAKI) is disabled. 1: NACK receive interrupt request (NAKI) is enabled.
3
STIE
0
R/W
Stop Condition Detection Interrupt Enable 0: Stop condition detection interrupt request (STPI) is disabled. 1: Stop condition detection interrupt request (STPI) is enabled.
2
ACKE
0
R/W
Acknowledge Bit Judgement Select 0: The value of the receive acknowledge bit is ignored, and continuous transfer is performed. 1: If the receive acknowledge bit is 1, continuous transfer is halted.
1
ACKBR
0
R
Receive Acknowledge In transmit mode, this bit stores the acknowledge data that are returned by the receive device. This bit cannot be modified. 0: Receive acknowledge = 0 1: Receive acknowledge = 1
0
ACKBT
0
R/W
Transmit Acknowledge In receive mode, this bit specifies the bit to be sent at the acknowledge timing. 0: 0 is sent at the acknowledge timing. 1: 1 is sent at the acknowledge timing.
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Section 14 I C Bus Interface 2 (IIC2)
2
14.3.5
I2C Bus Status Register (ICSR)
ICSR performs confirmation of interrupt request flags and status.
Bit 7 Bit Name TDRE Initial Value 0 R/W R/W Description Transmit Data Register Empty [Setting conditions] * * * * When data is transferred from ICDRT to ICDRS and ICDRT becomes empty When TRS is set When a start condition (including re-transfer) has been issued When transmit mode is entered from receive mode in slave mode When 0 is written in TDRE after reading TDRE = 1 When data is written to ICDRT with an instruction
[Clearing conditions] * * 6 TEND 0 R/W
Transmit End [Setting conditions] * * When the ninth clock of SCL rises with the I C bus format while the TDRE flag is 1 When the final bit of transmit frame is sent with the clock synchronous serial format When 0 is written in TEND after reading TEND = 1 When data is written to ICDRT with an instruction
2
[Clearing conditions] * * 5 RDRF 0 R/W
Receive Data Register Full [Setting condition] * When a receive data is transferred from ICDRS to ICDRR When 0 is written in RDRF after reading RDRF = 1 When ICDRR is read with an instruction
[Clearing conditions] * *
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 4
Bit Name NACKF
Initial Value 0
R/W R/W
Description No Acknowledge Detection Flag [Setting condition] * When no acknowledge is detected from the receive device in transmission while the ACKE bit in ICIER is 1 When 0 is written in NACKF after reading NACKF = 1
[Clearing condition] * 3 STOP 0 R/W Stop Condition Detection Flag [Setting conditions] * * In master mode, when a stop condition is detected after frame transfer In slave mode, when a stop condition is detected after the general call address or the first byte slave address, next to detection of start condition, accords with the address set in SAR When 0 is written in STOP after reading STOP = 1
[Clearing condition] * 2 AL/OVE 0 R/W Arbitration Lost Flag/Overrun Error Flag This flag indicates that arbitration was lost in master mode 2 with the I C bus format and that the final bit has been received while RDRF = 1 with the clocked synchronous format. When two or more master devices attempt to seize the bus at nearly the same time, if the I2C bus interface detects data differing from the data it sent, it sets AL to 1 to indicate that the bus has been taken by another master. [Setting conditions] * * * If the internal SDA and SDA pin disagree at the rise of SCL in master transmit mode When the SDA pin outputs high in master mode while a start condition is detected When the final bit is received with the clocked synchronous format while RDRF = 1 When 0 is written in AL/OVE after reading AL/OVE=1
[Clearing condition] *
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit 1
Bit Name AAS
Initial Value 0
R/W R/W
Description Slave Address Recognition Flag In slave receive mode, this flag is set to 1 if the first frame following a start condition matches bits SVA6 to SVA0 in SAR. [Setting conditions] * * When the slave address is detected in slave receive mode When the general call address is detected in slave receive mode. When 0 is written in AAS after reading AAS=1
2
[Clearing condition] * 0 ADZ 0 R/W General Call Address Recognition Flag This bit is valid in I C bus format slave receive mode. [Setting condition] * When the general call address is detected in slave receive mode When 0 is written in ADZ after reading ADZ=1
[Clearing condition] *
14.3.6
Slave Address Register (SAR)
SAR selects the communication format and sets the slave address. When the chip is in slave mode with the I2C bus format, if the upper 7 bits of SAR match the upper 7 bits of the first frame received after a start condition, the chip operates as the slave device.
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Section 14 I C Bus Interface 2 (IIC2)
2
Bit Bit Name 7 6 5 4 3 2 1 0 SVA6 SVA5 SVA4 SVA3 SVA2 SVA1 SVA0 FS
Initial Value R/W 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W
Description Slave Address 6 to 0 These bits set a unique address in bits SVA6 to SVA0, differing form the addresses of other slave devices 2 connected to the I C bus.
Format Select 0: I2C bus format is selected. 1: Clocked synchronous serial format is selected.
14.3.7
I2C Bus Transmit Data Register (ICDRT)
ICDRT is an 8-bit readable/writable register that stores the transmit data. When ICDRT detects the space in the shift register (ICDRS), it transfers the transmit data which is written in ICDRT to ICDRS and starts transferring data. If the next transfer data is written to ICDRT during transferring data of ICDRS, continuous transfer is possible. If the MLS bit of ICMR is set to 1 and when the data is written to ICDRT, the MSB/LSB inverted data is read. The initial value of ICDRT is HFF. 14.3.8 I2C Bus Receive Data Register (ICDRR)
ICDRR is an 8-bit register that stores the receive data. When data of one byte is received, ICDRR transfers the receive data from ICDRS to ICDRR and the next data can be received. ICDRR is a receive-only register, therefore the CPU cannot write to this register. The initial value of ICDRR is HFF. 14.3.9 I2C Bus Shift Register (ICDRS)
ICDRS is a register that is used to transfer/receive data. In transmission, data is transferred from ICDRT to ICDRS and the data is sent from the SDA pin. In reception, data is transferred from ICDRS to ICDRR after data of one byte is received. This register cannot be read directly from the CPU.
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Section 14 I C Bus Interface 2 (IIC2)
2
14.4
Operation
The I2C bus interface can communicate either in I2C bus mode or clocked synchronous serial mode by setting FS in SAR. 14.4.1 I2C Bus Format
Figure 14.3 shows the I2C bus formats. Figure 14.4 shows the I2C bus timing. The first frame following a start condition always consists of 8 bits.
(a) I2C bus format (FS = 0) S 1 SLA 7 1 R/W 1 A 1 DATA n A 1 m A/A 1 P 1 n: Transfer bit count (n = 1 to 8) m: Transfer frame count (m 1)
(b) I2C bus format (Start condition retransmission, FS = 0) S 1 SLA 7 1 R/W 1 A 1 DATA n1 m1 A/A 1 S 1 SLA 7 1 R/W 1 A 1 DATA n2 m2 A/A 1 P 1
n1 and n2: Transfer bit count (n1 and n2 = 1 to 8) m1 and m2: Transfer frame count (m1 and m2 1)
Figure 14.3 I2C Bus Formats
SDA
SCL S
1-7 SLA
8 R/W
9 A
1-7 DATA
8
9 A
1-7 DATA
8
9 A P
Figure 14.4 I2C Bus Timing
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Section 14 I C Bus Interface 2 (IIC2)
2
Legend: S: Start condition. The master device drives SDA from high to low while SCL is high. SLA: Slave address R/W: Indicates the direction of data transfer: from the slave device to the master device when R/W is 1, or from the master device to the slave device when R/W is 0. A: Acknowledge. The receive device drives SDA to low. DATA: Transfer data P: Stop condition. The master device drives SDA from low to high while SCL is high.
14.4.2
Master Transmit Operation
In master transmit mode, the master device outputs the transmit clock and transmit data, and the slave device returns an acknowledge signal. For master transmit mode operation timing, see figures 14.5 and 14.6. The transmission procedure and operations in master transmit mode are described below. 1. Set the ICE bit in ICCR1 to 1. Set the MLS and WAIT bits in ICMR and the CKS3 to CKS0 bits in ICCR1 to 1. (Initial setting) 2. Read the BBSY flag in ICCR2 to confirm that the bus is free. Set the MST and TRS bits in ICCR1 to select master transmit mode. Then, write 1 to BBSY and 0 to SCP using MOV instruction. (Start condition issued) This generates the start condition. 3. After confirming that TDRE in ICSR has been set, write the transmit data (the first byte data show the slave address and R/W) to ICDRT. At this time, TDRE is automatically cleared to 0, and data is transferred from ICDRT to ICDRS. TDRE is set again. 4. When transmission of one byte data is completed while TDRE is 1, TEND in ICSR is set to 1 at the rise of the 9th transmit clock pulse. Read the ACKBR bit in ICIER, and confirm that the slave device has been selected. Then, write second byte data to ICDRT. When ACKBR is 1, the slave device has not been acknowledged, so issue the stop condition. To issue the stop condition, write 0 to BBSY and SCP using MOV instruction. SCL is fixed low until the transmit data is prepared or the stop condition is issued. 5. The transmit data after the second byte is written to ICDRT every time TDRE is set. 6. Write the number of bytes to be transmitted to ICDRT. Wait until TEND is set (the end of last byte data transmission) while TDRE is 1, or wait for NACK (NACKF in ICSR = 1) from the receive device while ACKE in ICIER is 1. Then, issue the stop condition to clear TEND or NACKF. 7. When the STOP bit in ICSR is set to 1, the operation returns to the slave receive mode.
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Section 14 I C Bus Interface 2 (IIC2)
2
SCL (Master output) SDA (Master output)
1 Bit 7
2 Bit 6
3 Bit 5
4 Bit 4
5 Bit 3
6 Bit 2
7 Bit 1
8 Bit 0 R/W
9
1 Bit 7
2 Bit 6
Slave address SDA (Slave output) TDRE
A
TEND
ICDRT
Address + R/W
Data 1
Data 2
ICDRS
Address + R/W
Data 1
User processing
[2] Instruction of start condition issuance
[4] Write data to ICDRT (second byte) [3] Write data to ICDRT (first byte) [5] Write data to ICDRT (third byte)
Figure 14.5 Master Transmit Mode Operation Timing (1)
SCL (Master output) SDA (Master output) SDA (Slave output) TDRE A
9
1 Bit 7
2 Bit 6
3 Bit 5
4 Bit 4
5 Bit 3
6 Bit 2
7 Bit 1
8 Bit 0
9
A/A
TEND
ICDRT
Data n
ICDRS
Data n
User [5] Write data to ICDRT processing
[6] Issue stop condition. Clear TEND. [7] Set slave receive mode
Figure 14.6 Master Transmit Mode Operation Timing (2)
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Section 14 I C Bus Interface 2 (IIC2)
2
14.4.3
Master Receive Operation
In master receive mode, the master device outputs the receive clock, receives data from the slave device, and returns an acknowledge signal. For master receive mode operation timing, see figures 14.7 and 14.8. The reception procedure and operations in master receive mode are shown below. 1. Clear the TEND bit in ICSR to 0, then clear the TRS bit in ICCR1 to 0 to switch from master transmit mode to master receive mode. Then, clear the TDRE bit to 0. 2. When ICDRR is read (dummy data read), reception is started, and the receive clock is output, and data received, in synchronization with the internal clock. The master device outputs the level specified by ACKBT in ICIER to SDA, at the 9th receive clock pulse. 3. After the reception of first frame data is completed, the RDRF bit in ICST is set to 1 at the rise of 9th receive clock pulse. At this time, the receive data is read by reading ICDRR, and RDRF is cleared to 0. 4. The continuous reception is performed by reading ICDRR every time RDRF is set. If, while RDRF is set to 1, the reading of ICDRR is delayed by other processing and does not occur by the falling edge of the 8th clock pulse, set RCVD to 1 and perform one-byte data transfer. 5. If next frame is the last receive data, set the RCVD bit in ICCR1 to 1 before reading ICDRR. This enables the issuance of the stop condition after the next reception. 6. When the RDRF bit is set to 1 at rise of the 9th receive clock pulse, issue the stage condition. 7. When the STOP bit in ICSR is set to 1, read ICDRR. Then clear the RCVD bit to 0. 8. The operation returns to the slave receive mode.
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Section 14 I C Bus Interface 2 (IIC2)
2
Master transmit mode SCL (Master output) SDA (Master output) SDA (Slave output) TDRE A 9 1
Master receive mode 2 3 4 5 6 7 8 9 A 1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
TEND
TRS
RDRF
ICDRS
Data 1
ICDRR User processing
Data 1 [3] Read ICDRR [1] Clear TDRE after clearing TEND and TRS [2] Read ICDRR (dummy read)
Figure 14.7 Master Receive Mode Operation Timing (1)
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SCL (Master output) SDA (Master output) SDA (Slave output) RDRF
9 A
1
2
3
4
5
6
7
8
9 A/A
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RCVD
ICDRS
Data n-1
Data n
ICDRR User processing
Data n-1
Data n
[5] Read ICDRR after setting RCVD
[7] Read ICDRR, and clear RCVD
[6] Issue stop condition [8] Set slave receive mode
Figure 14.8 Master Receive Mode Operation Timing (2) 14.4.4 Slave Transmit Operation
In slave transmit mode, the slave device outputs the transmit data, while the master device outputs the receive clock and returns an acknowledge signal. For slave transmit mode operation timing, see figures 14.9 and 14.10. The transmission procedure and operations in slave transmit mode are described below. 1. Set the ICE bit in ICCR1 to 1. Set the MLS and WAIT bits in ICMR and the CKS3 to CKS0 bits in ICCR1 to 1. (Initial setting) Set the MST and TRS bits in ICCR1 to select slave receive mode, and wait until the slave address matches. 2. When the slave address matches in the first frame following detection of the start condition, the slave device outputs the level specified by ACKBT in ICIER to SDA, at the rise of the 9th clock pulse. At this time, if the 8th bit data (R/W) is 1, the TRS and ICSR bits in ICCR1 are set to 1, and the mode changes to slave transmit mode automatically. The continuous transmission is performed by writing transmit data to ICDRT every time TDRE is set. 3. If TDRE is set after writing last transmit data to ICDRT, wait until TEND in ICSR is set to 1, with TDRE = 1. When TEND is set, clear TEND. 4. Clear TRS for the end processing, and read ICDRR (dummy read). SCL is free. 5. Clear TDRE.
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Slave receive mode SCL (Master output) SDA (Master output) SCL (Slave output) SDA (Slave output) TDRE 9
Slave transmit mode 1 2 3 4 5 6 7 8 9 A 1
A
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
TEND
TRS
ICDRT
Data 1
Data 2
Data 3
ICDRS
Data 1
Data 2
ICDRR User processing [2] Write data to ICDRT (data 1) [2] Write data to ICDRT (data 2) [2] Write data to ICDRT (data 3)
Figure 14.9 Slave Transmit Mode Operation Timing (1)
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Slave receive mode Slave transmit mode SCL (Master output) SDA (Master output) SCL (Slave output) SDA (Slave output)
TDRE 9 A 1 2 3 4 5 6 7 8 9
A
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TEND TRS
ICDRT
ICDRS
Data n
ICDRR
User processing
[3] Clear TEND
[4] Read ICDRR (dummy read) after clearing TRS
[5] Clear TDRE
Figure 14.10 Slave Transmit Mode Operation Timing (2) 14.4.5 Slave Receive Operation
In slave receive mode, the master device outputs the transmit clock and transmit data, and the slave device returns an acknowledge signal. For slave receive mode operation timing, see figures 14.11 and 14.12. Since a flag may be set according to the port state, initialization should be performed after all bits in ICSR have been cleared. The reception procedure and operations in slave receive mode are described below. 1. Set the ICE bit in ICCR1 to 1. Set the MLS and WAIT bits in ICMR and the CKS3 to CKS0 bits in ICCR1 to 1. (Initial setting) Set the MST and TRS bits in ICCR1 to select slave receive mode, and wait until the slave address matches. 2. When the slave address matches in the first frame following detection of the start condition, the slave device outputs the level specified by ACKBT in ICIER to SDA, at the rise of the 9th
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clock pulse. At the same time, RDRF in ICSR is set to read ICDRR (dummy read). (Since the read data show the slave address and R/W, it is not used.) 3. Read ICDRR every time RDRF is set. If 8th receive clock pulse falls while RDRF is 1, SCL is fixed low until ICDRR is read. The change of the acknowledge before reading ICDRR, to be returned to the master device, is reflected to the next transmit frame. 4. The last byte data is read by reading ICDRR.
SCL (Master output) SDA (Master output) SCL (Slave output) SDA (Slave output)
9
1
2
3
4
5
6
7
8
9
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
A
A
RDRF
ICDRS
Data 1
Data 2
ICDRR
User processing
Data 1
[2] Read ICDRR (dummy read)
[2] Read ICDRR
Figure 14.11 Slave Receive Mode Operation Timing (1)
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Section 14 I C Bus Interface 2 (IIC2)
2
SCL (Master output) SDA (Master output) SCL (Slave output) SDA (Slave output)
9
1
Bit 7
2
Bit 6
3
Bit 5
4
Bit 4
5
Bit 3
6
Bit 2
7
Bit 1
8
Bit 0
9
A
A
RDRF
ICDRS
Data 1
Data 2
ICDRR
User processing
Data 1
[3] Set ACKBT
[3] Read ICDRR [4] Read ICDRR
Figure 14.12 Slave Receive Mode Operation Timing (2) 14.4.6 Clocked Synchronous Serial Format
This module can be operated with the clocked synchronous serial format, by setting the FS bit in SAR to 1. When the MST bit in ICCR1 is 1, the transfer clock output from SCL is selected. When MST is 0, the external clock input is selected. Data Transfer Format: Figure 14.13 shows the clocked synchronous serial transfer format. The transfer data is output from the rise to the fall of the SCL clock, and the data at the rising edge of the SCL clock is guaranteed. The MLS bit in ICMR sets the order of data transfer, in either the MSB first or LSB first. The output level of SDA can be changed during the transfer wait, by the SDAO bit in ICCR2.
SCL
SDA
Bit 0
Bit 1
Bit 2 Bit 3 Bit 4
Bit 5 Bit 6
Bit 7
Figure 14.13 Clocked Synchronous Serial Transfer Format Transmit Operation: In transmit mode, transmit data is output from SDA, in synchronization with the fall of the transfer clock. The transfer clock is output when MST in ICCR1 is 1, and is
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Section 14 I C Bus Interface 2 (IIC2)
2
input when MST is 0. For transmit mode operation timing, see figure 14.14. The transmission procedure and operations in transmit mode are described below. 1. Set the ICE bit in ICCR1 to 1. Set the MST and CKS3 to CKS0 bits in ICCR1 to 1. (Initial setting) 2. Set the TRS bit in ICCR1 to select the transmit mode. Then, TDRE in ICSR is set. 3. Confirm that TDRE has been set. Then, write the transmit data to ICDRT. The data is transferred from ICDRT to ICDRS, and TDRE is set automatically. The continuous transmission is performed by writing data to ICDRT every time TDRE is set. When changing from transmit mode to receive mode, clear TRS while TDRE is 1.
SCL SDA (Output) TRS TDRE ICDRT ICDRS
1
2
7 Bit 6
8 Bit 7
1 Bit 0
7 Bit 6
8 Bit 7
1 Bit 0
Bit 0
Bit 1
Data 1 Data 1
Data 2 Data 2
Data 3 Data 3
User processing
[3] Write data [3] Write data to ICDRT to ICDRT [2] Set TRS
[3] Write data to ICDRT
[3] Write data to ICDRT
Figure 14.14 Transmit Mode Operation Timing Receive Operation: In receive mode, data is latched at the rise of the transfer clock. The transfer clock is output when MST in ICCR1 is 1, and is input when MST is 0. For receive mode operation timing, see figure 14.15. The reception procedure and operations in receive mode are described below. 1. Set the ICE bit in ICCR1 to 1. Set the MST and CKS3 to CKS0 bits in ICCR1 to 1. (Initial setting) 2. When the transfer clock is output, set MST to 1 to start outputting the receive clock. 3. When the receive operation is completed, data is transferred from ICDRS to ICDRR and RDRF in ICSR is set. When MST = 1, the next byte can be received, so the clock is continually output. The continuous reception is performed by reading ICDRR every time
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Section 14 I C Bus Interface 2 (IIC2)
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RDRF is set. When the 8th clock is risen while RDRF is 1, the overrun is detected and AL/OVE in ICSR is set. At this time, the previous reception data is retained in ICDRR. 4. To stop receiving when MST = 1, set RCVD in ICCR1 to 1, then read ICDRR. Then, SCL is fixed high after receiving the next byte data.
SCL SDA (Input) MST TRS
1
2
7 Bit 6
8 Bit 7
1 Bit 0
7 Bit 6
8 Bit 7
1 Bit 0
2 Bit 1
Bit 0
Bit 1
RDRF ICDRS ICDRR Data 1 Data 2 Data 3
Data 1 [2] Set MST (when outputting the clock)
Data 2
User processing
[3] Read ICDRR
[3] Read ICDRR
Figure 14.15 Receive Mode Operation Timing 14.4.7 Noise Canceler
The logic levels at the SCL and SDA pins are routed through noise cancelers before being latched internally. Figure 14.16 shows a block diagram of the noise canceler circuit. The noise canceler consists of two cascaded latches and a match detector. The SCL (or SDA) input signal is sampled on the system clock, but is not passed forward to the next circuit unless the outputs of both latches agree. If they do not agree, the previous value is held.
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Section 14 I C Bus Interface 2 (IIC2)
2
Sampling clock
C SCL or SDA input signal D Latch Q D
C Q Latch March detector Internal SCL or SDA signal
System clock period Sampling clock
Figure 14.16 Block Diagram of Noise Canceler 14.4.8 Example of Use
Flowcharts in respective modes that use the I2C bus interface are shown in figures 14.17 to 14.20.
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Section 14 I C Bus Interface 2 (IIC2)
2
Start Initialize Read BBSY in ICCR2 No [1] BBSY=0 ? Yes Set MST and TRS in ICCR1 to 1. Write 1 to BBSY and 0 to SCP. Write transmit data in ICDRT Read TEND in ICSR No [5] TEND=1 ? Yes Read ACKBR in ICIER [6] ACKBR=0 ? Yes Transmit mode? Yes No Mater receive mode [12] Clear the STOP flag. [13] Issue the stop condition. [8] TDRE=1 ? Yes No Last byte? [9] Yes Write transmit data in ICDRT Read TEND in ICSR No [10] TEND=1 ? Yes Clear TEND in ICSR Clear STOP in ICSR Write 0 to BBSY and SCP Read STOP in ICSR No [14] STOP=1 ? Yes Set MST to 1 and TRS to 0 in ICCR1 Clear TDRE in ICSR End [11] [12] [13] [14] Wait for the creation of stop condition. [15] Set slave receive mode. Clear TDRE. No [11] Clear the TEND flag. [8] [9] Wait for ICDRT empty. Set the last byte of transmit data. [3] [2] [3] [4] [4] [5] [6] [7] Issue the start condition. Set the first byte (slave address + R/W) of transmit data. Wait for 1 byte to be transmitted. Test the acknowledge transferred from the specified slave device. Set the second and subsequent bytes (except for the final byte) of transmit data. [1] [2] Test the status of the SCL and SDA lines. Set master transmit mode.
[10] Wait for last byte to be transmitted.
Write transmit data in ICDRT Read TDRE in ICSR No
[7]
[15]
Figure 14.17 Sample Flowchart for Master Transmit Mode
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Section 14 I C Bus Interface 2 (IIC2)
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Mater receive mode [1] Clear TEND in ICSR Clear TRS in ICCR1 to 0 Clear TDRE in ICSR Clear ACKBT in ICIER to 0 Dummy-read ICDRR Read RDRF in ICSR No RDRF=1 ? Yes Last receive - 1? No Read ICDRR Yes
[5] [4] [2]
Clear TEND, select master receive mode, and then clear TDRE.* Set acknowledge to the transmit device.* Dummy-read ICDDR.* Wait for 1 byte to be received Check whether it is the (last receive - 1). Read the receive data last. Set acknowledge of the final byte. Disable continuous reception (RCVD = 1). Read the (final byte - 1) of receive data. Wait for the last byte to be receive.
[2]
[1]
[3] [4] [5] [6] [7] [8] [9]
[3]
[10] Clear the STOP flag.
[6]
[11] Issue the stop condition. [12] Wait for the creation of stop condition. Set ACKBT in ICIER to 1
[7]
[13] Read the last byte of receive data. [14] Clear RCVD.
Set RCVD in ICCR1 to 1 Read ICDRR Read RDRF in ICSR No RDRF=1 ? Yes Clear STOP in ICSR. Write 0 to BBSY and SCP Read STOP in ICSR No
[12] [10] [9] [8]
[15] Set slave receive mode.
[11]
STOP=1 ? Yes Read ICDRR
[13] [14]
Clear RCVD in ICCR1 to 0
Notes: When receiving one byte, execute step [7] after step [1] without executing steps [2] to [6]. The step [8] is ICDRR dummy read. * Do not activate an interrupt during the execution of steps [1] to [3].
Clear MST in ICCR1 to 0 End
[15]
Figure 14.18 Sample Flowchart for Master Receive Mode
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Section 14 I C Bus Interface 2 (IIC2)
2
Slave transmit mode Clear AAS in ICSR Write transmit data in ICDRT Read TDRE in ICSR No [3] TDRE=1 ? Yes No
Last byte?
[1] Clear the AAS flag. [1] [2] Set transmit data for ICDRT (except for the last data). [3] Wait for ICDRT empty. [2] [4] Set the last byte of transmit data. [5] Wait for the last byte to be transmitted. [6] Clear the TEND flag . [7] Set slave receive mode. [8] Dummy-read ICDRR to release the SCL line. [4] [9] Clear the TDRE flag.
Yes Write transmit data in ICDRT Read TEND in ICSR No
[5] TEND=1 ? Yes Clear TEND in ICSR Clear TRS in ICCR1 to 0 Dummy read ICDRR Clear TDRE in ICSR End
[6] [7] [8] [9]
Figure 14.19 Sample Flowchart for Slave Transmit Mode
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Section 14 I C Bus Interface 2 (IIC2)
2
Slave receive mode
[1] Clear the AAS flag.
Clear AAS in ICSR Clear ACKBT in ICIER to 0 Dummy-read ICDRR
[1] [2] Set acknowledge to the transmit device. [2] [3] Dummy-read ICDRR. [3] [4] Wait for 1 byte to be received. [5] Check whether it is the (last receive - 1). [4] [6] Read the receive data. [7] Set acknowledge of the last byte.
Read RDRF in ICSR No RDRF=1 ? Yes
Last receive - 1?
Yes
[5]
[8] Read the (last byte - 1) of receive data. [9] Wait the last byte to be received.
No Read ICDRR
[6] [10] Read for the last byte of receive data.
Set ACKBT in ICIER to 1
[7]
Read ICDRR Read RDRF in ICSR No
[8]
[9]
RDRF=1 ? Yes Read ICDRR End
[10] Note: When receiving one byte, execute step [7] after step [1] without executing
executing steps [2] to [6]. The step [8] is ICDRR dummy read.
Figure 14.20 Sample Flowchart for Slave Receive Mode
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Section 14 I C Bus Interface 2 (IIC2)
2
14.5
Interrupt Request
There are six interrupt requests in this module; transmit data empty, transmit end, receive data full, NACK receive, STOP recognition, and arbitration lost/overrun error. Table 14.3 shows the contents of each interrupt request. Table 14.3 Interrupt Requests
Clocked Synchronous 2 I C Mode Mode O
Interrupt Request Transmit data empty Transmit end Receive data full STOP recognition NACK receive Arbitration lost/overrun Error
Abbreviation TXI TEI RXI STPI NAKI
Interrupt Condition (TDRE=1) * (TIE=1) (TEND=1) * (TEIE=1) (RDRF=1) * (RIE=1) (STOP=1) * (STIE=1) {(NACKF=1)+(AL=1)} * (NAKIE=1)
X X
When interrupt conditions described in table 14.3 are 1 and the I bit in CCR is 0, the CPU executes an interrupt exception processing. Interrupt sources should be cleared in the exception processing. TDRE and TEND are automatically cleared to 0 by writing the transmit data to ICDRT. RDRF are automatically cleared to 0 by reading ICDRR. TDRE is set to 1 again at the same time when transmit data is written to ICDRT. When TDRE is cleared to 0, then an excessive data of one byte may be transmitted.
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Section 14 I C Bus Interface 2 (IIC2)
2
14.6
Bit Synchronous Circuit
In master mode, this module has a possibility that high level period may be short in the two states described below. * When SCL is driven to low by the slave device * When the rising speed of SCL is lowered by the load of the SCL line (load capacitance or pullup resistance) Therefore, it monitors SCL and communicates by bit with synchronization. Figure 14.21 shows the timing of the bit synchronous circuit and table 14.4 shows the time when SCL output changes from low to Hi-Z then SCL is monitored.
SCL monitor timing reference clock
SCL
VIH
Internal SCL
Figure 14.21 The Timing of the Bit Synchronous Circuit Table 14.4 Time for Monitoring SCL
CKS3 0 CKS2 0 1 1 0 1 Time for Monitoring SCL 7.5 tcyc 19.5 tcyc 14.5 tcyc 41.5 tcyc
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Section 14 I C Bus Interface 2 (IIC2)
2
14.7
14.7.1
Note on Usage
Setting Module Stop Mode
The IIC2 is enabled or disabled by setting the module stop control register. In the initial state, the IIC2 is disabled. After the module stop mode is canceled, registers can be accessed. For details, see section 22, Power-Down Modes. 14.7.2 Issuance of Stop and Repeated Start Conditions
Confirm the ninth falling edge of the clock before issuing a stop or a repeated start condition. The ninth falling edge can be confirmed by monitoring the SCLO bit in the I2C bus control register 2 (ICCR2). If a stop or a repeated start condition is issued at a certain timing in either of the following cases, the stop or repeated start condition may be issued incorrectly. * The rising time of the SCL signal exceeds the time given in section 14.6, Bit Synchronous Circuit, because of the load on the SCL bus. * The bit synchronous circuit is activated because a slave device holds the SCL bus low during the eighth clock. 14.7.3 WAIT Bit in I2C Bus Mode Register (ICMR)
The WAIT bit in the I2C bus mode register (ICMR) must be held 0. If the WAIT bit is set to 1, when a slave device holds the SCL signal low more than one transfer clock cycle during the eights clock, the high level period of the ninth clock may be shorter than a given period.
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Section 14 I C Bus Interface 2 (IIC2)
2
14.7.4
Usage Note on Master Receive Mode
In master receive mode, when SCL is fixed low on the falling edge of the 8th clock while the RDRF bit is set to 1 and ICDRR is read around the falling edge of the 8th clock, the clock is only fixed low in the 8th clock of the next round of data reception. The SCL is then released from its fixed state without reading ICDRR and the 9th clock is output. As a result, some receive data is lost. Ways to avoid this phenomenon are listed below. * Read ICDRR in master receive mode before the rising edge of the 8th clock. * Set RCVD to 1 in master receive mode and perform communication in units of one byte. 14.7.5 Restriction on Setting of Transfer Rate in Use of Multi-Master
In multi-master usage when the IIC transfer rate setting of this LSI is lower than those of the other masters, unexpected length of SCL may occasionally be output. To avoid this, the specified value must be greater than or equal to the value produced by multiplying the fastest transfer rate among the other masters by 1/1.8. For example, when the transfer rate of the fastest bus master among the other bus masters is 400 kbps, the transfer rate of the IIC of this LSI must be set to at least 223 kbps (= 400/1.8). 14.7.6 Restriction on Use of Bit Manipulation Instructions to Set MST and TRS when Multi-Master Is Used
When master transmission is selected by consecutively manipulating the MST and TRS bits in multi-master usage, an arbitration loss during execution of the bit-manipulation instruction for TRS leads to the contradictory situation where AL in ICSR is 1 in master transmit mode (MST = 1, TRS = 1). Ways to avoid this effect are listed below. * Use the MOV instruction to set MST and TRS in multi-master usage. * When arbitration is lost, confirm that MST = 0 and TRS = 0. If the setting of MST = 0 and TRS = 0 is not confirmed, set MST = 0 and TRS = 0 again.
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Section 15 A/D Converter
Section 15 A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter that allows up to 16 analog input channels to be selected. A block diagram of the A/D converter is shown in figure 15.1.
15.1
Features
* 10-bit resolution * 16 input channels * Conversion time: 13.3 s per channel (at 20-MHz operation), 10.1 s per channel (at 26-MHz operation) * Two operating modes Single mode: Single-channel A/D conversion Scan mode: Continuous A/D conversion on 1 to 4 channels * Four data registers Conversion results are held in a 16-bit data register for each channel * Sample and hold function * Three methods conversion start Software 16-bit timer pulse unit (TPU or TMR) conversion start trigger External trigger signal * Interrupt request An A/D conversion end interrupt request (ADI) can be generated * Module stop mode can be set * Selectable range of voltages of analog inputs The range of voltages of analog inputs to be converted can be specified using the Vref signal as the analog reference voltage.
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Section 15 A/D Converter
AVcc Module data bus 10-bit D/A converter Vref Internal data bus
Successive approximations register
ADDRC
ADDRD
ADDRA
ADDRB
ADCSR
AN0 AN1 AN2 AN3 AN4 AN5 AN6 AN7 AN8 AN9 AN10 AN11 AN12 AN13 AN14 AN15 ADTRG
ADCR
Bus interface
+
/2 /4
Comparator
Control circuit
/8 /16
Multiplexer
Sample-andhold circuit
ADI interrupt signal Conversion start trigger from TPU or 8-bit timer
Off while waiting for A/D conversion. On during A/D conversion. AVss Legend: ADCR: A/D control register ADCSR: A/D control/status register ADDRA: A/D data register A ADDRB: A/D data register B ADDRC: A/D data register C ADDRD: A/D data register D
Figure 15.1 Block Diagram of A/D Converter
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Section 15 A/D Converter
15.2
Input/Output Pins
Table 15.1 summarizes the input pins used by the A/D converter. The 16 analog input pins (AN0 to AN15) are divided into four groups each of which consists of two channels; analog input pins 0 to 7 (AN0 to AN7) comprising channel set 0, analog input pins 8 to 15 (AN8 to AN15) comprising channel set 1, analog input pins 0 to 3, 8 to 11 (AN0 to AN3, AN8 to AN11) comprising group 0, and analog input pins 4 to 7, 12 to 15 (AN4 to AN7, AN12 to AN15) comprising group 1. The AVcc and AVss pins are the power supply pins for the analog block in the A/D converter. The Vref pin is the A/D conversion reference voltage pin. Table 15.1 Pin Configuration
Pin Name Analog power supply pin Analog ground pin Reference voltage pin Analog input pin 0 Analog input pin 1 Analog input pin 2 Analog input pin 3 Analog input pin 4 Analog input pin 5 Analog input pin 6 Analog input pin 7 Analog input pin 8 Analog input pin 9 Analog input pin 10 Analog input pin 11 Analog input pin 12 Analog input pin 13 Analog input pin 14 Analog input pin 15 A/D external trigger input Symbol AVCC AVSS Vref AN0 AN1 AN2 AN3 AN4 AN5 AN6 AN7 AN8 AN9 AN10 AN11 AN12 AN13 AN14 AN15 ADTRG I/O Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input External trigger input pin for starting A/D conversion Channel set 1 (CH3 = 1), group 1 analog input pins Channel set 1 (CH3 = 1), group 0 analog input pins Channel set 0 (CH3 = 0), group 1 analog input pins Function Analog block power supply pin Analog block ground and reference voltage Reference voltage for A/D conversion Channel set 0 (CH3 = 0), group 0 analog input pins
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Section 15 A/D Converter
15.3
Register Descriptions
The A/D converter has the following registers. For details on the module stop control register, see section 22.1.2, Module Stop Control Registers A to C (MSTPCRA to MSTPCRC). * * * * * * A/D data register A (ADDRA) A/D data register B (ADDRB) A/D data register C (ADDRC) A/D data register D (ADDRD) A/D control/status register (ADCSR) A/D control register (ADCR) A/D Data Registers A to D (ADDRA to ADDRD)
15.3.1
There are four 16-bit read-only ADDR registers; ADDRA to ADDRD, used to store the results of A/D conversion. The ADDR registers, which store a conversion result for each analog input channel, are shown in table 15.2. The converted 10-bit data is stored in bits 6 to 15. The lower 6 bits are always read as 0. The data bus between the CPU and the A/D converter is 8 bits wide. The upper byte can be read directly from the CPU, however the lower byte should be read via a temporary register. Therefore, when reading ADDR, read only the upper byte, or read in word unit. Table 15.2 Analog Input Channels and Corresponding ADDR Registers
Analog Input Channel Channel Set 0 (CH3 = 0) Group 0 (CH2 = 0) AN0 AN1 AN2 AN3 Group 1 (CH2 = 1) AN4 AN5 AN6 AN7 Channel Set 1 (CH3 = 1) Group 0 (CH2 = 0) AN8 AN9 AN10 AN11 Group 1 (CH2 = 1) AN12 AN13 AN14 AN15 A/D Data Register to be Stored Results of A/D Conversion ADDRA ADDRB ADDRC ADDRD
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Section 15 A/D Converter
15.3.2
A/D Control/Status Register (ADCSR)
ADCSR controls A/D conversion operations.
Bit 7 Bit Name ADF Initial Value 0 R/W Description
R/(W)* A/D End Flag A status flag that indicates the end of A/D conversion. [Setting conditions] * * When A/D conversion ends in single mode When A/D conversion ends on all specified channels in scan mode When 0 is written after reading ADF = 1 When the DTC is activated by an ADI interrupt, and the DISEL bit in DTC is 0 with the transfer counter other than 0
[Clearing conditions] * *
6
ADIE
0
R/W
A/D Interrupt Enable A/D conversion end interrupt (ADI) request enabled when 1 is set
5
ADST
0
R/W
A/D Start Clearing this bit to 0 stops A/D conversion, and the A/D converter enters the wait state. Setting this bit to 1 starts A/D conversion. In single mode, this bit is cleared to 0 automatically when conversion on the specified channel is complete. In scan mode, conversion continues sequentially on the specified channels until this bit is cleared to 0 by software, a reset, or a transition to software standby mode, hardware standby mode, or module stop mode. The ADST bit can be set to 1 by software, a timer conversion start trigger, or the A/D external trigger input pin (ADTRG).
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Section 15 A/D Converter
Bit 4
Bit Name SCAN
Initial Value 0
R/W R/W
Description Scan Mode Selects single mode or scan mode as the A/D conversion operating mode. Only set the SCAN bit while conversion is stopped (ADST = 0). 0: Single mode 1: Scan mode
3
CH3
0
R/W
Channel Select 3 Switches the analog channel allocated to group 0 and group 1. Group 0 0: Channel set 0 AN0 to AN3 1: Channel set 1 AN 8 to AN11 Group 1 AN4 to AN7 AN12 to AN15
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Section 15 A/D Converter
Bit 2 1 0
Bit Name CH2 CH1 CH0
Initial Value 0 0 0
R/W R/W R/W R/W
Description Channel Select 0 to 2 Select analog input channels. When SCAN = 0 Channel set 0 (CH3 = 0) 000: AN0 001: AN1 010: AN2 011: AN3 100: AN4 101: AN5 110: AN6 111: AN7 Channel set 1 (CH3 = 1) 000: AN8 001: AN9 010: AN10 011: AN11 100: AN12 101: AN13 110: AN14 111: AN15 000: AN8 001: AN8, AN9 010: AN8 to AN10 011: AN8 to AN11 100: AN12 101: AN12, AN13 110: AN12 to AN14 111: AN12 to AN15 000: AN0 001: AN0, AN1 010: AN0 to AN2 011: AN0 to AN3 100: AN4 101: AN4, AN5 110: AN4 to AN6 111: AN4 to AN7 When SCAN = 1
Note:
*
Only 0 can be written to clear this flag.
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Section 15 A/D Converter
15.3.3
A/D Control Register (ADCR)
ADCR enables A/D conversion started by an external trigger signal.
Bit 7 6 Bit Name TRGS1 TRGS0 Initial Value 0 0 R/W R/W R/W Description Timer Trigger Select 0 and 1 Enables the start of A/D conversion by a trigger signal. Only set bits TRGS0 and TRGS1 while conversion is stopped (ADST = 0). 00: A/D conversion start by software is enabled 01: A/D conversion start by TPU conversion start trigger is enabled 10: A/D conversion start by 8-bit timer conversion start trigger is enabled 11: A/D conversion start by external trigger pin (ADTRG) is enabled 5, 4 3 2 CKS1 CKS0 All 1 0 0 R/W R/W Reserved These bits are always read as 1 and cannot be modified. Clock Select 0 and 1 These bits specify the A/D conversion time. The conversion time should be changed only when the A/D conversion stops (ADST = 0). The conversion time setting should exceed the conversion time shown in section 24.5, A/D Converter Characteristics. 00: Conversion time = 530 states (max.) 01: Conversion time = 266 states (max.) 10: Conversion time = 134 states (max.) 11: Conversion time = 68 states (max.) 1, 0 All 1 Reserved These bits are always read as 1 and cannot be modified.
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Section 15 A/D Converter
15.4
Interface to Bus Master
ADDRA to ADDRD are 16-bit registers. As the data bus to the bus master is 8 bits wide, the bus master accesses to the upper byte of the registers directly while to the lower byte of the registers via the temporary register (TEMP). Data in ADDR is read in the following way: When the upper-byte data is read, the upper-byte data will be transferred to the CPU and the lower-byte data will be transferred to TEMP. Then, when the lower-byte data is read, the lower-byte data will be transferred to the CPU. When data in ADDR is read, the data should be read from the upper byte and lower byte in the order. When only the upper-byte data is read, the data is guaranteed. However, when only the lower-byte data is read, the data is not guaranteed. Figure 15.2 shows data flow when accessing to ADDR.
Read the upper byte
Bus master (H'AA)
Module data bus Bus interface
TEMP (H'40)
ADDRnH (H'AA) Read the lower byte
ADDRnL (H'40)
(n = A to D)
Bus master (H'40)
Module data bus Bus interface
TEMP (H'40)
ADDRnH (H'AA)
ADDRnL (H'40)
(n = A to D)
Figure 15.2 Access to ADDR (When Reading H'AA40)
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Section 15 A/D Converter
15.5
Operation
The A/D converter operates by successive approximation with 10-bit resolution. It has two operating modes; single mode and scan mode. When changing the operating mode or analog input channel, in order to prevent incorrect operation, first clear the bit ADST to 0 in ADCSR. The ADST bit can be set at the same time as the operating mode or analog input channel is changed. 15.5.1 Single Mode
In single mode, A/D conversion is to be performed only once on the specified single channel. The operations are as follows. 1. A/D conversion is started when the ADST bit is set to 1, according to software, timer conversion start trigger, or external trigger input. 2. When A/D conversion is completed, the result is transferred to the corresponding A/D data register to the channel. 3. On completion of conversion, the ADF bit in ADCSR is set to 1. If the ADIE bit is set to 1 at this time, an ADI interrupt request is generated. 4. The ADST bit remains set to 1 during A/D conversion. When A/D conversion ends, the ADST bit is automatically cleared to 0 and the A/D converter enters the wait state.
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Section 15 A/D Converter
Set*
ADIE ADST ADF State of channel 0 (AN0) A/D conversion starts Set* Clear* Set* Clear*
Idle Idle Idle Idle
A/D conversion 1
State of channel 1 (AN1) State of channel 2 (AN2) State of channel 3 (AN3) ADDRA
Idle
A/D conversion 2
Idle
Read conversion result* ADDRB ADDRC ADDRD Note: * Vertical arrows ( ) indicate instructions executed by software.
A/D conversion result 1
Read conversion result* A/D conversion result 2
Figure 15.3 A/D Conversion Timing (Single-Chip Mode, Channel 1 Selected) 15.5.2 Scan Mode
In scan mode, A/D conversion is to be performed sequentially on the specified channels (four channels maximum). The operations are as follows. 1. When the ADST bit is set to 1 by software, timer conversion start trigger, or external trigger input, A/D conversion starts on the first channel in the group (AN0 when CH3 = 0 and CH2 = 0, AN4 when CH3 = 0 and CH2 = 1, AN8 when CH3 = 1 and CH2 = 0, or AN12 when CH3 = 1 and CH2 = 1). 2. When A/D conversion for each channel is completed, the result is sequentially transferred to the A/D data register corresponding to each channel. 3. When conversion of all the selected channels is completed, the ADF flag is set to 1. If the ADIE bit is set to 1 at this time, an ADI interrupt is requested after A/D conversion ends. Conversion of the first channel in the group starts again. 4. Steps 2 to 3 are repeated as long as the ADST bit remains set to 1. When the ADST bit is cleared to 0, A/D conversion stops and the A/D converter enters the wait state. After that, when the ADST bit is set to 1, conversion of the first channel in the group starts again.
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Section 15 A/D Converter
Continuous A/D conversion execution Set*1
ADST Clear*1 Clear*1 A/D conversion time
ADF State of channel 0 (AN0) State of channel 1 (AN1) State of channel 2 (AN2) State of channel 3 (AN3) ADDRA ADDRB ADDRC ADDRD Idle Idle Idle
A/D conversion 1
Idle
A/D conversion 2
A/D conversion 4
Idle
A/D conversion 5*2
Idle
A/D conversion 3
Idle Idle
Idle Transfer A/D conversion result 1 A/D conversion result 4 A/D conversion result 2 A/D conversion result 3
Notes: 1. Vertical arrows ( ) indicate instructions executed by software. 2. Data currently being converted is ignored.
Figure 15.4 A/D Conversion Timing (Scan Mode, Channels AN0 to AN2 Selected) 15.5.3 Input Sampling and A/D Conversion Time
The A/D converter has a built-in sample-and-hold circuit. The A/D converter samples the analog input when the A/D conversion start delay time (tD) has passed after the ADST bit is set to 1, then starts conversion. Figure 15.5 shows the A/D conversion timing. Table 15.3 shows the A/D conversion time. As indicated in figure 15.5, the A/D conversion time (tCONV) includes tD and the input sampling time (tSPL). The length of tD varies depending on the timing of the write access to ADCSR. The total conversion time therefore varies within the ranges indicated in table 15.3. Specify the conversion time by setting bits CKS0 and CKS1 in ADCR with ADST cleared to 0. Note that the specified conversion time should be longer than the value described in section 24.5 A/D Conversion Characteristics. In scan mode, the values given in table 15.3 apply to the first conversion time. The values given in table 15.4 apply to the second and subsequent conversions.
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Section 15 A/D Converter
(1) Address (2)
Write signal Input sampling timing
ADF tD tSPL tCONV Legend: (1) : ADCSR write cycle (2) : ADCSR address : A/D conversion start delay tD tSPL : Input sampling time tCONV : A/D conversion time
Figure 15.5 A/D Conversion Timing Table 15.3 A/D Conversion Time (Single Mode)
CKS1 = 0 CKS0 = 0 Item A/D conversion start delay time Input sampling time A/D conversion time Symbol Min. Typ. Max. tD tSPL tCONV 18 CKS0 = 1 Min. Typ. Max. 10 CKS0 = 0 Min. Typ. Max. 6 CKS1 = 1 CKS0 = 1 Min. Typ. Max. 4
127
33
63
17
31
9
15
5
515
530
266
131
134
67
68
259
Note:
All values represent the number of states.
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Section 15 A/D Converter
Table 15.4 A/D Conversion Time (Scan Mode)
CKS1 0 CKS0 0 1 1 0 1 Conversion Time (State) 512 (Fixed) 256 (Fixed) 128 (Fixed) 64 (Fixed)
15.5.4
External Trigger Input Timing
A/D conversion can be externally triggered. When the TRGS0 and TRGS1 bits are set to 1 in ADCR, external trigger input is enabled at the ADTRG pin. A falling edge at the ADTRG pin sets the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single and scan modes, are the same as when the bit ADST has been set to 1 by software. Figure 15.6 shows the timing.
ADTRG
Internal trigger signal
ADST A/D conversion
Figure 15.6 External Trigger Input Timing
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Section 15 A/D Converter
15.6
Interrupt Source
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion. Setting the ADIE bit to 1 enables ADI interrupt requests while the ADF bit in ADCSR is set to 1 after A/D conversion is completed. The data transfer controller (DTC) can be activated by an ADI interrupt. Having the converted data read by the DTC in response to an ADI interrupt enables continuous conversion without imposing a load on software. Table 15.5 A/D Converter Interrupt Source
Name ADI Interrupt Source A/D conversion end Interrupt Flag ADF DTC Activation Possible
15.7
A/D Conversion Accuracy Definitions
This LSI's A/D conversion accuracy definitions are given below. * Resolution The number of A/D converter digital output codes * Quantization error The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 15.7). * Offset error The deviation of the analog input voltage value from the ideal A/D conversion characteristic when the digital output changes from the minimum voltage value B'0000000000 (H'000) to B'0000000001 (H'001) (see figure 15.8). * Full-scale error The deviation of the analog input voltage value from the ideal A/D conversion characteristic when the digital output changes from B'1111111110 (H'3FE) to B'1111111111 (H'3FF) (see figure 15.8). * Nonlinearity error The error with respect to the ideal A/D conversion characteristic between zero voltage and fullscale voltage. Does not include offset error, full-scale error, or quantization error (see figure 15.8). * Absolute accuracy The deviation between the digital value and the analog input value. Includes offset error, fullscale error, quantization error, and nonlinearity error.
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Section 15 A/D Converter
Digital output
111 110 101 100 011 010 001 000
Ideal A/D conversion characteristic
Quantization error
1 2 1024 1024
1022 1023 FS 1024 1024 Analog input voltage
Figure 15.7 A/D Conversion Accuracy Definitions
Full-scale error
Digital output
Ideal A/D conversion characteristic
Nonlinearity error Actual A/D conversion characteristic FS Analog input voltage
Offset error
Figure 15.8 A/D Conversion Accuracy Definitions
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Section 15 A/D Converter
15.8
15.8.1
Usage Notes
Module Stop Mode Setting
Operation of the A/D converter can be disabled or enabled using the module stop control register. The initial setting is for operation of the A/D converter to be halted. Register access is enabled by clearing module stop mode. For details, see section 22, Power-Down Modes. 15.8.2 Permissible Signal Source Impedance
This LSI's analog input is designed such that conversion accuracy is guaranteed for an input signal for which the signal source impedance is 5 k or less. This specification is provided to enable the A/D converter's sample-and-hold circuit input capacitance to be charged within the sampling time; if the sensor output impedance exceeds 5 k, charging may be insufficient and it may not be possible to guarantee A/D conversion accuracy. However, for A/D conversion in single mode with a large capacitance provided externally, the input load will essentially comprise only the internal input resistance of 10 k, and the signal source impedance is ignored. However, as a low-pass filter effect is obtained in this case, it may not be possible to follow an analog signal with a large differential coefficient (e.g., 5 mV/s or greater) (see figure 15.9). When converting a high-speed analog signal, a low-impedance buffer should be inserted. 15.8.3 Influences on Absolute Accuracy
Adding capacitance results in coupling with GND, and therefore noise in GND may adversely affect absolute accuracy. Be sure to make the connection to an electrically stable GND such as AVss. Care is also required to insure that filter circuits do not communicate with digital signals on the mounting board (i.e., acting as antennas).
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Section 15 A/D Converter
This LSI Sensor input impedance to 5 k Sensor input Low-pass filter C to 0.1 F
Cin = 15 pF
A/D converter equivalent circuit 10 k
20 pF
Figure 15.9 Example of Analog Input Circuit 15.8.4 Range of Analog Power Supply and Other Pin Settings
If the conditions below are not met, the reliability of the device may be adversely affected. * Analog input voltage range The voltage applied to analog input pin ANn during A/D conversion should be in the range AVss ANn AVcc. * Relationship between AVcc, AVss and Vcc, Vss Set AVss = Vss as the relationship between AVcc, AVss and Vcc, Vss. If the A/D converter is not used, the AVcc and AVss pins must not be left open. * Vref range The reference voltage input from the Vref pin should be set to AVcc or less. 15.8.5 Notes on Board Design
In board design, digital circuitry and analog circuitry should be as mutually isolated as possible, and layout in which digital circuit signal lines and analog circuit signal lines cross or are in close proximity should be avoided as far as possible. Failure to do so may result in incorrect operation of the analog circuitry due to inductance, adversely affecting A/D conversion values. Also, digital circuitry must be isolated from the analog input signals (AN0 to AN15), and analog power supply (AVcc) by the analog ground (AVss). Also, the analog ground (AVss) should be connected at one point to a stable digital ground (Vss) on the board. 15.8.6 Notes on Noise Countermeasures
A protection circuit should be connected in order to prevent damage due to abnormal voltage, such as an excessive surge at the analog input pins (AN0 to AN15), between AVcc and AVss, as shown
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Section 15 A/D Converter
in figure 15.10. Also, the bypass capacitors connected to AVcc and the filter capacitor connected to AN0 to AN15 must be connected to AVss. If a filter capacitor is connected, the input currents at the analog input pins (AN0 to AN15) are averaged, and so an error may arise. Also, when A/D conversion is performed frequently, as in scan mode, if the current charged and discharged by the capacitance of the sample-and-hold circuit in the A/D converter exceeds the current input via the input impedance (Rin), an error will arise in the analog input pin voltage. Careful consideration is therefore required when deciding circuit constants.
AVCC Vref
Rin *2
*1 *1
100 AN0 to AN15 0.1 F AVSS
Notes: Values are reference values.
1.
10 F 0.01 F
2 Rin: Input Impedance
Figure 15.10 Example of Analog Input Protection Circuit Table 15.6 Analog Pin Specifications
Item Analog input capacitance Permissible signal source impedance Min. Max. 20 5 Unit pF k
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Section 15 A/D Converter
10 k AN0 to AN15 20 pF To A/D converter
Note: Values are reference values.
Figure 15.11 Analog Input Pin Equivalent Circuit
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Section 16 D/A Converter
Section 16 D/A Converter
16.1
* * * * *
Features
8-bit resolution Two output channels Conversion time: 10 s, maximum (when load capacitance is 20 pF) Output voltage: 0 V to Vref Module stop mode can be set
Module data bus Bus interface Vref AVCC DADR0 DADR1 DA1 DA0 AVSS 8-bit D/A DACR Control circuit Legend: DACR : D/A control register DADR0: D/A data register 0 DADR1: D/A data register 1
Internal data bus
Figure 16.1 Block Diagram of D/A Converter
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Section 16 D/A Converter
16.2
Input/Output Pins
Table 16.1 shows the pin configuration for the D/A converter. Table 16.1 Pin Configuration
Pin Name Analog power supply pin Analog ground pin Analog output pin 0 Analog output pin 1 Reference voltage pin Symbol AVCC AVSS DA0 DA1 Vref I/O Input Input Output Output Input Function Analog block power supply Analog block ground and reference voltage Channel 0 analog output pin Channel 1 analog output pin Analog block reference voltage
16.3
Register Descriptions
The D/A converter has the following registers. For details on the module stop control register, see section 22.1.2, Module Stop Control Registers A to C (MSTPCRA to MSTPCRC). * D/A data register 0 (DADR0) * D/A data register 1 (DADR1) * D/A control register (DACR) 16.3.1 D/A Data Registers 0, 1 (DADR0, DADR1)
DADR0 and DADR1 are 8-bit readable/writable registers that store data for D/A conversion. When analog output is permitted, D/A data register contents are converted and output to analog output pins.
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Section 16 D/A Converter
16.3.2
D/A Control Register (DACR)
DACR controls D/A converter operation.
Bit 7 Bit Name DAOE1 Initial Value 0 R/W R/W Description D/A Output Enable 1 Controls D/A conversion and analog output 0: Analog output DA1 is disabled 1: D/A conversion for channel 1 and analog output DA1 are enabled 6 DAOE0 0 R/W D/A Output Enable 0 Controls D/A conversion and analog output 0: Analog output DA0 is disabled 1: D/A conversion for channel 0 and analog output DA0 are enabled 5 DAE 0 R/W D/A Enable Controls D/A conversion in conjunction with the DAOE0 and DAOE1 bits. When the DAE bit is cleared to 0, D/A conversion for channels 0 and 1 are controlled individually. When DAE is set to 1, D/A conversion for channels 0 and 1 are controlled as one. Conversion result output is controlled by the DAOE0 and DAOE1 bits. For details, see table 16.2. 4 to 0 All 1 Reserved These bits are always read as 1 and cannot be modified.
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Section 16 D/A Converter
Table 16.2 D/A Conversion Control
Bit 5 DAE 0 Bit 7 DAOE1 0 Bit 6 DAOE0 0 1 1 0 1 1 0 0 1 1 0 1 Description Disables D/A Conversion Enables D/A Conversion for channel 0 Enables D/A Conversion for channel 1 Enables D/A Conversion for channels 0 and 1 Disables D/A Conversion Enables D/A Conversion for channels 0 and 1
16.4
Operation
Two channels of the D/A converter can perform conversion individually. When the DAOE bit in DACR is set to 1, D/A conversion is enabled and the conversion results are output. An example of D/A conversion of channel 0 is shown below. The operation timing is shown in figure 16.2. 1. Write conversion data to DADR0. 2. When the DAOE0 bit in DACR is set to 1, D/A conversion starts. After the interval of tDCONV, the conversion results are output from the analog output pin DA0. The conversion results are output continuously until DADR0 is modified or DAOE0 bit is cleared to 0. The output value is calculated by the following formula: (DADR contents)/256 x Vref 3. Conversion starts immediately after DADR0 is modified. After the interval of tDCONV, conversion results are output. 4. When the DAOE bit is cleared to 0, analog output is disabled.
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Section 16 D/A Converter
DADR0 write cycle
DACR write cycle
DADR0 write cycle
DACR write cycle
ADRES
DADR0
Conversion data (1)
Conversion data (2)
DAOE0 Conversion result (2)
DA0 High impedance state tDCONV
Conversion result (1) tDCONV
Legend: tDCONV: D/A conversion time
Figure 16.2 D/A Converter Operation Example
16.5
16.5.1
Usage Notes
Analog Power Supply Current in Power-Down Mode
If this LSI enters a power-down mode such as software standby, watch, and module stop modes while D/A conversion is enabled, the D/A cannot retain analog outputs within the given D/A absolute accuracy although it retains digital values. The analog power supply current is approximately the same as that during D/A conversion. To reduce analog power supply current in power-down mode, clear the DAOE0, DAOE1 and DAE bits to 0 to disable D/A outputs before entering the mode. 16.5.2 Setting for Module Stop Mode
It is possible to enable/disable the D/A converter operation using the module stop control register, the D/A converter does not operate by the initial value of the register. The register can be accessed by releasing the module stop mode. For more details, see section 22, Power-Down Modes.
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Section 16 D/A Converter
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
This LSI has an on-chip one-channel IEBus controller (IEB). The Inter Equipment BusTM (IEBusTM)*1 is a small-scaled digital data transfer system for inter equipment data transfer. This LSI does not have an on-chip IEBus driver/receiver, so it is necessary to mount a dedicated driver/receiver*2 externally. Notes: 1. IEBus is a trademark of NEC Electronics Corporation. 2. Bus interface driver/receiver IC: HA12187FP is recommended.
17.1
Features
* IEBus protocol control (layer 2) supported Half duplex asynchronous communications Multi-master system Broadcast communications function Selectable mode (three types) with different transfer speeds * Data transfer by the data transfer controller (DTC) Transfer buffer: 1 byte Reception buffer: 1 byte Up to 128 bytes of consecutive transfer/reception (maximum number of transfer bytes in mode 2) * Operating frequency 12 MHz, 12.58 MHz (IEB uses 1/2 divided external clock.) 18 MHz, 18.87 MHz (IEB uses 1/3 divided external clock.) 24 MHz, 25.16 MHz (IEB uses 1/4 divided external clock.) Note: When selected communications mode 0 or mode 1 ( 1.5 %) When selected communications mode 2 ( 0.5 %) * Noise resistance is improved by mounting the IEBus driver/receiver (layer 1) externally. * Module stop mode can be set.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Figure 17.1 shows an IEB block diagram.
Tx Signal polarity select circuit Rx Bit timing set/ detect circuit
Conflict detect circuit
Parity generation circuit
Parity check circuit
Transmission block
IEBus driver/receiver
Transmit shift register IEAR1 IESA1 IEAR2 IESA2 IEMCR IETBFL IETBR
Reception block
Receive shift register
IEMA1
IEMA2 IERCTL
IERBR IELA1 IELA2
Data link layer control block
IECMR IECTR
Status/interrupt control block IETXI (TxRDY interrupt) IETSI (Tx status interrupt) IETSR IEIET IETEF IERXI (RxRDY interrupt) IERSI (Rx status interrupt) IERSR IEIER IEREF
Figure 17.1 Block Diagram of IEB
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Internal data bus
IERBFL
Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.1.1
IEBus Communications Protocol
The overview of the IEBus is described below. * Communications method: Half duplex asynchronous communications * Multi-master system All units connected to the IEBus can transfer data to other units. * Broadcast communications function (one-to-many communications) Group broadcast communications: Broadcast communications to group unit General broadcast communications: Broadcast communications to all units * Mode is selectable (three modes with different transfer speeds). Table 17.1 Mode Types
Mode 0 1 2 = 12, 18, 24 MHz About 3.9 kbps About 17 kbps About 26 kbps = 12.58, 18.87, 25.16 MHz About 4.1 kbps About 18 kbps About 27 kbps Maximum Number Of Transfer Bytes (byte/frame) 16 32 128
* Access control: CSMA/CD (Carrier Sense Multiple Access with Collision Detection) Priority of bus mastership is as follows. Broadcast communications (one-to-many communications) have priority rather than normal communications (one-to-one communications). Smaller master address has priority. * Communications scale Number of units: Up to 50 Cable length: Up to 150 m (when using a twisted pair cable) Note: The communications scale of the actual system depends on the externally mounted IEBus driver/receiver characteristics and the characteristics of the cable to be used. (1) Determination of Bus Mastership (Arbitration)
A unit connected to the IEBus performs an operation for getting the bus to control other units. This operation is called arbitration. In arbitration, when the multiple units start transfer simultaneously, the bus mastership is given to one unit among them.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Only one unit can get bus mastership through arbitration, so the following priority for bus mastership is defined. (a) Priority according to communications type Broadcast communications (one-to-many communications) has priority over normal communications (one-to-one communications). (b) Priority according to master address A unit with the smallest master address has priority among units with the same communications type. Example: The master address is configured with 12 bits. A unit with H'000 has the highest priority, and a unit with H'FFF has the lowest priority. Note: When a unit loses arbitration, the unit can automatically enter retransfer mode (0 to 7 retransfer times can be selected by bits RN2 to RN0 in IEMCR). (2) Communications Mode The IEBus has three communications modes with different transfer speeds. Table 17.2 shows the transfer speed in each communications mode and the maximum number of transfer bytes in one communications frame. Table 17.2 Transfer speed and Maximum Number of Transfer Bytes in Each Communications Mode
Maximum Number Communications of Transfer Bytes Mode (byte/frame) 0 1 2 Notes: 16 32 128 Effective Transfer Speed*1 (kbps) = 12, 18, 24 MHz* About 3.9 About 17 About 26
2
= 12.58, 18.87, 25.16 MHz*2 About 4.1 About 18 About 27
Each unit connected to the IEBus should select a communications mode prior to performing communications. Note that correct communications is not guaranteed if the master and slave units do not adopt the same communications mode. In the case of communications between a unit with = 12 MHz and a unit with = 12.58 MHz, correct communications is not possible even if the same communications mode is adopted. This is similar to the case of communications between a unit with = 24 MHz and a unit with = 25.16 MHz, or between a unit with = 18 MHz and a unit with = 18.87 MHz. Communications must be performed at the same oscillation frequency. 1. An effective transfer speed when the maximum number of transfer bytes is transmitted. 2. Oscillation frequency when this LSI is used
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(3)
Communications Address
In the IEBus, a 12-bit specific communications addresses are allocated to individual units. A communications address is configured as follows. * Upper four bits: group number (number identifying a group to which the unit belongs) * Lower eight bits: unit number (number identifying individual units in a group) (4) Broadcast Communications
In normal transfer, a single master unit communicates with a single slave unit. So, one-to-one transfer or reception is performed. In broadcast communications, a single master unit communicates with multiple slave units. Since there are multiple slave units, acknowledgement is not returned from the slave units during communications. A broadcast bit decides whether broadcast or normal communications is performed. (For details of the broadcast bit, see section 17.1.2 (1) (b), Broadcast Bit. There are two types of broadcast communications. (a) Group broadcast communications Broadcast communications is performed to units with the same group number, meaning that those units have the same upper four bits of the communications address. (b) General broadcast communications Broadcast communications is performed to all units regardless of the group number. Group broadcast and general broadcast communications are identified by a slave address. (For details on the slave address, see section 17.1.2 (3), Slave Address Field.) 17.1.2 Communications Protocol
Figure 17.2 shows an IEBus transfer signal format. Communications data is transferred as a series of signals referred to as a communications frame. The number of data which can be transmitted in a single communications frame and the transfer speed differ according to communications mode.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(When = 12, 18, or 24MHz) Field name Number of bits Transfer time Mode 0 Mode 1 Mode 2 Approximately 7330 s Approximately 2090 s Approximately 1590 s P: Parity bit (1 bit) A: Acknowledge bit (1 bit) When A = 0: ACK When A = 1: NAK N: Number of bytes Note: The value of acknowledge bit is ignored in broadcast communications. Approximately 1590 x N s Approximately 410 x N s Approximately 300 x N s Header 1 1 Master Slave address address field field 12 1 12 11 P
Slave address
Control field 4
Control bits
1
1
Message length field 8 11
Message length bits
Data field 8
Data bits
1
1
8
Data bits
1
1
Start Broad- Master bit cast address
bit
PA
PA
PA
PA
PA
Figure 17.2 Transfer Signal Format (1) Header
Header is comprised of a start bit and a broadcast bit. (a) Start Bit The start bit is a signal for informing a start of data transfer to other units. A unit, which attempts to start data transfer, outputs a low-level signal (start bit) for a specified period and then outputs the broadcast bit. If another unit is already outputting a start bit when a unit attempts to output a start bit, the unit waits for completion of output of the start bit from the other unit without outputting the start bit, and then outputs the broadcast bit synchronized with the completion timing. Other units enter the receive state after detecting the start bit. (b) Broadcast Bit The broadcast bit is a bit to identify the type of communications: broadcast or normal. When this bit is cleared to 0, it indicates the broadcast communications. When it is set to 1, it indicates the normal communications. Broadcast communications includes group broadcast and general broadcast, which are identified by a value of the slave address. (For details of the slave address, see section 17.1.2 (3), Slave Address Field.) Since there are multiple slave units, which are communications destination units, in the case of broadcast communications, the acknowledge bit is not returned from each field described in (b) and below.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
When more than one unit starts transfer of communications frame at the same timing, broadcast communications has priority over normal communications, and arbitration occurs. (2) Master Address Field
The master address field is a field for transmitting the unit address (master address) to other units. The master address field is comprised of master address bits and a parity bit. The master address has 12 bits and are output MSB first. When more than one unit starts transfer of the broadcast bit having the same value at the same timing, arbitration is decided by the master address field. In the master address field, self-output data and data on the bus are compared for every one-bit transfer. If the self-output master address and data on the bus are different, the unit that loses arbitration, stops transfer, and enters the receive state. Since the IEBus is configured with wired AND, a unit having the smallest master address of the units in arbitration (arbitration master) wins in arbitration. Finally, only a single unit remains in the transfer state as a master unit after outputting 12-bit master address. Next, this master unit outputs a parity bit*, defines the master address to other units, and then enters the slave address field output state. Note: Since even parity is used, when the number of one bits in the master address is odd, the parity bit is 1. (3) Slave Address Field
The slave address field is a field to transmit an address (slave address) of a unit (slave unit) to which a master transmit data. The slave address field is comprised of slave address bits, a parity bit, and an acknowledge bit. The slave address has 12 bits and is output MSB first. The parity bit is output after the 12-bit slave address is transmitted in order to avoid receiving the slave address accidentally. The master unit then detects the acknowledgement from the slave unit in order to confirm that the slave unit exists on the bus. When the acknowledgement is detected, the master unit enters the control field output state. However, the master unit enters the control field output state without detecting the acknowledgement in broadcast communications.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
The slave unit returns the acknowledgement when the slave addresses match and the parities of the master and slave addresses are correct. When either of the parities of the master and slave addresses is wrong, the slave unit decides that the master or slave address is not correctly received and does not return the acknowledgement. In this case, the master unit enters the waiting (monitor) state, and communications end. In the case of broadcast communications, the slave address is used to identify the type of broadcast communications (group or general) as follows: * When the slave address is H'FFF: General broadcast communications * When the slave address is other than H'FFF: Group broadcast communications Note: The group number is the upper 4-bit value of the slave address in group broadcast communications. (4) Control Field
The control field is a field for transmitting the type and direction of the following data field. The control field is comprised of control bits, a parity bit, and an acknowledge bit. The control bits include four bits and are output MSB first. The parity bit is output following the control bits. When the parity is correct, and the slave unit can implement the function required from the master unit, the slave unit returns the acknowledgement and enters the message length field output state. However, if the slave unit cannot implement the requirements from the master unit even though the parity is correct, or if the parity is not correct, the slave unit does not return the acknowledgement, and returns to the waiting (monitor) state. The master unit enters the subsequent message length field output state after confirming the acknowledgement. When the acknowledgement is not confirmed, the master unit enters the waiting (monitor) state, and communications end. However, in the case of broadcast communications, the master unit enters the following message length field output state without confirming the acknowledgement. For details of the contents of the control bit, see table 17.4. (5) Message Length Field
The message length field is a field for specifying the number of transfer bytes. The message length field is comprised of message length bits, a parity bit, and an acknowledge bit.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
The message length has eight bits and is output MSB first. Table 17.3 shows the number of transfer bytes. Table 17.3 Contents of Message Length bits
Message Length bits (Hexadecimal) H'01 H'02 . . H'FF H'00 Note: * Number of Transfer Bytes 1 byte 2 bytes . . 255 bytes 256 bytes If a number greater than the maximum number of transfer bytes in one frame is specified, communications are performed in multiple frames depending on the communications mode. In this case, the message length bits indicate the number of remaining communications data after the first transfer. In this LSI, after the first transfer, the message length bits must be specified to the number of remaining communications data by a program, since these bits are not automatically specified by the hardware.
This field operation differs depending on the value of bit 3 in the control field: master transmission (bit 3 in the control bits is 1) or master reception (bit 3 in the control bits is 0). (a) Master Transmission The master unit outputs the message length bits and parity bit. When the parity is correct, the slave unit returns the acknowledgement and enters the following data field. Note that the slave unit does not return the acknowledgement in broadcast communications. In addition, when the parity is not correct, the slave unit decides that the message length field is not correctly received, does not return the acknowledgement, and returns to the waiting (monitor) state. In this case, the master unit also returns to the waiting state, and communications end. (b) Master Reception The slave unit outputs the message length bits and parity bit. When the parity is correct, the master unit returns the acknowledgement. When the parity is not correct, the master unit decides that the message length bits are not correctly received, does not return the acknowledgement, and returns to the waiting state. In this case, the slave unit also returns to the waiting state, and communications end.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(6)
Data Field
The data field is a field for data transmission/reception to the slave unit. The master unit transmits/receives data to/from the slave unit using the data field. The data field is comprised of data bits, a parity bit, and an acknowledge bit. The data bits include eight bits and are output MSB first. The parity bit and acknowledge bit following the data bits are output from the master unit and slave unit, respectively. Broadcast communications are performed only for the transmission of the master unit. In this case, the acknowledge bit is ignored. Operations in master transmission and master reception are described below. (a) Master Transmission The master unit transmits the data bits and parity bit to the slave unit to write data from the master unit to the slave unit. The slave unit receives the data bits and parity bit, and returns the acknowledgement if the parity bit is correct and the receive buffer is empty. If the parity bit is not correct or the receive buffer is not empty, the slave unit rejects acceptance of corresponding data and does not return the acknowledgement. When the slave unit does not return the acknowledgement, the master unit retransmits the same data. This operation is repeated until either the acknowledgement from the slave unit is detected or the maximum number of data transfer bytes is exceeded. When the parity is correct and the acknowledgement is output from the slave unit, the master unit transmits the subsequent data if data remains and the maximum number of transfer bytes is not exceeded. In the case of broadcast communications, the slave unit does not return the acknowledgement, and the master unit transfers data byte by byte. (b) Master Reception The master unit outputs synchronous signals corresponding to all data bits to be read from the slave unit. The slave unit outputs the data bits and parity bit on the bus in accordance with the synchronous signals from the master unit.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
The master unit reads the parity bit output from the slave unit, and checks the parity. If the parity is not correct, or the receive buffer is not empty, the master unit rejects acceptance of the data, and does not return the acknowledgement. The master unit reads the same data repeatedly if the number of data does not exceed the maximum number of transfer bytes in one frame. If the parity is correct and the receive buffer is empty, the master unit accepts data and returns the acknowledgement. The master unit reads in the subsequent data if the number of data does not exceed the maximum number of transfer bytes in one frame. (7) Parity bit
The parity bit is used to confirm that transfer data has no error. The parity bit is added to respective data of the master address, slave address, control, message length, and data bits. The even parity is used. When the number of one bits in data is odd, the parity bit is 1. When the number of one bits in data is even, the parity bit is 0. (8) Acknowledge bit
In normal communications (a single unit to a single unit communications), the acknowledge bit is added to the following position in order to confirm that data is correctly accepted. * * * * At the end of the slave address field At the end of the control field At the end of the message length field At the end of the data field
The acknowledge bit is defined below. * 0: indicates that the transfer data is acknowledged. (ACK) * 1: indicates that the transfer data is not acknowledged. (NAK) Note that the acknowledge bit is ignored in the case of broadcast communications. (a) Acknowledge bit at the End of the Slave Address Field The acknowledge bit at the end of the slave address field becomes NAK in the following cases and transfer is stopped. When the parity of the master address or slave address bits is incorrect When a timing error (an error in bit format) occurs When there is no slave unit
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(b) Acknowledge bit at the End of the Control Field The acknowledge bit at the end of the control field becomes NAK in the following cases and transfer is stopped. When the parity of the control bits is incorrect When bit 3 in the control bits is 1 (data write) although the slave receive buffer* is not empty When the control bits are set to the data read (H'3, H'7) although the slave transmit buffer* is empty When another unit which locked the slave unit requests H'3, H'6, H'7, H'A, H'B, H'E, or H'F in the control bits although the slave unit has been locked When the control bits are the locked address read (H'4, H'5) although the unit is not locked When a timing error occurs When the control bits are undefined Note: See section 17.1.3 (1), Slave Status Read (Control Bits: H'0, H'6). (c) Acknowledge Bit at the End of the Message Length Field The acknowledge bit at the end of the message length field becomes NAK in the following cases and transfer is stopped. When the parity of the message length bits is incorrect When a timing error occurs (d) Acknowledge Bit at the End of the Data Field The acknowledge bit at the end of the data field becomes NAK in the following cases and transfer is stopped. When the parity of the data bits is incorrect* When a timing error occurs after the previous transfer of the acknowledge bit When the receive buffer becomes full and cannot accept further data Note: In this case, data field is transferred repeatedly until the number of data reaches the maximum number of transfer bytes if the number of data does not exceed the maximum number of transfer bytes in one frame.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.1.3
Transfer Data (Data Field Contents)
The data filed contents are specified by the control bits. Table 17.4 Control Bit Contents
Setting Value Bit 3*1 H'0 H'1 H'2 H'3 H'4 H'5 H'6 H'7 H'8 H'9 H'A H'B H'C H'D H'E H'F 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Bit 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Bit 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Bit 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Function*2 Reads slave status (SSR) Undefined. Setting prohibited. Undefined. Setting prohibited. Reads data and locks Reads locked address (lower 8 bits) Reads locked address (upper 4 bits) Reads slave status (SSR) and unlocks Reads data Undefined. Setting prohibited. Undefined. Setting prohibited. Writes command and locks Writes data and locks Undefined. Setting prohibited. Undefined. Setting prohibited. Writes command Writes data
Notes: 1. According to the value of bit 3 (MSB), the transfer directions of the message length bits in the following message length field and data in the data field vary. When bit 3 is 1: Data is transferred from the master unit to the slave unit. When bit 3 is 0: Data is transferred from the slave unit to the master unit. 2. H'3, H'6, H'A, and H'B are control bits to specify lock setting and cancellation. When the undefined values of H'1, H'2, H'8, H'9, H'C, and H'D are transmitted, the acknowledge bit is not returned.
When the control bits received from another unit which locked are not included in table 17.5, the slave unit which has been locked by the master unit rejects acceptance of the control bits and does not return the acknowledge bit.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Table 17.5 Control Field for Locked Slave Unit
Setting Value Bit 3 H'0 H'4 H'5 0 0 0 Bit 2 0 1 1 Bit 1 0 0 0 Bit 0 0 0 1 Function Reads slave status Reads locked address (upper 8 bits) Reads locked address (lower 4 bits)
(1)
Slave Status Read (Control Bits: H'0, H'6)
The master unit can decide the reason the slave unit does not return the acknowledgement (ACK) by reading the slave status (H'0, H'6). The slave status indicates the result of the last communications that the slave unit performs. All slave units can provide slave status information. Figure 17.3 shows bit configuration of the slave status.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
MSB Bit 7 Bit 6 Bit Bit 7, bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
LSB Bit 0
Value Description 00 01 10 11 Mode 0 Mode 1 Mode 2 For future use Fixed 0 Slave transmission halted Slave transmission enabled Fixed 0 Unit is unlocked Unit is locked Slave receive buffer is empty Slave receive buffer is not empty Slave transmit buffer is empty Slave transmit buffer is not empty Indicates the highest mode supported by a unit. *1
Bit 5 Bit 4*2
0 0 1
Bit 3 Bit 2
0 0 1
Bit 1*3
0 1
Bit 0*4
0 1
Notes: 1. Since this LSI can support up to mode 2, bits 6 and 7 are fixed to 10. 2. The value of bit 4 can be selected by the STE bit in the IEBus master unit address register 1 (IEAR1). 3. The slave receive buffer is a buffer which is accessed during data write (control bits: H'8, H'A, H'B, H'E, H'F). In this LSI, the slave receive buffer corresponds to the IEBus receive buffer register (IERBR); and bit 2 is the value of the RxRDY flag in the IEBus receive status register (IERSR). 4. The slave transmit buffer is a buffer which is accessed during data read (control bits: H'3, H'7). In this LSI, the slave transmit buffer corresponds to the IEBus transmit buffer register (IETBR) when SRQ = 1 in the IEBus general flag register (IEFLG); and bit 1 is a value which reverses the TxRDY flag in the IEBus transmit/runaway status register (IETSR).
Figure 17.3 Bit Configuration of Slave Status (SSR) (2) Data Command Transfer (Control Bits: Read (H'3, H'7), Write (H'A, H'B, H'E, H'F))
In the case of data read (H'3, H'7), data in the data buffer of the slave unit is read in the master unit. In the case of data write (H'B or H'F) or command write (H'A or H'E), data received in the slave unit is processed in accordance with the operation specification of the slave unit. Notes: 1. The user can select data and commands freely in accordance with the system. 2. H'3, H'A, or H'B may lock depending on the communications condition and status. (3) Locked Address Read (Control Bits: H4, H5)
In the case of the locked address read (H'4 or H'5), the address (12 bits) of the master unit which issues lock instruction is configured in bytes shown in figure 17.4.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
MSB Control bits: H'4 Lower 8 bits
LSB
Control bits: H'5
Undefined
Upper 4 bits
Figure 17.4 Locked Address Configuration (4) Locking/Unlocking (Control Bits: Setting (H'3, H'A, HB), Cancellation: (H'6))
The lock function is used for message transfer over multiple communications frames. Locked unit receives data only from the unit which has locked. Locking and unlocking are described below. * Locking When the acknowledge bit of 0 in the message length field is transmitted/received with the control bits indicating the lock operation, and then the communications frame is completed before completion of data transmission/reception for the number of bytes specified by the message length bits, the slave unit is locked by the master unit. In this case, the bit (bit 2) relevant to lock in the byte data indicating the slave status is set to 1. Lock is set only when the number of data exceeds the maximum number of transfer bytes in one frame. Lock is not set by other error termination. * Unlocking When the control bits indicate the lock (H'3, H'A, or H'B) or unlock (H'6) operation and the byte data for the number of bytes specified by the message length bits are transmitted/received in a single communications frame, the slave unit is unlocked by the master unit. In this case, a bit (bit 2) relevant to lock in the byte indicating the slave status is cleared to 0. Note that locking and unlocking are not performed in broadcast communications. Note: * There are three methods to unlock by a locked unit itself. * Perform hardware reset * Enter module stop mode * Issue unlock command by the IEBus command register (IECMR)
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Note that the LCK flag in IEFLG can be used to check whether the unit is locked/unlocked.
17.1.4
Bit Format
Figure 17.5 shows the bit format (conceptual diagram) configuring the IEBus communications frame.
Logic 1 Logic 0
Preparation Synchronous period period
Data period
Halt period
Active low: Logic 1 = low level and logic 0 = high level Active high: Logic 1 = high level and logic 0 = low level
Figure 17.5 IEBus Bit Format (Conceptual Diagram) Each period of bit format for use of active high signals is described below. * * * * Preparation period: first logic 1 period (high level) Synchronous period: subsequent logic 0 period (low level) Data period: period indicating bit value (logic 1: high level, logic 0: low level) Halt period: last logic 1 cycle (high level)
For use of active low signals, levels are reversed from the active high signals. The synchronous and data periods have approximately the same length. The IEBus is synchronized bit by bit. The specifications for the time of all bits and the periods allocated to the bits differ depending on the type of transfer bits and the unit (master or slave unit).
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.2
Input/Output Pins
Table 17.6 shows the IEB pin configuration. Table 17.6 Pin Configuration
Name IEBus transmit data pin IEBus receive data pin Abbreviation I/O Tx Rx O I Function Transmit data output pin Receive data input pin
17.3
Register Descriptions
The IEB has the following registers. For the module stop control register, see section 22.1.2, Module Stop Control Registers A to C (MSTPCRA to MSTPCRC). * * * * * * * * * * * * * * * * * * * * * IEBus control register (IECTR) IEBUS command register (IECMR) IEBus master control register (IEMCR) IEBus master unit address register 1 (IEAR1) IEBus master unit address register 2 (IEAR2) IEBus slave address setting register 1 (IESA1) IEBus slave address setting register 2 (IESA2) IEBus transmit message length register (IETBFL) IEBus transmit buffer register (IETBR) IEBus reception master address register 1 (IEMA1) IEBus reception master address register 2 (IEMA2) IEBus receive control field register (IERCTL) IEBus receive message length register (IERBFL) IEBus receive buffer register (IERBR) IEBus lock address register 1 (IELA1) IEBus lock address register 2 (IELA2) IEBus general flag register (IEFLG) IEBus transmit/runaway status register (IETSR) IEBus transmit/runaway interrupt enable register (IEIET) IEBus transmit error flag register (IETEF) IEBus receive status register (IERSR)
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
* IEBus receive interrupt enable register (IEIER) * IEBus receive error flag register (IEREF) 17.3.1 IEBus Control Register (IECTR)
IECTR controls IEB operation (switches IEBus pin/port functions, selects input/output level, and enables receive operation).
Bit 7 Bit Name IEE Initial Value 0 R/W R/W Description IEB Pin Switch Switches IEB pin and port functions. 0: The PG3/Rx/CS1 and PG2/Tx/CS2 pins function as the PG3/CS1 and PG2/CS2 pins. 1: The PG3/Rx/CS1 and PG2/Tx/CS2 pins function as the Tx and Rx pins. 6 IOL 0 R/W Input/Output Level Selects input/output pin level (polarity) for the Rx and Tx pins. 0: Pin input/output is set to active low. (Logic 1 is low level and logic 0 is high level.) 1: Pin input/output is set to active high. (Logic 1 is high level and logic 0 is low level.)
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 5
Bit Name DEE
Initial Value 0
R/W R/W
Description Broadcast Receive Error Interrupt Enable Since the acknowledgement is not returned between the master and slave units in broadcast reception, the master unit cannot decide whether the slave unit is in the receive enabled state. If this bit is set to 1, a reception error interrupt occurs (note that there is not the corresponding bit in the IEBus receive error flag register to this error) when the receive buffer is not in the receive enabled state during receiving the control field in broadcast reception (when the RE bit is not set to 1 or the RxRDY flag is set.). At this time, the master address is stored in IEMA1 and IEMA2. The receive data is not stored in IERCTL. While this bit is 0, a reception error interrupt does not occur when the receive buffer is not in the receive enabled state, and the reception stops and enters the wait state. The master address is not saved. 0: A broadcast receive error is not generated up to the control field. 1: A broadcast receive error is generated up to the control field.
4 3
CKS1 RE
0 0
R/W R/W
Input Clock Select Selects clock used by the IEB. See table 17.7. Receive Enable Enables/disables IEB reception. This bit must be set at the initial setting before frame reception. Changing this bit before receiving the control field is valid, however, changing this bit after receiving the control field is invalid and the value before the change is validated. 0: Reception is disabled. 1: Reception is enabled.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 2
Bit Name LUEE
Initial Value 0
R/W R/W
Description Last Byte Underrun Enable Sets whether to generate an underrun error when the last data field byte is transferred in data transmission. If the IEB reads from IETBR when the TxRDY flag is set (the transmit buffer register (IETBR) is empty), an underrun error occurs. In transmission using the DTC, an underrun error occurs at the last byte transmission if the CPU did not clear the TxRDY flag, because the DTC does not clear the TxRDY flag. When the DTC is used, set this bit to 0 to mask an underrun error generated at the last byte transmission. When the DTC is not used, set this bit to 1 to generate an underrun error at the last byte transmission. 0: An underrun error does not occur at the last byte transmission (when using the DTC) 1: An underrun error does not occur at the last byte transmission (when not using the DTC)
1 0
CKS0
0 0
R/W
Input Clock Select Selects clock used by the IEB. See table 17.7. Reserved This bit is always read as 0 and cannot be modified.
Table 17.7 List of System Clock Division Ratio
Bit 4 CKS1 0 0 1 1 Bit 1 CKS0 0 1 0 1 Function 1/4 system clock is used ( = 24MHz, 25.16 MHz) 1/3 system clock is used ( = 18MHz, 18.87 MHz) 1/2 system clock is used ( = 12MHz, 12.58 MHz) Setting prohibited
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.2
IEBus Command Register (IECMR)
IECMR issues commands to control IEB communications. Since this register is a write-only register, bit-manipulation instructions should not be used when writing. See section 2.9.4, Access Method for Registers with Write-only Bits.
Bit Bit Name Initial Value All 0 R/W Description Reserved The read value is undefined. In order to avoid malfunction, do not use bit manipulation instructions. These bits cannot be modified. 2 1 0 CMD2 CMD1 CMD0 0 0 0 W W W Command Bits These bits issue a command to control IEB communications. When the CMX flag in IEFLG is set after the command issuance, the command is indicated to be in execution. When the CMX flag becomes 0, the operation state is entered. The read value is undefined. Do not use a bit manipulation instruction that causes malfunction. 000: No operation. Operation is not affected. 001: Unlock (required from other units)* 011: Stops master communications*
2 1
7 to 3
010: Requires communications as the master 100: Undefined bits. Operation is not affected by this command. 101: Requires data transfer from the slave. 110: Stops data transfer from the slave* . 111: Undefined bits. Operation is not affected by this command. Notes: 1. Do not execute this command in slave communications. Execute this command after slave communications ends or in master communications. If this command is issued in slave communications, this command is ignored. 2. This command is valid during master communications (MRQ = 1). In other states, this command issuance is ignored. If this command is issued in master communications, the communications controller immediately enters the wait state. At this time, the issued master transmission request ends (MRQ = 0).
3
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
3. This command is valid during slave communications (SRQ = 1). In other states, this command issuance is ignored. Once this command was issued in slave transmission, the SRQ flag is 0 before slave transmission. Therefore, a transmit request from the master is not responded. If a transmit request is issued during slave transmission, the transmission stops and the wait state is entered (SRQ = 0).
17.3.3
IEBus Master Control Register (IEMCR)
IEMCR sets communications conditions for master communications (selection of broadcast or normal communications, retransmission counts at arbitration loss, and control bits value). It is not necessary to set this register for slave communications.
Bit 7 Bit Name SS Initial Value 1 R/W R/W Description Broadcast/Normal Communications Select Selects broadcast or normal communications for master communications. 0: Broadcast communications 1: Normal communications 6 5 4 RN2 RN1 RN0 0 0 0 R/W R/W R/W Retransmission Counts Set the number of times retransmission is performed when arbitration is lost in master communications. If arbitration is lost for a specified number of times, the AL flag in IETEF and the TxE bit in IETSR is set and transmission ends with a transmit error. If arbitration is won during retransmission, the retransmission count is automatically restored to the initial setting after master address transfer. 000: 0 001: 1 010: 2 011: 3 100: 4 101: 5 110: 6 111: 7
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 3 2 1 0
Bit Name CTL3* CTL2 CTL1 CTL0
1
Initial Value 0 0 0 0
R/W R/W R/W R/W R/W
Description Control bits Set the control bits in the control field for master transmission. 0000: Reads slave status 0001: Undefined. Setting prohibited. 0010: Undefined. Setting prohibited. 0011: Reads data and locks*
2
0100: Reads locked address (lower 8 bits) 0101: Reads locked address (upper 4 bits) 0110: Reads slave status and unlocks* 0111: Reads data 1000: Undefined. Setting prohibited. 1001: Undefined. Setting prohibited. 1010: Writes command and locks* 1011: Writes data and locks*
2 2 2
1100: Undefined. Setting prohibited. 1101: Undefined. Setting prohibited. 1110: Writes command 1111: Writes data Notes: 1. CTL3 decides the data transfer direction of the message length bits in the message length field and data bits in the data field: CTL3 = 1: Transfer is performed from master unit to slave unit CTL3 = 0: Transfer is performed from slave unit to master unit 2. Control bits to lock and unlock
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.4
IEBus Master Unit Address Register 1 (IEAR1)
IEAR1 sets the lower 4 bits of the master unit address and communications mode. In master communications, the master unit address becomes the master address field value. In slave communications, the master unit address is compared with the received slave address field.
Bit 7 6 5 4 3 2 Bit Name IAR3 IAR2 IAR1 IAR0 IMD1 IMD0 Initial Value 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W IEBus Communications Mode Set IEBus communications mode. 00: Communications mode 0 01: Communications mode 1 10: Communications mode 2 11: Setting prohibited 1 0 STE 0 0 R/W Reserved This bit is always read as 0 and cannot be modified. Slave Transmission Setting Sets bit 4 in the slave status register. Transmitting the slave status register informs the master unit that the slave transmission enabled state is entered by setting this bit to 1. Note that this bit only sets the slave status register value and does not affect slave transmission directly. 0: Bit 4 in the slave status register is 0 (slave transmission stop state) 1: Bit 4 in the slave status register is 1 (slave transmission enabled state) Description Lower 4 Bits of IEBus Master Unit Address Set the lower 4 bits of the master unit address.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.5
IEBus Master Unit Address Register 2 (IEAR2)
IEAR2 sets the upper 8 bits of the master unit address. In master communications, this register becomes the master address field value. In slave communications, this register is compared with the received slave address field.
Bit 7 6 5 4 3 2 1 0 Bit Name IAR11 IAR10 IAR9 IAR8 IAR7 IAR6 IAR5 IAR4 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Upper 8 Bits of IEBus Master Unit Address Set the upper 8 bits of the master unit address.
17.3.6
IEBus Slave Address Setting Register 1 (IESA1)
IESA1 sets the lower 4 bits of the communications destination slave unit address. For slave communications, it is not necessary to set this register.
Bit 7 6 5 4 Bit Name ISA3 ISA2 ISA1 ISA0 Initial Value 0 0 0 0 All 0 R/W R/W R/W R/W R/W Reserved These bits are always read as 0 and cannot be modified. Description Lower 4 Bits of IEBus Slave Address These bits set the lower 4 bits of the communications destination slave unit address
3 to 0
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.7
IEBus Slave Address Setting Register 2 (IESA2)
IESA2 sets the upper 8 bits of the communications destination slave unit address. For slave communications, it is not necessary to set this register.
Bit 7 6 5 4 3 2 1 0 Bit Name ISA11 ISA10 ISA9 ISA8 ISA7 ISA6 ISA5 ISA4 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Upper 8 Bits of IEBus Slave Address Set upper 8 bits of the communications destination slave unit address
17.3.8
IEBus Transmit Message Length Register (IETBFL)
IETBFL sets the message length for master or slave transmission.
Bit 7 6 5 4 3 2 1 0 Bit Name TBFL7 TBFL6 TBFL5 TBFL4 TBFL3 TBFL2 TBFL1 TBFL0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Transmit Message Length Set the message length for master or slave transmission. If a value exceeding the maximum transmit bytes for one frame is set in IETBFL, communications are performed with two or more frames in some communications modes. In this case, in or after the second frame, the message length value should be the number of bytes of the remaining communications data, however, the initial IETBFL setting remains unchanged. Therefore, for the second frame or after, re-set the number of bytes of the remaining communications data.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.9
IEBus Transmit Buffer Register (IETBR)
IETBR is a 1-byte buffer to which data to be transmitted in master or slave transmission is written. IETBR is empty when the TxRDY flag in IETSR is 1. Check the TxRDY flag before setting transmit data in IETBR. Data written in IETBR is transmitted in the data field in master or slave transmission. Figure 17.6 shows the correspondence between the communications signal format and registers for IEBus data transfer.
Bit 7 6 5 4 3 2 1 0 Bit Name TBR7 TBR6 TBR5 TBR4 TBR3 TBR2 TBR1 TBR0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Data to be transmitted is written to this 1-byte buffer.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
[In master transmission] Communications frame Master address Slave address Control bits
Message length bits
Data bits
Register
IEAR1, IEAR2
IESA1, IESA2
CTL3 to CTL0 in IEMCR
IETBFL
IETBR
[In slave transmission] Communications frame Master address Slave address (*2) Register (*1) IEAR1, IEAR2 (*3) IETBFL IETBR Control bits
Message length bits
Data bits
Notes: 1. In slave transmission, the received master address is not saved. If the unit is locked, address comparison performed. 2. The received slave address is compared with IEAR1 and IEAR2, and if these addresses match, operation continues. 3. In slave transmission, the received control bits are not saved. The received control bits are decoded to decide the subsequent operation.
Figure 17.6 Transmission Signal Format and Registers in Data Transfer 17.3.10 IEBus Reception Master Address Register 1 (IEMA1) IEMA1 indicates the lower four bits of the communications destination master unit address in slave/broadcast reception. This register is enabled when slave/broadcast reception starts, and the contents are changed at the timing of setting the RxS flag in IERSR. If a broadcast receive error interrupt is selected by the DEE bit in IECTR and the receive buffer is not in the receive enabled state on control field reception, a receive error interrupt is generated and the lower 4 bits of the master address are stored in IEMA1. This register cannot be modified.
Bit 7 6 5 4 Bit Name IMA3 IMA2 IMA1 IMA0 Initial Value 0 0 0 0 All 0 R/W R R R R R Description Lower 4 Bits of IEBus Reception Master Address Indicates the lower 4 bits of the communications destination master unit address in slave/broadcast reception. Reserved These bits are always read as 0.
3 to 0
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.11 IEBus Reception Master Address Register 2 (IEMA2) IEMA2 indicates the upper 8 bits of the communications destination master unit address in slave/broadcast reception. This register is enabled when slave/broadcast reception starts, and the contents are changed at the timing of setting the RxS flag in IERSR. If a broadcast receive error interrupt is selected with the DEE bit in IECTR and the receive buffer is not in the receive enabled state at control field reception, a receive error interrupt is generated and the upper 8 bits of the master address are stored in IEMA2. This register cannot be modified by a write.
Bit 7 6 5 4 3 2 1 0 Bit Name IMA11 IMA10 IMA9 IMA8 IMA7 IMA6 IMA5 IMA4 Initial Value 0 0 0 0 0 0 0 0 R/W R R R R R R R R Description Upper 8 Bits of IEBus Reception Master Address Indicates the upper 8 bits of the communications destination master unit address in slave/broadcast reception.
17.3.12 IEBus Receive Control Field Register (IERCTL) IERCTL indicates the control field value in slave/broadcast reception. This register is enabled when slave/broadcast receive starts, and the contents are changed at the timing of setting the RxS flag in IERSR. This register cannot be modified.
Bit Bit Name Initial Value All 0 0 0 0 0 R/W R R R R R Description Reserved These bits are always read as 0. 3 2 1 0 RCTL3 RCTL2 RCTL1 RCTL0 IEBus Receive Control Field Indicates the control field value in slave/broadcast reception.
7 to 4
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.13 IEBus Receive Message Length Register (IERBFL) IERBFL indicates the message length field in slave/broadcast reception. This register is enabled when slave/broadcast receive starts, and the contents are changed at the timing of setting the RxS flag in IERSR. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name RBFL7 RBFL6 RBFL5 RBFL4 RBFL3 RBFL2 RBFL1 RBFL0 Initial Value 0 0 0 0 0 0 0 0 R/W R R R R R R R R Description IEBus Receive Message Length Indicates the contents of message length field in slave/broadcast reception.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.14 IEBus Receive Buffer Register (IERBR) IERBR is a 1-byte read-only buffer that stores data received in master or slave reception. This register can be read when the RxRDY flag in IERSR is set to 1. This register indicates the data field value both in master and slave receptions. This register cannot be modified. Figure 17.7 shows the relationship between transmission signal format and registers in IEBus data reception.
Bit 7 6 5 4 3 2 1 0 Bit Name RBR7 RBR6 RBR5 RBR4 RBR3 RBR2 RBR1 RBR0 Initial Value 0 0 0 0 0 0 0 0 R/W R R R R R R R R Description One-byte read-only buffer that stores data received in master or slave reception
[In slave reception] Communications frame Master address Slave address (*) Register IEMA1, IEMA2 IEAR1, IEAR2 IERCTL IERBFL IERBR Control bits
Message length bits
Data bits
Note: * Received slave address is compared with IEAR1 and IEAR2. If they match, the following operations are performed.
[In master reception] Communications frame Master address Slave address Control bits
Message length bits
Data bits
Register settings
IEAR1, IEAR2
IESA1, IESA2
CTL3 to CTL0 in IEMCR
IERBFL
IERBR
Figure 17.7 Relationship between Transmission Signal Format and Registers in IEBus Data Reception
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.15 IEBus Lock Address Register 1 (IELA1) IELA1 specifies the lower 8 bits of a locked address when a unit is locked. Data in this register is valid when the LCK flag in IEFLG is set to 1. This register cannot be modified.
Bit 7 6 5 4 3 2 1 0 Bit Name ILA7 ILA6 ILA5 ILA4 ILA3 ILA2 ILA1 ILA0 Initial Value 0 0 0 0 0 0 0 0 R/W R R R R R R R R Description Lower 8 Bits of IEBus Lock Address Stores the lower 8 bits of the master unit address when a unit is locked.
17.3.16 IEBus Lock Address Register 2 (IELA2) IELA2 is an 8-bit read-only register that specifies the upper 4 bits of a locked address when a unit is locked. Data in this register is valid when the LCK flag in IEFLG is set to 1. This register cannot be modified.
Bit Bit Name Initial Value All 0 0 0 0 0 R/W R R R R R Description Reserved These bits are always read as 0. 3 2 1 0 ILA11 ILA10 ILA9 ILA8 Upper 4 Bits of IEBus Locked Address Stores the upper 4 bits of the master unit address when a unit is locked.
7 to 4
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.17 IEBus General Flag Register (IEFLG) IEFLG indicates the IEB command execution status, lock status and slave address match, and broadcast reception detection. This register cannot be modified.
Bit 7 Bit Name CMX Initial Value 0 R/W R Description Command Execution Status Indicates the command execution status. 1: A command is being executed [Setting condition] * When a master communications request or slave transmit request command is issued while the MRQ, SRQ, or SRE flag is set to 1
0: A command execution is completed [Clearing condition] * 6 MRQ 0 R When a command execution has been completed Master Communications Request Indicates whether or not the unit is in communications request state as a master unit. 1: The unit is in communications request state as a master unit [Setting condition] * When the CMX flag is cleared to 0 after the master communications request command is issued
0: The unit is not in communications request status as a master unit [Clearing condition] * When the master communications have been completed
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 5
Bit Name SRQ
Initial Value 0
R/W R
Description Slave Transmission Request Indicates whether or not the unit is in transmit request status as a slave unit. 1: The unit is in transmit request status as a slave unit [Setting condition] * When the CMX flag is cleared to 0 after the slave transmit request command is issued.
0: The unit is not in transmit request status as a slave unit [Clearing condition] * 4 SRE 0 R When a slave transmission has been completed. Slave Receive Status Indicates the execution status in slave/broadcast reception. 1: Slave/broadcast reception is being executed [Setting condition] * When the slave/broadcast reception is started while the RE bit in IECTR is set to 1.
0: Slave/broadcast reception is not being executed [Clearing condition] * When the slave/broadcast reception has been completed.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 3
Bit Name LCK
Initial Value 0
R/W R
Description Lock Status Indication Set to 1 when a unit is locked by a lock request from the master unit. IELA1 and IELA2 values are valid only when this flag is set to 1. 1: A unit is locked [Setting condition] * When data for the number of bytes specified by the message length is not received after the control bits that make the unit locked are received from the master unit. (The LCK flag is set to 1 only when the message length exceeds the maximum number of transfer bytes in one frame. This flag is not set by completion of other errors.)
0: A unit is unlocked [Clearing condition] * 2 1 RSS 0 0 R R When an unlock condition is satisfied or when an unlock command is issued.
Reserved This bit is always read as 0. Receive Broadcast Bit Status Indicates the received broadcast bit value. This flag is valid when the slave/broadcast reception is started. (This flag is changed at the timing of setting the RxS flag in IERSR.) The previous value remains unchanged until the next slave/broadcast reception is started.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 0
Bit Name GG
Initial Value 0
R/W R
Description General Broadcast Reception Acknowledgement Set to 1 when the slave address is acknowledged as H'FFF in broadcast reception. As well as the receive broadcast bit, this flag is valid when the slave/broadcast reception is started. (This flag is changed at the timing of setting the RxS flag in IERSR.) The previous value remains unchanged until the next slave/broadcast reception is started. This flag is cleared to 0 in slave normal reception. [Setting condition] * When H'FFF is acknowledged in the slave field in broadcast reception A unit is in slave reception When H'FFF is not acknowledged in slave field in broadcast reception
[Clearing conditions] * *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.18 IEBus Transmit/Runaway Status Register (IETSR) IETSR detects transmit data ready, transmit start, transmit normal completion, transmit completion with an error, or runaway states. Each status flags in IETSR corresponds to a bit in the IEBus transmit/runaway interrupt enable register (IEIET) that enables or disables each interrupt.
Bit 7 Bit Name TxRDY Initial Value 1 R/W R/W Description Transmit Data Ready Indicates that the next data can be written to IETBR since IETBR is empty. This flag is automatically cleared by DTC* data transfer. When data is transmitted by the CPU, this flag must be cleared by software. This flag is cleared by writing 0 after reading a 1 from this flag. [Setting conditions] * * Immediately after reset When data can be written to IETBR (when IEB has loaded data from IETBR to the transmit shift register.) When writing 0 after reading TxRDY = 1 When data is written to TBR by the DTC by a TxRDY request.
[Clearing conditions] * *
Note: This flag is not cleared on the end byte of DTC transfer. 6 to 4 3 IRA All 0 0 R/W Reserved These bits are always read as 0 and cannot be modified. IEBus Runaway State Indicates that the on-chip microprogram for IEBus control is in the runaway states. This flag is set to 1 when a runaway occurs during either IEBus transmission or reception. (This flag is not a transfer specific flag and is also set for a reception runaway.) [Setting condition] * When the on-chip microprogram is in the runaway states When writing 0 after reading IRA = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 2
Bit Name TxS
Initial Value 0
R/W R/W
Description Transmit Start Detection Indicates that the IEB starts transmission. [Setting conditions] * Master transmission: When the arbitration is won and when the master address field transmission is completed Slave transmission: When the control bits of H'3 (0011) or H'7 (0111) is received from the master unit meaning that data transfer is requested When writing 0 after reading TxS = 1
*
[Clearing condition] * 1 TxF 0 R/W Transmit Normal Completion Indicates that data for the number of bytes specified by the message length bits has been transmitted with no error. [Setting condition] * When data for the number of bytes specified by the message length bits has been transmitted normally When writing 0 after reading TxF = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 0
Bit Name TxE
Initial Value 0
R/W R/W
Description Transmit Error Completion Indicates that data for the number of bytes specified by the message length bits is not completed and that the data transmission is terminated. The source of this error can be checked by the contents of IETEF. This flag is set at the timing that an error indicated by IETEF occurs. The TxE flag can be cleared even when the error source flag in IETEF is set to 1 because the TxE flag is not logically ORed with the flags in IETEF. In master reception, an error (arbitration loss, timing error, or NAK reception) generated after a master communications command is issued before master reception starts will be detected as a transmit error. [Setting condition] * When the data for the number of bytes specified by the message length bits is not completed and when the transmission is terminated When writing 0 after reading TxE = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.19 IEBus Transmit/Runaway Interrupt Enable Register (IEIET) IEIET enables/disables IETSR transmit ready, transmit start, transmit normal completion, transmit completion with an error, and runaway interrupts.
Bit 7 Bit Name TxRDYE Initial Value 0 R/W R/W Description Transmit Data Ready Interrupt Enable Enables/disables a transmit data ready interrupt. 0: Disables a transmit data ready (TxRDY) interrupt 1: Enables a transmit data ready (TxRDY) interrupt 6 to 4 3 IRAE All 0 0 R/W Reserved These bits are always read as 0 and cannot be modified. IEBus Runaway State Interrupt Enable Enables/disables an IEBus runaway state interrupt. 0: Disables an IEBus runaway state interrupt (IRA) 1: Enables an IEBus runaway state interrupt (IRA) 2 TxSE 0 R/W Transmit Start Interrupt Enable Enables/disables a transmit start (TxS) interrupt. 0: Disables a transmit start (TxS) interrupt 1: Enables a transmit start (TxS) interrupt 1 TxFE 0 R/W Transmit Normal Completion Interrupt Enable Enables/disables a transmit normal completion (TxF) interrupt. 0: Disables a transmit normal completion (TxF) interrupt 1: Enables a transmit normal completion (TxF) interrupt 0 TxEE 0 R/W Transmit Error Termination Interrupt Enable Enables/disables a transmit error termination (TxE) interrupt. 0: Disables a transmit error termination (TxE) interrupt 1: Enables a transmit error termination (TxE) interrupt
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.20 IEBus Transmit Error Flag Register (IETEF) IETEF checks the source of a TxE interrupt indicated in IETSR. This register detects an overflow of a maximum number of bytes in one frame, arbitration loss, underrun error, timing error, and NAK reception.
Bit Bit Name Initial Value All 0 0 R/W R/W Description Reserved These bits are always read as 0 and cannot be modified. 4 AL Arbitration Loss The IEB retransmits from the start bit for the number of times specified by bits RN2 to Rn0 in IEMCR if the arbitration has been lost in master communications. If the arbitration has been lost for the specified number of times, the AL and TxE flags are set to enter the wait state. If the arbitration has been won within retransmit for the specified number of times, this flag is not set to 1. This flag is set only when the arbitration has been lost and the wait state is entered. [Setting condition] * When the arbitration has been lost during data transmission and the transmission has been terminated When writing 0 after reading AL = 1
7 to 5
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 3
Bit Name UE
Initial Value 0
R/W R/W
Description Underrun Error Indicates that an underrun error has occurred during data transmission. The IEB detects an underrun error occurrence when the IEB fetches data from IETBR while the TxRDY flag is set to 1, and the IEB sets the TxE flag and enters the wait state. Accordingly, when the TxRDY flag is not cleared even if data is written to IETBR, an underrun error occurs and data transmission is terminated. Note that the TxRDY flag must be cleared in data transmission by the CPU. [Setting condition] * When the IEB loads data from IETBR to the transmit shift register while the TxRDY flag is set to 1 When writing 0 after reading UE = 1
[Clearing condition] * 2 TTME 0 R/W Timing Error Set to 1 if data is not transmitted at the timing specified by the IEBus protocol during data transmission. The IEB sets the TxE flag and enters the wait state. [Setting condition] * * When a timing error occurs during data transmission When writing 0 after reading TTME = 1 [Clearing condition]
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 1
Bit Name RO
Initial Value 0
R/W R/W
Description Overflow of Maximum Number of Transmit Bytes in One Frame Indicates that the maximum number of bytes defined by communications mode have been transmitted because a NAK has been received from the receive unit and retransmit has been performed, or that transmission has not been completed because the message length value exceeds the maximum number of transmit bytes in one frame. The IEB sets the TxE flag and enters the wait state. [Setting condition] * When the transmit has not been completed although the maximum number of bytes defined by communications mode have been transmitted When writing 0 after reading RO = 1
[Clearing condition] * 0 ACK 0 R/W Acknowledge bit Status Indicates the data received in the acknowledge bit of the data field. * Acknowledge bit other than in the data field The IEB terminates the transmission and enters the wait state if a NAK is received. In this case, this bit and the TxE flag are set to 1. * Acknowledge bit in the data field The IEB retransmits data up to the maximum number of bytes defined by communications mode until an ACK is received from the receive unit if a NAK is received from the receive unit during data field transmission. In this case, when an ACK is received from the receive unit during retransmission, this flag is not set and transmission will be continued. When transmission is terminated without receiving an ACK, this flag is set to 1. Note: This flag is invalid in broadcast communications. [Setting condition] * * When the acknowledge bit of 1 (NAK) is detected When writing 0 after reading ACK = 1 [Clearing condition]
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.21 IEBus Receive Status Register (IERSR) IERSR detects receive data ready, receive start, transmit/receive normal completion, or receive completion with an error. Each status flag in IERSR corresponds to a bit in the IEIER that enables/disables each interrupt.
Bit 7 Bit Name RxRDY Initial Value 1 R/W R/W Description Receive Data Ready Indicates that the receive data is stored in IERBR and that the receive data can be read. This flag is automatically cleared by DTC* data transfer. When data is transmitted by the CPU, this flag must be cleared by software. [Setting condition] * When data reception has been completed normally and receive data has been loaded to IERBR. When writing 0 after reading RxRDY = 1 When IERBR data is read by the DTC by a RxRDY request.
[Clearing conditions] * *
Note: This flag cannot be cleared on the end byte of the DTC transfer. 6 to 3 2 RxS All 0 0 R/W Reserved These bits are always read as 0 and cannot be modified. Receive Start Detection Indicates that the IEB starts reception. [Setting conditions] * Master reception: When the message length field has been received from the slave unit correctly after the arbitration is won and the control field transmission is completed Slave reception: When the message length field has been received from the master unit correctly When writing 0 after reading RxS = 1
*
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 1
Bit Name RxF
Initial Value 0
R/W R/W
Description Receive Normal Completion Indicates that data for the number of bytes specified by the message length bits has been received and with no error. [Setting condition] * When data for the number of bytes specified by the message length bits has been received normally. When writing 0 after reading RxF = 1
[Clearing condition] * 0 RxE 0 R/W Receive Error Completion Indicates that data for the number of bytes specified by the message length bits is not completed and that the data reception is terminated. The source of this error can be checked by the contents of IEREF. This flag is set at the timing that an error indicated by IEREF occurs. The RxE flag can be cleared even when the error source flag in IEREF is set to 1 because the RxE flag is not logically ORed with the flags in IEREF. [Setting condition] * When the data for the number of bytes specified by the message length bits is not completed and when the reception is terminated. When writing 0 after reading RxE = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.22 IEBus Receive Interrupt Enable Register (IEIER) IEIER enables/disables IERSR reception ready, receive start, transmit/receive normal completion, and receive completion with an error interrupts.
Bit 7 Bit Name RxRDYE Initial Value 0 R/W R/W Description Receive Data Ready Interrupt Enable Enables/disables a receive data ready interrupt. 0: Disables a receive data ready (RxRDY) interrupt 1: Enables a receive data ready (RxRDY) interrupt 6 to 3 2 RxSE All 0 0 R/W Reserved These bits are always read as 0 and cannot be modified. Receive Start Interrupt Enable Enables/disables a receive start (RxS) interrupt. 0: Disables a receive start (RxS) interrupt 1: Enables a receive start (RxS) interrupt 1 RxFE 0 R/W Receive Normal Completion Enable Enables or disables a receive normal completion (RxF) interrupt. 0: Disables a receive normal completion (RxF) interrupt 1: Enables a receive normal completion (RxF) interrupt 0 RxEE 0 R/W Receive Error Termination Interrupt Enable Enables or disables a receive error termination (RxE) interrupt. 0: Disables a receive error termination (RxE) interrupt 1: Enables a receive error termination (RxE) interrupt
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.3.23 IEBus Receive Error Flag Register (IEREF) IEREF checks the source of an RxE interrupt indicated in IERSR. This register detects an overrun error, timing error, overflow of a maximum number of bytes in one frame, and parity error. These flags become valid when the receive start flag (RxS) is set to 1. If an error occurs before the RxS flag is set to 1, the IEB terminates the communications and enters the wait state. In this case, these flags will not be set and the RxE flag is not set.
Bit Bit Name Initial Value All 0 0 R/W R/W Description Reserved These bits are always read as 0 and cannot be modified. 3 OVE Overrun Control Flag Used to control the overrun during data reception. The IEB sets the OVE and RxE flags when the IEB receives the next byte data while the receive data has not been read (the RxRDY flag is not cleared) and when the parity bit reception has been started. If this flag remains set until acknowledge bit transfer, the IEB assumes that an overrun error has occurred and returns a NAK to the communications destination unit. The communications destination unit retransmits data up to the maximum number of transmit bytes. The IEB, however, returns a NAK when this flag remains set because the IEB assumes that the overrun error has not been cleared. If this flag is cleared to 0, the IEB decides that the overrun error has been cleared, returns an ACK, and receives the next data. In broadcast reception, if this flag is set during acknowledge bit transmission, the IEB immediately enters the wait state. [Setting condition] * When the next byte data is received while the RxRDY flag is not cleared and when the parity bit of the data is received. When writing 0 after reading OVE = 1
7 to 4
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 2
Bit Name RTME
Initial Value 0
R/W R/W
Description Timing Error Set to 1 if data is not received at the timing specified by the IEBus protocol during data reception. The IEB sets the RxE flag and enters the wait state. [Setting condition] * * When a timing error occurs during data reception When writing 0 after reading RTME = 1 [Clearing condition]
1
DLE
0
R/W
Overflow of Maximum Number of Receive Bytes in One Frame Indicates that the maximum number of bytes defined by communications mode have been received because a parity error or overrun error occurred, or that the reception has not be completed because the message length value exceeds the maximum number of receive bytes in one frame. The IEB sets the RxE flag and enters the wait state. [Setting condition] * When the reception has not been completed although the maximum number of bytes defined by communications mode have been received. When writing 0 after reading DLE = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Bit 0
Bit Name PE
Initial Value 0
R/W R/W
Description Parity Error Indicates that a parity error has occurred during data field reception. If a parity error occurs before data field reception, the IEB immediately enters the wait state and the PE flag is not set. If a parity error occurs when the maximum number of receive bytes in one frame has not been received, the PE flag is not set. When a parity error occurs, the IEB returns a NAK to the communications destination unit via the acknowledge bit. In this case, the communications destination unit continues retransfer up to the maximum number of receive bytes in one frame and if the reception has been completed normally by clearing the parity error, the PE flag is not set. If the parity error is not cleared when the reception is terminated before receiving data for the number of bytes specified by the message length, the PE flag is set. In broadcast reception, if a parity error occurs during data field reception, the IEB enters the wait state immediately after setting the PE flag. [Setting condition] * When the parity bit of last data of the data field is not correct after the maximum number of receive bytes has been received When writing 0 after reading PE = 1
[Clearing condition] *
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.4
17.4.1
Operation Descriptions
Master Transmit Operation
This section describes an example of master transmission using the DTC after slave reception. (1) IEB Initialization
(a) Setting the IEBus Control Register (IECTR) Enable the IEBus pins, select the signal polarity, and select a clock supplied to the IEB. Clear the LUEE bit to 0 since the transfer is performed by the DTC. (b) Setting the IEBus Master Unit Address Registers 1 and 2 (IEAR1 and IEAR2) Specify the master unit address and specify the communications mode in IEAR1. (c) Setting the IEBus Slave Address Setting Registers 1 and 2 (IESA1 and IESA2) Specify the communications destination slave unit address. (d) Setting the IEBus Master Control register (IEMCR) Select broadcast/normal communications, specify the number of retransfer counts at arbitration loss, and specify the control bits. (e) Setting the IEBus Transmit Message Length Register (IETBFL) Specify the message length bits. (f) Setting the IEBus Transmit/Runaway Interrupt Enable Register (IEIET) Enable TxRDY (IETxI), TxS, TxF, and TxE (IETSI) interrupts. The above registers can be specified in any order. (The register specification order does not affect the IEB operation.) (2) DTC Initialization
1. Set the start address of the RAM which stores the register information necessary for the DTC transfer in the vector address (H'000004D4) to be accessed when a DTC transfer request is generated. 2. Set the following data from the start address of the RAM. Transfer source address (SAR): Start address of the RAM which stores data to be transmitted in the data field. Transfer destination address (DAR): Address (H'FFF808) of the IEBus transmit buffer register (IETBR) Transfer count (CRA): The same value as the IETBFL contents
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
3. Set DTCEG5 in the DTC enable register G (DTCERG) to enable the TxRDY interrupt (IETxI). Because the TxRDY flag is retained after a reset, the DTC transfer starts when the IETxI is enabled and the first data for the data field is written to IETBR. The DTC negates the TxRDY flag and the first byte of DTC transfer is completed. (3) Master Transmission Flow
Figure 17.8 shows the master transmission flow. Numbers in the following description correspond to the number in figure 17.8. 1. After the IEB and DTC have been initialized, a master communications request command is issued from IECMR. During slave reception, the command execution status flag (CMX) in IEFLG is set and the master communications request will not be issued. 2. When the slave reception has been completed, the CMX flag is cleared, the master communications command is executed, and the MRQ flag is set. 3. The transmit start detection flag (TxS) in IETSR is set when arbitration is won and the master address has been transmitted. In this case, one of the transmit status interrupts (IETSI) is requested to the CPU, and the TxS flag is cleared in the interrupt handling routine. 4. The IEB loads data to be transmitted in the data field from IETBR when the control and message length fields have been transmitted and an ACK is received in each field. After that, the TxRDY flag is set. A DTC transfer request is generated by IETxI and the second byte is written to the transmit buffer. 5. Similarly, the data field load and transmission are repeated. 6. The DTC completes the data transfer for the number of specified bytes when data to be transmitted in the last byte is written to. At this time, the DTC does not clear the TxRDY flag. It, however, clears bit DTCEG5 in the DTC enable register G (DTCERG) so as not to generate more DTC transfer request. 7. A TxRDY interrupt (IETxI) is issued to the CPU when the DTC transfer is completed. In this interrupt handling routine, the TxRDY flag can be cleared. However, since a TxRDY interrupt will be generated again after the last byte transfer, the TxRDY flag remains set. (Note that the LUEE bit must be cleared to 0 because an underrun error occurs to terminate the transfer if the LUEE bit in IECTR is set to 1.) Note, however, that the TxRDY interrupt must be disabled because the TxRDY interrupt is always generated. 8. A transmit normal completion (TxF) interrupt (IETSI) occurs after the last data transfer is completed. In this case, the CPU clears the TxF flag and completes the normal completion interrupt and clears the MRQ flag to 0. Note: As a transmit status interrupt (IETSI), the transmit error termination (TxE) interrupt as well as the transfer start detection (TxS) and transmit normal completion (TxF) interrupts
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
must be enabled. If an error termination interrupt is disabled, no interrupt is generated even if the transmission is terminated by an error.
H: Header, MA: Master address field, SA: Slave address field, CF: Control field, LF: Message length field, D1, D2,..., Dn-1, Dn: Data field Slave reception LF IECMR
Master transmission request
Master transmission Dn H MA SA CF LF D1 D2 Dn-1 Dn
Dn-1
IEFLG
CMX MRQ SRQ SRE
(1)
(2) (2)
IETSR
TxRDY Cleared to 0 byt DTC transfer of 1st byte TxS TxF
DTC transfer of 2nd byte
(4)
(5)
DTC transfer of 3rd byte
(6)
DTC transfer of nth byte
(3) (8)
Interrupt
IETxI (TxRDY) (TO DTC) IETxI (TxRDY) (TO CPU) IETSI (TO CPU)
(4)
(5)
(6) (7)
(3)
(8)
Figure 17.8 Master Transmit Operation Timing 17.4.2 Slave Receive Operation
This section describes an example of performing a slave reception using the DTC. (1) IEB Initialization
(a) Setting the IEBus Control Register (IECTR) Enable the IEBus pins, select the signal polarity, and select a clock supplied to the IEB. Set the RE bit to 1 to perform reception. The LUEE bit does not need to be specified. (b) Setting the IEBus Master Unit Address Registers 1 and 2 (IEAR1 and IEAR2)
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Specify the master unit address and specify the communications mode in IEAR1. Compare with the slave address in the communications frame and receive the frame if matched. (c) Setting the IEBus Receive Interrupt Enable Register (IEIER) Enable RxRDY (IERxI), RxS, and RxE (IERSI) interrupts. The above registers can be specified in any order. (The register specification order does not affect the IEB operation.) (2) DTC Initialization
1. Set the start address of the RAM which stores the register information necessary for the DTC transfer in the vector address (H'000004D2) to be accessed when a DTC transfer request is generated. 2. Specify the following from the start address of the RAM. Transfer source address (SAR): Address (H'FFF80D) of the IEBus receive buffer register (IERBR). Transfer destination address (DAR): Start address of the RAM which stores data received from the data field. Transfer count (CRA): Maximum number of transfer bytes in one frame in the transfer mode. 3. Set DTCEG6 in the DTC enabler register G (DTCERG) to enable the RxRDY interrupt (IETxI). Because the above settings are performed before the frame reception, the length of data to be received cannot be decided. Accordingly, the maximum number of transfer bytes in one frame is specified as the DTC transfer count. If the DTC is specified after reception starts, the above settings are performed in the receive start (RxS) interrupt handling routine. In this case, the transfer count must be the same value as the contents of the IEBus receive message length register (IERBFL). (3) Slave Reception Flow
Figure 17.9 shows the slave reception flow. Numbers in the following description correspond to the number in Figure 17.9. In this example, the DTC is specified when the frame reception starts. 1. After the broadcast reception has been completed, the slave reception is performed. The receive broadcast bit status flag (RSS) in IEFLG retains the previous frame information (set to 1) until the receive start detection flag (RxS) is set to 1. If the RSS flag changes at the timing of header reception, the interrupt handling of the broadcast reception completion must be
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
2.
3.
4. 5.
6. 7.
completed before the header reception. Accordingly, the RSS flag is stipulated that it changes at the timing of starting reception. If data is received up to the message length field, a receive start detection (RxS) interrupt (receive status interrupt (IERSI)) will occur and the SRE flag is set to 1. In this case, the DTC initialization described in (2) is performed. After initialization, the RxS flag is cleared to 0. When the first data is received, the RxRDY flag is set to 1. A DTC transfer request by IERxI occurs, and the DTC loads data from the IEBus receive buffer register (IERBR) and clears the RxRDY flag. Similarly, the data field reception and load are repeated. When the last data is received, the DTC completes the data transfer for the specified number of bytes after loading the receive data to the RAM. In this case, the DTC does not clear the RxRDY flag. It, however, clears the DTC enable register G (DTCEG). Accordingly, hereafter, no transfer request will be issued to the DTC. When the DTC transfer has been completed, an RxRDY interrupt (IERxI) is issued to the CPU. In this interrupt handling routine, the RxRDY flag is cleared. When the last data is received, a receive normal completion (RxF) interrupt (IERSI) occurs. In this case, the CPU clears the RxF flag in order to complete the normal completion interrupt. The SRE flag is cleared to 0.
Notes: 1. As a receive status interrupt (IERSI), the receive error termination (RxE) interrupt as well as the receive start detection (RxS) and receive normal completion (RxF) interrupts must be enabled. If an error termination interrupt is disabled, no interrupt is generated even if the reception is terminated by an error. 2. The interrupt occurs after the DTC transfer has been completed. Accordingly, the interrupt described in item 6 actually occurs after item 7 above.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
H: Header, MA: Master address field, SA: Slave address field, CF: Control field, LF: Message length field, D1, D2,..., Dn-1, Dn: Data field Broadcast reception Dn IECTR
RE
Slave reception H MA SA CF LF D1 D2 Dn-1 Dn
IEFLG
RSS
(1)
IEFLG
CMX MRQ SRQ SRE
(7) (5)
DTC transfer DTC transfer DTC transfer DTC transfer of 1st byte of (n-2)th byte of (n-1)th byte of nth byte
IERSR
RxRDY RxS RxF
(3)
(4)
(2) (7)
Interrupt
IERxI (RxRDY) (TO DTC) IERxI (RxRDY) (TO CPU) IERSI (TO CPU)
(3)
(4)
(5) (6)
(2)
(7)
Figure 17.9 Slave Reception Operation Timing
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(4)
When an Error Occurs in Broadcast Reception (DEE = 1)
Figure 17.10 shows an example in which a receive error occurs because the receive preparation cannot be completed (the RxRDY flag is not cleared) until the control field is received in broadcast reception after the slave reception while the DEE bit is set to 1. Note: The same as the case in which the RE bit is not set before the control field reception.
H: Header, MA: Master address field, SA: Slave address field, CF: Control field, LF: Message length field, D1, D2,..., Dn-1, Dn: Data field Slave reception Dn IECTR
RE, DEE
Broadcast reception H MA SA CF LF D1 D2 Dn-1 Dn
Broadcast reception is performed while the DEE bit is set to 1.
IEFLG
RSS
IEFLG
CMX MRQ SRQ SRE
IERSR
RxRDY RxS RxF RxE
The RxRDY flag has not been cleared when the control field is received.
Set the RxE flag and the master unit address in IEAR1 and IEAR2.
IEMA1 IEMA2 Lower 4 bits of the master address Upper 8 bits of the master address
Figure 17.10 Error Occurrence in the Broadcast Reception (DEE = 1)
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.4.3
Master Reception
This section shows an example of performing a master reception using the DTC after slave reception. (1) IEB Initialization
(a) Setting the IEBus Control Register (IECTR) Enable the IEBus pins, select the signal polarity, and select a clock supplied to the IEB. Set the RE bit to 1 to perform reception. The LUEE bit does not need to be specified. (b) Setting the IEBus Master Unit Address Registers 1 and 2 (IEAR1 and IEAR2) Specify the master unit address and specify the communications mode in IEAR1. Compare with the slave address in the communications frame and receive the frame if matched. (c) Setting the IEBus Slave Address Setting Registers 1 and 2 (IESA1 and IESA2) Specify the communications destination slave unit address. (d) Setting the IEBus Master Control Register (IEMCR) Select broadcast/normal communications, specify the number of retransfer counts at arbitration loss, and specify the control bits. (e) Setting the IEBus Receive Interrupt Enable Register (IEIER) Enable the RxRDY (IERxI), RxS, RxF, and RxE (IERSI) interrupts. The above registers can be specified in any order. (The register specification order does not affect the IEB operation.) (2) DTC Initialization
1. Set the start address of the RAM which stores the register information necessary for the DTC transfer in the vector address (H'000004D2) to be accessed when a DTC transfer request is generated. 2. Set the following data from the start address of the RAM. Transfer source address (SAR): Address (H'FFF80D) of the IEBus receive buffer register (IERBR). Transfer destination address (DAR): Start address of the RAM which stores data to be received from the data field. Transfer count (CRA): Maximum number of transfer bytes in one frame in the transfer mode. 3. Set bit DTCEG6 in the DTC enabler register G (DTCERG), and enable the RxRDY interrupt (IERxI).
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
Because the above settings are performed before frame reception, the length of data to be received cannot be determined. Accordingly, the maximum number of transfer bytes in one frame is specified as the DTC transfer count. If the DTC is specified after reception starts, the above settings are performed in the receive start detection (RxS) interrupt handling routine. In this case, the transfer count must be the same value as the contents of the IEBus receive message length register (IERBFL). (3) Master Reception Flow
Figure 17.11 shows the master reception flow. Numbers in the following description correspond to the number in figure 17.11. In this example, the DTC is specified when the frame reception starts. 1. After the IEB has been initialized, a master communications request command is issued from IECMR. During slave reception, the command execution status flag (CMX) in IEFLG is set and the master communications request will not be issued. 2. The CMX flag is cleared when the slave reception is completed, the master communications command is executed, and the MRQ flag is set. 3. If the arbitration is won, the master address, slave address, and control field will be transmitted. An error generated before the control field transmission will be handled as a transmission error. In this case, the TxE flag is set and the error contents will be reflected in IETEF. 4. The message length field is received from the slave unit. If no parity error is detected and reception is performed correctly, the receive start detection flag (RxS) is set to 1. If a parity error occurs, it is handled as a receive error. A receive start detection (RxS) interrupt (receive status interrupt (IERSI)) occurs and the DTC initialization described in (2) is performed. After DTC initialization, the RxS flag is cleared to 0. 5. When the first data is received, the RxRDY flag is set to 1. A DTC transfer request by IERxI occurs and the DTC loads data from the IEBus receive buffer register (IERBR) and clears the RxRDY flag. 6. Similarly, the above data field receive and load operations are repeated. 7. When the last data is received, the DTC completes the data transfer for the specified number of bytes after loading the receive data to the RAM. In this case, the DTC does not clear the RxRDY flag. It, however, clears the DTC enable register G (DTCEG). Accordingly, hereafter, no transfer request will be issued to the DTC. 8. When the DTC transfer has been completed, an RxRDY interrupt (IERxI) is issued to the CPU. In this interrupt handling routine, the RxRDY flag is cleared.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
9. When the last data is received, a receive normal completion (RxF) interrupt (IERSI) occurs. In this case, the CPU clears the RxF flag to complete the receive normal completion interrupt. The MRQ flag is cleared to 0. Notes: 1. As a receive status interrupt (IERSI), an receive error completion (RxE) interrupt as well as the receive start detection (RxS) and receive normal completion (RxF) interrupts must be enabled. If a receive error completion interrupt is disabled, no interrupt is generated even if the reception is terminated by an error. 2. The interrupt occurs after the DTC transfer has been completed. Accordingly, the interrupt described in item 8 actually occurs after item 9 above.
H: Header, MA: Master address field, SA: Slave address field, CF: Control field, LF: Message length field, D1, D2,..., Dn-1, Dn: Data field Slave reception Dn IECTR
RE
Master reception H MA SA CF (3) LF D1 D2 Dn-1 Dn
IECMR
Master reception request
IEFLG
CMX MRQ SRQ SRE
(1)
(2)
(2)
(9)
IERSR
RxRDY RxS RxF
DTC transfer DTC transfer DTC transfer DTC transfer of 1st byte of (n-2)th byte of (n-1)th byte of nth byte
(5)
(6)
(7)
(4) (9)
Interrupt
IERxI (RxRDY) (TO DTC) IERxI (RxRDY) (TO CPU) IERSI (TO CPU)
(5)
(6)
(7) (8)
(4)
(9)
Figure 17.11 Master Receive Operation Timing
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.4.4
Slave Transmission
This section shows an example of performing a slave transmission using the DTC after slave reception. (1) IEB Initialization
(a) Setting the IEBus Control Register (IECTR) Enable the IEBus pins, select the signal polarity, and select a clock supplied to the IEB. Clear the LUEE bit to 0 because transfer by the DTC is performed. (b) Setting the IEBus Master Unit Address Registers 1 and 2 (IEAR1 and IEAR2) Specify the master unit address and specify the communications mode in IEAR1. Compare with the slave address in the communications frame and receive the frame if matched. (c) Setting the IEBus Transmit Message Length Register (IETBFL) Specify the message length bits. (d) Setting the IEBus Transmit/Runaway Interrupt Enable Register (IEIET) Enable the TxRDY (IETxI), TxS, and TxE (IETSI) interrupts. The above registers can be specified in any order. (The register specification order does not affect the IEB operation.) (2) DTC Initialization
1. Set the start address of the RAM which stores the register information necessary for the DTC transfer in the vector address (H'000004D4) to be accessed a DTC transfer request is generated. 2. Set the following data from the start address of the RAM. Transfer source address (SAR): Start address of the RAM which stores data to be transmitted from the data field. Transfer destination address (DAR): Address (H'FFF808) of the IEBus transmit buffer register (IETBR) Transfer count (CRA): The same value as IETBFL 3. Set bit DTCEG5 in the DTC enabler register G (DTCERG), and enable the TxRDY interrupt (IETxI). Because the TxRDY flag is retained after reset, the DTC transfer is executed when the IETxI is enabled and the first data field data is written to IETBR. The DTC negates the TxRDY flag and the DTC transfer of the first byte is completed.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(3)
Slave Transmission Flow
Figure 17.12 shows the slave transmission flow. Numbers in the following description correspond to the numbers in Figure 17.12. 1. After the IEB and DTC have been initialized, a slave communications request command is issued from IECMR. During slave reception, the command execution status flag (CMX) in IEFLG is set and the slave communications request will not be issued. 2. The CMX flag is cleared when the slave reception is completed, the slave communications command is executed, and the SRQ flag is set. 3. If data up to the control field has been received correctly and if the contents of the control bits is H'3 or H'7, the transmit start detection flag (TxS) in IETSR register is set to 1. In this case, the TxS flag is cleared in the TxS interrupt handling routine. 4. The slave then transmits the message length field, and the IEB loads the transmit data in the data field from IETBR when the ACK is received. Then the TxRDY flag is set to 1. A DTC transfer request by IETxI is generated and the second byte data is written to the transmit buffer. 5. Similarly, the above data field load and transmission operations are repeated. 6. The DTC completes the data transfer for the number of specified bytes when data to be transmitted in the last byte is written to. At this time, the DTC does not clear the TxRDY flag. It, however, clears bit DTCEG5 in the DTC enable register G (DTCERG) not to generate more DTC transfer request. 7. A TxRDY interrupt (IETxI) is issued to the CPU when the DTC transfer is completed. In this interrupt handling routine, the TxRDY flag can be cleared. However, since the TxRDY interrupt will be generated again after the last byte transfer, the TxRDY flag remains set. (Note that the LUEE bit should be cleared to 0 because an underrun error occurs to terminate the transfer if the LUEE bit in IECTR is set to 1.) Note, however, that the TxRDY interrupt should be disabled because the TxRDY interrupt is always generated. 8. After the last data transfer has been completed, a transmit normal completion (TxF) interrupt occurs. In this case, the CPU clears the TxF flag and completes the normal completion interrupt and clears the SRQ flag to 0. Notes: 1. As a transmit status interrupt (IETSI), a transmit error termination (TxE) interrupt as well as the transmit start detection (TxS) and transmit normal completion (TxF) interrupts must be enabled. If a transmit error completion interrupt is disabled, no interrupt is generated even if the transfer is terminated by an error. 2. If the control bits sent from the master unit is H'0, H'4, H'5, or H'6 in slave transmission, the IEB automatically performs processing and the TxS and TxF flags are not set.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
H: Header, MA: Master address field, SA: Slave address field, CF: Control field, LF: Message length field, D1, D2,..., Dn-1, Dn: Data field Slave reception LF IECMR
Slave transmission request
Slave transmission Dn H MA SA CF LF D1 D2 Dn-1 Dn
Dn-1
IEFLG
CMX MRQ SRQ SRE
(1)
(2)
(2)
(8)
IETSR
TxRDY Cleared to 0 byt DTC transfer of 1st byte TxS TxF
DTC transfer of 2nd byte
DTC transfer of 3rd byte
DTC transfer of nth byte
(4) (3)
(5)
(6)
(8)
Interrupt
IETxI (TxRDY) (TO DTC) IETxI (TxRDY) (TO CPU) IETSI (TO CPU)
(4)
(5)
(6) (7)
(3)
(8)
Figure 17.12 Slave Transmit Operation Timing
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.5
Interrupt Sources
Figures 17.13 and 17.14 show the transmit and receive interrupt sources, respectively.
IETSR IETxI (TxRDY interrupt) DTC IRA IRAE TxS CPU IETSI (Transmit status interrupt) TxSE IETEF TxF TxFE (*) TxE TxEE TTME RO ACK Note: * The TxE flag is set at the timing when an error source of IETEF occurs. The TxE flag can be cleared even when the error source flag in IETEF is set to 1 because the TxE flag is not logically ORed with flags in IETEF. AL UE TxRDY TxRDYE IEIET
Figure 17.13 Relationships among Transfer Interrupt Sources
IERSR IERxI (RxRDY interrupt) DTC RxRDY RxRDYE IEIER
RxS RxSE IEREF CPU IERSI (Transmit status interrupt) RxF RxFE (*) RxE RxEE DLE PE Note: * The RxE flag is set at the timing when an error source of IEREF occurs. The RxE flag can be cleared even when the error source flag in IEREF is set to 1 because the RxE flag is not logically ORed with flags in IEREF. OVE RTME
Figure 17.14 Relationships among Receive Interrupt Sources
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.6
17.6.1
Usage Notes
Setting Module Stop Mode
The IEB is enabled or disabled by setting the module stop control register. In the initial state, the IEB is disabled. After the module stop mode is canceled, registers can be accessed. For details, see section 22, Power-Down Modes. 17.6.2 TxRDY Flag and Underrun Error
1. The TxRDY flag indicates that IETBR is empty. Writing to IETBR by the DTC clears the TxRDY flag. Meanwhile, the TxRDY flag must be cleared by software since writing to IETBR by the CPU does not clear the TxRDY flag. 2. If the CPU fails to write to IETBR by the timing of the frame transmission or if the number of transfer words is less than the length specified by the message length bits, an underrun error occurs. 3. The IEB decides that an underrun error occurred when the data is loaded from IETBR to the transmit shift register while the TxRDY flag is set to 1. In this case, the IEB sets the TxE flag in IETSR and enters the wait state. The UE flag in IETEF is also set to 1. 4. On the receive side, the unit decides that a timing error has occurred because the communications are terminated. 5. In data transfer using the DTC, the TxRDY flag in IETSR is not cleared after the last byte data is transferred to IETBR and a CPU interrupt caused by the DTC interrupt will occur. If the TxRDY flag is not cleared in this CPU interrupt handling routine, an underrun error will occur when the last byte data is loaded from IETBR to the transmit shift register. In this case, if the LUEE bit is cleared to 0 (initial value), no underrun error occurs and the last byte of the data field is transmitted correctly. (if the LUEE bit is set to 1, an underrun error occurs.) 6. Although the DTC is used as described in item 5, if the number of DTC transfer words is less than the length specified by the message length bits, the LUEE bit setting is invalid. (The LUEE bit is valid only when data is transmitted for the number of bytes specified by the message length bits has been transmitted.) In this case, an underrun error occurs, data is transmitted for one byte less than the DTC transfer words, and the transfer is terminated by a transmit error.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.6.3
RxRDY Flag and Overrun Error
1. The RxRDY flag indicates that IERBR stores data. Reading from IERBR by the DTC clears the RxRDY flag. Meanwhile, the RxRDY flag must be cleared by software since reading from IERBR by the CPU does not clear the RxRDY flag. 2. If the CPU fails to read from IERBR by the timing of the frame reception or if the number of transfer words is less than the length specified by the message length bits, an overrun error occurs. 3. The IEB receives data while the RxRDY flag is set and sets the OVE flag when the parity bit reception starts. If the OVE flag is set when the acknowledge bit is transmitted, the IEB assumes that an overrun error has occurred, returns a NAK, and discards the data in the receive shift register. 4. On the transmit side, the unit continues retransfer until an ACK is received because it receives a NAK. 5. If the OVE flag is cleared without loading the receive data from IERBR in the RxE interrupt handling routine caused when the OVE flag is set to 1, the IEB decides that the overrun error has been cleared and sends an ACK to other units. In this case, the transmit unit completes the communications correctly. However, no receive data is loaded from the IERBR and the receive unit continues reception. Accordingly, in an interrupt handling routine caused by the OVE flag, receive data must be loaded from IERBR, the RxRDY flag must be cleared. The DTC, thus, should be ready to receive the next byte, and then the OVE flag must be cleared. 6. Item 5 above will not occur when the DTC transfer words is specified as the IERBFL value. 17.6.4 (1) Error Flag s in the IETEF
AL Flag
The AL Flag is set to 1 when arbitration is lost even if retransfer is performed for the number of times specified by IEMCR after arbitration has been lost. The AL flag is not set when arbitration is won during retransfer. If the AL flag is set to 1, the TxE flag is set and the wait state is entered. (2) UE Flag
If the UE flag is set to 1, the TxE flag is set and the wait state is entered. For details, see section 17.6.2, TxRDY Flag and Underrun Error. (3) TTME Flag
If a timing error occurs during data transfer, the TTME and TxE flags are set, and the wait state is entered.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(4)
RO Flag
When retransfer is performed up to the maximum number of transfer bytes defined by the protocol because of reception of a NAK from the receive side during data field transmission, the number of transferred bytes may be less than that of bytes specified by the message length. At this time the RO flag is set. Moreover, when the value of the message length bits is greater than the maximum number of transfer bytes, the RO flag is also set. The RO flag is not set if the maximum number of transfer bytes defined by the protocol is specified (for example, 32-byte message length is specified in mode 1) and the transfer is performed correctly. If the RO flag is set to 1, the TxE flag is set to 1 and the wait state is entered. (5) ACK Flag
* If a NAK is received in an acknowledge bit before the message length field transmission, the ACK flag is set, the TxE flag is set, and then the wait state is entered. * If a NAK is received in an acknowledge bit of the data field, data is automatically retransmitted up to the maximum number of transfer bytes defined by the protocol. If an ACK is received in an acknowledge bit during retransfer and the following data is transmitted correctly, the ACK flag is not set. If a NAK is received in the last data transfer during the retransfer for the maximum number of transfer bytes, the ACK flag is set to 1 and the wait state is entered. Note: Even if a NAK is received from the receive side during the data field transmission, retransfer is performed up to the maximum number of transfer bytes defined by the protocol, and the number of transferred bytes is less than that of bytes specified by the message length bits, an ACK may be received in the acknowledge bit in the last data transfer. In this case, the ACK flag is not set although the RO flag is set. 17.6.5 (1) Error Flags in IEREF
OVE Flag
When the OVE flag is set, the RxE flag is also set. If an overrun error is cleared and the OVE flag is also cleared, the IEBus receive operation is continued. For details, see section 17.6.3, RxRDY Flag and Overrun Error. (2) RTME Flag
If a timing error occurs during data reception after reception starts (the RxS flag is set to 1), the RTME flag is set to 1, RxE flag is set to 1, and the wait state is entered. When a timing error occurs before reception starts, this flag is not set and the reception frame is discarded.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
(3)
DLE Flag
When retransfer is performed up to the maximum number of transfer bytes defined by the protocol because of reception of a NAK caused by a parity or an overrun error during data field reception, the number of transferred bytes may be greater than that of bytes specified by the message length. At this time the DLE flag is set. Moreover, when the value of the message length bits is greater than the maximum number of transfer bytes, the DLE flag is also set. The DLE flag is not set if the maximum number of transfer bytes defined by the protocol is specified and the transfer is performed correctly. If the DLE flag is set to 1, the RxE flag is set to 1 and the wait state is entered. (4) PE Flag
If a parity error occurs after reception starts (the RxS flag is set to 1), a NAK is sent to perform rereception. If a parity error is not cleared when the maximum number of transfer bytes specified by the protocol is received, the PE flag is set to 1, the RxE flag is set to 1 and the wait state is entered. If a parity error is cleared during the rereception and if the following data is received correctly, the PE flag is not set. Notes: 1. If the reception is performed up to the maximum number of transfer bytes defined by the protocol because of a parity or an overrun error during data field reception, the number of receive bytes is less than that of bytes specified by the message length bits, no parity error or overrun error may occur at the last byte reception. In this case, the DLE flag is set. However, the OVE and PE flags are not set. 2. The flags in IEREF are set after reception starts. Accordingly, the RxE flag is valid and set after the RxS flag has been set. If an error occurs before reception starts, the frame is discarded and no interrupt occurs. 17.6.6 Notes on Slave Transmission
When the slave unit transmits the slave status and upper and lower locked addresses, a parity or an overrun error occurs in the master reception side and the data cannot be received. Accordingly, even if a NAK is returned, the slave unit is not capable of retransfer. In this case, the master unit must discard the frame in which an error occurred and request the above operation in the master reception to receive the correct frame.
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.6.7
Notes on DTC Specification
When transmit or receive data is transferred by the DTC, bit 5 (for transmission) or bit 6 (for reception) in DTCERG must be set by the bit manipulation instruction (such as BSET or BCLR). In this case, other bits (bits 7 and 4 to 0) in DTCERG must not be set to 1. 17.6.8 Error Handling in Transmission
Figure 17.15 shows the operation when a timing error occurs. When a timing error occurs in data transmission (1), there is a possibility that the next data is already transferred to the transmit buffer by the DTC and the TxRDY flag that is the DTC initiation source is already cleared to 0 (2). In this case, if retransfer is performed, data remained in the transmit buffer (previous frame data ) is transmitted as the first byte data of the data field (3). To avoid this error, in master transmission, the first byte data in the data field should be written to the transmit buffer by software instead of using the DTC. After that, data can be transferred by the DTC. In this case, the SAR (transfer source address) and CRA (transfer counter) should be specified as follows. * An address of the on-chip memory that stores the second byte data SAR * The number of bytes specified by message length -1 CRA
Transmit error frame S IETSR TxRDY IETEF TTME MA SA CF LF D1 S MA Retransfer frame (3) SA CF LF D2 D1
1st byte data transferred by DTC 2nd byte data transferred by DTC 1st byte data transferred by DTC
Timing error
(2) (1) Legend: S: Start bit, broadcast bit MA: Master address field SA: Slave address field CF: Control field LF: Message length field D1, D2, ...Dn-1, Dn: Data field
Figure 17.15 Error Processing in Transfer
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Section 17 IEBusTM Controller (IEB) [H8S/2552 Group]
17.6.9
Power-Down Mode Operation
The IEB stops operation and is initialized in power-down modes such as module stop, watch, software standby and hardware standby modes. To initialize the IEB, the module stop mode must be specified. To reduce power consumption during IEB operation, the sleep mode must be used. 17.6.10 Notes on Middle-Speed Mode In middle-speed mode, the IEB registers must not be read from or written to. 17.6.11 Notes on Register Access The IEB registers can be accessed in bytes. The IEB registers must not be accessed in words or longwords.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
The HCAN controls a controller area network (CAN) for realtime communication in vehicular and industrial equipment systems, etc. For details on CAN specification, refer to Bosch CAN Specification Version 2.0 1991, Robert Bosch GmbH. The block diagram of the HCAN is shown in figure 18.1.
18.1
Features
* CAN version: Conforming to Bosch 2.0B active Communication systems: NRZ (Non-Return to Zero) system (with bit-stuffing function) Broadcast communication system Transmission path: Bidirectional 2-wire serial communication Communication speed: Max. 1 Mbps Data length: 0 to 8 bytes * Number of channels: 1 * Data buffers: 16 (one receive-only buffer and 15 buffers settable for transmission/reception) * Data transmission: Two methods Mailbox (buffer) number order (low-to-high) Message priority (identifier) reverse-order (high-to-low) * Data reception: Two methods Message identifier match (transmit/receive-setting buffers) Reception with message identifier masked (receive-only) * CPU interrupts: 12 Error interrupt Reset processing interrupt Message reception interrupt Message transmission interrupt * HCAN operating modes * Support for various modes Hardware reset Software reset Normal status (error-active, error-passive)
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bus off status HCAN configuration mode HCAN sleep mode HCAN halt mode * Module stop mode can be set * DTC can be activated by the reception of a message (only in HCAN mailbox 0)
Peripheral address bus
HCAN MBI Message buffer
Peripheral data bus
Mailboxes Message control Message data MC0 to MC15, MD0 to MD15
LAFM
(CDLC) CAN Data Link Controller Bosch CAN 2.0B active HTxD
Tx buffer
MPI Microprocessor interface CPU interface Control register Status register
Rx buffer
HRxD
Figure 18.1 HCAN Block Diagram * Message Buffer Interface (MBI) The MBI, consisting of mailboxes and a local acceptance filter mask (LAFM), stores CAN transmit/receive messages (identifiers, data, etc.) Transmit messages are written by the CPU. For receive messages, the data received by the CDLC is stored automatically. * Microprocessor Interface (MPI) The MPI, consisting of a bus interface, control register, status register, etc., controls HCAN internal data, status, and so forth. * CAN Data Link Controller (CDLC) The CDLC transmits and receives of messages conforming to the Bosch CAN Ver. 2.0B active standard (data frames, remote frames, error frames, overload frames, inter-frame spacing), as well as CRC checking, bus arbitration, and other functions.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.2
Input/Output Pins
Table 18.1 shows the HCAN's pins. When using HCAN pins, settings must be made in the HCAN configuration mode (during initialization: MCR0 = 1 and GSR3 = 1). Table 18.1 Pin Configuration
Name HCAN transmit data pin HCAN receive data pin Abbreviation HTxD HRxD Input/Output Output Input Function CAN bus transmission pin CAN bus reception pin
A bus driver is necessary for the interface between the pins and the CAN bus. A Philips PCA82C250 compatible model is recommended.
18.3
Register Descriptions
The HCAN has the following registers. * * * * * * * * * * * * * * * * * Master control register (MCR) General status register (GSR) Bit configuration register (BCR) Mailbox configuration register (MBCR) Transmit wait register (TXPR) Transmit wait cancel register (TXCR) Transmit acknowledge register (TXACK) Abort acknowledge register (ABACK) Receive complete register (RXPR) Remote request register (RFPR) Interrupt register (IRR) Mailbox interrupt mask register (MBIMR) Interrupt mask register (IMR) Receive error counter (REC) Transmit error counter (TEC) Unread message status register (UMSR) Local acceptance filter mask H (LAFMH)
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
* Local acceptance filter mask L (LAFML) * Message control (8-bit x 8 registers x 16 sets) (MC0 to MC15) * Message data (8-bit x 8 registers x 16 sets) (MD0 to MD15) 18.3.1 Master Control Register (MCR)
MCR controls the HCAN.
Bit 7 Bit Name MCR7 Initial Value 0 R/W R/W Description HCAN Sleep Mode Release When this bit is set to 1, the HCAN automatically exits HCAN sleep mode on detection of CAN bus operation. 6 0 R Reserved This bit is always read as 0. The write value should always be 0. 5 MCR5 0 R/W HCAN Sleep Mode When this bit is set to 1, the HCAN transits to HCAN sleep mode. When this bit is cleared to 0, HCAN sleep mode is released. 4, 3 All 0 R Reserved These bits are always read as 0. The write value should always be 0. 2 MCR2 0 R/W Message Transmission Method 0: Transmission order determined by message identifier priority 1: Transmission order determined by mailbox number priority (TXPR1 > TXPR15) 1 MCR1 0 R/W Halt Request When this bit is set to 1, the HCAN transits to HCAN HALT mode. When this bit is cleared to 0, HCAN HALT mode is released.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 0
Bit Name MCR0
Initial Value 1
R/W R/W
Description Reset Request When this bit is set to 1, the HCAN transits to reset mode. For details, see section 18.4.1, Hardware and Software Resets. [Setting conditions] * * * * * * * Power-on reset Hardware standby Software standby Watch mode Module stop mode 1-write (software reset) When 0 is written to this bit while the GSR3 bit in GSR is 1
[Clearing condition]
18.3.2
General Status Register (GSR)
GSR indicates the status of the HCAN.
Bit Bit Name Initial Value All 0 R/W R Description Reserved These bits are always read as 0. The write value should always be 0. 3 GSR3 1 R Reset Status Bit Indicates whether the HCAN module is in the normal operating state or the reset state. This bit cannot be modified. [Setting conditions] * * * When entering configuration mode after the HCAN internal reset has finished Sleep mode When entering normal operation mode after the MCR0 bit in MCR is cleared to 0 (Note that there is a delay between clearing of the MCR0 bit and the GSR3 bit.)
7 to 4
[Clearing condition]
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 2
Bit Name GSR2
Initial Value 1
R/W R
Description Message Transmission Status Flag Flag that indicates whether the module is currently in the message transmission period. This bit cannot be modified. [Setting condition] * * Third bit of Intermission after EOF (End of Frame) Start of message transmission (SOF) [Clearing condition]
1
GSR1
0
R
Transmit/Receive Warning Flag This bit cannot be modified. [Setting condition] When TEC 96 or REC 96 [Clearing conditions] * * When TEC < 96 and REC < 96 When TEC 256 (bus off state)
0
GSR0
0
R
Bus Off Flag This bit cannot be modified. [Setting condition] * * When TEC 256 (bus off state) Recovery from bus off state [Clearing condition]
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.3
Bit Configuration Register (BCR)
BCR is used to set HCAN bit timing parameters and the baud rate prescaler. For details on parameters, see section 18.4.2, Initialization after Hardware Reset.
Bit 15 14 Bit Name BCR7 BCR6 Initial Value 0 0 R/W R/W R/W Description Re-Synchronization Jump Width (SJW) Set the maximum bit synchronization width. 00: 1 time quantum 01: 2 time quanta 10: 3 time quanta 11: 4 time quanta 13 12 11 10 9 8 7 BCR5 BCR4 BCR3 BCR2 BCR1 BCR0 BCR15 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W Baud Rate Prescaler (BRP) Set the length of time quantum. 000000: 2 x system clock 000001: 4 x system clock 000010: 6 x system clock : 111111: 128 x system clock Bit Sample Point (BSP) Sets the point at which data is sampled. 0: Bit sampling at one point (end of time segment 1 (TSEG1)) 1: Bit sampling at three points (end of TSEG1 and preceding and following one time quantum)
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 6 5 4
Bit Name BCR14 BCR13 BCR12
Initial Value 0 0 0
R/W R/W R/W R/W
Description Time Segment 2 (TSEG2) Set the TSEG2 width within a range of 2 to 8 time quanta. 000: Setting prohibited 001: 2 time quanta 010: 3 time quanta 011: 4 time quanta 100: 5 time quanta 101: 6 time quanta 110: 7 time quanta 111: 8 time quanta
3 2 1 0
BCR11 BCR10 BCR9 BCR8
0 0 0 0
R/W R/W R/W R/W
Time Segment 1 (TSEG1) Set the TSEG1 (PRSEG + PHSEG1) width to between 4 and 16 time quanta. 0000: Setting prohibited 0001: Setting prohibited 0010: Setting prohibited 0011: 4 time quanta 0100: 5 time quanta 0101: 6 time quanta 0110: 7 time quanta 0111: 8 time quanta 1000: 9 time quanta 1001: 10 time quanta 1010: 11 time quanta 1011: 12 time quanta 1100: 13 time quanta 1101: 14 time quanta 1110: 15 time quanta 1111: 16 time quanta
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.4
Mailbox Configuration Register (MBCR)
MBCR is used to set the transfer direction for each mailbox.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit Name MBCR7 MBCR6 MBCR5 MBCR4 MBCR3 MBCR2 MBCR1 MBCR15 MBCR14 MBCR13 MBCR12 MBCR11 MBCR10 MBCR9 MBCR8 Initial Value 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R R/W R/W R/W R/W R/W R/W R/W R/W Description These bits set the transfer direction for the corresponding mailboxes from 1 to 15. MBCRn determines the transfer direction for mailbox n (n =1 to 15). 0: Corresponding mailbox is set for transmission 1: Corresponding mailbox is set for reception Bit 8 is reserved. This bit is always read as 1 and the write value should always be 1.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.5
Transmit Wait Register (TXPR)
TXPR is used to set a transmit wait after a transmit message is stored in a mailbox (buffer) (CAN bus arbitration wait).
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit Name TXPR7 TXPR6 TXPR5 TXPR4 TXPR3 TXPR2 TXPR1 TXPR15 TXPR14 TXPR13 TXPR12 TXPR11 TXPR10 TXPR9 TXPR8 Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R R/W R/W R/W R/W R/W R/W R/W R/W Description These bits set a transmit wait (CAN bus arbitration wait) for the corresponding mailboxes 1 to 15. When TXPRn (n = 1 to 15) is set to 1, the message in mailbox n becomes the transmit wait state. [Clearing conditions] * * Completion of message transmission Completion of transmission cancellation
Bit 8 is reserved. This bit is always read as 0 and the write value should always be 0.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.6
Transmit Wait Cancel Register (TXCR)
TXCR controls the cancellation of transmit wait messages in mailboxes (buffers).
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit Name TXCR7 TXCR6 TXCR5 TXCR4 TXCR3 TXCR2 TXCR1 TXCR15 TXCR14 TXCR13 TXCR12 TXCR11 TXCR10 TXCR9 TXCR8 Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R R/W R/W R/W R/W R/W R/W R/W R/W Description These bits cancel the transmit wait message in the corresponding mailboxes 1 to 15. When TXCRn (n = 1 to 15) is set to 1, the transmit wait message in mailbox n is canceled. [Clearing condition] * Completion of TXPR clearing when transmit message is canceled normally
Bit 8 is reserved. This bit is always read as 0 and the write value should always be 0.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.7
Transmit Acknowledge Register (TXACK)
TXACK is a status register that indicates the normal transmission of mailbox (buffer) transmit messages.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: Bit Name TXACK7 TXACK6 TXACK5 TXACK4 TXACK3 TXACK2 TXACK1 TXACK15 TXACK14 TXACK13 TXACK12 TXACK11 TXACK10 TXACK9 TXACK8 * Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* * Description These bits are status flags that indicate error-free transmission of the transmit message in the corresponding mailboxes 1 to 15. When the message in mailbox n (n = 1 to 15) has been transmitted error-free, TXACKn is set to 1. [Setting condition] * Completion of message transmission for corresponding mailbox Writing 1
[Clearing condition] Bit 8 is reserved. This bit is always read as 0 and the write value should always be 0.
Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.8
Abort Acknowledge Register (ABACK)
ABACK is a status register that indicates the normal cancellation (aborting) of mailbox (buffer) transmit messages.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: Bit Name ABACK7 ABACK6 ABACK5 ABACK4 ABACK3 ABACK2 ABACK1 ABACK15 ABACK14 ABACK13 ABACK12 ABACK11 ABACK10 ABACK9 ABACK8 * Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* * Description These bits are status flags that indicate error-free cancellation (abortion) of the transmit message in the corresponding mailboxes 1 to 15. When the message in mailbox n (n = 1 to 15) has been canceled error-free, ABACKn is set to 1. [Setting condition] * Completion of transmit message cancellation for corresponding mailbox Writing 1
[Clearing condition] Bit 8 is reserved. This bit is always read as 0. The write value should always be 0.
Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.9
Receive Complete Register (RXPR)
RXPR is a status register that indicates the normal reception of messages (data frame or remote frame) in mailboxes. For reception of a remote frame, when a bit in this register is set to 1, the corresponding remote request register (RFPR) bit is also set to 1 simultaneously.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: Bit Name RXPR7 RXPR6 RXPR5 RXPR4 RXPR3 RXPR2 RXPR1 RXPR0 RXPR15 RXPR14 RXPR13 RXPR12 RXPR11 RXPR10 RXPR9 RXPR8 * Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* * Description When the message in mailbox n (n = 0 to 15) has been received error-free, RXPRn is set to 1. [Setting condition] * Completion of message (data frame or remote frame) reception in corresponding mailbox Writing 1
[Clearing condition]
Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.10 Remote Request Register (RFPR) RFPR is a status register that indicates normal reception of remote frames in mailboxes (buffers). When a bit in this register is set to 1, the corresponding receive complete register (RXPR) bit is also set to 1 simultaneously.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: Bit Name RFPR7 RFPR6 RFPR5 RFPR4 RFPR3 RFPR2 RFPR1 RFPR0 RFPR15 RFPR14 RFPR13 RFPR12 RFPR11 RFPR10 RFPR9 RFPR8 * Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* Description When mailbox n (n = 0 to 15) has received the remote frame error-free, RFPRn (n = 0 to 15) is set to 1. [Setting condition] * Completion of remote frame reception in corresponding mailbox Writing 1
[Clearing condition] *
Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.11 Interrupt Register (IRR) IRR is an interrupt status flag register.
Bit 15 Bit Name IRR7 Initial Value 0 R/W Description
R/(W)* Overload Frame Recovery Interrupt Flag [Setting condition] * When an overload frame is transmitted in error active/passive state Writing 1
[Clearing condition] * 14 IRR6 0 R/(W)* Bus Off Interrupt Flag Status flag indicating the bus off state caused by the transmit error counter. [Setting condition] * * 13 IRR5 0 When TEC 256 Writing 1 [Clearing condition] R/(W)* Error Passive Interrupt Flag Status flag indicating the error passive state caused by the transmit/receive error counter. [Setting condition] * * 12 IRR4 0 When TEC 128 or REC 128 Writing 1 [Clearing condition] R/(W)* Receive Overload Warning Interrupt Flag Status flag indicating the error warning state caused by the receive error counter. [Setting condition] * * When REC 96 Writing 1 [Clearing condition]
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 11
Bit Name IRR3
Initial Value 0
R/W
Description
R/(W)* Transmit Overload Warning Interrupt Flag Status flag indicating the error warning state caused by the transmit error counter. [Setting condition] * * When TEC 96 Writing 1 [Clearing condition]
10
IRR2
0
R
Remote Frame Request Interrupt Flag Status flag indicating that a remote frame has been received in a mailbox when MBIMR = 0. [Setting condition] * When remote frame reception is completed, when corresponding MBIMR = 0 Clearing of all bits in RFPR (remote request register)
[Clearing condition] * 9 IRR1 0 R Receive Message Interrupt Flag Status flag indicating that a mailbox receive message has been received normally when MBIMR = 0. [Setting condition] * When data frame or remote frame reception is completed, when corresponding MBIMR = 0 Clearing of all bits in RXPR (receive complete register)
[Clearing condition] *
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Bit 8
Bit Name IRR0
Initial Value 1
R/W
Description
R/(W)* Reset Interrupt Flag Status flag indicating that the HCAN module has been reset. This bit cannot be masked by the interrupt mask register (IMR). If this bit is not cleared to 0 after entering power-on reset or returning from software standby mode, watch mode, or module stop mode, interrupt processing will start immediately when the interrupt controller enables interrupts. [Setting condition] * When the reset operation has finished after entering power-on reset or software standby mode, watch mode, or module stop mode. Writing 1
[Clearing condition] * 7 to 5 All 0 Reserved These bits are always read as 0. The write value should always be 0. 4 IRR12 0 R/(W)* Bus Operation Interrupt Flag Status flag indicating detection of a dominant bit due to bus operation when the HCAN module is in HCAN sleep mode. [Setting condition] * Bus operation (dominant bit) detection in HCAN sleep mode Writing 1
[Clearing condition] * 3, 2 All 0 Reserved These bits are always read as 0. The write value should always be 0.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 1
Bit Name IRR9
Initial Value 0
R/W R
Description Unread Interrupt Flag Status flag indicating that a receive message has been overwritten before being read. [Setting condition] * * When UMSR (unread message status register) is set Clearing of all bits in UMSR (unread message status register) [Clearing condition]
0
IRR8
0
R/(W)* Mailbox Empty Interrupt Flag Status flag indicating that the next transmit message can be stored in the mailbox. [Setting condition] * When TXPR (transmit wait register) is cleared by completion of transmission or completion of transmission abort Writing 1
[Clearing condition] * Note: * Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.12 Mailbox Interrupt Mask Register (MBIMR) MBIMR controls the enabling or disabling of individual mailbox interrupt requests.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit Name MBIMR7 MBIMR6 MBIMR5 MBIMR4 MBIMR3 MBIMR2 MBIMR1 MBIMR0 MBIMR15 MBIMR14 MBIMR13 MBIMR12 MBIMR11 MBIMR10 MBIMR9 MBIMR8 Initial Value 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Mailbox Interrupt Mask (MBIMRx) When MBIMRn (n = 0 to 15) is cleared to 0, the interrupt request in mailbox n is enabled. When set to 1, the interrupt request is masked. The interrupt source in a transmit mailbox is TXPR clearing caused by transmission end or transmission cancellation. The interrupt source in a receive mailbox is RXPR setting on reception end.
18.3.13 Interrupt Mask Register (IMR) IMR enables or disables requests by individual interrupt sources of IRR. The interrupt flag cannot be masked.
Bit 15 Bit Name IMR7 Initial Value 1 R/W R/W Description Overload Frame Recovery Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR7) is enabled. When set to 1, OVR0 is masked. 14 IMR6 1 R/W Bus Off Interrupt Mask When this bit is cleared to 0, ERS0 (interrupt request by IRR6) is enabled. When set to 1, ERS0 is masked.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit 13
Bit Name IMR5
Initial Value 1
R/W R/W
Description Error Passive Interrupt Mask When this bit is cleared to 0, ERS0 (interrupt request by IRR5) is enabled. When set to 1, ERS0 is masked.
12
IMR4
1
R/W
Receive Overload Warning Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR4) is enabled. When set to 1, OVR0 is masked.
11
IMR3
1
R/W
Transmit Overload Warning Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR3) is enabled. When set to 1, OVR0 is masked.
10
IMR2
1
R/W
Remote Frame Request Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR2) is enabled. When set to 1, OVR0 is masked.
9
IMR1
1
R/W
Receive Message Interrupt Mask When this bit is cleared to 0, RM1 (interrupt request by IRR1) is enabled. When set to 1, RMI is masked.
8
0
R
Reserved This bit is always read as 0. The write value should always be 0.
7 to 5
All 1
R
Reserved These bits are always read as 1. The write value should always be 1.
4
IMR12
1
R/W
Bus Operation Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR12) is enabled. When set to 1, OVR0 is masked.
3, 2
All 1
R
Reserved These bits are always read as 1. The write value should always be 1.
1
IMR9
1
R/W
Unread Interrupt Mask When this bit is cleared to 0, OVR0 (interrupt request by IRR9) is enabled. When set to 1, OVR0 is masked.
0
IMR8
1
R/W
Mailbox Empty Interrupt Mask When this bit is cleared to 0, SLE0 (interrupt request by IRR8) is enabled. When set to 1, SLE0 is masked.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.14 Receive Error Counter (REC) REC is an 8-bit read-only register that functions as a counter indicating the number of receive message errors on the CAN bus. The count value is stipulated in the CAN protocol. 18.3.15 Transmit Error Counter (TEC) TEC is an 8-bit read-only register that functions as a counter indicating the number of transmit message errors on the CAN bus. The count value is stipulated in the CAN protocol. 18.3.16 Unread Message Status Register (UMSR) UMSR is a status register that indicates, for individual mailboxes, that a received message has been overwritten by a new receive message before being read. When overwritten by a new message, data in the unread receive message is lost.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: Bit Name UMSR7 UMSR6 UMSR5 UMSR4 UMSR3 UMSR2 UMSR1 UMSR0 UMSR15 UMSR14 UMSR13 UMSR12 UMSR11 UMSR10 UMSR9 UMSR8 * Initial Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 R/W Description
R/(W)* Indicates that a received massage has been overwritten by R/(W)* a new message before being read. R/(W)* [Setting condition] R/(W)* When a new message is received before RXPR is cleared R/(W)* [Clearing condition] R/(W)* Writing 1 R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)* R/(W)*
Only 1 can be written to this bit for clearing the flag.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.17 Local Acceptance Filter Masks (LAFML, LAFMH) LAFML and LAFMH individually set the identifier bits of the message to be stored in mailbox 0 as Don't Care. For details, see section 18.4.4, Massage Reception. The relationship between the identifier bits and mask bits are shown in the following. * LAFML
Bit 15 14 13 12 11 10 9 8 7 6 5 4 Bit Name Initial Value LAFML7 LAFML6 LAFML5 LAFML4 LAFML3 LAFML2 LAFML1 LAFML0 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W Description When this bit is set to 1, ID-7 of the receive message identifier is not compared. When this bit is set to 1, ID-6 of the receive message identifier is not compared. When this bit is set to 1, ID-5 of the receive message identifier is not compared. When this bit is set to 1, ID-4 of the receive message identifier is not compared. When this bit is set to 1, ID-3 of the receive message identifier is not compared. When this bit is set to 1, ID-2 of the receive message identifier is not compared. When this bit is set to 1, ID-1 of the receive message identifier is not compared. When this bit is set to 1, ID-0 of the receive message identifier is not compared. When this bit is set to 1, ID-15 of the receive message identifier is not compared. When this bit is set to 1, ID-14 of the receive message identifier is not compared. When this bit is set to 1, ID-13 of the receive message identifier is not compared. When this bit is set to 1, ID-12 of the receive message identifier is not compared.
LAFML15 0 LAFML14 0 LAFML13 0 LAFML12 0
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Bit 3 2 1 0
Bit Name Initial Value LAFML11 0 LAFML10 0 LAFML9 LAFML8 0 0
R/W R/W R/W R/W R/W
Description When this bit is set to 1, ID-11 of the receive message identifier is not compared. When this bit is set to 1, ID-10 of the receive message identifier is not compared. When this bit is set to 1, ID-9 of the receive message identifier is not compared. When this bit is set to 1, ID-8 of the receive message identifier is not compared.
* LAFMH
Bit 15 14 13 Bit Name Initial Value LAFMH7 LAFMH6 LAFMH5 0 0 0 All 0 R/W R/W R/W R/W R Description When this bit is set to 1, ID-20 of the receive message identifier is not compared. When this bit is set to 1, ID-19 of the receive message identifier is not compared. When this bit is set to 1, ID-18 of the receive message identifier is not compared. Reserved These bits are always read as 0. The write value should always be 0. 9 8 7 6 5 4 3 LAFMH1 LAFMH0 0 0 R/W R/W R/W R/W R/W R/W R/W When this bit is set to 1, ID-17 of the receive message identifier is not compared. When this bit is set to 1, ID-16 of the receive message identifier is not compared. When this bit is set to 1, ID-28 of the receive message identifier is not compared. When this bit is set to 1, ID-27 of the receive message identifier is not compared. When this bit is set to 1, ID-26 of the receive message identifier is not compared. When this bit is set to 1, ID-25 of the receive message identifier is not compared. When this bit is set to 1, ID-24 of the receive message identifier is not compared.
12 to 10
LAFMH15 0 LAFMH14 0 LAFMH13 0 LAFMH12 0 LAFMH11 0
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Bit 2 1 0
Bit Name
Initial Value
R/W R/W R/W R/W
Description When this bit is set to 1, ID-23 of the receive message identifier is not compared. When this bit is set to 1, ID-22 of the receive message identifier is not compared. When this bit is set to 1, ID-21 of the receive message identifier is not compared.
LAFMH10 0 LAFMH9 LAFMH8 0 0
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.3.18 Message Control (MC0 to MC15) The message control register sets consist of eight 8-bit registers for one mailbox. The HCAN has 16 sets of these registers. Because message control registers are in RAM, their initial values after power-on are undefined. Be sure to initialize them by writing 0 or 1. Figure 18.2 shows the register names for each mailbox.
Mail box 0 Mail box 1 Mail box 2 Mail box 3
MC0[1] MC1[1] MC2[1] MC3[1]
MC0[2] MC1[2] MC2[2] MC3[2]
MC0[3] MC1[3] MC2[3] MC3[3]
MC0[4] MC1[4] MC2[4] MC3[4]
MC0[5] MC1[5] MC2[5] MC3[5]
MC0[6] MC1[6] MC2[6] MC3[6]
MC0[7] MC1[7] MC2[7] MC3[7]
MC0[8] MC1[8] MC2[8] MC3[8]
Mail box 15
MC15[1] MC15[2] MC15[3] MC15[4] MC15[5] MC15[6] MC15[7] MC15[8]
Figure 18.2 Message Control Register Configuration The setting of message control registers are shown in the following. Figures 18.3 and 18.4 show the correspondence between the identifiers and register bit names.
SOF
ID-28 ID-27 identifier
ID-18
RTR
IDE
R0
Figure 18.3 Standard Format
SOF
ID-28 ID-27
ID-18
SRR
IDE
ID-17 ID-16 Extended identifier
ID-0
RTR
R1
Standard identifier
Figure 18.4 Extended Format
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Register Name MCx[1]
Bit 7 to 4 3 to 0
Bit Name DLC3 to DLC0
R/W R/W R/W
Description The initial value of these bits is undefined; they must be initialized (by writing 0 or 1). Data Length Code Set the data length of a data frame or the data length requested in a remote frame within the range of 0 to 8 bytes. 0000: 0 bytes 0001: 1 byte 0010: 2 bytes 0011: 3 bytes 0100: 4 bytes 0101: 5 bytes 0110: 6 bytes 0111: 7 bytes 1000: 8 bytes : : 1111: 8 bytes
MCx[2] MCx[3] MCx[4] MCx[5]
7 to 0 7 to 0 7 to 0 7 to 5 4
ID-20 to ID-18 RTR
R/W R/W R/W R/W R/W
The initial value of these bits is undefined; they must be initialized (by writing 0 or 1).
Sets ID-20 to ID-18 in the identifier. Remote Transmission Request Used to distinguish between data frames and remote frames. 0: Data frame 1: Remote frame
3
IDE
R/W
Identifier Extension Used to distinguish between the standard format and extended format of data frames and remote frames. 0: Standard format 1: Extended format
2 1, 0
ID-17 to ID-16
R/W R/W
The initial value of this bit is undefined. It must be initialized by writing 0 or 1. Sets ID-17 and ID-16 in the identifier.
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Register Name MCx[6] MCx[7] MCx[8]
Bit 7 to 0 7 to 0 7 to 0
Bit Name ID-28 to ID-21 ID-7 to ID-0 ID-15 to ID-8
R/W R/W R/W R/W
Description Sets ID-28 to ID-21 in the identifier. Sets ID-7 to ID-0 in the identifier. Sets ID-15 to ID-8 in the identifier.
Note: x: Mailbox number
18.3.19 Message Data (MD0 to MD15) The message data register sets consist of eight 8-bit registers for one mailbox. The HCAN has 16 sets of these registers. Because message data registers are in RAM, their initial values after poweron are undefined. Be sure to initialize them by writing 0 or 1. Figure 18.5 shows the register names for each mailbox.
Mail box 0 Mail box 1 Mail box 2 Mail box 3
MD0[1] MD1[1] MD2[1] MD3[1]
MD0[2] MD1[2] MD2[2] MD3[2]
MD0[3] MD1[3] MD2[3] MD3[3]
MD0[4] MD1[4] MD2[4] MD3[4]
MD0[5] MD1[5] MD2[5] MD3[5]
MD0[6] MD1[6] MD2[6] MD3[6]
MD0[7] MD1[7] MD2[7] MD3[7]
MD0[8] MD1[8] MD2[8] MD3[8]
Mail box 15
MD15[1] MD15[2] MD15[3] MD15[4] MD15[5] MD15[6] MD15[7] MD15[8]
Figure 18.5 Message Data Configuration
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.4
18.4.1
Operation
Hardware and Software Resets
The HCAN can be reset by a hardware reset or software reset. * Hardware Reset At power-on reset, or in hardware standby mode, software standby mode, watch mode, or module stop mode, the HCAN is initialized by automatically setting the MCR reset request bit (MCR0) in MCR and the reset state bit (GSR3) in GSR. At the same time, all internal registers, except for message control and message data registers, are initialized by a hardware reset. * Software Reset The HCAN can be reset by setting the MCR reset request bit (MCR0) in MCR via software. In a software reset, the error counters (TEC and REC) are initialized, however other registers are not. If the MCR0 bit is set while the CAN controller is performing a communication operation (transmission or reception), the initialization state is not entered until message transfer has been completed. The reset status bit (GSR3) in GSR is set on completion of initialization. 18.4.2 Initialization after Hardware Reset
After a hardware reset, the following initialization processing should be carried out: 1. 2. 3. 4. 5. Clearing of IRR0 bit in the interrupt register (IRR) Bit rate setting Mailbox transmit/receive settings Mailbox (RAM) initialization Message transmission method setting
These initial settings must be made while the HCAN is in bit configuration mode. Configuration mode is a state in which the GSR3 bit in GSR is set to 1 by a reset. Configuration mode is exited by clearing the MCR0 bit in MCR to 0; when the MCR0 bit is cleared to 0, the HCAN automatically clears the GSR3 bit in GSR. There is a delay between clearing the MCR0 bit and clearing the GSR3 bit because the HCAN needs time to be internally reset, there is a delay between clearing of the MCR0 bit and GSR3 bit. After the HCAN exits configuration mode, the power-up sequence begins, and communication with the CAN bus is possible as soon as 11 consecutive recessive bits have been detected.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
IRR0 Clearing: The reset interrupt flag (IRR0) is always set after a power-on reset, recovery from software standby mode and watch mode, or canceling module standby mode. As an HCAN interrupt is initiated immediately when interrupts are enabled, IRR0 should be cleared.
Hardware reset
: Settings by user : Processing by hardware
MCR0 = 1 (automatic)
IRR0 = 1 (automatic) GSR3 = 1 (automatic)
Initialization of HCAN module
Clear IRR0 BCR setting MBCR setting Mailbox initialization Message transmission method setting
Bit configuration mode Period in which BCR, MBCR, etc., are initialized
MCR0 = 0
GSR3 = 0? Yes IMR setting (interrupt mask setting) MBIMR setting (interrupt mask setting) MC[x] setting (receive identifier setting) LAFM setting (receive identifier mask setting)
No
GSR3 = 0 & 11 recessive bits received? Yes
No
Can bus communication enabled
Figure 18.6 Hardware Reset Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
MCR0=1 : Setting by user Bus idle? Y GSR3=1 (automatic) Initialization of REC and TEC only No : Processing by hardware
BCR setting MBCR setting Mailbox (RAM) initialization Message translation method setting OK? Yes
Correction No
GSR3=1? Yes
No
MCR0=0
GSR3=0? Yes
No
Correction IMR setting MBCR setting MC[x] setting LAFM setting OK?
No
Yes
GSR3=0 & recessive bits received? Yes CAN bus communication enabled
No
Figure 18.7 Software Reset Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Bit Rate and Bit Timing Settings: The bit rate and bit timing settings are made in the bit configuration register (BCR). Settings should be made such that all CAN controllers connected to the CAN bus have the same baud rate and bit width. The 1-bit time consists of the total of the settable time quantum (TQ). Though BCR can always be written to, it should not be modified in other than configuration mode.
1-bit time (8 to 25 time quanta)
SYNC_SEG
PRSEG
PHSEG1
PHSEG2 Time segment 2 (TSEG2) 2 to 8 time quanta
Time segment 1 (TSEG1) 1 time quantaum 4 to 16 time quanta
Figure 18.8 Detailed Description of One Bit SYNC_SEG is a segment for establishing the synchronization of nodes on the CAN bus. Normal bit edge transitions occur in this segment. PRSEG is a segment for compensating for the physical delay between networks. PHSEG1 is a buffer segment for correcting phase drift (positive). This segment is extended when synchronization (resynchronization) is established. PHSEG2 is a buffer segment for correcting phase drift (negative). This segment is shortened when synchronization (resynchronization) is established. Limits on the settable value (TSEG1, TSEG2, BRP, BSP, and SJW) are shown in table 18.2. Table 18.2 Limits for Settable Value
Name Time segment 1 Time segment 2 Baud rate prescaler Bit sample point Re-synchronization jump width Abbreviation TSEG1 TSEG2 BRP BSP SJW*
1
Min. Value B'0011* B'001*
2 3
Max. Value B'1111 B'111 B'111111 B'1 B'11
B'000000 B'0 B'00
Notes: 1. SJW is stipulated in the CAN specifications: 3 SJW 0 2. The minimum value of TSEG2 is stipulated in the CAN specifications: TSEG2 SJW 3. The minimum value of TSEG1 is stipulated in the CAN specifications: TSEG1 > TSEG2
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Time quantum (TQ) is an integer multiple of the number of system clocks, and is determined by the baud rate prescaler (BRP) as follows. fCLK is the system clock frequency. TQ = 2 x (BRP setting + 1)/fCLK The following formula is used to calculate the 1-bit time and bit rate. 1-bit time = TQ x (3 + TSEG1 + TSEG2) Bit rate = 1/Bit time = fCLK/{2 x (BRP setting + 1) x (3 + TSEG1 + TSEG2)} Note: fCLK = (system clock) BCR value is used for BRP, TSEG1, and TSEG2. Example: With a system clock of 20 MHz, a BRP setting of B'000000, a TSEG1 setting of B'0100, and a TSEG2 setting of B'011: Bit rate = 20/{2 x (0 + 1) x (3 + 4 + 3)} = 1 Mbps
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Table 18.3 Setting Range for TSEG1 and TSEG2 in BCR
TSEG2 (BCR[14:12]) 001 2 TSEG1 (BCR[11:8]) 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Note: No Yes* Yes* Yes* Yes* Yes* Yes* Yes* Yes* Yes* Yes* Yes* Yes* 010 3 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 011 4 No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 100 5 No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 101 6 No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 110 7 No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes 111 8 No No No No No Yes Yes Yes Yes Yes Yes Yes Yes
The time quantum value for TSEG1 and TSEG2 is the TSEG value + 1. * When baud rate prescaler (BRP), BCR[13:8], is not B'000000 (2 x system clock), this can be set.
Mailbox Transmit/Receive Settings: The HCAN has 16 mailboxes. Mailbox 0 is receive-only, while mailboxes 1 to 15 can be set for transmission or reception. The Initial status of mailboxes 1 to 15 is for transmission. Mailbox transmit/receive settings are not initialized by a software reset. Clearing a bit to 0 in the mailbox configuration register (MBCR) designates the corresponding mailbox for transmission use, whereas a setting of 1 in MBCR designates the corresponding mailbox for reception use. When setting mailboxes for reception, in order to improve message reception efficiency, high-priority messages should be set in low-to-high mailbox order. Mailbox (Message Control/Data) Initial Settings: Message control/data are held in RAM, and so their initial values are undefined after power is supplied. Initial values must therefore be set in all the mailboxes (by writing 0s or 1s). Setting the Message Transmission Method: The following two kinds of message transmission methods are available.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
* Transmission order determined by message identifier priority * Transmission order determined by mailbox number priority Either of the message transmission methods can be selected with the message transmission method bit (MCR2) in the master control register (MCR): When messages are set to be transmitted according to the message identifier priority, if several messages are designated as waiting for transmission (TXPR = 1), the message with the highest priority in the message identifier is stored in the transmit buffer. CAN bus arbitration is then carried out for the message stored in the transmit buffer, and the message is transmitted when the transmission right is acquired. When the TXPR bit is set, the highest-priority message is found and stored in the transmit buffer. When messages are set to be transmitted according to the mailbox number priority, if several messages are designated as waiting for transmission (TXPR = 1), messages are stored in the transmit buffer in low-to-high mailbox order. CAN bus arbitration is then carried out for the message stored in the transmit buffer, and the message is transmitted when the transmission right is acquired. 18.4.3 Message Transmission
Messages are transmitted using mailboxes 1 to 15. The transmission procedure after initial settings is described below, and a transmission flowchart is shown in figure 18.9.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Initialization (after hardware reset only) Clear IRR0 BCR setting MBCR setting Mailbox initialization Message transmission method setting Interrupt settings Transmit data setting Arbitration field setting Control field setting Data field setting
: Settings by user : Processing by hardware
Message transmission wait TXPR setting
Bus idle?
No
Yes Message transmission GSR2 = 0 (during transmission only)
Transmission completed?
No
Yes TXACK = 1 IRR8 = 1
IMR8 = 1?
Yes
No Interrupt to CPU Clear TXACK Clear IRR8
End of transmission
Figure 18.9 Transmission Flowchart CPU Interrupt Source Settings: The CPU interrupt source is set by the interrupt mask register (IMR) and mailbox interrupt mask register (MBIMR). Transmission acknowledge and transmission abort acknowledge interrupts can be generated for individual mailboxes in the
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
mailbox interrupt mask register (MBIMR). Interrupt sources of the interrupt register (IRR) can be masked by IMR. Arbitration Field Setting: The arbitration field is set by message control registers MCx[5] to MCx[8] in a transmit mailbox. For a standard format, an 11-bit identifier (ID-28 to ID-18) and the RTR bit are set, and the IDE bit is cleared to 0. For an extended format, a 29-bit identifier (ID-28 to ID-0) and the RTR bit are set, and the IDE bit is set to 1. Control Field Setting: In the control field, the byte length of the data to be transmitted is set within the range of zero to eight bytes. The register to be set is the message control register MCx[1] in a transmit mailbox. Data Field Setting: In the data field, the data to be transmitted is set within the range zero to eight. The registers to be set are the message data registers MDx[1] to MDx[8]. The byte length of the data to be transmitted is determined by the data length code in the control field. Even if data exceeding the value set in the control field is set in the data field, up to the byte length set in the control field will actually be transmitted. Message Transmission: If the corresponding mailbox transmit wait bit (TXPR1 to TXPR15) in the transmit wait register (TXPR) is set to 1 after message control and message data registers have been set, the message enters transmit wait state. If the message is transmitted error-free, the corresponding acknowledge bit (TXACK1 to TXACK15) in the transmit acknowledge register (TXACK) is set to 1, and the corresponding transmit wait bit (TXPR1 to TXPR15) in the transmit wait register (TXPR) is automatically cleared to 0. Also, if the corresponding bit (MBIMR1 to MBIMR15) in the mailbox interrupt mask register (MBIMR) and the mailbox empty interrupt bit (IRR8) in the interrupt mask register (IMR) are both simultaneously set to enable interrupts, interrupts may be sent to the CPU. If transmission of a transmit message is aborted in the following cases, the message is retransmitted automatically: * CAN bus arbitration failure (failure to acquire the bus) * Error during transmission (bit error, stuff error, CRC error, frame error, or ACK error) Message Transmission Cancellation: Transmission cancellation can be specified for a message stored in a mailbox as a transmit wait message. A transmit wait message is canceled by setting the bit for the corresponding mailbox (TXCR1 to TXCR15) to 1 in the transmit cancel register (TXCR). Clearing the transmit wait register (TXPR) does not cancel transmission. When cancellation is executed, the transmit wait register (TXPR) is automatically reset, and the corresponding bit is set to 1 in the abort acknowledge register (ABACK). An interrupt to the CPU can be requested, and if the mailbox empty interrupt (IRR8) is enabled for the bits (MBIMR1 to
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
MBIMR15) corresponding to the mailbox interrupt mask register (MBIMR) and interrupt mask register (IMR), interrupts may be sent to the CPU. However, a transmit wait message cannot be canceled at the following times: * During internal arbitration or CAN bus arbitration * During data frame or remote frame transmission Figure 18.10 shows a flowchart for transmit message cancellation.
Message transmit wait TXPR setting
: Settings by user : Processing by hardware
Set TXCR bit corresponding to message to be canceled
Cancellation possible?
No
Yes Message not sent Clear TXCR, TXPR ABACK = 1 IRR8 = 1 Completion of message transmission TXACK = 1 Clear TXCR, TXPR IRR8 = 1
IMR8 = 1?
Yes
No Interrupt to CPU
Clear TXACK Clear ABACK Clear IRR8
End of transmission/transmission cancellation
Figure 18.10 Transmit Message Cancellation Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.4.4
Message Reception
The reception procedure after initial settings is described below. A reception flowchart is shown in Figure 18.11.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Initialization Clear IRR0 BCR setting MBCR setting Mailbox (RAM) initialization Interrupt settings Receive data setting Arbitration field setting Local acceptance filter mask settings
: Settings by user : Processing by hardware
Message reception (Match of identifier in mailbox?) Yes
No
Same RXPR = 1? No
Yes Unread message
Data frame? Yes RXPR, IRR1 = 1
No
RXPR, RFPR = 1 IRR2 = 1, IRR1 = 1
Yes IMR1 = 1? No Interrupt to CPU Message control read Message data read
IMR2 = 1? No Interrupt to CPU Message control read Message data read
Yes
Clear IRR1 by clearing RXPR
Clear IRR2, IRR1 by clearing RFPR, RXPR Transmission of data frame corresponding to remote frame
End of reception
Figure 18.11 Reception Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
CPU Interrupt Source Settings: CPU interrupt source settings are made in the interrupt mask register (IMR) and mailbox interrupt register (MBIMR). The message to be received is also specified. Data frame and remote frame receive wait interrupt requests can be generated for individual mailboxes in the MBIMR. Interrupt sources of the interrupt register (IRR) are enabled by IMR. Arbitration Field Setting: To receive a message, the message identifier must be set in advance in the message control registers (MCx[1] to MCx[8]) for the receiving mailbox. When a message is received, all the bits in the receive message identifier are compared with those in each message control register identifier, and if a 100% match is found, the message is stored in the matching mailbox. Mailbox 0 has a local acceptance filter mask (LAFM) that allows Don't Care settings to be made. The LAFM setting can be made only for mailbox 0. By making the Don't Care setting for all the bits in the receive message identifier, messages of multiple identifiers can be received. Examples: * When the identifier of mailbox 1 is 010_1010_1010 (standard format), only one kind of message identifier can be received by mailbox 1: Identifier 1: 010_1010_1010 * When the identifier of mailbox 0 is 010_1010_1010 (standard format) and the LAFM setting is 000_0000_0011 (0: Care, 1: Don't Care), a total of four kinds of message identifiers can be received by mailbox 0: Identifier 1: 010_1010_1000 Identifier 2: 010_1010_1001 Identifier 3: 010_1010_1010 Identifier 4: 010_1010_1011 Message Reception: When a message is received, a CRC check is performed automatically. If the result of the CRC check is normal, ACK is transmitted in the ACK field irrespective of whether the message can be received or not. * Data frame reception If the received message is confirmed to be error-free by the CRC check, the identifier in the mailbox (and also LAFM in the case of mailbox 0 only) and the identifier of the receive message, are compared. If a complete match is found, the message is stored in the mailbox. The message identifier comparison is carried out on each mailbox in turn, starting with mailbox 0 and ending with mailbox 15. If a complete match is found, the comparison ends at that point, the message is stored in the matching mailbox, and the corresponding receive complete bit (RXPR0 to RXPR15) is set in the receive complete register (RXPR). However, when a mailbox 0 LAFM comparison is carried out, even if the identifier matches, the mailbox
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
comparison sequence does not end at that point, but continues with mailbox 1 and then the remaining mailboxes. It is therefore possible for a message matching mailbox 0 to be received by another mailbox. Note that the same message cannot be stored in more than one of mailboxes 1 to 15. On receiving a message, a CPU interrupt request may be generated depending on the mailbox interrupt mask register (MBIMR) and interrupt mask register (IMR) settings. * Remote frame reception Two kinds of messages--data frames and remote frames--can be stored in mailboxes. A remote frame differs from a data frame in that the remote transmission request bit (RTR) in the message control register and the data field are 0 bytes long. The data length to be returned in a data frame must be stored in the data length code (DLC) in the control field. When a remote frame (RTR = recessive) is received, the corresponding bit is set in the remote request wait register (RFPR). If the corresponding bit (MBIMR0 to MBIMR15) in the mailbox interrupt mask register (MBIMR) and the remote frame request interrupt mask (IRR2) in the interrupt mask register (IMR) are set to the interrupt enable value at this time, an interrupt can be sent to the CPU. Unread Message Overwrite: If the receive message identifier matches the mailbox identifier, the receive message is stored in the mailbox regardless of whether the mailbox contains an unread message or not. If a message overwrite occurs, the corresponding bit (UMSR0 to UMSR15) is set in the unread message register (UMSR). In overwriting an unread message, when a new message is received before the corresponding bit in the receive complete register (RXPR) has been cleared, the unread message register (UMSR) is set. If the unread interrupt flag (IRR9) in the interrupt mask register (IMR) is set to the interrupt enable value at this time, an interrupt can be sent to the CPU. Figure 18.12 shows a flowchart for unread message overwriting.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Unread message overwrite
: Settings by user : Processing by hardware
UMSR = 1 IRR9 = 1
IMR9 = 1?
Yes
No Interrupt to CPU
Clear IRR9 Message control/message data read
End
Figure 18.12 Unread Message Overwrite Flowchart 18.4.5 HCAN Sleep Mode
The HCAN is provided with an HCAN sleep mode that places the HCAN module in the sleep state in order to reduce current dissipation. Figure 18.13 shows a flowchart of the HCAN sleep mode.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
MCR5 = 1
: Setting by user : Processing by hardware
Bus idle?
No
Yes Initialize TEC and REC
Bus operation? Yes IRR12 = 1
No
*
IMR12 = 1?
No CPU interrupt
Yes
Sleep mode clearing method MCR7 = 0? Yes (manual)
No (automatic)
Clear sleep mode?
No
Yes GSR3 = 1? Yes No
GSR3 = 1? Yes MCR5 = 0
No
MCR5 = 0
11 recessive bits? Yes CAN bus communication possible
No
Note: * Mailbox should not be accessed.
Figure 18.13 HCAN Sleep Mode Flowchart HCAN sleep mode is entered by setting the HCAN sleep mode bit (MCR5) to 1 in the master control register (MCR). If the CAN bus is operating, the transition to HCAN sleep mode is delayed until the bus becomes idle. Either of the following methods of clearing HCAN sleep mode can be selected:
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
* Clearing by software * Clearing by CAN bus operation Eleven recessive bits must be received after HCAN sleep mode is cleared before CAN bus communication is re-enabled. Clearing by software: HCAN sleep mode is cleared by writing a 0 to MCR5 from the CPU. Clearing by CAN bus operation: The cancellation method is selected by the MCR7 bit setting in MCR. Clearing by CAN bus operation occurs automatically when the CAN bus performs an operation and this change is detected. In this case, the first message is not stored in a mailbox; messages will be received normally from the second message onward. When a change is detected on the CAN bus in HCAN sleep mode, the bus operation interrupt flag (IRR12) is set in the interrupt register (IRR). If the bus interrupt mask (IMR12) in the interrupt mask register (IMR) is set to the interrupt enable value at this time, an interrupt can be sent to the CPU. 18.4.6 HCAN Halt Mode
The HCAN halt mode is provided to enable mailbox settings to be changed without performing an HCAN hardware or software reset. Figure 18.14 shows a flowchart of the HCAN halt mode.
MCR1 = 1
Bus idle?
No
Yes MBCR setting
MCR1 = 0
: Settings by user CAN bus communication possible : Processing by hardware
Figure 18.14 HCAN Halt Mode Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
HCAN halt mode is entered by setting the halt request bit (MCR1) to 1 in the master control register (MCR). If the CAN bus is operating, the transition to HCAN halt mode is delayed until the bus becomes idle. HCAN halt mode is cleared by clearing MCR1 to 0.
18.5
Interrupts
Table 18.4 lists the HCAN interrupt sources. With the exception of the reset processing vector (IRR0), these sources can be masked. Masking is implemented using the mailbox interrupt mask register (MBIMR) and interrupt mask register (IMR). For details on the interrupt vector of each interrupt source, see section 5, Interrupt Controller. Table 18.4 HCAN Interrupt Sources
Name ERS0/OVR0 Description Error passive interrupt (TEC 128 or REC 128) Bus off interrupt (TEC 256) Reset process interrupt by power-on reset Remote frame reception interrupt Error warning interrupt (TEC 96) Error warning interrupt (REC 96) Overload frame transmission interrupt Unread message overwrite interrupt CAN bus operation in HCAN sleep mode interrupt RM0 RM1 SLE0 Mailbox 0 message reception interrupt Mailbox 1 to 15 message reception interrupt Message transmission/cancellation interrupt Interrupt Flag IRR5 IRR6 IRR0 IRR2 IRR3 IRR4 IRR7 IRR9 IRR12 IRR1 IRR1 IRR8 Possible Not possible DTC Activation Not possible
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.6
DTC Interface
The DTC can be activated by the reception of a message in HCAN mailbox 0. When DTC transfer ends after DTC activation has been set, the RXPR0 and RFPR0 flags are cleared automatically. An interrupt request due to a receive interrupt from the HCAN cannot be sent to the CPU in this case. Figure 18.15 shows a DTC transfer flowchart.
: Settings by user DTC initialization DTC enable register setting DTC register information setting : Processing by hardware
Message reception in HCAN's mailbox 0
DTC activation
End of DTC transfer?
No
Yes
RXPR and RFPR clearing
Transfer counter = 0 or DISEL = 1? Yes Interrupt to CPU
No
End
Figure 18.15 DTC Transfer Flowchart
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.7
CAN Bus Interface
A bus transceiver IC is necessary to connect this LSI to a CAN bus. A Philips PCA82C250 transceiver IC is recommended. Any other product must be compatible with the PCA82C250. Figure 18.16 shows a sample connection diagram.
124 P1Vcc PCA82C250 RS HRxD HTxD NC 124 Legend: NC: No Connection Vcc P1Vcc CAN bus
This LSI
RxD CANH TxD CANL Vref GND
Figure 18.16 High-Speed Interface Using PCA82C250
18.8
18.8.1
Usage Notes
Module Stop Mode Setting
HCAN operation can be disabled or enabled using the module stop control register. The initial setting is for HCAN operation to be halted. Register access is enabled by clearing module stop mode. For details, see section 22, Power-Down Modes. 18.8.2 Reset
The HCAN is reset by a power-on reset or in hardware standby mode, software standby mode, watch mode, or module stop mode. All the registers are initialized in a reset, however mailboxes (message control (MCx[x])/message data (MDx[x])) are not. After power-on, mailboxes (message control (MCx[x])/message data (MDx[x])) are initialized, and their values are undefined. Therefore, mailbox initialization must always be carried out after a power-on reset or recovery from hardware standby mode, software standby mode, watch mode, or module stop mode. The reset interrupt flag (IRR0) is always set after a power-on reset or recovery from software standby
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
mode, watch mode, or module stop mode. As this bit cannot be masked in the interrupt mask register (IMR), if HCAN interrupt enabling is set in the interrupt controller without clearing the flag, an HCAN interrupt will be initiated immediately. IRR0 should therefore be cleared during initialization. 18.8.3 HCAN Sleep Mode
The bus operation interrupt flag (IRR12) in the interrupt register (IRR) is set by CAN bus operation in HCAN sleep mode. Therefore, this flag is not used by the HCAN to indicate sleep mode release. Note that the reset status bit (GSR3) in the general status register (GSR) is set in sleep mode. 18.8.4 Interrupts
When the mailbox interrupt mask register (MBIMR) is set, the interrupt register (IRR8, 2, 1) is not set by reception completion, transmission completion, or transmission cancellation for the set mailboxes. 18.8.5 Error Counters
In the case of error active and error passive, REC and TEC normally count up and down. In the bus-off state, 11-bit recessive sequences are counted (REC + 1) using REC. If REC reaches 96 during the count, IRR4 and GSR1 are set. 18.8.6 Register Access
Byte or word access can be used on all HCAN registers. Longword access cannot be used. 18.8.7 HCAN Medium-Speed Mode
In medium-speed mode, neither read nor write is possible for the HCAN registers. 18.8.8 Register Hold in Standby Modes and Watch Mode
All HCAN registers except the message control and message data are initialized in hardware standby mode, software standby mode, watch mode, or module stop mode.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.8.9
Usage of Bit Change Instructions
Do not use bit change instructions to clear flags, because the status flags of HCAN is cleared by writing 1. To clear a flag, use MOV instruction to write 1 to only the bits to be cleared. 18.8.10 HCAN TXCR Operation 1. When the transmit wait cancel register (TXCR) is used to cancel a transmit wait message in a transmit wait mailbox, the corresponding bit to TXCR and the transmit wait register (TXPR) may not be cleared even if transmission is canceled. This occurs when the following conditions are all satisfied.
* The HRxD pin is stacked to 1 because of a CAN bus error, etc. * There is at least one mailbox waiting for transmission or being transmitted. * The message transmission in a mailbox being transmitted is canceled by TXCR. If this occurs, transmission is canceled. However, since TXPR and TXCR states are indicated wrongly that a message is being cancelled, transmission cannot be restarted even if the stack state of the HRxD pin is canceled and the CAN bus recovers the normal state. If there are at least two transmission messages, a message which is not being transmitted is canceled and a message being transmitted retains its state. To avoid this, one of the following countermeasures must be executed. * Transmission must not be canceled by TXCR. When transmission is normally completed after the CAN bus has recovered, TXPR is cleared and the HCAN recovers the normal state. * To cancel transmission, the corresponding bit to TXCR must be written to 1 continuously until the bit becomes 0. TXPR and TXCR are cleared and the HCAN recovers the normal state. 2. When the bus-off state is entered while TXPR is set and the transmit wait state is entered, the internal state machine does not operate even if TXCR is set during the bus-off state. Therefore transmission cannot be canceled. The message can be canceled when one message is transmitted or a transmission error occurs after the bus-off state is recovered. To clear a message after the bus-off state is recovered, the following countermeasure must be executed. * A transmit wait message must be cleared by resetting the HCAN during the bus-off period. To reset the HCAN, the module stop bit (MSTPC2 in MSTPCRC) must be set or cleared. In this case, the HCAN is entirely reset. Therefore the initial settings must be made again.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
18.8.11 HCAN Transmit Procedure Phenomenon: When the first transmission is set, and then the next (second) transmission is set or the first set transmission is canceled immediately before SOF is output under the following conditions, the transmit message Identifier (hereafter ID) of being set may be damaged. 1. When transmission is performed while the bus is in the idle state. 2. When the second transmission is set or the set transmission is cancelled within maximum three HCAN operating clocks including the sampling point immediately before the SOF output. 3. When two transmissions (TXPR and another TXPR are set) are set, not the first transmission but the second transmission has priority. When the transmission is set and the set transmission is cancelled (TXPR and TXCR are set), and then transmitting a message of the highest priority is cancelled in the first transmission setting. When TXPR and another TXPR are set, or TXPR and TXCR are set under the all above conditions, the message ID of the highest priority, which is selected in the second transmission setting or the set transmission cancellation, is damaged. That is, upper five bits of the message ID, which is selected in the first transmission, is set in the upper five bits of the ID. After the upper five bits of the transmit message ID selected in the first transmission setting is transmitted to the CAN bus, the lower six bits of the transmit message ID selected in the second transmission setting or the set transmission cancellation and transmit data (maximum eight bytes) are output to the CAN bus. The CRC error is not occurred, since CRC transmits reconstructed transmit message with ID. Note that after the damaged transmit message is transmitted, the transmit message of the second highest priority, which is selected in the second transmission setting or the set transmission cancellation, is output. The message of the highest priority, which is selected in the second transmission setting or the set transmission cancellation, is not output.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
2nd transmission setting 1st transmission or 1st transmission setting cancellation setting
Idle state
Transmission
SOF
Upper five bits of ID
Lower six bits of ID to EOF
Sampling point immediately before SOF
Upper five bits of ID of the Lower six bits of ID of message transmit message selected of the highest priority selected in the 1st transmission setting in the 2nd transmission setting and subsequent bits
Figure 18.17 HCAN Transmit Procedure When the interval between two transmissions, or between transmission and transmission cancellation is same or shorter than following, condition 2 described in above is satisfied and consequently error may occur. Table 18.5 Interval Limitation between TXPR and TXPR or between TXPR and TXCR
Baud Rate (bps) 1M 500 k 250 k Set Interval (s) 50 50 50
Interval (which is for preventing error) is changed depending on the following conditions. * * * * * * * The number of buffers (HCAN has 16 buffers) Data transmission: Mailbox (hereafter MB) number order, ID priority order HCAN operating clock CAN bus baud rate Bit timing (TSEG1, TSEG2) The number of MBs transmitted to the first TXPR and second TXPR The number of CPU accesses to MB in words or bytes after TXPR or TXCR set
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
Countermeasures: In order to prevent this error from happening, please take the countermeasures shown below in software. * Set transmission in one TXPR. After transmission of all transmit messages is completed, set transmission again (mass transmission setting). * Set interval to be longer than shown in table 18.5 between TXPR and another TXPR, or TXPR and TXCR * Transmit message in order of its priority 18.8.12 Canceling HCAN Software Reset or HCAN Sleep Mode When canceling an HCAN software reset or HCAN sleep mode (MCR0 = 0 or MCR5 = 0), first confirm that the reset status bit (GSR3) is set to 1. 18.8.13 Accessing Mailboxes in HCAN Sleep Mode Mailboxes should not be accessed in HCAN sleep mode. If mailboxes are accessed in HCAN sleep mode, the CPU may halt. When registers are accessed in HCAN sleep mode, the CPU does not halt. Also, when mailboxes are accessed not in HCAN sleep mode, the CPU does not halt.
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Section 18 Controller Area Network (HCAN) [H8S/2556 Group]
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Section 19 RAM
Section 19 RAM
This LSI includes high-speed static RAM. The RAM is connected to the CPU by a 16-bit data bus, enabling one-state access by the CPU to both byte data and word data. The RAM can be enabled or disabled using the RAME bit in the system control register (SYSCR). For details on SYSCR, see section 3.2.2, System Control Register (SYSCR).
RAM16K1A_000020020300
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Section 19 RAM
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Section 20 Flash Memory
Section 20 Flash Memory
This LSI has 512-kbyte (H8S/2556, H8S/2552, and H8S/2506) or 384-kbyte (H8S/2551 and H8S/2505) of on-chip flash memory. Features of flash memory are shown below.
20.1
Features
* Two flash-memory MATs according to LSI initiation mode The on-chip flash memory has two memory spaces in the same address space (hereafter referred to as memory MATs). The mode setting in the initiation determines which memory MAT is initiated first. The MAT can be switched by using the bank-switching method after initiation. The user memory MAT is initiated at a power-on reset in user mode: 512 kbytes (H8S/2556, H8S/2552, and H8S/2506) 384 kbytes (H8S/2551 and H8S/2505) The user boot memory MAT is initiated at a power-on reset in user boot mode: 8 kbytes * Three on-board programming modes and one off-board programming mode Boot mode This mode is a program mode that uses an on-chip SCI interface. The user MAT and user boot MAT can be programmed. This mode can automatically adjust the bit rate between host and this LSI. User program mode The user MAT can be programmed by using the optional interface. User boot mode The user boot program of the optional interface can be made and the user MAT can be programmed. * One off-board programming mode Programmer mode This mode uses the PROM programmer. The user MAT and user boot MAT can be programmed. * Programming/erasing interface by the download of on-chip program This LSI has a dedicated programming/erasing program. After downloading this program to the on-chip RAM, programming/erasing can be performed by setting the argument parameter. The user branch is also supported.
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Section 20 Flash Memory
User Branch* Programming is carried out in 128-byte units through several steps such as applying programming pulse and reading verify. Erasing is carried out in 1-divided-block unit through several processing steps. Between these steps, a setting can be created to execute user process routines. This setting is called "with user branch." Note: * Not available in this LSI. * Emulation function of flash memory by using the on-chip RAM As flash memory is overlapped with part of the on-chip RAM, the flash memory programming can be emulated in real time. * Protect Mode Software protect by register setting is provided to set the protect status of programming/erasing flash memory When an error is detected, the mode is changed to error protect mode to abort programming/erasing processing. * Programming/erasing time The flash memory programming time is 3 ms (typ) in 128-byte simultaneous programming and 25 s per byte. The erasing time is 1000 ms (typ) per 64-kbyte block. * Number of programming The number of flash memory programming can be minimum 100 times.
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Section 20 Flash Memory
20.1.1
Block Diagram
Internal address bus
Internal data bus (16 bits)
FCCS FPCS
Module bus
Memory MAT unit User MAT: 512 kbytes
(H8S/2556, H8S/2552, H8S/2506)
FECS FKEY FMATS FTDAR RAMER FVACR FVADR
Flash memory Control unit
384 kbytes
(H8S/2551, H8S/2505)
User boot MAT: 8 kbytes
Mode pin Legend: FCCS: FPCS: FECS: FKEY: FMATS: FTDAR: RAMER: FVACR: FVADR:
Operating mode
Flash code control status register Flash program code select register Flash erase code select register Flash key code register Flash MAT select register Flash transfer destination address register RAM emulation register Flash vector address control register Flash vector address data register
Note: To read from or write to the above registers except RAMER, the FLSHE bit in the system control register 2 (SYSCR2) must be set to 1. When FLSHE is 1, some TPU control registers (H'FFFE80 to H'FFFEB1) cannot be accessed. The FLSHE bit should be cleared before the TPU registers are accessed.
Figure 20.1 Block Diagram of Flash Memory
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Section 20 Flash Memory
20.1.2
Operating Mode
When each mode pin is set in the reset state and reset start is performed, the microcomputer enters each operating mode as shown in figure 20.2. For the setting of each pin, see table 20.1. * Flash memory can be read in user mode, but cannot be programmed or erased. * Flash memory can be read, programmed, or erased on the board only in user program mode, user boot mode, and boot mode. * Flash memory can be read, programmed, or erased by means of the PROM programmer in programmer mode.
RES = 0 Programmer Reset state Programmer mode setting mode
RE S=
S RE
U
=0
s de mo r se
0
in ett
g
Bo
RE
ot mo de
S
=0
ot g bo tin er set Us de mo
RE S =0
se
ttin g
FLSHE = 0 User mode FLSHE = 1 RAM emulation is enabled On-board programming mode User program mode User boot mode Boot mode
Figure 20.2 Mode Transition of Flash Memory
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Section 20 Flash Memory
Table 20.1 MD Pin Setting and Operating Mode
Pin RES MD0* MD1 MD2 Notes: 1
3
Reset state 0 0/1 0/1 0/1
On-chip ROM valid mode*1 1 0/1 1 1
User program mode*2 1 0/1 1 1
User boot mode 1 1 0 0
Boot mode 1 0/1 1 0
Programmer mode 1 0 0 0
On-chip ROM valid mode indicates mode 6 and mode 7. For details, see section 3, MCU Operating Modes. 2. To transit to User program mode, set FLSHE bit in SYSCR2 to 1. 3. In case of On-chip ROM valid mode, User program mode and Boot mode, when the MD0 pin sets to 0, the mode will be Expanded mode, otherwise, when the pin sets to 1, the mode will be Single chip mode. However, in case of User boot mode, there is no Expanded mode.
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Section 20 Flash Memory
20.1.3
Mode Comparison
The comparison table of programming and erasing related items about boot mode, user program mode, user boot mode, and programmer mode is shown in table 20.2. Table 20.2 Comparison of Programming Modes
Boot mode Programming/ erasing environment Programming/ erasing enable MAT All erasure Block division erasure Program data transfer User branch RAM emulation Reset initiation MAT Transition to user mode On-board programming User MAT User boot MAT (Automatic) *
1
User program mode On-board programming User MAT
Programmer User boot mode mode On-board programming User MAT Off-board programming User MAT User boot MAT (Automatic)
x
From optional device via RAM From optional device via RAM Via programmer
From host via SCI
x x
Embedded program storage MAT Changing mode setting and reset
x
User MAT
x x
User boot MAT*
2
x x
Changing FLSHE setting
Changing mode setting and reset
Notes: 1. All-erasure is performed. After that, the specified block can be erased. 2. Firstly, the reset vector is fetched from the embedded program storage MAT. After the flash memory related registers are checked, the reset vector is fetched from the user boot MAT.
* The user boot MAT can be programmed or erased only in boot mode and programmer mode. * The user MAT and user boot MAT are erased in boot mode. Then, the user MAT and user boot MAT can be programmed by means of the command method. However, the contents of the MAT cannot be read until this state. Only user boot MAT is programmed and the user MAT is programmed in user boot mode or only user MAT is programmed because user boot mode is not used. * The boot operation of the optional interface can be performed by the mode pin setting different from user program mode in user boot mode.
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Section 20 Flash Memory
20.1.4
Flash MAT Configuration
This LSI's flash memory is configured by the 512-kbyte (H8S/2556, H8S/2552, and H8S/2506) or 384-kbyte (H8S/2551 and H8S/2505) user MAT and 8-kbyte user boot MAT. The start address is allocated to the same address in the user MAT and user boot MAT. Therefore, when the program execution or data access is performed between two MATs, the MAT must be switched by using FMATS register. The user MAT or user boot MAT can be read in all modes. However, the user boot MAT can be programmed only in boot mode and programmer mode.
H8S/2556, H8S/2552, H8S/2506 H8S/2551, H8S/2505 Address H'000000 Address H'000000 H'001FFF All products
Address H'000000
8 kbytes
384 kbytes 512 kbytes
H'05FFFF
H'07FFFF
Figure 20.3 Flash Memory Configuration The size of the user MAT is different from that of the user boot MAT. An address which exceeds the size of the 8-kbyte user boot MAT should not be accessed. If the attempt is made, data is read as undefined value.
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Section 20 Flash Memory
20.1.5
Block Division
As shown in figure 20.4, the user MAT of 512-kbyte flash memory is divided into 64 kbytes (seven blocks), 32 kbytes (one block), and 4 kbytes (eight blocks). The user MAT of 384-kbyte flash memory is divided into 64 kbytes (five blocks), 32 kbytes (one block), and 4 kbytes (eight blocks). The user MAT can be erased in this divided-block units and the erase-block number of EB0 to EB15 (512-kbyte flash memory) or EB0 to EB13 (384-kbyte flash memory) is specified when erasing. The RAM emulation can be performed in the eight blocks of 4 kbytes.
H8S/2556, H8S/2552, H8S/2506 Address H'000000 4 kbytes x 8 H8S/2551, H8S/2505 Erase block EB0 to * Address H'000000 4 kbytes x 8 Erase block EB0 to *
EB7 32 kbytes 64 kbytes
512 kbytes
EB7 32 kbytes
384 kbytes
EB8 EB9 EB10 EB11 EB12 EB13 EB14 EB15
Address H'05FFFF
EB8 EB9 EB10 EB11 EB12 EB13
64 kbytes 64 kbytes 64 kbytes 64 kbytes 64 kbytes
64 kbytes 64 kbytes 64 kbytes 64 kbytes 64 kbytes
Address H'07FFFF
64 kbytes
Note: The RAM emulation can be performed in the eight blocks of 4 kbytes.
Figure 20.4 Block Division of User MAT
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Section 20 Flash Memory
20.1.6
Programming/Erasing Interface
Programming/erasing is executed by downloading the on-chip program to the on-chip RAM and specifying the program address/data and erase block by using the interface register/parameter. The procedure program is made by the user in user program mode and user boot mode. An overview of the procedure is given as follows. For details, see section 20.4.2, User Program Mode.
Start user procedure program for programming/erasing. Select on-chip program to be downloaded and specify the destination. Download on-chip program by setting FKEY and SCO bits.
Initialization execution (downloaded program execution)
Programming (in 128-byte units) or erasing (in one-block units) (downloaded program execution)
No
Programming/erasing completed? Yes
End user procedure program
Figure 20.5 Overview of User Procedure Program 1. Selection of on-chip program to be downloaded This LSI has programming/erasing programs which can be downloaded to the on-chip RAM. The on-chip program to be downloaded is selected by setting the corresponding bits in the programming/erasing interface register. The address of the programming destination is specified by the FTDAR. 2. Download of on-chip program The on-chip program is automatically downloaded by setting the SCO bit in the flash key register (FKEY) and the flash control register (FCCS) of the programming/erasing interface register. The flash memory is replaced to the embedded program storage area when downloading. Since the flash memory cannot be read when programming/erasing, the procedure program, which is
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Section 20 Flash Memory
working from download to completion of programming/erasing, must be executed in the space other than the flash memory to be programmed/erased (for example, on-chip RAM). Since the result of download is returned to the programming/erasing interface parameter, whether the normal download is executed or not can be confirmed. 3. Initialization of programming/erasing The operating frequency and user branch are set before execution of programming/erasing. The user branch area should be outside programming-prohibited areas such as user MAT area during programming process or on-chip program area. This setting is performed by using the programming/erasing interface parameter. 4. Programming/erasing execution To execute programming/erasing, it is necessary to enter user program mode by setting FLSHE bit in SYSCR2 to 1. The program data/programming destination address is specified in 128-byte units when programming. The block to be erased is specified in erase-block units when erasing. These specifications are set by using the programming/erasing interface parameter and the onchip program is initiated. The on-chip program is executed by using the JSR or BSR instruction and performing the subroutine call of the specified address in the on-chip RAM. The execution result is returned to the programming/erasing interface parameter. The area to be programmed must be erased in advance when programming flash memory. It is, however, impossible to download at the same time the erasing program and the programming program. Therefore, execute the above procedures of 1 to 4 in the order of erasing first and programming next. All interrupts are prohibited during programming and erasing. Interrupts must be masked within the user system. Access in the flash memory space during programming/erasing is not guaranteed. Accordingly, when the interrupt vector or the interrupt handler is in the flash memory, interrupt processing is not guaranteed. When NMI interrupt is inevitable during overprogramming/erasing system such as in system error processing, set FVACR and FVADR to set the interrupt vector and the interrupt processing routine in the on-chip RAM or the external space.
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Section 20 Flash Memory
5. When programming/erasing is executed consecutively When the processing is not ended by the 128-byte programming or one-block erasure, the program address/data and erase-block number must be updated and consecutive programming/erasing is required. Since the downloaded on-chip program is left in the on-chip RAM after the processing, download and initialization are not required when the same processing is executed consecutively.
20.2
Pin Configuration
Table 20.3 shows the flash memory pin configuration. Table 20.3 Pin Configuration
Pin Name Reset Mode 2 Mode 1 Mode 0 Transmit data Receive data Abbreviation RES MD2 MD1 MD0 TxD0 RxD0 Input/Output Input Input Input Input Output Input Function Reset Sets operating mode of this LSI Sets operating mode of this LSI Sets operating mode of this LSI Serial transmit data output (used in boot mode) Serial receive data input (used in boot mode)
Note: For the pin configuration in programmer mode, see section 20.9, Programmer Mode.
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Section 20 Flash Memory
20.3
Register Descriptions
The registers/parameters which control flash memory are shown as follows. To access registers other than RAMER that control flash memory, set the FLSHE bit in SYSCR2 to 1 in mode which makes flash memory valid. When FLSHE is 1, some TPU control registers (H'FFFE80 to H'FFFEB1) cannot be accessed. The FLSHE bit should be cleared before the TPU registers are accessed. * * * * * * * * * * * * * * * * * * * * Flash code control status register (FCCS) Flash program code select register (FPCS) Flash erase code select register (FECS) Flash key code register (FKEY) Flash MAT select register (FMATS) Flash transfer destination address register (FTDAR) System control register 2 (SYSCR2) Flash pass and fail result (FPFR) Download pass and fail result (DPFR) Flash multipurpose address area (FMPAR) Flash multipurpose data destination area (FMPDR) Flash erase Block select (FEBS) Flash program and erase frequency control (FPEFEQ) Flash user branch address set parameter (FUBRA) RAM emulation register (RAMER) Flash vector address control register (FVACR) Flash vector address data register R (FVADRR) Flash vector address data register E (FVADRE) Flash vector address data register H (FVADRH) Flash vector address data register L (FVADRL)
There are several operating modes for accessing flash memory, for example, read mode/program mode. There are two memory MATs: user MAT and user boot MAT. The dedicated registers/parameters are allocated for each operating mode and MAT selection. The correspondence of operating modes and registers/parameters for use is shown in table 20.4.
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Section 20 Flash Memory
Table 20.4 Register/Parameter and Target Mode
Download Programming/ FCCS Erasing Interface FPCS Register FECS FKEY FMATS FTDAR Programming/ DPFR Erasing Interface FPFR Parameter FPEFEQ FUBRA FMPAR FMPDR FEBS RAM Emulation RAMER Initialization *
1
Program ming Erasure
1
Read
2
RAM Emulation
*
*
Notes: 1. The setting is required when programming or erasing user MAT in user boot mode. 2. The setting may be required according to the combination of initiation mode and read target MAT.
20.3.1
Programming/Erasing Interface Register
The programming/erasing interface registers are as described below. They are all 8-bit registers that can be accessed in byte. Except for the FLER bit in FCCS, these registers are initialized at a power-on reset, in hardware standby mode, in software standby mode, or in watch mode. The FLER bit is not initialized in software standby mode or in watch mode. Flash Code Control and Status Register (FCCS): FCCS is configured by bits which request the monitor of error occurrence during programming or erasing flash memory and the download of on-chip program.
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Section 20 Flash Memory
Bit 7
Bit Name
Initial Value 1
R/W R
Description Reserved This bit is always read as 0. The write value should always be 1.
6, 5
All 0
R
Reserved These bits are always read as 0. The write value should always be 0.
4
FLER
0
R
Flash Memory Error Indicates an error occurs during programming and erasing flash memory. When FLER is set to 1, flash memory enters the error protection state. This bit is initialized at transition to a power-on reset or hardware standby mode. When FLER is set to 1, high voltage is applied to the internal flash memory. To reduce the damage to flash memory, the reset must be released after the reset period of 100 s which is longer than normal. 0: Flash memory operates normally Programming/erasing protection for flash memory (error protection) is invalid. [Clearing condition] At a power-on reset or in hardware standby mode 1: Indicates an error occurs during programming/erasing flash memory. Programming/erasing protection for flash memory (error protection) is valid. [Setting condition] See section 20.5.3, Error Protection
3 to 1
All 0
R
Reserved These bits are always read as 0. The write value should always be 0.
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Section 20 Flash Memory
Bit 0
Bit Name SCO
Initial Value 0
R/W (R)/W
Description Source Program Copy Operation Requests the on-chip programming/erasing program to be downloaded to the on-chip RAM. When this bit is set to 1, the on-chip program which is selected by FPCS/FECS is automatically downloaded in the on-chip RAM specified by FTDAR. In order to set this bit to 1, RAM emulation state must be canceled, H'A5 must be written to FKEY, and this operation must be executed in the on-chip RAM. Four NOP instructions must be executed immediately after setting this bit to 1. Since this bit is cleared to 0 when download is completed, this bit cannot be read as 1. 0: Download of the on-chip programming/erasing program to the on-chip RAM is not executed [Clear condition] When download is completed 1: Request that the on-chip programming/erasing program is downloaded to the on-chip RAM is occurred [Set conditions] When all of the following conditions are satisfied and 1 is written to this bit * H'A5 is written to FKEY * * During execution in the on-chip RAM Not in RAM emulation mode (RAMS in RAMER = 0)
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Section 20 Flash Memory
Flash Program Code Select Register (FPCS): FPCS selects the on-chip programming program to be downloaded.
Bit Bit Name Initial Value All 0 R/W R Description Reserved These bits are always read as 0. The write value should always be 0. 0 PPVS 0 R/W Program Pulse Verify Selects the programming program. 0: On-chip programming program is not selected [Clear condition] When transfer is completed 1: On-chip programming program is selected
7 to 1
Flash Erase Code Select Register (FECS): FECS selects download of the on-chip erasing program.
Bit Bit Name Initial Value All 0 R/W R Description Reserved These bits are always read as 0. The write value should always be 0. 0 EPVB 0 R/W Erase Pulse Verify Block Selects the erasing program. 0: On-chip erasing program is not selected [Clear condition] When transfer is completed 1: On-chip erasing program is selected
7 to 1
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Section 20 Flash Memory
Flash Key Code Register (FKEY): FKEY is a register for software protection that enables download of on-chip program and programming/erasing of flash memory. Before setting the SCO bit to 1 in order to download on-chip program or executing the downloaded programming/erasing program, these processing cannot be executed if the key code is not written.
Bit 7 6 5 4 3 2 1 0 Bit Name K7 K6 K5 K4 K3 K2 K1 K0 Initial Value 0 0 0 0 0 0 0 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Key Code Only when H'A5 is written, writing to the SCO bit is valid. When the value other than H'A5 is written to FKEY, 1 cannot be written to the SCO bit. Therefore downloading to the on-chip RAM cannot be executed. Only when H'5A is written, programming/erasing can be executed. Even if the on-chip programming/erasing program is executed, the flash memory cannot be programmed or erased when the value other than H'5A is written to FKEY. H'A5: Writing to the SCO bit is enabled (The SCO bit cannot be set by the value other than H'A5.) H'5A: Programming/erasing is enabled (The value other than H'5A is in software protection state.) H'00: Initial value
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Section 20 Flash Memory
Flash MAT Select Register (FMATS): FMATS specifies whether user MAT or user boot MAT is selected.
Bit 7 6 5 4 3 2 1 0 Bit Name MS7 MS6 MS5 MS4 MS3 MS2 MS1 MS0 Initial Value 0/1* 0 0/1* 0 0/1* 0 0/1* 0 R/W R/W R/W R/W R/W R/W R/W R/W R/W Description MAT Select These bits are in user-MAT selection state when the value other than H'AA is written and in user-boot-MAT selection state when H'AA is written. The MAT is switched by writing the value in FMATS. When the MAT is switched, follow section 20.7, Switching between User MAT and User Boot MAT. (The user boot MAT cannot be programmed in user program mode if user boot MAT is selected by FMATS. The user boot MAT must be programmed in boot mode or in programmer mode.) H'AA: The user boot MAT is selected (in user-MAT selection state when the value of these bits are other than H'AA) Initial value when these bits are initiated in user boot mode. H'00: Initial value when these bits are initiated in a mode except for user boot mode (in user-MAT selection state) [Programmable condition] These bits are in the execution state in the on-chip RAM. Note: Set to 1 when in user boot mode, otherwise set to 0.
Flash Transfer Destination Address Register (FTDAR): FTDAR is a register that specify the address to download an on-chip program. This register must be specified before setting the SCO bit in FCCS to 1.
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Section 20 Flash Memory
Bit 7
Bit Name TDER
Initial Value 0
R/W R/W
Description Transfer Destination Address Setting Error This bit is set to 1 when the address specified by bits TDA6 to TDA0, which is the start address to download an on-chip program, is over the range. Whether or not the range specified by bits TDA6 to TDA0 is within the range of H'00 to H'07 is determined when an on-chip program is downloaded by setting the SCO bit in FCCS. Make sure that this bit is cleared to 0 before setting the SCO bit to 1 and the value specified by TDA6 to TDA0 is within the range of H'00 to H'07. 0: The value specified by bits TDA6 to TDA0 is within the range. 1: The value specified by is TDA6 to TDA0 is over the range (H'08 to H'FF) and the download is stopped.
6 5 4 3 2 1 0
TDA6 TDA5 TDA4 TDA3 TDA2 TDA1 TDA0
0 0 0 0 0 0 0
R/W R/W R/W R/W R/W R/W R/W
Transfer Destination Address Specifies the start address to download an on-chip program. H'00 to H'07 can be specified meaning that the start address in the on-chip RAM space can be specified in units of 4 kbytes. H'00: H'FF9000 is specified as a start address to download an on-chip program. H'01: H'FFA000 is specified as a start address to download an on-chip program. H'02: H'FFB000 is specified as a start address to download an on-chip program. H'03: H'FFC000 is specified as a start address to download an on-chip program. H'04: H'FFD000 is specified as a start address to download an on-chip program. H'05: H'FFE000 is specified as a start address to download an on-chip program. H'06: H'FF8000 is specified as a start address to download an on-chip program. H'07: H'FF7000 is specified as a start address to download an on-chip program. H'08 to H'FF: Setting prohibited. Specifying this value sets the TDRE bit to 1 and stops the download.
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Section 20 Flash Memory
System Control Register 2 (SYSCR2): SYSCR2 controls register accesses.
Bit Bit Name Initial Value R/W Description Reserved The write value should always be 0. 3 FLSHE 0 R/W Flash memory control register enable The access of the flash memory control register to the CPU is controlled by writing 0. Setting 1 to FLSHE bit enables reading/programming the flash memory control register. When this bit is cleared to 0, the flash memory control register is not selected. In this case, the content of the flash memory control register is retained. 0: Flash control logic unit which controls H'FFFFA4 to H'FFFFAF is disabled. 1: Flash control logic unit which controls H'FFFFA4 to H'FFFFAF is enabled. 2 1, 0 Undefined All 0 R/W Reserved The write value should always be 0. Reserved The write value should always be 0.
7 to 4
Undefined
20.3.2
Programming/Erasing Interface Parameter
The programming/erasing interface parameter specifies the operating frequency, user branch destination address, storage place for program data, programming destination address, and erase block and exchanges the processing result for the downloaded on-chip program. This parameter uses the general registers of the CPU (ER0 and ER1) or the on-chip RAM area. The initial value is undefined at a power-on reset or in hardware standby mode. When download, initialization, or on-chip program is executed, registers of the CPU except for R0L are stored. The return value of the processing result is written in R0L. Since the stack area is used for storing the registers except for R0L, the stack area must be saved at the processing start. (A maximum size of a stack area to be used is 128 bytes.) The programming/erasing interface parameter is used in the following four items. 1. Download control 2. Initialization before programming or erasing
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Section 20 Flash Memory
3. Programming 4. Erasing These items use different parameters. The correspondence table is shown in table 20.5. The meaning of the bits in FPFR varies in each processing program: initialization, programming, or erasure. For details, see descriptions of FPFR for each process. Table 20.5 Parameters and Target Modes
Name of Parameter Download pass and fail result Abbrevia- Down tion Load DPFR Initialization Programming Erasure R/W R/W R/W Initial Value Undefined Undefined Undefined Allocation On-chip RAM* R0L of CPU ER0 of CPU
Flash pass and fail FPFR result FPEFEQ Flash programming/ erasing frequency control Flash user branch FUBRA address set parameter Flash multipurpose address area Flash multipurpose data destination area Flash erase block select FMPAR

R/W
R/W
Undefined
ER1 of CPU ER1 of CPU ER0 of CPU ER0 of CPU
R/W
Undefined
FMPDR
R/W
Undefined
FEBS
R/W
Undefined
Note: A single byte of the start address to download an on-chip program, which is specified by FTDAR.
(1)
Download Control
The on-chip program is automatically downloaded by setting the SCO bit to 1. The on-chip RAM area to be downloaded is the 2-kbyte area starting from the address specified by FTDAR. For the address map of the on-chip RAM, see figure 20.10. Download control is set by the programming/erasing interface registers, and the DPFR parameter indicates the return value.
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Section 20 Flash Memory
(a)
Download pass/fail result parameter (DPFR: single byte of start address specified by FTDAR)
This parameter indicates the return value of the download result. The value of this parameter can be used to determine if downloading is executed or not. Since the confirmation whether the SCO bit is set to 1 is difficult, the certain determination must be performed by writing the single byte of the start address specified by FTDAR to the value other than the return value of download (for example, H'FF) before the download start (before setting the SCO bit to 1).
Bit Bit Name Initial Value R/W R/W Description Reserved Return 0 2 SS Source Select Error Detect Only one type for the on-chip program which can be downloaded can be specified. When more than two types of the program are selected, the program is not selected, or the program is selected without mapping, error is occurred. 0: Download program can be selected normally 1: Download error is occurred (multi-selection or program which is not mapped is selected) 1 FK R/W Flash Key Register Error Detect (FK) Returns the check result whether the value of FKEY register is set to H'A5. 0: FKEY setting is normal (FKEY = H'A5) 1: Setting value of FKEY becomes error (FKEY = value other than H'A5) 0 SF R/W Success/Fail Returns the result whether download is ended normally or not. The determination result whether program that is downloaded to the on-chip RAM is read back and then transferred to the on-chip RAM is returned. 0: Downloading on-chip program is ended normally (no error) 1: Downloading on-chip program is ended abnormally (error occurs)
7 to 3
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Section 20 Flash Memory
(2)
Programming/Erasing Initialization
The on-chip programming/erasing program to be downloaded includes the initialization program. The specified period pulse must be applied when programming or erasing. The specified pulse width is made by the method in which wait loop is configured by the CPU instruction. The operating frequency of the CPU must be set. The initial program is set as a parameter of the programming/erasing program which has downloaded these settings. (a) Flash programming/erasing frequency parameter (FPEFEQ: General register ER0 of CPU)
This parameter sets the operating frequency of the CPU. For the settable range of operating frequency in this LSI, see section 24.4.2, Clock Timing.
Bit Bit Name Initial Value R/W R/W R/W Description Reserved These bit should be cleared to 0. 15 to 0 F15 to F0 Frequency Set Set the operating frequency of the CPU. The setting value must be calculated as the following methods. * The operating frequency which is shown in MHz units must be rounded in a number to three decimal places and be shown in a number of two decimal places. The value multiplied by 100 is converted to the binary digit and is written to the FPEFEQ parameter (general register ER0).
31 to 16 F31 to F16
*
For example, when the operating frequency of the CPU is 25.000 MHz, the value is as follows. * * The number to three decimal places of 25.000 is rounded and the value is thus 25.00. The formula that 25.00 x 100 = 2500 is converted to the binary digit and B'0000,1001,1100,0100 (H'09C4) is set to ER0.
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Section 20 Flash Memory
(b) Flash user branch address setting parameter (FUBRA: General register ER1 of CPU) This parameter sets the user branch destination. Set user program is executed in a specified unit during programming/erasure.
Bit Bit Name Initial Value R/W R/W Description User Branch Destination Address When no user branch is required, set address 0 (H'00000000). The user branch destination should be the RAM space or external bus space to which on-chip program is not transferred. Be careful not to branch to the area without execution codes, or runaway or destruction of the on-chip program area or the stack area is caused. In case of runaway, the value of flash memory is not guaranteed. During the processing in the user branch destination, do not download or initialize the on-chip program or initiate programming/erasing program. Programming/erasing at the return from the user branch destination is not guaranteed. In addition, do not modify the data prepared to be programmed. Also during the processing in the user branch destination, do not modify the programming/erasing interface register or make transition to RAM emulation mode. After the user branch processing has completed, use the RTS instruction to return to programming/erasing program.
31 to 0 UA31 to UA0
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Section 20 Flash Memory
(c)
Flash pass/fail parameter (FPFR: general register R0L of CPU)
This parameter indicates FPFR as the return value of the initialization result.
Bit 7 to 3 2 Bit Name BR Initial Value R/W R/W Description Reserved Return 0 User Branch Error Detect Returns the check result whether the specified user branch destination address is in the storage area for the downloaded programming/erasing-related programs. 0: Setting of user branch address is normal 1: Setting of user branch address is abnormal 1 FQ R/W Frequency Error Detect Returns the check result whether the specified operating frequency of the CPU is in the range of the supported operating frequency. 0: Setting of operating frequency is normal 1: Setting of operating frequency is abnormal 0 SF R/W Success/Fail Indicates whether initialization is completed normally. 0: Initialization is ended normally (no error) 1: Initialization is ended abnormally (error occurs)
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Section 20 Flash Memory
(3)
Programming Execution
When flash memory is programmed, the programming destination address on the user MAT and the program data must be passed to the downloaded programming program. 1. The start address of the programming destination on the user MAT must be stored in a general register ER1. This parameter is called as FMPAR (flash multipurpose address area parameter). Since the program data is always in units of 128 bytes, the lower eight bits (A7 to A0) must be H'00 or H'80 as the boundary of the programming start address on the user MAT. 2. The program data for the user MAT must be prepared in the consecutive area. The program data must be in the consecutive space which can be accessed by using the MOV.B instruction of the CPU and in other than the flash memory space. When data to be programmed does not satisfy 128 bytes, the 128-byte program data must be prepared by filling with the dummy code H'FF. The start address of the area in which the prepared program data is stored must be stored in a general register ER0. This parameter is called as FMPDR (flash multipurpose data destination area parameter). For details on the program processing procedure, see section 20.4.2, User Program Mode. (a) Flash multipurpose address area parameter (FMPAR: general register ER1 of CPU)
This parameter stores the start address of the programming destination on the user MAT. When the address in the area other than flash memory space is set, an error occurs. The start address of the programming destination must be at the 128-byte boundary. If this boundary condition is not satisfied, an error occurs. The error occurrence is indicated by the WA bit in FPFR.
Bit Bit Name Initial Value R/W R/W Description Store the start address of the programming destination on the user MAT. The consecutive 128-byte programming is executed starting from the specified start address of the user MAT. Therefore, the specified programming start address becomes a 128-byte boundary and MOA6 to MOA0 are always 0.
31 to 0 MOA31 to MOA0
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Section 20 Flash Memory
(b) Flash multipurpose data destination parameter (FMPDR: general register ER0 of CPU): This parameter stores the start address in the area which stores the data to be programmed in the user MAT. When the storage destination of the program data is in flash memory, an error occurs. The error occurrence is indicated by the WD bit in FPFR.
Bit Bit Name Initial Value R/W R/W Description Store the start address of the area which stores the program data for the user MAT. The consecutive 128byte data is programmed to the user MAT starting from the specified start address.
31 to 0 MOD31 to MOD0
(c)
Flash pass/fail parameter (FPFR: general register R0L of CPU)
This parameter indicates the return value of the program processing result.
Bit 7 6 Bit Name MD Initial Value R/W R/W Description Reserved Return 0. Programming Mode Related Setting Error Detect Returns the check result that the error protection state is not entered. For conditions to enter the error protection state, see section 20.5.3, Error Protection. 0: FLER setting is normal (FLER = 0) 1: Programming cannot be performed (FLER = 1)
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Section 20 Flash Memory
Bit 5
Bit Name EE
Initial Value
R/W R/W
Description Programming Execution Error Detect 1 is returned to this bit when the specified data could not be written or some flash memory related registers are rewritten at return from the user brunch processing because the user MAT was not erased. If FMATS is set to H'AA and the user boot MAT is selected, an error occurs when programming is performed. In this case, both the user MAT and user boot MAT are not rewritten. Programming of the user boot MAT should be performed in boot mode or programmer mode. 0: Programming has ended normally 1: Programming has ended abnormally (programming result is not guaranteed)
4
FK
R/W
Flash Key Register Error Detect Returns the check result of the value of FKEY before the start of the programming processing. 0: FKEY setting is normal (FKEY = H'5A) 1: FKEY setting is error (FKEY = value other than H'5A)
3 2
WD

R/W
Reserved Returns 0. Write Data Address Detect When the following address is specified as the start address of the storage destination of the program data, an error occurs. * * The address in the on-chip RAM where programming/erasing program is downloaded The address in the flash memory area
0: Setting of write data address is normal 1: Setting of write data address is abnormal
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Section 20 Flash Memory
Bit 1
Bit Name WA
Initial Value
R/W R/W
Description Write Address Error Detect When the following items are specified as the start address of the programming destination, an error occurs. * * When the programming destination address in the area other than flash memory is specified When the specified address is not 128-byte boundary (that is, A6 to A0 are not 0)
0: Setting of programming destination address is normal 1: Setting of programming destination address is abnormal 0 SF R/W Success/Fail Indicates whether the program processing is ended normally or not. 0: Programming is ended normally (no error) 1: Programming is ended abnormally (error occurs)
(4)
Erasure Execution
When flash memory is erased, the erase-block number on the user MAT must be passed to the erasing program which is downloaded. This is set to the FEBS parameter (general register ER0). One block is specified from the block number 0 to 15. For details on the erasing processing procedure, see section 20.4.2, User Program Mode.
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Section 20 Flash Memory
(a)
Flash erase block select parameter (FEBS: general register ER0 of CPU)
This parameter specifies the erase-block number. The several block numbers cannot be specified.
Bit Bit Name Initial Value R/W R/W R/W R/W R/W R/W R/W R/W R/W Description Reserved These bits should be cleared to 0. 7 6 5 4 3 2 1 0 EB7 EB6 EB5 EB4 EB3 EB2 EB1 EB0 Erase Block Set the erase-block number in the range from 0 to 15. 0 corresponds to the EB0 block and 15 corresponds to the EB15 block. An error occurs when the number other than 0 to 15 is set.
31 to 8
(b) Flash pass/fail parameter (FPFR: general register R0L of CPU) This parameter returns value of the erasing processing result.
Bit 7 6 Bit Name MD Initial Value R/W Description Reserved Return 0. Erasure Mode Related Setting Error Detect Returns the check result of whether the error protection state is entered. For conditions to enter the error protection state, see section 20.5.3, Error Protection. 0: FLER setting is normal (FLER = 0) 1: FLER = 1 and erasure cannot be performed
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Section 20 Flash Memory
Bit 5
Bit Name EE
Initial Value
R/W R/W
Description Erasure Execution Error Detect 1 is returned to this bit when the user MAT could not be erased or when flash-memory related register settings are partially changed at the return from the user branch processing. If FMATS is set to H'AA and the user boot MAT is selected, an error occurs when erasure is performed. In this case, both the user MAT and user boot MAT are not erased. Erasing of the user boot MAT should be performed in boot mode or programming mode. 0: Erasure has ended normally 1: Erasure has ended abnormally (erasure result is not guaranteed)
4
FK
R/W
Flash Key Register Error Detect Returns the check result of FKEY value before start of the erasing processing. 0: FKEY setting is normal (FKEY = H'5A) 1: FKEY setting is error (FKEY = value other than H'5A)
3
EB
R/W
Erase Block Select Error Detect Returns the check result whether the specified eraseblock number is in the block range of the user MAT. 0: Setting of erase-block number is normal 1: Setting of erase-block number is abnormal
2, 1 0
SF

R/W
Reserved Return 0. Success/Fail Indicates whether the erasing processing is ended normally or not. 0: Erasure is ended normally (no error) 1: Erasure is ended abnormally (error occurs)
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Section 20 Flash Memory
20.3.3
RAM Emulation Register (RAMER)
When the real-time programming of the user MAT is emulated, RAMER sets the area of the user MAT which is overlapped with a part of the on-chip RAM. RAMER is initialized to H'00 at a power-on reset or in hardware standby mode and is not initialized in software standby mode or in watch mode. The RAMER setting must be executed in user mode or in user program mode. For the division method of the user-MAT area, see table 20.6. In order to operate the emulation function certainly, the target MAT of the RAM emulation must not be accessed immediately after RAMER is programmed. If it is accessed, the normal access is not guaranteed.
Bit 7 to 5 Bit Name Initial Value All 0 R/W R Description Reserved These bits are always read as 0. The write value should always be 0. 4 3 RAMS 0 R/W R/W Reserved The write value should always be 0. RAM Select Sets whether the user MAT is emulated or not. When RAMS = 1, all blocks of the user boot MAT are in the programming/erasing protection state. 0: RAM emulation function is invalid All blocks of the user MAT are not in the programming/erasing protection state 1: RAM emulation function is valid All blocks of the user MAT are in the programming/erasing protection state 2 1 0 RAM2 RAM1 RAM0 0 0 0 R/W R/W R/W User MAT Area Select These bits are used with bit 3 and select the user-MAT area to be overlapped with the on-chip RAM. (See table 20.6.)
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Section 20 Flash Memory
Table 20.6 Division of User MAT Area
RAM Area Block Name RAMS RAM2 * 0 0 0 0 1 1 1 1 RAM1 * 0 0 1 1 0 0 1 1 RAM0 * 0 1 0 1 0 1 0 1
H'FFD000 to H'FFDFFF RAM area (4 kbytes) 0 H'000000 to H'000FFF H'001000 to H'001FFF H'002000 to H'002FFF H'003000 to H'003FFF H'004000 to H'004FFF H'005000 to H'005FFF H'006000 to H'006FFF H'007000 to H'007FFF Legend: *: Don't care EB0 (4 kbytes) EB1 (4 kbytes) EB2 (4 kbytes) EB3 (4 kbytes) EB4 (4 kbytes) EB5 (4 kbytes) EB6 (4 kbytes) EB7 (4 kbytes) 1 1 1 1 1 1 1 1
20.3.4
Flash Vector Address Control Register (FVACR)
FVACR modifies the space from which the vector table data of the NMI interrupts is read. Normally the vector table data is read from the address spaces from H'00001C to H'00001F. However, the vector table can be read from the internal I/O register (FVADRR to FVADRL) by the FVACR setting. FVACR is initialized to H'00 at a power-on reset or in hardware standby mode. All interrupts including NMI must be prohibited in the programming/erasing processing or during downloading on-chip program. When the NMI interrupt is necessary such as in the system error processing, FVACR and FVADRR to FVADRL must be set and the interrupt exception processing routine must be set in the on-chip RAM space or in the external space.
Bit 7 Bit Name FVCHGE Initial Value 0 R/W R/W Description Vector Switch Function Valid Selects whether the function for modifying the space from which the vector table data is read is valid or invalid. When FVCHGE = 1, the vector table data can be read from the internal I/O register (FVADRR to FVADRL). 0: Function for modifying the space from which the vector table data is read is invalid (Initial value) 1: Function for modifying the space from which the vector table data is read is valid
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Section 20 Flash Memory
Bit
Bit Name
Initial Value All 0
R/W R
Description Reserved These bits are always read as 0. The write value should always be 0.
6 to 0
20.3.5
Flash Vector Address Data Register (FVADR)
This is a register to store the vector data when the flash vector address control register (FVACR) is used to enable the function to select the space where the vector table data is read. This register consists of four 8-bit registers: FVADRR, FVADRE, FVADRH, and FVADRL. This register is initialized to H'00000000 at a power-on reset or in hardware standby mode. * FVADRR
Bit Bit Name Initial Value R/W All 0 R/W Description Set the vector address. 31 to 24
* FVADRE
Bit Bit Name Initial Value R/W All 0 R/W Description Set the vector address. 23 to 16
* FVADRH
Bit 15 to 8 Bit Name Initial Value All 0 R/W R/W Description Set the vector address.
* FVADRL
Bit 7 to 0 Bit Name Initial Value All 0 R/W R/W Description Set the vector address.
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Section 20 Flash Memory
20.4
On-Board Programming Mode
When the pin is set in on-board programming mode and the reset start is executed, the on-board programming state that can program/erase the on-chip flash memory is entered. On-board programming mode has three operating modes: user program mode, user boot mode, and boot mode. For details of the pin setting for entering each mode, see table 20.1. For details of the state transition of each mode for flash memory, see figure 20.2. 20.4.1 Boot Mode
Boot mode executes programming/erasing user MAT and user boot MAT by means of the control command and program data transmitted from the host using the on-chip SCI. The tool for transmitting the control command and program data must be prepared in the host. The SCI communication mode is set to asynchronous mode. When reset start is executed after this LSI's pin is set in boot mode, the boot program in the microcomputer is initiated. After the SCI bit rate is automatically adjusted, the communication with the host is executed by means of the control command method. The system configuration diagram in boot mode is shown in figure 20.6. For details on the pin setting in boot mode, see table 20.1. The NMI and other interrupts are ignored in boot mode. However, the NMI and other interrupts should be disabled in the user system.
This LSI Control command, analysis execution software (on-chip) Control command, program data Flash memory
Host Boot programming tool and program data
RxD0 On-chip SCI_0 On-chip RAM TxD0
Reply response
Figure 20.6 System Configuration in Boot Mode
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Section 20 Flash Memory
(1)
SCI Interface Setting by Host
When boot mode is initiated, this LSI measures the low period of asynchronous SCI-communication data (H'00), which is transmitted consecutively by the host. The SCI transmit/receive format is set to 8-bit data, 1 stop bit, and no parity. This LSI calculates the bit rate of transmission by the host by means of the measured low period and transmits the bit adjustment end sign (1 byte of H'00) to the host. The host must confirm that this bit adjustment end sign (H'00) has been received normally and transmits 1 byte of H'55 to this LSI. When reception is not executed normally, boot mode is initiated again (reset) and the operation described above must be executed. The bit rate between the host and this LSI is not matched by the bit rate of transmission by the host and system clock frequency of this LSI. To operate the SCI normally, the transfer bit rate of the host must be set to 9,600 bps or 19,200 bps. The system clock frequency, which can automatically adjust the transfer bit rate of the host and the bit rate of this LSI, is shown in table 20.7. Boot mode must be initiated in the range of this system clock.
Start bit
D0
D1
D2
D3
D4
D5
D6
D7
Stop bit
Measure low period (9 bits) (data is H'00)
High period of at least 1 bit
Figure 20.7 Automatic-Bit-Rate Adjustment Operation of SCI Table 20.7 System Clock Frequency for Automatic-Bit-Rate Adjustment by This LSI
Bit Rate of Host 9,600 bps 19,200 bps System Clock Frequency 10 to 26 MHz 16 to 26 MHz
(2)
State Transition Diagram
The overview of the state transition diagram after boot mode is initiated is shown in figure 20.8. 1. Bit rate adjustment After boot mode is initiated, the bit rate of the SCI interface is adjusted with that of the host. 2. Waiting for inquiry set command For inquiries about user-MAT size and configuration, MAT start address, and support state, the required information is transmitted to the host. 3. Automatic erasure of all user MAT and user boot MAT
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Section 20 Flash Memory
After inquiries have finished, all user MAT and user boot MAT are automatically erased. 4. Waiting for programming/erasing command When the program preparation notice is received, the state for waiting program data is entered. The programming start address and program data must be transmitted following the programming command. When programming is finished, the programming start address must be set to H'FFFFFFFF and transmitted. Then the state for waiting program data is returned to the state of programming/erasing command wait. When the erasure preparation notice is received, the state for waiting erase-block data is entered. The erase-block number must be transmitted following the erasing command. When the erasure is finished, the erase-block number must be set to H'FF and transmitted. Then the state for waiting erase-block data is returned to the state for waiting programming/erasing command. The erasure must be used when the specified block is programmed without a reset start after programming is executed in boot mode. When programming can be executed by only one operation, all blocks are erased before the state for waiting programming/erasing/other command is entered. The erasing operation is not required. There are many commands other than programming/erasing. Examples are sum check, blank check (erasure check), and memory read of the user MAT/user boot MAT and acquisition of current status information. Note that memory read of the user MAT/user boot MAT can only read the programmed data after all user MAT/user boot MAT has automatically been erased.
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Section 20 Flash Memory
(Bit rate adjustment) H'00.......H'00 reception H'00 transmission (adjustment completed) Bit rate adjustment 1
Boot mode initiation (reset by boot mode)
p rece H'55
tion
Inquiry command reception 2 Wait for inquiry setting command Inquiry command response
Processing of inquiry setting command
3
All user MAT and user boot MAT erasure
4
Wait for programming/erasing command
Read/check command reception Command response
Processing of read/check command
(Erasure selection command reception) (Erasure end notice) (Program end notice) (Program selection command reception) (Program data transmission) (Erase-block specification)
Wait for erase-block data
Wait for program data
Figure 20.8 Overview of Boot Mode State Transition Diagram
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Section 20 Flash Memory
20.4.2
User Program Mode
The user MAT can be programmed/erased in user program mode. (The user boot MAT cannot be programmed/erased.) Programming/erasing is executed by downloading the program in the microcomputer. The overview flow is shown in figure 20.9. High voltage is applied to internal flash memory during the programming/erasing processing. Therefore, transition to reset or hardware standby must not be executed. Doing so may cause damage or destroy flash memory. If reset is executed accidentally, reset must be released after the reset input period of 100 s, which is longer than usual.
Programming/erasing start When programming, program data is prepared 1. RAM emulation mode must be canceled in advance. Download cannot be executed in emulation mode. 2. When the program data is made by means of emulation, change the download destination by the FTDAR register. Note that the download area and the emulation area will overlap if FTDAR is H'04. 3. Set FLSHE bit in SYSCR2 register to 1. 4. Programming/erasing is executed only in the on-chip RAM. However, if program data is in a consecutive area and can be accessed by the MOV.B instruction of the CPU like SRAM or ROM, the program data can be in an external space. 5. After programming/erasing is finished, the FLSHE bit is cleared to 0 and protected.
FLSHE = 1? Yes
Programming/erasing procedure program is transferred to the on-chip RAM and executed
No
Programming/erasing end
Figure 20.9 Programming/Erasing Overview Flow
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Section 20 Flash Memory
(1)
On-Chip RAM Address Map when Programming/Erasing Is Executed
Parts of the procedure program that are made by the user, like download request, programming/erasing procedure, and determination of the result, must be executed in the on-chip RAM. The on-chip program that is to be downloaded is all in the on-chip RAM. Note that area in the on-chip RAM must be controlled so that these parts do not overlap. Figure 20.10 shows the program area to be downloaded.

RAM emulation area or area that can be used by user DPFR (Return value: 1 byte) System use area (15 bytes) Programming/erasing program entry Initialization program entry Initialization + programming program or Initialization + erasing program RAM emulation area or area that can be used by user FTDAR setting + 16 FTDAR setting + 32 Address RAMTOP (H'FF7000)
FTDAR setting
Area to be downloaded (Size: 2 kbytes) Unusable area in programming/erasing processing period
FTDAR setting + 2k
RAMEND (H'FFEFBF)
Figure 20.10 RAM Map when Programming/Erasing Is Executed
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Section 20 Flash Memory
(2)
Programming Procedure in User Program Mode
The procedures for download, initialization, and programming are shown in figure 20.11.
Start programming procedure program Select on-chip program to be downloaded and specify download destination by FTDAR Set FKEY to H'A5
1 Disable interrupts and bus master operation other than CPU Set FKEY to H'5A
(a)
(i)
(b)
(j)
Set SCO to 1 and execute download
(c)
Download
Set parameters to ER1 and ER0 (FMPAR and FMPDR)
(k)
Programming
Clear FKEY to 0
(d) (e) No Download error processing
Programming JSR FTDAR setting + 16 FPFR = 0? Yes
(l) (m)
DPFR = 0? Yes
Set the FPEFEQ and FUBRA parameters
(f) No (g) (h) No Required data programming is completed? Yes
No Clear FKEY and programming error processing (n)
Initialization
Initialization JSR FTDAR setting + 32 FPFR = 0? Yes 1
Clear FKEY to 0 End programming procedure program
(o)
Initialization error processing
Figure 20.11 Programming Procedure The procedure program must be executed in an area other than the flash memory to be programmed. Especially the part where the SCO bit in FCCS is set to 1 for downloading must be executed in the on-chip RAM. The area that can be executed in the steps of the user procedure program (on-chip RAM, user MAT, and external space) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data. The following description assumes the area to be programmed on the user MAT is erased and program data is prepared in the consecutive area. When erasing is not executed, erasing is executed before writing.
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Section 20 Flash Memory
128-byte programming is performed in one program processing. When more than 128-byte programming is performed, programming destination address/program data parameter is updated in 128-byte units and programming is repeated. When less than 128-byte programming is performed, data must total 128 bytes by adding the invalid data. If the dummy data to be added is H'FF, the program processing period can be shortened. (a) Select the on-chip program to be downloaded and specify a download destination When the PPVS bit of FPCS is set to 1, the programming program is selected. Several programming/erasing programs cannot be selected at one time. If several programs are set, download is not performed and a download error is returned to the SS bit in DPFR. The start address of a download destination is specified by FTDAR. (b) Program H'A5 in FKEY If H'A5 is not written to FKEY for protection, 1 cannot be written to the SCO bit for download request. (c) 1 is written to the SCO bit of FCCS and then download is executed. To write 1 to the SCO bit, the following conditions must be satisfied. RAM emulation mode is canceled. H'A5 is written to FKEY. The SCO bit writing is executed in the on-chip RAM. When the SCO bit is set to 1, download is started automatically. When the program execution processing returned to the user procedure program, the SCO is cleared to 0. Therefore, the SCO bit cannot be confirmed to be 1 in the user procedure program. The download result can be confirmed only by the return value of DPFR. Before the SCO bit is set to 1, incorrect determination must be prevented by setting the one byte of the start address (to be used as DPFR) specified by FTDAR to a value other than the return value (H'FF). When download is executed, particular interrupt processing, which is accompanied by the bank switch as described below, is performed as an internal microcomputer processing. Four NOP instructions are executed immediately after the instructions that set the SCO bit to 1. The user-MAT space is switched to the on-chip program storage area. After the selection condition of the download program and the FTDAR setting are checked, the transfer processing to the on-chip RAM specified by FTDAR is executed. FPCS, FECS, and the SCO bit in FCCS are cleared to 0. The return value is set to the DPFR parameter.
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Section 20 Flash Memory
After the on-chip program storage area is returned to the user-MAT space, the processing returns to user procedure program. The notes on download are as follows. In the download processing, the values of general registers of the CPU are held. In the download processing, any interrupts are not accepted. However, NMI interrupt requests are held. Therefore, when the user procedure program is returned, the NMI interrupts occur. When hardware standby mode is entered during download processing, the normal download cannot be guaranteed in the on-chip RAM. Therefore, download must be executed again. Since a stack area of a maximum 128-byte is used, the area must be allocated before setting the SCO bit to 1. If a flash memory access by the DTC is requested during downloading, the operation cannot be guaranteed. Therefore, an access request by the DTC must not be generated. (d) FKEY is cleared to H'00 for protection. (e) The value of the DPFR parameter must be checked and the download result must be confirmed. Check the value of the DPFR parameter (one byte of start address of the download destination specified by FTDAR). If the value is H'00, download has been performed normally. If the value is not H'00, the source that caused download to fail can be investigated by the description below. If the value of the DPFR parameter is the same as before downloading (e.g. H'FF), the address setting of the download destination in FTDAR may be abnormal. In this case, confirm the setting of the TDER bit (bit 7) in FTDAR. If the value of the DPFR parameter is different from before downloading, check the SS bit and the FK bit in the DPFR parameter to ensure that the download program selection and FKEY setting were normal, respectively. (f) The operating frequency and user branch destination are set to the FPEFEQ and FUBRA parameters for initialization. The current frequency of the CPU clock is set to the FPEFEQ parameter (general register ER0).
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Section 20 Flash Memory
For the settable range of the FPEFEQ parameter, see section 24.4.2, Clock Timing. When the frequency is set to out of this range, an error is returned to the FPFR parameter of the initialization program and initialization is not performed. For details on the frequency setting, see the description in 20.3.2 (2) (a), Flash programming/erasing frequency parameter (FPEFEQ: General register ER0 of CPU). The start address of the user branch destination is set to the FUBRA parameter (general register ER1). This LSI requires FUBRA to be set to 0. When user branch is executed, the branch destination should be other than the user MAT to be programmed. The setting to the area of the downloaded on-chip program is impossible. Use the RTS instruction to return from the user branch processing. For details, see Flash User Branch Address Setting Parameter (FUBRA: General register ER1 of CPU) in section 20.3.2 (2) (b), Flash user branch address setting parameter (FUBRA: General register ER1 of CPU). (g) Initialization When a programming program is downloaded, the initialization program is also downloaded to the on-chip RAM. There is an entry point of the initialization program in the area from the start address specified by FTDAR + 32 bytes of the on-chip RAM. The subroutine is called and initialization is executed by using the following steps. MOV.L JSR NOP #DLTOP+32,ER2 @ER2 ; Set entry address to ER2 ; Call initialization routine
The general registers other than R0L are held in the initialization program. R0L is a return value of the FPFR parameter. Since the stack area is used in the initialization program, a stack area of a maximum 128 bytes must be allocated in RAM. Interrupts can be accepted during the execution of the initialization program. The program storage area and stack area in the on-chip RAM and register values must not be destroyed. (h) The return value in the initialization program, FPFR (general register R0L) is determined. (i) All interrupts and the use of a bus master other than the CPU are prohibited. The specified voltage is applied for the specified time when programming or erasing. If interrupts occur or the bus mastership is moved to other than the CPU during this time, the voltage for more than the specified time will be applied and flash memory may be damaged. Therefore, interrupts and movement of bus mastership other than the CPU are prohibited. To prohibit the interrupt, bit 7 (I) in the condition code register (CCR) of the CPU should be set to B'1 in interrupt control mode 0. Then interrupts other than NMI are held and are not executed.
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Section 20 Flash Memory
The NMI interrupts must be masked within the user system. The interrupts that are held must be executed in the user branch destination or after all program processing. When the interrupt processing is executed in the user branch destination, prohibit the interrupt in the CCR register of the CPU after the process completes. When the movement of bus mastership to other than the CPU, error protection state is entered. Therefore, prevent other than the CPU from getting bus, as is the case with interrupt prohibition. (j) FKEY must be set to H'5A and the user MAT must be prepared for programming. (k) The parameter which is required for programming is set. The start address of the programming destination of the user MAT (FMPAR) is set to general register ER1. The start address of the program data area (FMPDR) is set to general register ER0. Example of the FMPAR setting FMPAR specifies the programming destination address. When an address other than one in the user MAT area is specified, even if the programming program is executed, programming is not executed and an error is returned to the return value parameter FPFR. Since the unit is 128 bytes, the lower eight bits (A7 to A0) must be H'00 or H'80 as the boundary of 128 bytes. Example of the FMPDR setting When the storage destination of the program data is flash memory, even if the program execution routine is executed, programming is not executed and an error is returned to the FPFR parameter. In this case, the program data must be transferred to the on-chip RAM and then programming must be executed. (l) Programming There is an entry point of the programming program in the area from the start address specified by FTDAR + 16 bytes of the on-chip RAM. The subroutine is called and programming is executed by using the following steps. MOV.L JSR NOP #DLTOP+16,ER2 @ER2 ; Set entry address to ER2 ; Call programming routine
The general registers other than R0L are held in the programming program. R0L is a return value of the FPFR parameter.
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Section 20 Flash Memory
Since the stack area is used in the programming program, a stack area of a maximum 128 bytes must be allocated in RAM (m) The return value in the programming program, FPFR (general register R0L) is determined. (n) Determine whether programming of the necessary data has finished. If more than 128 bytes of data are to be programmed, specify FMPAR and FMPDR in 128byte units, and repeat steps (l) to (n). Increment the programming destination address by 128 bytes and update the programming data pointer correctly. If an address which has already been programmed is written to again, not only will a programming error occur, but also flash memory will be damaged. (o) After programming finishes, clear FKEY and specify software protection. If this LSI is restarted by a power-on reset immediately after user MAT programming has finished, secure a reset period (period of RES = 0) of 100 s or longer, which is longer than usual. (3) Erasing Procedure in User Program Mode
The procedures for download, initialization, and erasing are shown in figure 20.12.
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Section 20 Flash Memory
Start erasing procedure program Select on-chip program to be downloaded Set FKEY to H'A5 Set SCO to 1 and execute download
1 Disable interrupts and bus master operation other than CPU Set FKEY to H'5A
(a)
Download
Set FEBS parameter Erasing JSR FTDAR setting + 16 FPFR = 0? Yes No Required block erasing is completed? Yes Clear FKEY to 0
(b)
Clear FKEY to 0
(c) (d) No
DPFR = 0? Yes
No Download error processing
Erasing
Clear FKEY and erasing error processing (e)
Set FPEFEQ and FUBRA parameter
Initialization
Initialization JSR FTDAR setting + 32 FPFR = 0 ? Yes 1
(f)
No Initialization error processing
End erasing procedure program
Figure 20.12 Erasing Procedure The procedure program must be executed in an area other than the user MAT to be erased. Especially the part where the SCO bit in FCCS is set to 1 for downloading must be executed in the on-chip RAM. The area that can be executed in the steps of the user procedure program (on-chip RAM, user MAT, and external space) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data. For the downloaded on-chip program area, see the RAM map for programming/erasing in figure 20.10. A single divided block is erased by one erasing processing. For block divisions, see figure 20.4. To erase two or more blocks, update the erase block number and perform the erasing processing for each block.
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Section 20 Flash Memory
(a) Select the on-chip program to be downloaded Set the EPVB bit in FECS to 1. Several programming/erasing programs cannot be selected at one time. If several programs are set, download is not performed and a download error is reported to the SS bit in the DPFR parameter. Specify the start address of a download destination by FTDAR. The procedures to be carried out after setting FKEY, e.g. download and initialization, are the same as those in the programming procedure. For details, see Programming Procedure in User Program Mode in section 20.4.2, (2), Programming Procedure in User Program Mode. The procedures after setting parameters for erasing programs are as follows: (b) Set the FEBS parameter necessary for erasure Set the erase block number of the user MAT in the flash erase block select parameter FEBS (general register ER0). If a value other than an erase block number of the user MAT is set, no block is erased even though the erasing program is executed, and an error is returned to the return value parameter FPFR. (c) Erasure Similar to as in programming, there is an entry point of the erasing program in the area from the start address of a download destination specified by FTDAR + 16 bytes of on-chip RAM. The subroutine is called and erasing is executed by using the following steps. MOV.L JSR NOP * * * #DLTOP+16,ER2 @ER2 ; Set entry address to ER2 ; Call erasing routine
The general registers other than R0L are held in the erasing program. R0L is a return value of the FPFR parameter. Since the stack area is used in the erasing program, a stack area of maximum 128 bytes must be allocated in RAM (d) The return value in the erasing program, FPFR (general register R0L) is determined. (e) Determine whether erasure of the necessary blocks has completed. If more than one block is to be erased, update the FEBS parameter and repeat steps (b) to (e). Blocks that have already been erased can be erased again.
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Section 20 Flash Memory
(f) After erasure completes, clear FKEY and specify software protection. If this LSI is restarted by a power-on reset immediately after user MAT erasure has completed, secure a reset period (period of RES = 0) of 100 s or longer, which is longer than usual. (4) Erasing and Programming Procedure in User Program Mode
By changing the on-chip RAM address of the download destination in FTDAR, the erasing program and programming program can be downloaded to separate on-chip RAM areas. Figure 20.13 shows an example of repetitively executing RAM emulation, erasing, and programming.
1 Start procedure program Set FTDAR to H'02 (Specify H'FFB000 as download destination) Enter RAM emulation mode and tune data in on-chip RAM Cancel RAM emulation mode
Erasing program download
Emulation/ Erasing/ Programming
Download erasing program
Initialize erasing program
Erase relevant block (execute erasing program) Set FMPDR to H'FFD000 to program relevant block (execute programming program)
Set FTDAR to H'03 (Specify H'FFC000 as download destination)
Programming program download
Download programming program Initialize programming program
Confirm operation
End ? No Yes 1 End procedure program
Figure 20.13 Sample Procedure of Repeating RAM Emulation, Erasing, and Programming (Overview) In the above example, the erasing program and programming program are downloaded to areas excluding the 4 kbytes (H'FFD000 to H'FFDFFF) in the on-chip RAM. Download and
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Section 20 Flash Memory
initialization are performed only once at the beginning. In this kind of operation, note the following: Be careful not to damage on-chip RAM with overlapped settings. In addition to the RAM emulation area, erasing program area, and programming program area, areas for the user procedure programs, work area, and stack area are reserved in onchip RAM. Do not make settings that will overwrite data in these areas. Be sure to initialize both the erasing program and programming program. Initialization by setting the FPEFEQ parameter must be performed for both the erasing program and the programming program. Initialization must be executed for both entry addresses: (download start address for erasing program) + 32 bytes (H'FFB020 in this example) and (download start address for programming program) + 32 bytes (H'FFC020 in this example). 20.4.3 User Boot Mode
This LSI has user boot mode which is initiated with different mode pin settings than those in user program mode or boot mode. User boot mode is a user-arbitrary boot mode, unlike boot mode that uses the on-chip SCI. Only the user MAT can be programmed/erased in user boot mode. Programming/erasing of the user boot MAT is only enabled in boot mode or programmer mode. (1) User Boot Mode Initiation
For the mode pin settings to start up user boot mode, see table 20.1. When the reset start is executed in user boot mode, the built-in check routine runs. The user MAT and user boot MAT states are checked by this check routine. While the check routine is running, NMI and all other interrupts cannot be accepted. Next, processing starts from the execution start address of the reset vector in the user boot MAT. At this point, H'AA is set to FMATS because the execution MAT is the user boot MAT. (2) User MAT Programming in User Boot Mode
For programming the user MAT in user boot mode, additional processing made by setting FMATS are required: switching from user-boot-MAT selection state to user-MAT selection state, and switching back to user-boot-MAT selection state after programming completes. Figure 20.14 shows the procedure for programming the user MAT in user boot mode.
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Section 20 Flash Memory
Start programming procedure program Select on-chip program to be downloaded and specify download destination by FTDAR Set FKEY to H'A5 Set SCO to 1 and execute download Clear FKEY to 0
User-MAT selection state Programming
1
Set FMATS to value other than H'AA to select user MAT
MAT switchover
Set FKEY to H'A5 Set parameter to ER0 and ER1 (FMPAR and FMPDR) Programming JSR FTDAR setting + 16 FPFR = 0 ?
User-boot-MAT selection state
Download
DPFR = 0 ? Yes
No Download error processing
Set the FPEFEQ and FUBRA parameters
Initialization
No Yes Clear FKEY and programming error processing
Initialization JSR FTDAR setting + 32 FPFR = 0 ?
No
Required data programming is completed?
Yes No Clear FKEY to 0 MAT switchover
Yes Initialization error processing
Disable interrupts and bus master operation other than CPU 1 User-boot-MAT selection state
Set FMATS to H'AA to select user boot MAT
End programming procedure program Note: The MAT must be switched by FMATS to perform the programming error processing in the user boot MAT.
Figure 20.14 Procedure for Programming User MAT in User Boot Mode The difference between the programming procedures in user program mode and user boot mode is whether the MAT is switched or not as shown in figure 20.14. In user boot mode, the user boot MAT can be seen in the flash memory space with the user MAT hidden in the background. The user MAT and user boot MAT are switched only while the user MAT is being programmed. Because the user boot MAT is hidden while the user MAT is being programmed, the procedure program must be located in an area other than flash memory. After programming completes, switch the MATs again to return to the first state. MAT switching is enabled by writing a specific value to FMATS. However note that while the MATs are being switched, the LSI is in an unstable state, e.g. access to a MAT is not allowed until MAT switching is completed, and if an interrupt occurs, from which MAT the interrupt vector is
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Section 20 Flash Memory
read is undetermined. Perform MAT switching in accordance with the description in section 20.7, Switching between User MAT and User Boot MAT. Except for MAT switching, the programming procedure is the same as that in user program mode. The area that can be executed in the steps of the user procedure program (on-chip RAM and user MAT) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data. (3) User MAT Erasing in User Boot Mode
For erasing the user MAT in user boot mode, additional processing made by setting FMATS are required: switching from user-boot-MAT selection state to user-MAT selection state, and switching back to user-boot-MAT selection state after erasing completes. Figure 20.15 shows the procedure for erasing the user MAT in user boot mode.
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Section 20 Flash Memory
Start erasing procedure program Select on-chip program to be downloaded Set FKEY to H'A5 Set SCO to 1 and execute download Clear FKEY to 0 DPFR = 0 ?
1
Set FMATS to value other than H'AA to select user MAT
MAT switchover
Set FKEY to H'A5
User-boot-MAT selection state
Download
Set FEBS parameter
User-MAT selection state
No Yes Download error processing
Erasing
Programming JSR FTDAR setting + 16 FPFR = 0 ?
Set the FPEFEQ and FUBRA parameters
No Yes Clear FKEY and erasing error processing
Initialization
Initialization JSR FTDAR setting + 32 FPFR = 0 ?
No
Required block erasing is completed? Yes
No
Yes Initialization error processing
Clear FKEY to 0 Set FMATS to H'AA to select user boot MAT MAT switchover
Disable interrupts and bus master operation other than CPU 1 User-boot-MAT selection state
End erasing procedure program Note: The MAT must be switched by FMATS to perform the erasing error processing in the user boot MAT.
Figure 20.15 Procedure for Erasing User MAT in User Boot Mode The difference between the erasing procedures in user program mode and user boot mode depends on whether the MAT is switched or not as shown in figure 20.15. MAT switching is enabled by writing a specific value to FMATS. However note that while the MATs are being switched, the LSI is in an unstable state, e.g. access to a MAT is not allowed until MAT switching is completed, and if an interrupt occurs, from which MAT the interrupt vector is read is undetermined. Perform MAT switching in accordance with the description in section 20.7, Switching between User MAT and User Boot MAT. Except for MAT switching, the erasing procedure is the same as that in user program mode. The area that can be executed in the steps of the user procedure program (on-chip RAM and user MAT) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data.
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Section 20 Flash Memory
20.4.4
Procedure Program and Storable Area for Programming Data
In the descriptions in the previous section, the programming/erasing procedure programs and storable areas for program data are assumed to be in the on-chip RAM. However, the program and the data can be stored in and executed from other areas, such as part of flash memory which is not to be programmed or erased, or somewhere in the external address space. (1) Conditions that Apply to Programming/Erasing
1. The on-chip programming/erasing program is downloaded from the address in the on-chip RAM specified by FTDAR, therefore, this area is not available for use. 2. The on-chip programming/erasing program will use 128 bytes as a stack. So, make sure that this area is secured. 3. Download by setting the SCO bit to 1 will lead to switching of the MAT. If, therefore, this operation is used, it should be executed from the on-chip RAM. 4. The flash memory is accessible until the start of programming or erasing, that is, until the result of downloading has been determined. When in single-chip mode in which the external address space is not accessible, the required procedure programs, NMI handling vector, NMI handler, and user branch program should be transferred to the on-chip RAM before programming/erasing of the flash memory starts. 5. The flash memory is not accessible during programming/erasing operations, therefore, the operation program is downloaded to the on-chip RAM to be executed. The NMI-handling vector and programs such as that which activate the operation program, and NMI handler should thus be stored in on-chip memory other than flash memory or the external address space. 6. After programming/erasing, the flash memory should be inhibited until FKEY is cleared. The reset state (RES = 0) must be in place for more than 100 s when the LSI mode is changed to reset on completion of a programming/erasing operation. Transitions to the reset state, and hardware standby mode are inhibited during programming/erasing. When the reset signal is accidentally input to the chip, a longer period in the reset state than usual (100 s) is needed before the reset signal is released. 7. Switching of the MATs by FMATS should be needed when programming/erasing of the user MAT is operated in user-boot mode. The program which switches the MATs should be executed from the on-chip RAM. See section 20.7, Switching between User MAT and User Boot MAT. Please make sure you know which MAT is selected when switching between them. 8. When the data storable area indicated by programming parameter FMPDR is within the flash memory area, an error will occur even when the data stored is normal. Therefore, the data
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Section 20 Flash Memory
should be transferred to the on-chip RAM to place the address that FMPDR indicates in an area other than the flash memory. In consideration of these conditions, there are three factors; operating mode, the bank structure of the user MAT, and operations. The areas in which the programming data can be stored for execution are shown in tables. Table 20.8 Executable MAT
Initiated Mode Operation Programming Erasing Note: * User Program Mode Table 20.9 (1) Table 20.9 (2) Programming/Erasing is possible to user MATs. User Boot Mode* Table 20.9 (3) Table 20.9 (4)
Table 20.9 (1)
Useable Area for Programming in User Program Mode
Storable /Executable Area Selected MAT
Item Storage Area for Program Data Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear
Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area x*
x
x
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Section 20 Flash Memory
Storable /Executable Area
Selected MAT
Item Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine Operation for Inhibit of Interrupt Operation for Writing H'5A to FKEY Operation for Settings of Program Parameter Execution of Programming Determination of Program Result Operation for Program Error Operation for FKEY Clear
Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area
x
x
x
x x x x x x
Note: Transferring the data to the on-chip RAM enables this area to be used.
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Section 20 Flash Memory
Table 20.9 (2)
Useable Area for Erasure in User Program Mode
Storable /Executable Area Selected MAT
Item Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine
Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area
x
x
x
x
x
Operation for Inhibit of Interrupt Operation for Writing H'5A to FKEY Operation for Settings of Erasure Parameter x
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Section 20 Flash Memory
Storable /Executable Area
Selected MAT
Item Execution of Erasure Determination of Erasure Result Operation for Erasure Error Operation for FKEY Clear
Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area x x x x x
Table 20.9 (3)
Useable Area for Programming in User Boot Mode
Storable/Executable Area On-Chip RAM User Boot MAT x*
1
Selected MAT User Boot MAT Embedded Program Storage Area
Item Storage Area for Program Data Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter
User MAT
x
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Section 20 Flash Memory
Storable/Executable Area On-Chip RAM User Boot MAT x
Selected MAT User Boot MAT Embedded Program Storage Area
Item Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine Operation for Interrupt Inhibit Switching MATs by FMATS Operation for Writing H'5A to FKEY Operation for Settings of Program Parameter Execution of Programming Determination of Program Result Operation for Program Error Operation for FKEY Clear Switching MATs by FMATS
User MAT
x
x x x x x x*2 x x
Notes: 1. Transferring the data to the on-chip RAM enables this area to be used. 2. Switching FMATS by a program in the on-chip RAM enables this area to be used.
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Section 20 Flash Memory
Table 20.9 (4)
Useable Area for Erasure in User Boot Mode
Storable/Executable Area User Boot On-Chip RAM MAT Selected MAT User Boot MAT Embedded Program Storage Area
Item Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine Operation for Interrupt Inhibit Switching MATs by FMATS Operation for Writing H'5A to FKEY
User MAT
x
x
x
x x
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Section 20 Flash Memory
Storable/Executable Area Item Operation for Settings of Erasure Parameter Execution of Erasure Determination of Erasure Result Operation for Erasure Error Operation for FKEY Clear Switching MATs by FMATS On-Chip RAM User Boot MAT x User MAT
Selected MAT User Boot MAT Embedded Program Storage Area
x x x* x x
Note: Switching FMATS by a program in the on-chip RAM enables this area to be used.
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Section 20 Flash Memory
20.5
Protection
There are two kinds of flash memory program/erase protection: hardware and software protection. 20.5.1 Hardware Protection
Programming and erasing of flash memory is forcibly disabled or suspended by hardware protection. In this state, the downloading of an on-chip program and initialization are possible. However, an activated program for programming or erasure cannot program or erase locations in a user MAT, and the error in programming/erasing is reported in the parameter FPFR. Table 20.10 Hardware Protection
Function to Be Protected Item Reset/standby protection Description * The program/erase interface registers are initialized in the power-on reset state (including a power-on reset by the WDT) and standby mode and the program/erase-protected state is entered. The reset state will not be entered by a reset using the RES pin unless the RES pin is held low until oscillation has stabilized after power is initially supplied. In the case of a reset during operation, hold the RES pin low for the RES pulse width that is specified in the section on AC characteristics section. If a reset is input during programming or erasure, data values in the flash memory are not guaranteed. In this case, after holding the RES pin low for 100 s or longer, execute erasure and then execute program again. Download Program/Erase
*
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Section 20 Flash Memory
20.5.2
Software Protection
Software protection is set up in any of three ways: by disabling the downloading of on-chip programs for programming and erasing, by means of a key code, and by the RAM-emulation register. Table 20.11 Software Protection
Function to Be Protected Item Protection by the SCO bit Description * The program/erase-protected state is entered by clearing the SCO bit in FCCS which disables the downloading of the programming/erasing programs. Downloading and programming/erasing are disabled unless the required key code is written in FKEY. Different key codes are used for downloading and for programming/erasing. The program/erase-protected state is entered by setting the RAMS bit in the RAM emulation register (RAMER). Download Program/Erase
Protection by the FKEY register
*
Emulation protection *
20.5.3
Error Protection
Error protection is a mechanism for aborting programming or erasure when an error occurs, in the form of the microcomputer entering runaway during programming/erasing of the flash memory or operations that are not according to the established procedures for programming/erasing. Aborting programming or erasure in such cases prevents damage to the flash memory due to excessive programming or erasing. If the microcomputer malfunctions during programming/erasing of the flash memory, the FLER bit in the FCCS register is set to 1 and the error-protection state is entered, and this aborts the programming or erasure.
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Section 20 Flash Memory
The FLER bit is set in the following conditions: 1. When an interrupt such as NMI occurs during programming/erasing. 2. When the flash memory is read during programming/erasing (including a vector read or an instruction fetch). 3. When a SLEEP instruction (including software-standby mode or watch mode) is executed during programming/erasing. 4. When a bus master other than the CPU such as the DTC gets bus mastership during programming/erasing. Error protection is cancelled only by a power-on reset or by hardware-standby mode. Note that the reset should only be released after providing a reset input period of 100 s, which is longer than usual. Since high voltages are applied during programming/erasing of the flash memory, some voltage may remain after the error-protection state has been entered. For this reason, it is necessary to reduce the risk of damage to the flash memory by extending the reset period so that the charge is released. The state-transition diagram in figure 20.16 shows transitions to and from the error-protection state.
Program mode Erase mode Read disabled Programming/erasing enabled FLER = 0
RES = 0 or STBY = 0
Er ror or oc =0 cu (S 0 oft rre ES R Y= wa d TB reS or wa stan tch db ym mo de ode )
Reset or standby (Hardware protection) Read disabled Programming/erasing disabled FLER = 0 RES = 0 or STBY = 0 Program/erase interface register is in its initial state.
Error occurrence
Error protection mode Read enabled Programming/erasing disabled FLER = 1
Software-standby mode or watch mode Cancel software-standby mode or watch mode
Error-protection mode (Software-standby mode or watch mode) Read disabled programming/erasing disabled FLER = 1 Program/erase interface register is in its initial state.
Figure 20.16 Transitions to Error-Protection State
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Section 20 Flash Memory
20.6
Flash Memory Emulation in RAM
To provide real-time emulation in RAM of data that is to be written to the flash memory, a part of the RAM can be overlapped on an area of flash memory (user MAT) that has been specified by the RAM emulation register (RAMER). The RAM is accessible in both the user MAT area specified by RAMER and as the RAM area that has been overlapped on the user MAT area. Such emulation is possible in both user mode and user-program mode. Figures 20.17 and 20.18 show an example of the emulation of real-time programming of the user MAT area.
Start of emulation program Set RAMER
Write the data for tuning to the overlapped RAM area Execute application program No
Tuning OK? Yes Cancel RAMER setting
Program the user MAT with the emulated block
End of emulation program
Figure 20.17 Emulation of Flash Memory in RAM
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Section 20 Flash Memory
This area is accessible as both a RAM area and as a flash memory area.
H'00000 H'01000 H'02000 H'03000 H'04000 H'05000 H'06000 H'07000 H'08000
EB0 EB1 EB2 EB3 EB4 EB5 EB6 EB7 H'FFD000 H'FFDFFF H'FF7000
Flash memory (user MAT)
On-chip RAM
EB8 to EB15* H'7FFFF* H'FFEFBF
Note: The H8S/2551 and H8S/2505 flash memory user MATs are allocated address H'00000 to H'5FFFF and divided into EB0 to EB13 erasure blocks.
Figure 20.18 Example of a RAM-Overlap Operation Figure 20.18 shows an example of an overlap on block area EB0 of the flash memory. Emulation is possible for a single area selected from among the eight areas, from EB0 to EB7, of user MAT bank 0. The area is selected by the setting of the RAM2 to RAM0 bits in the RAMER. 1. To overlap a part of the RAM on area EB0, to allow real-time programming of the data for this area, set the RAMS bit in RAMER to 1, and each of the RAM2 to RAM0 bits to 0. 2. Real-time programming is carried out using the overlapped area of RAM. In programming or erasing the user MAT, it is necessary to run a program that implements a series of procedural steps, including the downloading of an on-chip program. In this process, the overlaid RAM area and the area where the on-chip program is to be downloaded overlap. Therefore, the data that is to be programmed must be saved beforehand in an area that is not used by the system. Figure 20.19 shows an example of programming of the data, after emulation has been completed, to the EB0 area in the user MAT.
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Section 20 Flash Memory
H'00000 H'01000 H'02000 H'03000 H'04000 H'05000 H'06000 H'07000 H'08000
EB0 EB1 EB2 EB3 EB4 EB5 EB6 EB7
(1) Cancel the emulation mode. (2) Move tuned data from the operlap area to the area with no programming/erasing data. (3) Transfer the program/erase-procedure program. (4) Download the on-chip programming/erasing programs. (5) Execute programming after erasing, as necessary.
H'FFC000
Download area
Flash memory (user MAT) EB8 to EB15*
Area for the programming-procedure program Copy of the tuned data
H'FFC800 H'FFD000 H'FFDFFF
On-chip RAM
H'7FFFF*
H'FFEFBF
Note: The H8S/2551 and H8S/2505 flash memory user MATs are allocated address H'00000 to H'5FFFF and divided into EB0 to EB13 erasure blocks.
Figure 20.19 Programming of the Data after Tuning 1. After the data to be programmed has fixed values, clear the RAMS bit to cancel the overlap of RAM. 2. Move the fixed programmed data in the overlap area in the RAM to the area to which the programming/erasing program created by the user is transferred and outside the area in which on-chip programs are downloaded. 3. Transfer the user-created programming/erasing-procedure program to the RAM. 4. Run the programming/erasing-procedure program on the RAM and download the on-chip programming/erasing program. 5. When the EB0 area of the user MAT has not been erased, the programming program must be downloaded after erasing. Set the parameters FMPAR and FMPDR in the data to be programmed so that the tuned data that has been saved is designated, and execute programming. Note: Setting the RAMS bit to 1 puts all the blocks in the flash MAT into a program/eraseprotected state regardless of the values of the RAM2 to RAM0 bits (emulation protection). In this state, downloading of the on-chip programs is also disabled, so clear the RAMS bit before actual programming or erasure.
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Section 20 Flash Memory
20.7
Switching between User MAT and User Boot MAT
It is possible to alternate between the user MAT and user boot MAT. However, the following procedure is required because these MATs are allocated to address 0. (Switching to the user boot MAT disables programming and erasing. Programming of the user boot MAT should take place in boot mode or programmer mode.) 1. MAT switching by FMATS should always be executed from the on-chip RAM. 2. To ensure that the MAT that has been switched to is accessible, execute four NOP instructions in the on-chip RAM immediately after writing to FMATS of the on-chip RAM (this prevents access to the flash memory during MAT switching). 3. If an interrupt has occurred during switching, there is no guarantee of which memory MAT is being accessed. Always mask the maskable interrupts before switching between MATs. In addition, configure the system so that NMI interrupts do not occur during MAT switching. 4. After the MATs have been switched, take care because the interrupt vector table will also have been switched. If interrupt processing is to be the same before and after MAT switching, transfer the interrupt-processing routines to the on-chip RAM, and use the settings of FVACR and FVADR to place the interrupt-vector table in the on-chip RAM. 5. Memory sizes of the user MAT and user boot MAT are different. When accessing the user boot MAT, do not access addresses above the top of its 8-kbyte memory space. If access goes beyond the 8-kbyte space, the values read are undefined.

Procedure for switching to the user boot MAT Procedure for switching to the user MAT Procedure for switching to the user boot MAT (1) Mask interrupts (2) Write H'AA to FMATS. (3) Execute four NOP instructions before accessing the user boot MAT. Procedure for switching to the user MAT (1) Mask interrupts (2) Write a value other than H'AA to FMATS. (3) Execute four NOP instructions before accessing the user MAT.

Figure 20.20 Switching between the User MAT and User Boot MAT
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Section 20 Flash Memory
20.8
Usage Notes
1. Download time of on-chip program The programming program that includes the initialization routine and the erasing program that includes the initialization routine are each 2 kbytes or less. Accordingly, when the CPU clock frequency is 25 MHz, the download for each program takes approximately 130 s at maximum. 2. Write to flash-memory related registers by DTC While an instruction in on-chip RAM is being executed, the DTC can write to the SCO bit in FCCS that is used for a download request or FMATS that is used for MAT switching. Make sure that these registers are not accidentally written to, otherwise an on-chip program may be downloaded and damage RAM or a MAT switchover may occur and the CPU may get out of control. Do not use DTC to program FLASH-related registers. 3. Compatibility with programming/erasing program of conventional F-ZTAT H8S microcomputer A programming/erasing program for flash memory used in the conventional F-ZTAT H8S microcomputer which does not support download of the on-chip program by an SCO transfer request cannot run in this LSI. Be sure to download the on-chip program to execute programming/erasing of flash memory in this LSI. 4. Monitoring runaway by WDT Unlike the conventional F-ZTAT H8S microcomputer, no countermeasures are available for a runaway by WDT during programming/erasing by the downloaded on-chip program. Prepare countermeasures (e.g. use of the user branch routine or the periodic timer interrupts) for WDT while taking the programming/erasing time into consideration as required.
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Section 20 Flash Memory
20.9
Programmer Mode
Along with its on-board programming mode, this LSI also has a programmer mode as a further mode for the writing and erasing of programs and data. In the programmer mode, a generalpurpose PROM programmer can freely be used to write programs to the on-chip ROM. Program/erase is possible on the user MAT and user boot MAT. The PROM programmer must support Renesas Technology microcomputers with 512-kbyte flash memory as a device type. A status-polling system is adopted for operation in automatic program, automatic erase, and status read modes. In the status read mode, details of the system's internal signals are output after execution of automatic programming or automatic erasure. In the programmer mode, provide a 12MHz input-clock signal. 20.9.1 Pin Arrangement of Socket Adapter
Figure 20.21 and figure 20.22 show on-chip ROM memory map and socket adapter corresponding map respectively. Attach the socket adapter to the LSI in the way shown in figure 20.22. As a result, conversion to 40 pins is allowed.
H8S/2556, H8S/2552, H8S/2506 Address in MCU mode H'000000 Address in programmer mode H'00000 Address in MCU mode H'000000 H8S/2551, H8S/2505 Address in programmer mode H'00000 Address in MCU mode H'000000 All products
Address in programmer mode On-chip ROM space H'00000 User boot Mat 8 kbytes
On-chip ROM space
On-chip ROM space User Mat 384 kbytes*
H'001FFF
H'01FFF
User Mat 512 kbytes H'07FFFF H'7FFFF
H'05FFFF
H'5FFFF
Note: * When the ROM programmer which supports microcomputers with 512-kbyte flash memory as a device type is used, address H'60000 to H'7FFFF should be set to 1.
Figure 20.21 On-Chip Flash Memory Map
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Section 20 Flash Memory
H8S/2552, H8S/2556, and H8S/2506 Pin No. FP-144J, FP-144JV 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 4 5 6 7 8 9 10 11 3 1 2 14, 72, 73, 77, 80, 84, 91, 96, 99, 118, 143 12, 54, 67, 86, 87, 90, 92, 94, 97, 98, 110, 112, 117, 144 100 93 95 88 BP-176V* F4 H1 H2 J4 J3 J1 J2 K4 K3 K1 K2 L3 L1 L2 L4 M1 M2 M3 N1 C2 D3 C1 D2 E4 D1 E3 E2 B1 A1 C3 C9, C10, D9, D10, E14, F3, F14, G3, G4, H3, H4, H12, K12, M12, M15, N13, N15, P13, P14, R13, R14, R15, A2 A10, A11, A12, A13, A14, B2, B10, C12, C13, E1, E12, E15, F1, F2, F12, F13, G1, G2, G12, G13, G14, H13, H14, H15, J12, J14, K14, K15, P7, P8, R6, R7, R11, R12 E13 G15 F15 J13 Other than above Note: * HN27C4096HG (40 pins) Pin Name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 D0 D1 D2 D3 D4 D5 D6 D7 CE OE WE Socket adapter (40-pin conversion) Pin No. 21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 39 10 19 18 17 16 15 14 13 12 2 20 3 4 VCC 1, 40 11, 30 5, 6, 7 8 VSS 9 Pin name A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 CE OE WE FWE VCC VSS NC A20 A19
RES XTAL EXTAL VCL NC (OPEN)
Power-on reset circuit Oscillator circuit Capacitor
Legend: FWE: I/O 7 to I/O0: A18 to A0: CE: OE: WE:
Flash write enable Data I/O Address input Chip enable Output enable Write enable
Available only in the H8S/2552 Group and the H8S/2506 Group.
Figure 20.22 Pin arrangement of Socket Adapter
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Section 20 Flash Memory
20.9.2
Programmer Mode Operation
Table 20.12 and table 20.13 show setting procedure of each operation mode in programmer mode and each command used in programmer mode, respectively. * * Memory-read mode: Memory read mode supports reading, in bytes, from the user MAT and user boot MAT Auto-program mode: Auto-program mode supports the simultaneous programming to the user MAT and user boot MAT in 128-byte units. Status polling is used to confirm the completion of automatic programming. Auto-erase mode: Auto-erase mode supports the only automatic erasing of whole user MAT and user boot MAT. Status polling is used to confirm the completion of automatic erasing. Status-read mode: Status polling is used with automatic programming/automatic erasure. Normal completion can be confirmed by reading the signal on the I/O 6. In status-read mode, error information is output when an error has occurred.
* *
Table 20.12 Setting Procedure of each Operation Mode of Programmer Mode
Pin Name Mode Read Output disable Command write Chip disable CE L L L H OE L H H X WE H H L X I/O 7 to 0 Data output Hi-Z Data output Hi-Z A 18 to 0 Ain* X Ain* X
Notes: Chip disable mode is not a standby state; internally, operating state. * Ain indicates that address may be input in auto-program mode.
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Section 20 Flash Memory
Table 20.13 Each Command in Programmer Mode
Command Name Memory-read mode Cycle Count 1+n Target Memory MAT User MAT User boot MAT 129 User MAT User boot MAT 2 User MAT User boot MAT 2 Common to both MAT First Cycle Mode write write write write write write write Address X X X X X X X Data H'00 H'05 H'40 H'45 H'20 H'25 H'71 write X H'71 write X H'20 write WA Din Mode read Second Cycle Address RA Data Dout
Auto- program mode
Auto-erase mode
Status-read mode Notes: 1. 2.
In automatic programming mode, 129 cycles of command programming are required because of simultaneous 128-byte programming. In memory-read mode, the number of cycles varies according to the number of address writing cycles (n).
20.9.3 1.
Memory-Read Mode
On completion of an automatic program, automatic erase, or status read, the LSI enters a command waiting state. To read the contents of memory after these operations, issue the command to change the mode to memory-read mode before reading from the memory. In memory-read mode, command programming can be performed as in the case of command waiting state. Continuous read can be performed after the transition to memory-read mode is made. Transition to the memory-read mode is made after power has been supplied. For the AC characteristics in memory-read mode, see section 20.11, AC Characteristics and Timing in Programmer Mode.
2.
3. 4.
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Section 20 Flash Memory
20.9.4 1. 2. 3.
Auto-Program Mode
4. 5. 6.
7.
8.
In auto-programming mode, 128-byte simultaneous programming is performed. In this process, 128 bytes of data are transferred in succession. Data transfer of 128 bytes must be performed even in the programming of 128 bytes or less. H'FF should be written to those address that are unnecessary written to. Lower seven bits of the address to be transferred should be set to low. When an address other than valid address is input, programming error is occurred, although memory programming operation is started. The memory address transfer is made in the second cycle. A transfer should not be made in the third cycle or later. Do not write commands while programming is in progress. One time automatic programming should be performed for each 128-byte block of address. Additional programming of the block to the address where already programmed is not possible. To confirm the end of automatic programming, check the signal on I/O6 pin. Confirmation in status-read mode is also possible. (Status polling of the I/O7 pin is used to check the end status of automatic programming.) Information on the pins I/O6 and I/O7 is retained until the next command is written. As long as no command is written, the information can be read by enabling the CE and OE.
For details on the AC characteristics in auto-program mode, see section 20.11, AC Characteristics and Timing in Programmer Mode. 20.9.5 1. 2. 3. Auto-Erase Mode
4.
In auto-erase mode, only erasing the entire memory is supported. Command writing should not be preformed during automatic erasing. To confirm the end of automatic erasing, check the signal on the I/O6 pin. Confirmation in status read mode is also possible. (Status polling of the I/O7 pin is used to check the end status of automatic erasure.) Information on the pins I/O6 and I/O7 is retained until the next command is written. As long as other command is written, the information can be read by enabling the CE and OE.
For details on AC characteristics in auto-erase mode, see section 20.11, AC Characteristics and Timing in Programmer Mode.
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Section 20 Flash Memory
20.9.6 1. 2.
Status-Read Mode
Status read mode is used to determine the type of an abnormal end. Use this mode when an abnormal end is occurred in auto-program/auto-erase mode. Return code is maintained until the command programming other than for status-read mode is made.
Table 20.14 lists the return codes of status-read mode. For details on AC characteristics in status-read mode, see section 20.11, AC Characteristics and Timing in Programmer Mode. Table 20.14 Return Codes in Status-Read Mode
Pin Name I/O7 Attribute Normal end indicator 0 I/O6 I/O5 I/O4 Erase error 0 I/O3 I/O2 I/O1 Programming or erasure count exceed 0 Count exceeded: 1 Other: 0 I/O0 Valid address error 0 Valid address error: 1 Other: 0
Command Programerror ming error 0 0
Initial value Description
0
0
Normal Command ProgramErase end: 0 error: 1 ming error: 1 error: 1 Abnormal Other: 0 Other: 0 Other: 0 end: 1
Note: I/O2 and I/O3 are undefined.
20.9.7 1. 2.
Status Polling
The I/O7 status-polling output is a flag that indicates the operating status in auto-program or auto-erase mode. The I/O6 status-polling output is a flag that indicates normal/abnormal end in auto-program or auto-erase mode.
Table 20.15 True Value Table of Status Polling Output
Pin Name I/O7 I/O6 I/O0 to I/O5 In Progress 0 0 0 Abnormal End 1 0 0 0 1 0 Normal End 1 1 0
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Section 20 Flash Memory
20.9.8
Transition Time to Programmer Mode
When oscillation is not stabilized or programmer mode is being set up, no command can be accepted. Transition to memory-read mode is made after the programmer mode set up time has elapsed. See section 20.11, AC Characteristics and Timing in Programmer Mode. 20.9.9 1. 2. Notes on Programmer Mode
3.
4.
5. 6.
To rewrite to an address already programmed, perform automatic programming after automatic erasure. When rewriting is performed to the chip, which is programmed and erased in on-board programming mode with a programmer, it is recommended performing automatic programming after automatic erase. Do not remove the chip from the PROM programmer nor input a reset signal during programming/erasing. As a high voltage is applied to the flash memory during programming/erasing, doing so may damage flash memory permanently. If a reset is input accidentally, the reset must be released after a reset period of 100 s, which is longer than usual. The initial state of a Renesas Technology product at shipment is the erased state. For a product whose history of erasing is undefined, automatic erasure for checking the initial state (erased state) and compensating is recommended. In this LSI, production identification mode such as multipurpose EPROM is not supported; device name can not be automatically set to PROM writer. For the PROM programmer suitable for programmer mode in this LSI and its program version, refer to the instruction manual of the socket adapter.
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Section 20 Flash Memory
20.10
Serial Communication Interface Specification for Boot Mode
Initiating boot mode enables the boot program to communicate with the host by using the internal SCI. The serial communication interface specification is shown below. (1) Status
The boot program has three states. 1. Bit-Rate-Adjustment State In this state, the boot program adjusts the bit rate to communicate with the host. Initiating boot mode enables starting of the boot program and entry to the bit-rate-adjustment state. The program receives the command from the host to adjust the bit rate. After adjusting the bit rate, the program enters the inquiry/selection state. 2. Inquiry/Selection State In this state, the boot program responds to inquiry commands from the host. The device name, clock mode, and bit rate are selected. After selection of these settings, the program is made to enter the programming/erasing state by the command for a transition to the programming/erasing state. The program transfers the libraries required for erasure to the RAM and erases the user MATs and user boot MATs before the transition. 3. Programming/erasing state Programming and erasure by the boot program take place in this state. The boot program is made to transfer the programming/erasing programs to the RAM by commands from the host. Sum checks and blank checks are executed by sending these commands from the host. These boot program states are shown in figure 20.23.
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Section 20 Flash Memory
Reset
Bit-rate-adjustment state
Inquiry/response wait Transition to programming/erasing
Response Inquiry Operations for inquiry and selection Operations for response
Operations for erasing user MATs and user boot MATs
Programming/erasing wait Programming Operations for programming Erasing Operations for erasing Checking
Operations for checking
Figure 20.23 Boot Program States (2) Bit-Rate-Adjustment State
The bit rate is calculated by measuring the period of transfer of a low-level byte (H'00) from the host. The bit rate can be changed by the command for a new bit rate selection. After the bit rate has been adjusted, the boot program enters the inquiry and selection state. The bit-rate-adjustment sequence is shown in figure 20.24.
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Section 20 Flash Memory
Host H'00 (30 times maximum)
Boot Program
Measuring the 1-bit length
H'00 (Completion of adjustment) H'55 H'E6 (Boot response) H'FF (error)
Figure 20.24 Bit-Rate-Adjustment Sequence (3) Communications Protocol
After adjustment of the bit rate, the protocol for communications between the host and the boot program is as shown below. 1. One-byte commands and one-byte responses These commands and responses are comprised of a single byte. These are consists of the inquiries and the ACK for successful completion. 2. n-byte commands or n-byte responses These commands and responses are comprised of n bytes of data. These are selections and responses to inquiries. The amount of programming data is not included under this heading because it is determined in another command. 3. Error response The error response is a response to inquiries that consists of an error response and an error code. The response comes in two bytes. 4. Programming of 128 bytes The size is not specified in commands. The size of n is indicated in response to the programming unit inquiry. 5. Memory read response This response consists of four bytes of data.
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Section 20 Flash Memory
One-byte command or one-byte response n-byte Command or n-byte response
Command or response
Data Size Command or response Checksum
Error response Error code Error response
128-byte programming
Address Command
Data (n bytes) Checksum
Memory read response
Size Response
Data Checksum
Figure 20.25 Communication Protocol Format * Command (one byte): Commands including inquiries, selection, programming, erasing, and checking * Response (one byte): Response to an inquiry * Size (one byte): The amount of data for transmission excluding the command, amount of data, and checksum * Checksum (one byte): The checksum is calculated so that the total of all values from the command byte to the SUM byte becomes H'00. * Data (n bytes): Detailed data of a command or response * Error response (one byte): Error response to a command * Error code (one byte): Type of the error * Address (four bytes): Address for programming * Data (n bytes): Data to be programmed (the size is indicated in the response to the programming unit inquiry.) * Size (four bytes): Four-byte response to a memory read (4) Inquiry and Selection States
The boot program returns information from the flash memory in response to the host's inquiry commands and sets the device code, clock mode, and bit rate in response to the host's selection command.
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Section 20 Flash Memory
Inquiry and selection commands are listed below. Table 20.16 Inquiry and Selection Commands
Command H'20 H'10 H'21 H'11 H'22 Command Name Supported Device Inquiry Device Selection Clock Mode Inquiry Clock Mode Selection Multiplication Ratio Inquiry Description Inquiry regarding device codes Selection of device code Inquiry regarding numbers of clock modes and values of each mode Indication of the selected clock mode Inquiry regarding the number of frequencymultiplied clock types, the number of multiplication ratios, and the values of each multiple Inquiry regarding the maximum and minimum values of the main clock and peripheral clocks Inquiry regarding the number of user boot MATs and the start and last addresses of each MAT
H'23 H'24 H'25 H'26 H'27 H'3F H'40 H'4F
Operating Clock Frequency Inquiry User Boot MAT Information Inquiry
User MAT Information Inquiry Inquiry regarding the a number of user MATs and the start and last addresses of each MAT Block for Erasing Information Inquiry regarding the number of blocks and the start Inquiry and last addresses of each block Programming Unit Inquiry New Bit Rate Selection Transition to Programming/Erasing State Boot Program Status Inquiry Inquiry regarding the unit of programming data Selection of new bit rate Erasing of user MAT and user boot MAT, and entry to programming/erasing state Inquiry into the operated status of the boot program
The selection commands, which are device selection (H'10), clock mode selection (H'11), and new bit rate selection (H'3F), should be sent from the host in that order. These commands will certainly be needed. When two or more selection commands are sent at once, the last command will be valid. All of these commands, except for the boot program status inquiry command (H'4F), will be valid until the boot program receives the programming/erasing transition (H'40). The host can choose the needed commands out of the commands and inquiries listed above. The boot program status inquiry command (H'4F) is valid after the boot program has received the programming/erasing transition command (H'40).
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Section 20 Flash Memory
(a) Supported Device Inquiry The boot program will return the device codes of supported devices and the product code in response to the supported device inquiry.
Command H'20
* Command, H'20, (one byte): Inquiry regarding supported devices
Response H'30 Number of characters *** SUM Size Number of devices Product name
Device code
* Response, H'30, (one byte): Response to the supported device inquiry * Size (one byte): Number of bytes to be transmitted, excluding the command, size, and checksum, that is, the amount of data contributes by the number of devices, characters, device codes and product names * Number of devices (one byte): The number of device types supported by the boot program * Number of characters (one byte): The number of characters in the device codes and boot program's name * Device code (four bytes): ASCII code of the supporting product * Product name (n bytes): Type name of the boot program in ASCII-coded characters * SUM (one byte): Checksum The checksum is calculated so that the total number of all values from the command byte to the SUM byte becomes H'00. (b) Device Selection The boot program will set the supported device to the specified device code. The program will return the selected device code in response to the inquiry after this setting has been made.
Command H'10 Size Device code SUM
* Command, H'10, (one byte): Device selection * Size (one byte): Amount of device-code data This is fixed at 4 * Device code (four bytes): Device code (ASCII code) returned in response to the supported device inquiry
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Section 20 Flash Memory
* SUM (one byte): Checksum
Response H'06
* Response, H'06, (one byte): Response to the device selection command ACK will be returned when the device code matches.
Error response H'90 ERROR
* Error response, H'90, (one byte): Error response to the device selection command ERROR : (one byte): Error code H'11: Sum check error H'21: Device code error, that is, the device code does not match (c) Clock Mode Inquiry The boot program will return the supported clock modes in response to the clock mode inquiry.
Command H'21
* Command, H'21, (one byte): Inquiry regarding clock mode
Response H'31 Size Number of modes Mode *** SUM
* Response, H'31, (one byte): Response to the clock-mode inquiry * Size (one byte): Amount of data that represents the number of modes and modes * Number of clock modes (one byte): The number of supported clock modes H'00 indicates no clock mode or the device allows to read the clock mode. * Mode (one byte): Values of the supported clock modes (i.e. H'01 means clock mode 1.) * SUM (one byte): Checksum (d) Clock Mode Selection The boot program will set the specified clock mode. The program will return the selected clockmode information after this setting has been made. The clock-mode selection command should be sent after the device-selection commands.
Command H'11 Size Mode SUM
* * * *
Command, H'11, (one byte): Selection of clock mode Size (one byte): Amount of data that represents the modes Mode (one byte): A clock mode returned in reply to the supported clock mode inquiry. SUM (one byte): Checksum
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Section 20 Flash Memory
Response
H'06
* Response, H'06, (one byte): Response to the clock mode selection command ACK will be returned when the clock mode matches.
Error Response H'91 ERROR
* Error response, H'91, (one byte) : Error response to the clock mode selection command * ERROR, (one byte): Error code H'11: Checksum error H'22: Clock mode error, that is, the clock mode does not match. Even if the clock mode numbers are H'00 and H'01 by a clock mode inquiry, the clock mode must be selected using these respective values. (e) Multiplication Ratio Inquiry The boot program will return the supported multiplication and division ratios.
Command H'22
* Command, H'22, (one byte): Inquiry regarding multiplication ratio
Response H'32 Number of multiplication ratios *** SUM Size Multiplication ratio Number of types ***
* Response, H'32, (one byte): Response to the multiplication ratio inquiry * Size (one byte): The amount of data that represents the number of clock sources and multiplication ratios and the multiplication ratios * Number of types (one byte): The number of supported multiplied clock types (e.g. when there are two multiplied clock types, which are the main and peripheral clocks, the number of types will be H'02.) * Number of multiplication ratios (one byte): The number of multiplication ratios for each type (e.g. the number of multiplication ratios to which the main clock can be set and the peripheral clock can be set.) * Multiplication ratio (one byte) Multiplication ratio: The value of the multiplication ratio (e.g. when the clock-frequency multiplier is four, the value of multiplication ratio will be H'04.)
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Section 20 Flash Memory
Division ratio: The inverse of the division ratio, i.e. a negative number (e.g. when the clock is divided by two, the value of division ratio will be H'FE. H'FE = D'-2) The number of multiplication ratios returned is the same as the number of multiplication ratios and as many groups of data are returned as there are types. * SUM (one byte): Checksum (f) Operating Clock Frequency Inquiry The boot program will return the number of operating clock frequencies, and the maximum and minimum values.
Command H'23
* Command, H'23, (one byte): Inquiry regarding operating clock frequencies
Response H'33 Size Number of operating clock frequencies
Minimum value of operating Maximum value of operating clock clock frequency frequency *** SUM
* Response, H'33, (one byte): Response to operating clock frequency inquiry * Size (one byte): The number of bytes that represents the minimum values, maximum values, and the number of frequencies. * Number of operating clock frequencies (one byte): The number of supported operating clock frequency types (e.g. when there are two operating clock frequency types, which are the main and peripheral clocks, the number of types will be H'02.) * Minimum value of operating clock frequency (two bytes): The minimum value of the multiplied or divided clock frequency. The minimum and maximum values represent the values in MHz, valid to the hundredths place of MHz, and multiplied by 100. (e.g. when the value is 20.00 MHz, it will be D'2000 and H'07D0.) * Maximum value (two bytes): Maximum value of the multiplied or divided clock frequency. There are as many pairs of minimum and maximum values as there are operating clock frequencies. * SUM (one byte): Checksum
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Section 20 Flash Memory
(g) User Boot MAT Information Inquiry The boot program will return the number of user boot MATs and their addresses.
Command H'24
* Command, H'24, (one byte): Inquiry regarding user boot MAT information
Response H'34 *** SUM Size Number of areas Area-last address
Area-start address
* Response, H'34, (one byte): Response to user boot MAT information inquiry * Size (one byte): The number of bytes that represents the number of areas, area-start addresses, and area-last address * Number of Areas (one byte): The number of consecutive user boot MAT areas When user boot MAT areas are consecutive, the number of areas returned is H'01. * Area-start address (four bytes): Start address of the area * Area-last address (four bytes): Last address of the area There are as many groups of data representing the start and last addresses as there are areas. * SUM (one byte): Checksum (h) User MAT Information Inquiry The boot program will return the number of user MATs and their addresses.
Command H'25
* Command, H'25, (one byte): Inquiry regarding user MAT information
Response H'35 *** SUM Size Number of areas Last address area
Start address area
* Response, H'35, (one byte): Response to the user MAT information inquiry * Size (one byte): The number of bytes that represents the number of areas, area-start address and area-last address * Number of areas (one byte): The number of consecutive user MAT areas When the user MAT areas are consecutive, the number of areas is H'01. * Area-start address (four bytes): Start address of the area
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Section 20 Flash Memory
* Area-last address (four bytes): Last address of the area There are as many groups of data representing the start and last addresses as there are areas. * SUM (one byte): Checksum (i) Erased Block Information Inquiry The boot program will return the number of erased blocks and their addresses.
Command H'26
* Command, H'26, (one byte): Inquiry regarding erased block information
Response H'36 *** SUM Size Number of blocks Block last address
Block start address
* Response, H'36, (one byte): Response to the number of erased blocks and addresses * Size (two bytes): The number of bytes that represents the number of blocks, block-start addresses, and block-last addresses. * Number of blocks (one byte): The number of erased blocks * Block start address (four bytes): Start address of a block * Block last Address (four bytes): Last address of a block There are as many groups of data representing the start and last addresses as there are areas. * SUM (one byte): Checksum (j) Programming Unit Inquiry The boot program will return the programming unit used to program data.
Command H'27
* Command, H'27, (one byte): Inquiry regarding programming unit
Response H'37 Size Programming unit SUM
* Response, H'37, (one byte): Response to programming unit inquiry * Size (one byte): The number of bytes that indicate the programming unit, which is fixed to 2 * Programming unit (two bytes): A unit for programming This is the unit for reception of programming. * SUM (one byte): Checksum
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Section 20 Flash Memory
(k) New Bit-Rate Selection The boot program will set a new bit rate and return the new bit rate. This selection should be sent after sending the clock mode selection command.
Command H'3F Number of multiplication ratios SUM Size Multiplication ratio 1 Bit rate Multiplication ratio 2 Input frequency
* Command, H'3F, (one byte): Selection of new bit rate * Size (one byte): The number of bytes that represents the bit rate, input frequency, number of multiplication ratios, and multiplication ratio * Bit rate (two bytes): New bit rate One hundredth of the value (e.g. when the value is 19200 bps, the bit rate is H'00C0, which is D'192.) * Input frequency (two bytes): Frequency of the clock input to the boot program This is valid to the hundredths place and represents the value in MHz multiplied by 100. (e.g. when the value is 20.00 MHz, the input frequency is H'07D0 (= D'2000).) * Number of multiplication ratios (one byte): The number of multiplication ratios to which the device can be set. Normally, 2 is set because multiplication ratios for the main-operating and peripheral frequencies are set. (In this LSI, set H'01.) * Multiplication ratio 1 (one byte) : The value of multiplication or division ratios for the main operating frequency Multiplication ratio (one byte): The value of the multiplication ratio (e.g. when the clock frequency is multiplied by four, the multiplication ratio will be H'04. In this LSI, set H'01.) Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock frequency is divided by two, the value of division ratio will be H'FE. H'FE = D'-2. In this LSI, set H'01.) * Multiplication ratio 2 (one byte): The value of multiplication or division ratios for the peripheral frequency Multiplication ratio (one byte): The value of the multiplication ratio (e.g. when the clock frequency is multiplied by four, the multiplication ratio will be H'04. In this LSI, this item does not need to be set.) (Division ratio: The inverse of the division ratio, as a negative number (E.g. when the clock is divided by two, the value of division ratio will be H'FE. H'FE = D'-2 In this LSI, set H'01.) * SUM (one byte): Checksum
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Section 20 Flash Memory
Response
H'06
* Response, H'06, (one byte): Response to selection of a new bit rate When it is possible to set the bit rate, the response will be ACK.
Error Response H'BF ERROR
* Error response, H'BF, (one byte): Error response to selection of new bit rate * ERROR: (one byte): Error code H'11: Sum checking error H'24: Bit-rate selection error The rate is not available. H'25: Error in input frequency This input frequency is not within the specified range. H'26: Multiplication-ratio error The ratio does not match an available ratio. H'27: Operating frequency error The frequency is not within the specified range. (5) Received Data Check
The methods for checking of received data are listed below. 1. Input frequency The received value of the input frequency is checked to ensure that it is within the range of minimum to maximum frequencies which matches the clock modes of the specified device. When the value is out of this range, an input-frequency error is generated. 2. Multiplication ratio The received value of the multiplication ratio or division ratio is checked to ensure that it matches the clock modes of the specified device. If the value does not match the multiplication ratio or division ratio, it is the multiplication ratio error. 3. Operating frequency error Operating frequency is calculated from the received value of the input frequency and the multiplication or division ratio. The input frequency is input to the LSI and the LSI is operated at the operating frequency. The expression is given below. Operating frequency = Input frequency x Multiplication ratio, or Operating frequency = Input frequency / Division ratio The calculated operating frequency should be checked to ensure that it is within the range of minimum to maximum frequencies which are available with the clock modes of the specified device. When it is out of this range, an operating frequency error is generated.
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4. Bit rate To facilitate error checking, the value (n) of clock select (CKS) in the serial mode register (SMR), and the value (N) in the bit rate register (BRR), which are found from the peripheral operating clock frequency () and bit rate (B), are used to calculate the error rate to ensure that it is less than 4%. If the error is more than 4%, a bit rate error is generated. The error is calculated using the following expression:
Error (%) = {[ x 106 (N + 1) x B x 64 x 2(2xn - 1) ] - 1} x 100
When the new bit rate is selectable, the rate will be set in the register after sending ACK in response. The host will send an ACK with the new bit rate for confirmation and the boot program will response with that rate.
Confirmation H'06
* Confirmation, H'06, (one byte): Confirmation of a new bit rate
Response H'06
* Response, H'06, (one byte): Response to confirmation of a new bit rate The sequence of new bit-rate selection is shown in figure 20.26.
Host Setting a new bit rate Waiting for one-bit period at the specified bit rate Setting a new bit rate H'06 (ACK) with the new bit rate H'06 (ACK) with the new bit rate H'06 (ACK)
Boot program
Setting a new bit rate
Figure 20.26 New Bit-Rate Selection Sequence (6) Transition to Programming/Erasing State
The boot program will transfer the erasing program, and erase the user MATs and user boot MATs in that order. On completion of this erasure, ACK will be returned and will enter the programming/erasing state.
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Section 20 Flash Memory
The host should select the device code, clock mode, and new bit rate with device selection, clockmode selection, and new bit-rate selection commands, and then send the command for the transition to programming/erasing state. These procedures should be carried out before sending of the programming selection command or program data.
Command H'40
* Command, H'40, (one byte): Transition to programming/erasing state
Response H'06
* Response, H'06, (one byte): Response to transition to programming/erasing state The boot program will send ACK when the user MAT and user boot MAT have been erased by the transferred erasing program.
Error Response H'C0 H'51
* Error response, H'C0, (one byte): Error response for user boot MAT blank check * Error code, H'51, (one byte): Erasing error An error occurred and erasure was not completed. (7) Command Error
A command error will occur when a command is undefined, the order of commands is incorrect, or a command is unacceptable. Issuing a clock-mode selection command before a device selection or an inquiry command after the transition to programming/erasing state command, are examples.
Error Response H'80 H'xx
* Error response, H'80, (one byte): Command error * Command, H'xx, (one byte): Received command (8) Command Order
The order for commands in the inquiry selection state is shown below. 1. A supported device inquiry (H'20) should be made to inquire about the supported devices. 2. The device should be selected from among those described by the returned information and set with a device-selection (H'10) command. 3. A clock-mode inquiry (H'21) should be made to inquire about the supported clock modes. 4. The clock mode should be selected from among those described by the returned information and set.
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Section 20 Flash Memory
5. After selection of the device and clock mode, inquiries for other required information should be made, such as the multiplication-ratio inquiry (H'22) or operating frequency inquiry (H'23), which are needed for a new bit-rate selection. 6. A new bit rate should be selected with the new bit-rate selection (H'3F) command, according to the returned information on multiplication ratios and operating frequencies. 7. After selection of the device and clock mode, the information of the user boot MAT and user MAT should be made to inquire about the user boot MATs information inquiry (H'24), user MATs information inquiry (H'25), erased block information inquiry (H'26), and programming unit inquiry (H'27). 8. After making inquiries and selecting a new bit rate, issue the transition to programming/erasing state command (H'40). The boot program will then enter the programming/erasing state. (9) Programming/Erasing State
A programming selection command makes the boot program select the programming method, an 128-byte programming command makes it program the memory with data, and an erasing selection command and block erasing command make it erase the block. The programming/erasing commands are listed below. Table 20.17 Programming/Erasing Command
Command H'42 H'43 H'50 H'48 H'58 H'52 H'4A H'4B H'4C H'4D H'4F Command Name User boot MAT programming selection Description Transfers the user boot MAT programming program
User MAT programming selection Transfers the user MAT programming program 128-byte programming Erasing selection Block erasing Memory read User boot MAT sum check User MAT sum check User boot MAT blank check User MAT blank check Boot program status inquiry Programs 128 bytes of data Transfers the erasing program Erases a block of data Reads the contents of memory Checks the checksum of the user boot MAT Checks the checksum of the user MAT Checks whether the contents of the user boot MAT are blank Checks whether the contents of the user MAT are blank Inquires into the boot program's status
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Section 20 Flash Memory
(10) Programming Programming is executed by a programming-selection command and a 128-byte programming command. Firstly, the host should send the programming-selection command and select the programming method and programming MATs. There are two programming selection commands, and selection is according to the area and method for programming. 1. User boot MAT programming selection 2. User MAT programming selection After issuing the programming selection command, the host should send the 128-byte programming command. The 128-byte programming command that follows the selection command represents the data programmed according to the method specified by the selection command. When more than 128-byte data is programmed, 128-byte commands should repeatedly be executed. Sending a 128-byte programming command with H'FFFFFFFF as the address will stop the programming. On completion of programming, the boot program will wait for selection of programming or erasing. Where the sequence of programming operations that is executed includes programming with another method or of another MAT, the procedure must be repeated from the programming selection command. The sequence for programming-selection and 128-byte programming commands is shown in figure 20.27.
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Section 20 Flash Memory
Host Programming selection (H'42, H'43)
Boot program
Transfer of the programming program
ACK 128-byte programming (address, data) Repeat ACK 128-byte programming (H'FFFFFFFF) ACK Programming
Figure 20.27 Programming Sequence (a) User boot MAT programming selection The boot program will transfer a programming program. The data is programmed to the user boot MATs by the transferred programming program.
Command H'42
* Command, H'42, (one byte): User boot-program programming selection
Response H'06
* Response, H'06, (one byte): Response to user boot-program programming selection When the programming program has been transferred, the boot program will return ACK.
Error Response H'C2 ERROR
* Error response : H'C2 (1 byte): Error response to user boot MAT programming selection * ERROR : (1 byte): Error code H'54: Selection processing error (transfer error occurs and processing is not completed) (b) User-program programming selection The boot program will transfer a program for programming. The data is programmed to the user MATs by the transferred program for programming.
Command H'43
* Command, H'43, (one byte): User-program programming selection
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Section 20 Flash Memory
Response
H'06
* Response, H'06, (one byte): Response to user-program programming selection When the programming program has been transferred, the boot program will return ACK.
Error Response H'C3 ERROR
* Error response : H'C3 (one byte): Error response to user MAT programming selection * ERROR : (one byte): Error code H'54: Selection processing error (transfer error occurs and processing is not completed) (c) 128-byte programming The boot program will use the programming program transferred by the programming selection to program the user boot MATs or user MATs in response to 128-byte programming.
Command H'50 Data *** SUM Address ***
* Command, H'50, (one byte): 128-byte programming * Programming Address (four bytes): Start address for programming Multiple of the size specified in response to the programming unit inquiry (i.e. H'00, H'01, H'00, H'00 : H'00010000) * Programming Data (128 bytes): Data to be programmed The size is specified in the response to the programming unit inquiry. * SUM (one byte): Checksum
Response H'06
* Response, H'06, (one byte): Response to 128-byte programming On completion of programming, the boot program will return ACK.
Error Response H'D0 ERROR
* Error response, H'D0, (one byte): Error response for 128-byte programming * ERROR: (one byte): Error code H'11: Checksum Error H'28: Address error Address is not in the specified MAT. H'53: Programming error A programming error has occurred and programming cannot be continued.
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Section 20 Flash Memory
The specified address should match the unit for programming of data. For example, when the programming is in 128-byte units, the lower byte of the address should be H'00 or H'80. When there are less than 128 bytes of data to be programmed, the host should fill the rest with H'FF. Sending the 128-byte programming command with the address of H'FFFFFFFF will stop the programming operation. The boot program will interpret this as the end of the programming and wait for selection of programming or erasing.
Command H'50 Address SUM
* Command, H'50, (one byte): 128-byte programming * Programming Address (four bytes): End code is H'FF, H'FF, H'FF, H'FF. * SUM (one byte): Checksum
Response H'06
* Response, H'06, (one byte): Response to 128-byte programming On completion of programming, the boot program will return ACK.
Error Response H'D0 ERROR
* Error Response, H'D0, (one byte): Error response for 128-byte programming * ERROR: (one byte): Error code H'11: Sum check error H'53: Programming error An error has occurred in programming and programming cannot be continued. (11) Erasure Erasure is performed with the erasure selection and block erasure command. Firstly, erasure is selected by the erasure selection command and the boot program then erases the specified block. The command should be repeatedly executed if two or more blocks are to be erased. Sending a block-erasure command from the host with the block number H'FF will stop the erasure operating. On completion of erasing, the boot program will wait for selection of programming or erasing. The sequences of the issuing of erasure selection commands and the erasure of data are shown in figure 20.28.
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Section 20 Flash Memory
Host Preparation for erasure (H'48)
Boot program
Transfer of erasure program ACK Erasure (Erasure block number) ACK Erasure (H'FF) ACK
Repeat
Erasure
Figure 20.28 Erasure Sequence (a) Erasure Selection The boot program will transfer the erasure program. User MAT data is erased by the transferred erasure program.
Command H'48
* Command, H'48, (one byte): Erasure selection
Response H'06
* Response, H'06, (one byte): Response for erasure selection After the erasure program has been transferred, the boot program will return ACK.
Error Response H'C8 ERROR
* Error Response, H'C8, (one byte): Error response to erasure selection * ERROR: (one byte): Error code H'54: Selection processing error (transfer error occurs and processing is not completed) (b) Block Erasure The boot program will erase the contents of the specified block.
Command H'58 Size Block number SUM
* Command, H'58, (one byte): Erasure * Size (one byte): The number of bytes that represents the erasure block number This is fixed to 1. * Block number (one byte): Number of the block to be erased
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Section 20 Flash Memory
* SUM (one byte): Checksum
Response H'06
* Response, H'06, (one byte): Response to Erasure After erasure has been completed, the boot program will return ACK.
Error Response H'D8 ERROR
* Error Response, H'D8, (one byte): Response to Erasure * ERROR (one byte): Error code H'11: Sum check error H'29: Block number error Block number is incorrect. H'51: Erasure error An error has occurred during erasure. On receiving block number H'FF, the boot program will stop erasure and wait for a selection command.
Command H'58 Size Block number SUM
* Command, H'58, (one byte): Erasure * Size, (one byte): The number of bytes that represents the block number This is fixed to 1. * Block number (one byte): H'FF Stop code for erasure * SUM (one byte): Checksum
Response H'06
* Response, H'06, (one byte): Response to end of erasure (ACK) When erasure is to be performed after the block number H'FF has been sent, the procedure should be executed from the erasure selection command. (12) Memory read The boot program will return the data in the specified address.
Command H'52 Size Area Read address SUM
Read size
* Command: H'52 (1 byte): Memory read * Size (1 byte): Amount of data that represents the area, read address, and read size (fixed at 9)
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Section 20 Flash Memory
* Area (1 byte) H'00: User boot MAT H'01: User MAT An address error occurs when the area setting is incorrect. * Read address (4 bytes): Start address to be read from * Read size (4 bytes): Size of data to be read * SUM (1 byte): Checksum
Response H'52 Data SUM Read size ***
* * * *
Response: H'52 (1 byte): Response to memory read Read size (4 bytes): Size of data to be read Data (n bytes): Data for the read size from the read address SUM (1 byte): Checksum
H'D2 ERROR
Error Response
* Error response: H'D2 (1 byte): Error response to memory read * ERROR: (1 byte): Error code H'11: Sum check error H'2A: Address error The read address is not in the MAT. H'2B: Size error The read size exceeds the MAT. (13) User-Boot Program Sum Check The boot program will return the byte-by-byte total of the contents of the bytes of the user-boot program, as a four-byte value.
Command H'4A
* Command, H'4A, (one byte): Sum check for user-boot program
Response H'5A Size Checksum of user boot program SUM
* Response, H'5A, (one byte): Response to the sum check of user-boot program * Size (one byte): The number of bytes that represents the checksum This is fixed to 4. * Checksum of user boot program (four bytes): Checksum of user boot MATs The total of the data is obtained in byte units.
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Section 20 Flash Memory
* SUM (one byte): Sum check for data being transmitted (14) User-Program Sum Check The boot program will return the byte-by-byte total of the contents of the bytes of the user program.
Command H'4B
* Command, H'4B, (one byte): Sum check for user program
Response H'5B Size Checksum of user program SUM
* Response, H'5B, (one byte): Response to the sum check of the user program * Size (one byte): The number of bytes that represents the checksum This is fixed to 4. * Checksum of user boot program (four bytes): Checksum of user MATs The total of the data is obtained in byte units. * SUM (one byte): Sum check for data being transmitted (15) User Boot MAT Blank Check The boot program will check whether or not all user boot MATs are blank and return the result.
Command H'4C
* Command, H'4C, (one byte): Blank check for user boot MAT
Response H'06
* Response, H'06, (one byte): Response to the blank check of user boot MAT If all user MATs are blank (H'FF), the boot program will return ACK.
Error Response H'CC H'52
* Error Response, H'CC, (one byte): Response to blank check for user boot MAT * Error Code, H'52, (one byte): Erasure has not been completed. (16) User MAT Blank Check The boot program will check whether or not all user MATs are blank and return the result.
Command H'4D
* Command, H'4D, (one byte): Blank check for user MATs
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Section 20 Flash Memory
Response
H'06
* Response, H'06, (one byte): Response to the blank check for user boot MATs If the contents of all user MATs are blank (H'FF), the boot program will return ACK.
Error Response H'CD H'52
* Error Response, H'CD, (one byte): Error response to the blank check of user MATs. * Error code, H'52, (one byte): Erasure has not been completed. (17) Boot Program State Inquiry The boot program will return indications of its present state and error condition. This inquiry can be made in the inquiry/selection state or the programming/erasing state.
Command H'4F
* Command, H'4F, (one byte):
Response H'5F Size
Inquiry regarding boot program's state
ERROR SUM
Status
* * * *
Response, H'5F, (one byte): Response to boot program state inquiry Size (one byte): The number of bytes. This is fixed to 2. Status (one byte): State of the boot program ERROR (one byte): Error state ERROR = 0 indicates normal operation. ERROR other than 0 indicates abnormal.
* SUM (one byte): Checksum This command can be accepted during programming/erasing operation, however, response time will be longer.
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Section 20 Flash Memory
Table 20.18 Status Code
Code H'11 H'12 H'13 H'1F H'31 H'3F H'4F H'5F Description Device Selection Wait Clock Mode Selection Wait Bit Rate Selection Wait Programming/Erasing State Transition Wait (Bit rate selection is completed) Programming State for Erasure Programming/Erasing Selection Wait (Erasure is completed) Programming Data Receive Wait Erasure Block Specification Wait (Erasure is completed)
Table 20.19 Error Code
Code H'00 H'11 H'12 H'21 H'22 H'24 H'25 H'26 H'27 H'29 H'2A H'2B H'51 H'52 H'53 H'54 H'80 H'FF Description No Error Sum Check Error Program Size Error Device Code Mismatch Error Clock Mode Mismatch Error Bit Rate Selection Error Input Frequency Error Multiplication Ratio Error Operating Frequency Error Block Number Error Address Error Data Length Error Erasure Error Erasure Incomplete Error Programming Error Selection Processing Error Command Error Bit-Rate-Adjustment Confirmation Error
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Section 20 Flash Memory
20.11
AC Characteristics and Timing in Programmer Mode
Table 20.20 AC Characteristics in Memory Read Mode Conditions: VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Item Command programming cycle CE hold time CE setup time Data hold time Data setup time Programming pulse width WE rising time WE falling time Symbol tnxtc tceh tces tdh tds twep tr tf Min. 20 0 0 50 50 70 Max. 30 30 Unit s ns ns ns ns ns ns ns
Command write A18 to A0 tces CE OE tf WE tds I/O7 to I/O0 Note: Data is latched at the falling edge of WE. tdh twep tr tceh tnxtc
Memory-read mode ADDRESS STABLE
Figure 20.29 Memory Read Timing after Command Programming
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Section 20 Flash Memory
Table 20.21 AC Characteristics in Transition from Memory-Read Mode to Other Mode Conditions: VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Item Command programming cycle CE hold time CE setup time Data hold time Data setup time Programming pulse width WE rising time WE falling time Symbol tnxtc tceh tces tdh tds twep tr tf Min. 20 0 0 50 50 70 Max. 30 30 Unit s ns ns ns ns ns ns ns
Memory-read mode A18 to A0 ADDRESS STABLE tnxtc CE OE
Other mode command write
tces
tceh
tf WE
twep
tr
tds I/O7 to I/O0 Note: The WE pin and OE pin should not be enabled simultaneously.
tdh
Figure 20.30 Waveform of Transition from Memory-Read Mode to Other Mode
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Section 20 Flash Memory
Table 20.22 AC Characteristics in Memory-Read Mode Conditions: VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Item Access time CE output delay time OE output delay time Output disable delay time Data output hold time Symbol tacc tce toe tdf toh Min. 5 Max. 20 150 150 100 Unit s ns ns ns ns
A18 to A0
ADDRESS STABLE
ADDRESS STABLE
CE OE WE
VIL VIL VIH tacc toh tacc toh
I/O7 to I/O0
Figure 20.31 Waveform of CE, OE Enable State Read
A18 to A0
ADDRESS STABLE tce
ADDRESS STABLE tce
CE OE WE I/O7 to I/O0 VIH tacc toe toe
tacc toh tdf
toh
tdf
Figure 20.32 Waveform of CE, OE Clock System Read
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Section 20 Flash Memory
Table 20.23 AC Characteristics in Auto-Program Mode Conditions: VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Item Command programming cycle CE hold time CE setup time Data hold time Data setup time Programming pulse width Status polling start time Status polling access time Address setup time Address hold time Memory programming time WE rising time WE falling time Symbol tnxtc tceh tces tdh tds twep twsts tspa tas tah twrite tr tf Min. 20 0 0 50 50 70 1 0 60 1 Max. 150 3000 30 30 Unit s ns ns ns ns ns ms ns ns ns ms ns ns
A18 to A0
ADDRESS STABLE
tces
CE OE
tceh
tnxtc
tnxtc
tf
WE
twep
tr
tas
tah
Data transfer 1 byte...128 bytes
twsts
tspa twrit
tds
I/O7
tdh
Programming operation end determination signal
I/O6 Programming normal end determination signal I/O5 to I/O0 H'40 H'00
Figure 20.33 Waveform of Automatic Programming Mode
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Section 20 Flash Memory
Table 20.24 AC Characteristic in Auto-Erase Mode Conditions: VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Item Command programming cycle CE hold time CE setup time Data hold time Data setup time Programming pulse width Status polling start time Status polling access time Memory erasing time WE rising time WE falling time Symbol tnxtc tceh tces tdh tds twep Tests tspa terase tr tf Min. 20 0 0 50 50 70 1 100 Max. 150 40000 30 30 Unit s ns ns ns ns ns ms ns ms ns ns
A18 to A0
tces
CE OE
tceh
tnxtc
tnxtc
tf
WE
twep
tr
tests
tspa terase
tds
I/O7
tdh
Erasing end determination signal Erasing normal end determination signal
I/O6
I/O5 to I/O0
H'20
H'20
H'00
Figure 20.34 Waveform in Auto-Erase Mode
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Section 20 Flash Memory
Table 20.25 AC Characteristics in Status-Read Mode Conditions:
Item Read time after command programming CE hold time CE setup time Data hold time Data setup time Programming pulse width OE output delay time Disable delay time CE output delay time WE rising time WE falling time
VCC = 5.0 V 0.5 V, VSS = 0 V, Ta = 25C 5C
Symbol tnxtc tceh tces tdh tds twep toe tdf tce tr tf Min. 20 0 0 50 50 70 Max. 150 100 150 30 30 Unit s ns ns ns ns ns ns ns ns ns ns
A18 to A0
tces
CE
tceh
tnxtc
tces
tceh
tnxtc
tnxtc tce
OE
tf
WE
twep
tr
tf
twep
tr
toe tdf
tds
I/O7 to I/O0 H'71
tdh
tds
H'71
tdh
Note: I/O3 and I/O2 are undefined.
Figure 20.35 Waveform in Status-Read Mode
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Section 20 Flash Memory
Table 20.26 Transition Time Rules before Command Wait State
Item Symbol MIN 30 10 0 MAX Unit ms ms ms
Standby clear (oscillation stabilized time) tosc1 Programmer mode setup time VCC hold time tbmv tdwn
Command wait state
tosc1
VCC RES
tbmv
Memory-read mode Command wait satate
Auto-program mode Auto-erase mode
Normal/abnormal end determination tdwn
Figure 20.36 Oscillation Stabilized Time, Programmer Mode Setup Time and Power Falling Sequence
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Section 20 Flash Memory
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Section 21 Clock Pulse Generator
Section 21 Clock Pulse Generator
This LSI has an on-chip clock pulse generator that generates the system clock (), the bus master clock, and internal clocks. The clock pulse generator consists of a system clock oscillator, PLL (Phase Locked Loop) circuit, clock selection circuit, medium-speed clock divider, bus master clock selection circuit, subclock oscillator, and waveform generation circuit. Figure 21.1 shows a block diagram of the clock pulse generator.
LPWRCR STC0, STC1
SCKCR SCK2 to SCK0
EXTAL XTAL
System clock oscillator
PLL circuit (x1, x2) Clock selection circuit
Mediumspeed clock divider
/2 to /32
Bus master clock selection circuit
OSC1 OSC2
Subclock oscillator
Waveform generation circuit
SUB
System clock to pin
Internal clock to peripheral modules
Bus master clock to CPU and DTC
WDT_1 count clock Legend: LPWRCR: Low-power control register SCKCR: System clock control register
Figure 21.1 Block Diagram of Clock Pulse Generator Frequency changes are performed by software by settings in the low-power control register (LPWRCR) and system clock control register (SCKCR).
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Section 21 Clock Pulse Generator
21.1
Register Descriptions
The clock pulse generator has the following registers. * System clock control register (SCKCR) * Low-power control register (LPWRCR) 21.1.1 System Clock Control Register (SCKCR)
SCKCR performs the output of clock, operation selection when changing the multiplication ratio of the PLL circuit, and medium-speed mode control.
Bit 7 Bit Name PSTOP Initial Value 0 R/W R/W Description Clock Output Prohibited Controls output. * High-speed, medium-speed, and sleep modes 0: output 1: Fixed to high * Software standby and watch modes 0: Fixed to high 1: Fixed to high * Hardware standby mode 0: High impedance 1: High impedance 6 0 R/W Reserved This is a readable/writable bit, but the write value should always be 0. 5, 4 All 0 Reserved These bits are always read as 0 and cannot be modified.
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Section 21 Clock Pulse Generator
Bit 3
Bit Name STCS
Initial Value 0
R/W R/W
Description Multiplication Ratio Switch Mode Selection Selects the operation when changing the multiplication ratio of PLL circuit. 0: The specified multiplication ratio is valid after software standby mode or watch mode is entered. 1: The specified multiplication ratio is valid immediately after rewriting the STC bit.
2 1 0
SCK2 SCK1 SCK0
0 0 0
R/W R/W R/W
System Clock Select 2 to 0 Select the bus master clock. 000: High-speed mode 001: Medium-speed clock is /2 010: Medium-speed clock is /4 011: Medium-speed clock is /8 100: Medium-speed clock is /16 101: Medium-speed clock is /32 11X: Setting prohibited
Legend: X: Don't care
21.1.2
Low-Power Control Register (LPWRCR)
LPWRCR controls power-down mode, selects sampling frequency for eliminating noise, controls a subclock oscillator, and specifies multiplication ratio.
Bit 7 Bit Name DTON Initial Value 0 R/W R/W Description Direct Transfer On Flag 0: When the SLEEP instruction is executed in high-speed mode or medium-speed mode, operation shifts to sleep mode, software standby mode, or watch mode*. 1: Setting prohibited
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Section 21 Clock Pulse Generator
Bit 6
Bit Name LSON
Initial Value 0
R/W R/W
Description Low-Speed On Flag 0: When the SLEEP instruction is executed in high-speed mode or medium-speed mode, operation shifts to sleep mode, software standby mode, or watch mode*. 1: Setting prohibited
5
NESEL
0
R/W
Noise Elimination Sampling Frequency Select Selects the frequency of which the subclock (SUB) generated by the subclock oscillator is sampled by the clock () generated by the system clock oscillator. 0: Sampling using /32 1: Setting prohibited
4
SUBSTP
0
R/W
Subclock Oscillator Control Enables/disables a subclock oscillator. This bit should be set to 1 when a subclock is not used. 0: Enables subclock oscillator 1: Disables subclock oscillator
3
RFCUT
0
R/W
On-Chip Feedback Resistor Control Selects whether or not on-chip feedback resistor of the system clock generator is used when an external clock is input. Do not access when the crystal resonator is used. After setting this bit in the external clock input state, enter software standby mode or watch mode. When software standby mode or watch mode is entered, this bit switches whether or not on-chip feedback resistor is used. 0: On-chip feedback resistor of the system clock generator used 1: On-chip feedback resistor of the system clock generator not used
2
0
R/W
Reserved This is a readable/writable bit, but the write value should always be 0.
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Section 21 Clock Pulse Generator
Bit 1 0
Bit Name STC1 STC0
Initial Value 0 0
R/W R/W R/W
Description Multiplication Ratio Setting Specify multiplication ratio of the PLL circuit. The specified multiplication ratio becomes valid after software standby mode or watch mode is entered. A setting of STC1 = 0 must be used in this LSI. 00: x 1 01: x 2 10: Setting prohibited 11: Setting prohibited
Note:
*
When watch mode is entered, high-speed mode must be set.
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Section 21 Clock Pulse Generator
21.2
System Clock Oscillator
System clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock. 21.2.1 Connecting Crystal Resonator
A crystal resonator can be connected as shown in the example in figure 21.2. Select the damping resistance Rd according to table 21.1. An AT-cut parallel-resonance crystal should be used.
CL1 EXTAL XTAL Rd CL2 CL1 = CL2 = 10 to 22pF
Note:
CL1 and CL2 are reference values including the floating capacitance of the board.
Figure 21.2 Connection of Crystal Resonator (Example) Table 21.1 Damping Resistance Value
Frequency (MHz) Rd () 8 200 10 100 12 0 16 0 20 0 25 0
Figure 21.3 shows the equivalent circuit of the crystal resonator. Use a crystal resonator that has the characteristics shown in table 21.2.
CL XTAL L Rs EXTAL
C0
AT-cut parallel-resonance type
Figure 21.3 Crystal Resonator Equivalent Circuit
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Section 21 Clock Pulse Generator
Table 21.2 Crystal Resonator Characteristics
Frequency (MHz) RS max () C0 max (pF) 8 80 7 10 60 7 12 60 7 16 50 7 20 40 7 25 40 7
21.2.2
External Clock Input
An external clock signal can be input as shown in the examples in figure 21.4. If the XTAL pin is left open, ensure that parasitic capacitance does not exceed 10 pF. When an external clock is input to the EXTAL pin, wait for longer than clock oscillator settling time to keep enough time for PLL settling before power is supplied or standby mode is canceled.
EXTAL XTAL Open
External clock input
XTAL pin left open
Figure 21.4 External Clock Input (Examples)
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Section 21 Clock Pulse Generator
Table 21.3 shows the input conditions for the external clock. Table 21.3 External Clock Input Conditions
VCC= 3.0 V to 5.5 V
Item External clock input cycle time
Symbo l Min. PLL1 tEXcyc multiplication PLL2 multiplication 38 76 tEXL tEXH tEXr tEXf 0.4 0.4
H8S/2552 and H8S/2506 Groups Max. 125 125 0.6 0.6 5 5
H8S/2556 Group Min. 50 100 0.4 0.4 Max. 125 125 0.6 0.6 5 5 tEXcyc tEXcyc ns ns Unit ns
Test Conditions Figure 21.5
External clock input low pulse width External clock input high pulse width External clock rise time External clock fall time
tEXcyc tEXH tEXL VCC x 0.5
EXTAL
tEXr
tEXf
Figure 21.5 External Clock Input Timing
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Section 21 Clock Pulse Generator
21.2.3
Notes on Switching External Clock
When two or more external clocks (e.g.: 10 MHz and 20 MHz) are used as the system clock, input clock should be switched in software standby mode. An example of external clock switching circuit is shown in figure 21.6. An example of external clock switching timing is shown in figure 21.7.
This LSI External clock switch request Control circuit External interrupt signal External clock switch signal Port output External interrupt
External clock 1 External clock 2
Selector
EXTAL
Figure 21.6 External Clock Switching Circuit (Examples)
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Section 21 Clock Pulse Generator
External clock 1 External clock 2 Operation Clock switching request (1) Port output (2) (3) SLEEP instruction execution Interrupt exception handling (5)
External clock switching circuit EXTAL
Internal clock External interrupt Active (external clock2) (1) Port output (clock switching) 200ns or more (4)
standby time
Software standby mode
Active (external clock1)
(2) Transition to software standby mode (3) External clock switchover (4) External interrupt generation (An interrupt should be input 200 ns or more after transition to software standby mode.) (5) Interrupt exception handling
Figure 21.7 External Clock Switching Timing (Examples)
21.3
PLL Circuit
The PLL circuit multiplies the frequency from the clock pulse generator by one or two. The multiplication ratio is set by the STC1 and STC0 bits in LPWRCR. At the setting, the phase of the rising edge of an internal clock is controlled to match that of the rising edge of the EXTAL pin. When changing the multiplication ratio of the PLL circuit, the operation differs according to the setting of the STCS bit in SCKCR. When the STCS bit is 0, the changed multiplication ratio is valid after software standby mode or watch mode is entered. The transition time is set by the STS2 to STS0 bits in the standby control register (SBYCR). For details on SBYCR, see section 22.1.1, Standby Control Register (SBYCR). 1. In the initial state, the multiplication ratio of the PLL circuit is 1. 2. The transition time is set by the STS2 to STS0 bits. 3. The multiplication ratio is set by the STC1 and STC0 bits, and software standby mode or watch mode is entered.
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Section 21 Clock Pulse Generator
4. The clock pulse generator stops, and the setting for the STC1 and STC0 bits becomes valid. 5. Software standby mode or watch mode is exited, and the transition time set by the STS2 to STS0 bits is ensured. 6. After the set transition time is elapsed, this LSI resumes operation with the changed multiplication ratio. When the STCS bit is set to 1, after rewriting the STC1 and STC0 bits, this LSI operates with the changed multiplication ratio.
21.4
Medium-Speed Clock Divider
The medium-speed clock divider divides the system clock to generate /2, /4, /8, /16, and /32.
21.5
Bus Master Clock Selection Circuit
The bus master clock selection circuit selects the clock supplied to the bus master by setting the SCK2 to SCK0 bits in SCKCR. The bus master clock can be selected from system clock (), or medium-speed clocks (/2, /4, /8, /16, and /32).
21.6
System Clock with IEBus
When using the IEBus*1, the system clock should be set with one of 12 MHz, 12.58 MHz, 18 MHz, 18.87 MHz, 24 MHz, or 25.16 MHz. When the IEBus*1 is not used, any system clock frequency between 8 MHz and 26 MHz*2 can be used. Notes: 1. The IEBus is supported only by the H8S/2552 Group. 2. System clock frequency up to 20 MHz is supported by the H8S/2556 Group.
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Section 21 Clock Pulse Generator
21.7
21.7.1
Subclock Oscillator
Connecting 32.768-kHz Crystal Resonator
To supply a clock to the subclock divider, connect a 32.768-kHz crystal resonator, as shown in figure 21.8. Figure 21.9 shows the equivalent circuit for a 32.768-kHz crystal resonator.
C1 OSC1
C2 OSC2 C1 = C2 = 15 pF (typ)
Note: C1 and C2 are reference values including the floating capacitance of the boad.
Figure 21.8 Connection Example of 32.768-kHz Crystal Resonator
Ls Cs Rs
OSC1 Co Co = 1.5 pF (typ.) Rs = 14 k (typ.) fw = 32.768 kHz
OSC2
Type name = C001R (SEIKO EPSON)
Figure 21.9 Equivalent Circuit for 32.768-kHz Crystal Resonator
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Section 21 Clock Pulse Generator
21.7.2
Handling Pins when Subclock Is Not Used
If no subclock is required, connect the OSC1 pin to Vss and leave the OSC2 pin open, as shown in figure 21.10. The SUBSTP bit in LPWRCR must be set to 1. If the SUBSTP bit is not set to 1, transitions to the power-down mode may not complete normally.
OSC1
OSC2
Open
Figure 21.10 Pin Handling when Subclock Is Not Used
21.8
Subclock Waveform Generation Circuit
To eliminate noise from the subclock input from the OSC1 pin, the subclock is sampled using the dividing clock . The sampling frequency is set using the NESEL bit in LPWRCR. For details, see section 21.1.2, Low-Power Control Register (LPWRCR). No sampling is performed in watch mode.
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Section 21 Clock Pulse Generator
21.9
21.9.1
Usage Notes
Note on Crystal Resonator
As various characteristics related to the crystal resonator are closely linked to the user's board design, thorough evaluation is necessary on the user's part, using the resonator connection examples shown in this section as a guide. As the resonator circuit ratings will depend on the floating capacitance of the resonator and the mounting circuit, the ratings should be determined in consultation with the resonator manufacturer. The design must ensure that a voltage exceeding the maximum rating is not applied to the oscillator pin. 21.9.2 Note on Board Design
When designing the board, place the crystal resonator and its load capacitors as close as possible to the XTAL, EXTAL, OSC1, and OSC2 pins. Make wires as short as possible. Other signal lines should be routed away from the oscillator circuit, as shown in figure 21.11. This is to prevent induction from interfering with correct oscillation.
Avoid C1 Signal A Signal B This LSI EXTAL, OSC1 XTAL, OSC2 C2
Figure 21.11 Note on Board Design of Oscillator Circuit Figure 21.12 shows the recommended connection circuit between the power supply pins and Vss pin. The CB which is a capacitor for stabilization should be inserted near the pin between the power supply pins (VCC, VCL, P1VCC, and P2VCC) and Vss pin. Two CBs should be placed for the P1VCC line. Other signal lines should not be crossed.
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Section 21 Clock Pulse Generator
VCC P1VCC P1VCC P2VCC VCL CB CB CB CB CB
VSS
CB = 0.47 F (recommended value) Note: The CB is a laminated ceramic.
Figure 21.12 Recommended Connection Circuit between Power Supply Pins and Vss Pin
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Section 21 Clock Pulse Generator
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Section 22 Power-Down Modes
Section 22 Power-Down Modes
In addition to the normal program execution state, this LSI has power-down modes in which operation of the CPU and oscillator is halted and power consumption is reduced. Low-power operation can be achieved by individually controlling the CPU, on-chip peripheral modules, and so on. This LSI's operating modes are as follows: (1) High-speed mode (2) Medium-speed mode (3) Sleep mode (4) Watch mode (5) Module stop mode (6) Software standby mode (7) Hardware standby mode Of these, (2) to (7) are power-down modes. Sleep mode is a CPU state, medium-speed mode is CPU and bus master states, and module stop mode is an on-chip peripheral function (including bus masters other than the CPU) state. After a reset, the LSI is in high-speed mode. Table 22.1 shows the internal state of the LSI in the respective modes. Table 22.2 shows the conditions for shifting between power-down modes. Figure 22.1 is a mode transition diagram. Table 22.1 LSI Internal States in Each Mode
Function
System clock pulse generator Subclock pulse generator Functioning /halted Functioning /halted Functioning /halted Functioning /halted Function-ing Functioning /halted Halted
HighSpeed
Functioning
MediumSpeed
Functioning
Sleep
Functioning
Module Stop
Functioning
Watch
Halted
Software Standby
Halted
Hardware Standby
Halted
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Section 22 Power-Down Modes
Function
CPU
HighSpeed
Instructions Functioning Registers
MediumSpeed
Mediumspeed operation
Sleep
Halted Retained Functioning (DTC)
Module Stop
Functioning
Watch
Halted Retained
Software Standby
Halted Retained Retained
Hardware Standby
Halted Undefined Retained
RAM
Functioning
Functioning
Functioning
Retained
I/O
Functioning
Functioning
Functioning
Functioning
Retained
Retained
High impedance
External interrupts Peripheral functions
NMI IRQn PBC
Functioning
Functioning
Functioning
Functioning
Functioning
Functioning
Halted
Functioning
Mediumspeed operation
Functioning
Functioning/ Halted halted (retained) (retained)
Halted (retained)
Halted (reset)
DTC
Functioning
Mediumspeed operation
Functioning
Functioning/ Halted halted (retained) (retained)
Halted (retained)
Halted (reset)
WDT_1
Functioning
Functioning
Functioning
Functioning
Subclock operation
Halted (retained) Halted (retained) Halted (retained)
Halted (reset) Halted (reset) Halted (reset)
WDT_0
Functioning
Functioning
Functioning
Functioning
Halted (retained)
TMR
Functioning
Functioning
Functioning
Functioning/ Halted halted (retained) (retained)
TPU SCI I2C2
Functioning
Functioning
Functioning
Functioning/ Halted halted (retained) Halted*3 (reset/ retained) Halted*3 (reset/ retained) (retained)
Halted (retained)
Halted (reset)
Halted*3 (reset/ retained) Halted (retained) *4
D/A
Functioning/ Halted halted (retained) *4 (retained) *4
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Section 22 Power-Down Modes
Function
Peripheral functions A/D IEB*
1
HighSpeed
Functioning
MediumSpeed
Functioning
Sleep
Functioning
Module Stop
Watch
Software Standby
Halted (reset)
Hardware Standby
Halted (reset)
Functioning/ Halted halted (reset) (reset)
HCAN*2
Notes:
1. 2. 3. 4.
"Halted (retained)" means that internal register values are retained. The internal state is "operation suspended." "Halted (reset)" means that internal register values and internal states are initialized. In module stop mode, only modules for which a stop setting has been made are halted (reset or retained). Supported only by the H8S/2552 Group. Supported only by the H8S/2556 Group. BC2 to BC0 are halted (reset) and other registers are halted (retained). "Halted (retained)" means that internal register values are retained. For analog outputs, the given D/A absolute accuracy is not satisfied because the internal state is "operation suspended."
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Section 22 Power-Down Modes
Program-halted state Reset state Manual reset state Power-on reset state STBY pin = Low Hardware standby mode
STBY pin = High RES pin = Low
MRES = High Program execution state
RES pin = High SSBY = 0, LSON = 0 SLEEP instruction Sleep mode (main clock)
High-speed mode (main clock) Any interrupt SCK2 to SCK0 = 0 SCK2 to SCK0 0 SLEEP instruction External interrupt *2 SLEEP instruction Interrupt *1, LSON bit = 0
SSBY = 1, PSS = 0, LSON = 0 Software standby mode
Medium-speed mode (main clock)
SSBY = 1, PSS = 1, DTON = 0 Watch mode (subclock)
: Transition after exception handling Notes:
: Power-down mode
When a transition is made between modes by means of an interrupt, the transition cannot be made on interrupt source generation alone. Ensure that interrupt handling is performed after accepting the interrupt request. From any state except hardware standby mode, a transition to the reset state occurs when RES is driven low. From any state except hardware standby mode and power-on reset state, a transition to the manual reset state occurs when MRES is driven low. From any state, a transition to hardware standby mode occurs when STBY is driven low. Always select high-speed mode before making a transition to watch mode. 1. NMI, IRQ0 to IRQ7, WDT1 interrupt 2. NMI, IRQ0 to IRQ7
Figure 22.1 Mode Transition Diagram
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Section 22 Power-Down Modes
Table 22.2 Power-Down Mode Transition Conditions
PreTransition State Status of Control Bit at Transition SSBY PSS X X 0 0 1 1 1 State after Transition Back from Power-Down Mode Invoked by Interrupt High-speed/Mediumspeed -- High-speed/Mediumspeed -- High-speed -- --
State after Transition Invoked by SLEEP LSON DTON Instruction X X X X 0 X 1 Sleep -- Software standby -- Watch -- --
High-speed/ 0 Medium-speed 0 1 1 1 1 1 Legend: X: Don't care --: Do not set.
0 1 0 1 0 1 0
22.1
Register Descriptions
The following registers relate to the power-down modes. For details on the system clock control register (SCKCR), refer to section 21.1.1, System Clock Control Register (SCKCR). For details on the low power control register (LPWRCR), refer to section 21.1.2, Low-Power Control Register (LPWRCR). For details on the timer control/status register (TCSR_1), refer to section 11.3.5, Timer Control/Status Register (TCSR). * * * * * * * Standby control register (SBYCR) Module stop control register A (MSTPCRA) Module stop control register B (MSTPCRB) Module stop control register C (MSTPCRC) Low power control register (LPWRCR) System clock control register (SCKCR) Timer control/status register (TCSR_1)
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Section 22 Power-Down Modes
22.1.1
Standby Control Register (SBYCR)
SBYCR performs power-down mode control.
Bit 7 Bit Name SSBY Initial Value 0 R/W R/W Description Software Standby Specifies transition destination when the SLEEP instruction is executed. 0: Shifts to sleep mode when the SLEEP instruction is executed in high-speed mode or medium-speed mode. 1: Shifts to software standby mode or watch mode when the SLEEP instruction is executed in high-speed mode or medium-speed mode. Note that the value of the SSBY bit does not change even when software standby mode is canceled and making normal operation mode transition by executing an external interrupt. To clear this bit, 0 should be written to. 6 5 4 STS2 STS1 STS0 0 0 0 R/W R/W R/W Standby Timer Select 2 to 0 These bits select the MCU wait time for clock settling to cancel software standby mode or watch mode by executing an external interrupt. With a crystal resonator (see tables 22.3 and 24.6), select a wait time of 8 ms (oscillation settling time) or more, depending on the operating frequency. 000: Standby time = 8192 states 001: Standby time = 16384 states 010: Standby time = 32768 states 011: Standby time = 65536 states 100: Standby time = 131072 states 101: Standby time = 262144 states 110: Reserved 111: Reserved
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Section 22 Power-Down Modes
Bit 3
Bit Name OPE
Initial Value 1
R/W R/W
Description Output Port Enable When in software standby mode or in watch mode, this bit selects whether to retain the output of the address bus and the bus control signals (CS0 to CS7*, AS, RD, HWR, LWR) or to set high impedance. 0: High impedance 1: Retains the output state
2 to 0 -- Note: *
All 0
--
Reserved These bits are always read as 0 and cannot be modified.
The CS1 and CS2 signals are not supported by the H8S/2556 Group.
22.1.2
Module Stop Control Registers A to C (MSTPCRA to MSTPCRC)
MSTPCR performs module stop mode control. When bits in MSTPCR are set to 1, module stop mode is set. When cleared to 0, module stop mode is cleared. *
Bit 7 6 5 4 3 2 1 0
MSTPCRA
Bit Name MSTPA7* MSTPA6 MSTPA5 MSTPA4 MSTPA3* MSTPA2* MSTPA1 MSTPA0
1 1 1
Initial Value 0 0 1 1 1 1 1 1
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Target Module
Data transfer controller (DTC) 16-bit timer pulse unit (TPU) 8-bit timer (TMR_0, TMR_1)
A/D converter 8-bit timer (TMR_2, TMR_3)
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Section 22 Power-Down Modes
*
Bit 7 6 5 4 3 2 1 0
MSTPCRB
Bit Name MSTPB7 MSTPB6 MSTPB5 MSTPB4 MSTPB3
1
Initial Value 1 1 1 1 1
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Target Module Serial communication interface 0 (SCI_0) Serial communication interface 1 (SCI_1) Serial communication interface 2 (SCI_2) I2C bus interface 2_0 (I2C2_0) I2C bus interface 2_1 (I2C2_1)
MSTPB2*1 1 MSTPB1* MSTPB0* 1 1
1
*
Bit 7 6 5 4 3 2 1 0
MSTPCRC
Bit Name MSTPC7 MSTPC6 MSTPC5 MSTPC4 MSTPC3 MSTPC2
1
Initial Value 1 1 1 1 1 1
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Target Module Serial communication interface 3 (SCI_3) Serial communication interface 4 (SCI_4) D/A converter PC break controller (PBC) IEBusTM controller (IEB)*2 Controller area network (HCAN)*3
MSTPC1*1 1 MSTPC0* 1
Notes: 1. The MSTPA7 bit can be read from or written to. This bit is initialized to 0. The write value should always be 0. The MSTPA3, MSTPA2, MSTPB2 to MSTPB0, MSTPC1, and MSTPC0 bits can be read from or written to. These bits are initialized to 1. The write value should always be 1. 2. Supported only by the H8S/2552 Group. 3. Supported only by the H8S/2556 Group.
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Section 22 Power-Down Modes
22.2
Medium-Speed Mode
In high-speed mode, when the SCK2 to SCK0 bits in SCKCR are set to 1, the operating mode changes to medium-speed mode as soon as the current bus cycle ends. In medium-speed mode, the CPU operates on the operating clock (/2, /4, /8, /16, or /32) specified by the SCK2 to SCK0 bits. The bus masters other than the CPU (DTC) also operate in medium-speed mode. On-chip peripheral modules other than the bus masters always operate on the high-speed clock (). In medium-speed mode, a bus access is executed in the specified number of states with respect to the bus master operating clock. For example, if /4 is selected as the operating clock, on-chip memory is accessed in 4 states, and internal I/O registers in 8 states. Medium-speed mode is cleared by clearing all of bits SCK2 to SCK0 to 0. A transition is made to high-speed mode and medium-speed mode is cleared at the end of the current bus cycle. If a SLEEP instruction is executed when the SSBY bit in SBYCR and the LSON bit in LPWRCR are cleared to 0, a transition is made to sleep mode. When sleep mode is cleared by an interrupt, medium-speed mode is restored. When the SLEEP instruction is executed with the SSBY bit = 1, LSON bit = 0, and PSS bit in TCSR_1 (WDT_1) = 0, operation shifts to the software standby mode. When software standby mode is cleared by an external interrupt, medium-speed mode is restored. When the RES pin is set low and medium-speed mode is cancelled, operation shifts to the reset state. The same applies in the case of a reset caused by overflow of the watchdog timer. When the STBY pin is driven low, a transition is made to hardware standby mode. Figure 22.2 shows the timing for transition to and clearance of medium-speed mode.
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Section 22 Power-Down Modes
Medium-speed mode , peripheral module clock
Bus master clock
Internal address bus
SCKCR
SCKCR
Internal write signal
Figure 22.2 Medium-Speed Mode Transition and Clearance Timing
22.3
22.3.1
Sleep Mode
Transition to Sleep Mode
When the SLEEP instruction is executed while the SSBY bit in SBYCR = 0 and the LSON bit in LPWRCR = 0, the CPU enters sleep mode. In sleep mode, CPU operation stops but the contents of the CPU's internal registers are retained. Other peripheral modules do not stop. 22.3.2 Clearing Sleep Mode
Sleep mode is cleared by any interrupt, or signals at the RES, MRES, or STBY pin. * Clearing with an interrupt When an interrupt occurs, sleep mode is cleared and interrupt exception processing starts. Sleep mode is not cleared if the interrupt is disabled, or interrupts other than NMI are masked by the CPU. * Clearing with the RES pin or MRES pin Setting the RES pin or the MRES pin level low selects the reset state. After the stipulated reset input duration, driving the RES pin or MRES pin high starts the CPU performing reset exception processing. * Clearing with the STBY Pin When the STBY pin is driven low, a transition is made to hardware standby mode.
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Section 22 Power-Down Modes
22.4
22.4.1
Software Standby Mode
Transition to Software Standby Mode
A transition is made to software standby mode when the SLEEP instruction is executed while the SSBY bit in SBYCR = 1 and the LSON bit in LPWRCR = 0, and the PSS bit in TCSR_1 (WDT_1) = 0. In this mode, the CPU, on-chip peripheral modules, and oscillator all stop. However, the contents of the CPU's internal registers and the states of on-chip peripheral modules other than the on-chip RAM data, HCAN*1, IEB*2 A/D converter, and some IIC2 functions, and the states of I/O ports are retained. In this mode the oscillator stops, and therefore power consumption is significantly reduced. Notes: 1. Supported only by the H8S/2556 Group. 2. Supported only by the H8S/2552 Group. 22.4.2 Clearing Software Standby Mode
Software standby mode is cleared by an external interrupt (NMI pin, or pins IRQ0 to IRQ7), or by means of the RES pin, MRES pin, or STBY pin. * Clearing with an interrupt When an NMI or IRQ0 to IRQ7 interrupt request signal is input, clock oscillation starts, and after the elapse of the time set in bits STS2 to STS0 in SBYCR, stable clocks are supplied to the entire chip, software standby mode is cleared, and interrupt exception handling is started. When clearing software standby mode with an IRQ0 to IRQ7 interrupt, set the corresponding enable bit/pin function switching bit to 1 and ensure that no interrupt with a higher priority than interrupts IRQ0 to IRQ7 is generated. Software standby mode cannot be cleared if the interrupt has been masked on the CPU side or has been designated as a DTC activation source. * Clearing with the RES pin or MRES pin When the RES pin or MRES pin is driven low, clock oscillation is started. At the same time as clock oscillation starts, clocks are supplied to the entire chip. Note that the RES pin and MRES pin must be held low until clock oscillation settles. When the RES pin or MRES pin goes high, the CPU begins reset exception handling. * Clearing with the STBY pin When the STBY pin is driven low, a transition is made to hardware standby mode.
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Section 22 Power-Down Modes
22.4.3
Oscillation Settling Time after Clearing Software Standby Mode
Set bits STS2 to STS0 in SBYCR so that the standby time is at least 8 ms (the oscillation settling time). Table 22.3 shows the standby times for different operating frequencies and settings of bits STS2 to STS0. Table 22.3 Oscillation Settling Time Settings
STS2 STS1 STS0 Standby Time 0 0 1 1 0 0 1 0 1 0 1 1 X 8192 states 16384 states 32768 states 65536 states 131072 states 262144 states Reserved 25 MHz* 20 MHz 16 MHz 13 MHz 10 MHz 8 MHz 0.33 0.66 1.3 2.6 5.2 10.5 0.41 0.82 1.6 3.3 6.6 13.1 0.51 1.0 2.0 4.1 8.2 16.4 0.63 1.3 2.5 5.0 10.1 20.2 0.8 1.6 3.3 6.6 13.1 26.2 1.0 2.0 4.1 8.2 16.4 32.8 Unit ms
Shading: Recommended time setting Legend: X: Don't care Note: * The H8S/2556 Group supports the operating frequencies up to 20 MHz.
22.4.4
Software Standby Mode Application Example
Figure 22.3 shows an example in which a transition is made to software standby mode at the falling edge on the NMI pin, and software standby mode is cleared at the rising edge on the NMI pin. In this example, an NMI interrupt is accepted with the NMIEG bit in SYSCR cleared to 0 (falling edge specification), then the NMIEG bit is set to 1 (rising edge specification), the SSBY bit is set to 1, and a SLEEP instruction is executed, causing a transition to software standby mode. Software standby mode is then cleared at the rising edge on the NMI pin.
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Section 22 Power-Down Modes
Oscillator
NMI
NMIEG
SSBY
NMI exception Software standby mode handling (power-down mode) NMIEG=1 SSBY=1 SLEEP instruction
Oscillation settling time tosc2
NMI exception handling
Figure 22.3 Software Standby Mode Application Example
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Section 22 Power-Down Modes
22.5
22.5.1
Hardware Standby Mode
Transition to Hardware Standby Mode
When the STBY pin is driven low, a transition is made to hardware standby mode from any mode. In hardware standby mode, all functions enter the reset state and stop operation, resulting in a significant reduction in power consumption. As long as the prescribed voltage is supplied, on-chip RAM data is retained. I/O ports are set to the high-impedance state. Do not change the state of the mode pins (MD2 toMD0) during hardware standby mode. 22.5.2 Clearing Hardware Standby Mode
Hardware standby mode is cleared by means of the STBY pin and the RES pin. When the STBY pin is driven high while the RES pin is low, the reset state is set and clock oscillation is started. Ensure that the RES pin is held low until the clock oscillator settles (at least tosc1 ms). When the RES pin is subsequently driven high, a transition is made to the program execution state via the reset exception handling state. 22.5.3 Hardware Standby Mode Timing
Figure 22.4 shows an example of hardware standby mode timing. When the STBY pin is driven low after the RES pin has been driven low, a transition is made to hardware standby mode. Hardware standby mode is cleared by driving the STBY pin high, waiting for the oscillation settling time, then changing the RES pin from low to high.
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Section 22 Power-Down Modes
Oscillator
RES
STBY
Oscillation settling time tosc1
Reset exception handling
Figure 22.4 Hardware Standby Mode Timing
22.6
Module Stop Mode
Module stop mode can be set for individual on-chip peripheral modules. When the corresponding MSTP bit in MSTPCR is set to 1, module operation stops at the end of the bus cycle and a transition is made to module stop mode. The CPU continues operating independently. When the corresponding MSTP bit is cleared to 0, module stop mode is cleared and the module starts operating at the end of the bus cycle. In module stop mode, the internal states of modules other than the A/D converter are retained. After reset clearance, all modules other than the DTC are in module stop mode. When an on-chip peripheral module is in module stop mode, read/write access to its registers is disabled. Since the operations of the bus controller and I/O port are stopped when sleep mode is entered at the all-module stop state (MSTPCR=H'FFFFFFFF), power consumption can further be reduced.
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Section 22 Power-Down Modes
22.7
22.7.1
Watch Mode
Transition to Watch Mode
CPU operation makes a transition to watch mode when the SLEEP instruction is executed in highspeed mode with SSBY bit in SBYCR = 1, DTON bit in LPWRCR = 0, and PSS bit in TCSR_1 (WDT_1) = 1. In watch mode, the CPU is stopped and peripheral modules other than the WDT_1 are also stopped. The contents of the CPU's internal registers, the data in on-chip RAM, and the statuses of the internal peripheral modules (excluding the HCAN*1, IEB*2, A/D converter, and some IIC2 functions) and I/O ports are retained. To make a transition to watch mode, bits SCK2 to SCK0 in SCKCR must be set to 0. Notes: 1. Supported only by the H8S/2556 Group. 2. Supported only by the H8S/2552 Group. 22.7.2 Clearing Watch Mode
Watch mode is cleared by any interrupt (WOVI1 interrupt, NMI pin, or IRQ0 to IRQ7), or signals at the RES, MRES, or STBY pin. * Clearing with an interrupt When an interrupt occurs, watch mode is cleared and a transition is made to high-speed mode or medium-speed mode. When a transition is made to high-speed mode, a stable clock is supplied to all LSI circuits and interrupt exception processing starts after the time set in the STS2 to STS0 bits in SBYCR has elapsed. In the case of IRQ0 to IRQ7 interrupts, no transition is made from watch mode if the corresponding enable bit/pin function switching bit has been cleared to 0, and, in the case of interrupts from the internal peripheral modules, the interrupt enable register has been set to disable the reception of that interrupt, or is masked by the CPU. See section 22.4.3, Oscillation Settling Time after Clearing Software Standby Mode, for how to set the oscillation settling time when making a transition from watch mode to high-speed mode. * Clearing with the RES pin or MRES pin For clearing watch mode by the RES pin or MRES pin, see section 22.4.2, Clearing Software Standby Mode. * Clearing with the STBY pin When the STBY pin is driven low, a transition is made to hardware standby mode.
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Section 22 Power-Down Modes
22.8
Clock Output Disabled Function
The clock output can be controlled by the PSTOP bit in SCKCR and DDR of the corresponding port. When the PSTOP bit is set to 1, clock is stopped at the end of the bus cycle, and the output is driven high. When the PSTOP bit is cleared to 0, clock output is enabled. When DDR of the corresponding port is cleared to 0, clock output is disabled, and the port becomes an input port. Table 22.4 shows the pin state in each processing state. Table 22.4 Pin State in Each Processing State
DDR PSTOP Hardware standby mode Software standby mode, watch mode Sleep mode High-speed mode, medium-speed mode 0 High impedance High impedance High impedance High impedance 1 0 High impedance Fixed to high output output 1 1 High impedance Fixed to high Fixed to high Fixed to high
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Section 22 Power-Down Modes
22.9
22.9.1
Usage Notes
I/O Port Status
In software standby mode and watch mode, I/O port states are retained. Therefore, there is no reduction in current consumption for the output current when a high-level signal is output. 22.9.2 Current Consumption during Oscillation Settling Wait Period
Current consumption increases during the oscillation settling wait period. 22.9.3 DTC Module Stop
Depending on the operating status of the DTC, the MSTPA6 bit may not be set to 1. Setting of the DTC module stop mode should be carried out only when the respective module is not activated. For details, refer to section 8, Data Transfer Controller (DTC). 22.9.4 On-Chip Peripheral Module Interrupt
* Module stop mode Relevant interrupt operations cannot be performed in module stop mode. Consequently, if module stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU interrupt source or the DTC activation source. Interrupts should therefore be disabled before entering module stop mode. * Watch mode On-chip peripheral modules (DTC, TPU, and IIC2) that stop operation in watch mode cannot clear interrupt sources of the CPU after they make a transition to watch mode while an interrupt is being requested. Interrupts should therefore be disabled before executing the SLEEP instruction and entering watch mode. 22.9.5 Writing to MSTPCR
MSTPCR should only be written to by the CPU.
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Section 22 Power-Down Modes
22.9.6
Entering Watch Mode and DTC Module Stop
To enter watch mode, set the DTC to module stop (write 1 to the MSTPA6 bit) and read the MSTPA6 bit as 1 before making a mode transition. After making a transition to active mode, clear module stop. When the DTC activation source occurs in watch mode, the DTC is activated when module stop is cleared after active mode is entered.
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Section 22 Power-Down Modes
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Section 23 List of Registers
Section 23 List of Registers
The register list gives information on the on-chip I/O register addresses, how the register bits are configured, and the register states in each operating mode. The information is given as shown below. 1. * * * Register Addresses (address order) Registers are listed from the lower allocation addresses. Registers are classified by functional modules. The access size is indicated.
2. Register Bits * Bit configurations of the registers are described in the same order as the Register Addresses (by functional module, in ascending order of addresses). * Reserved bits are indicated by in the bit name. * No entry in the bit-name column indicates that the whole register is allocated as a counter or for holding data. 3. Register States in Each Operating Mode * Register states are described in the same order as the Register Addresses (by functional module, in ascending order of addresses). * The register states described are for the basic operating modes. If there is a specific reset for an on-chip module, refer to the section on that on-chip module.
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Section 23 List of Registers
23.1
Register Addresses (in address order)
The data bus width indicates the numbers of bits by which the register is accessed. The number of access states indicates the number of states based on the specified reference clock.
Number of Access States
2
Register Name DTC mode register A DTC source address register DTC mode register B DTC destination address register DTC transfer count register A DTC transfer count register B IEBus control register IEBus command register IEBus master control register IEBus master unit address register 1 IEBus master unit address register 2
Abbreviation MRA SAR MRB DAR CRA CRB IECTR IECMR IEMCR IEAR1 IEAR2
Number of Bits 8 24 8 24 16 16 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address*
1
Module DTC DTC DTC DTC DTC DTC
Data Bus Width
H'EBC0 to H'EFBF
16/32* 1 16/32* 1 16/32* 1 16/32* 1 16/32* 1 16/32* 1 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
2 2 2 2 2
H'F800 H'F801 H'F802 H'F803 H'F804 H'F805 H'F806 H'F807 H'F808 H'F809 H'F80A H'F80B H'F80C H'F80D H'F80E H'F80F
IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB IEB
IEBus slave address setting register 1 IESA1 IEBus slave address setting register 2 IESA2 IEBus transmit frame length register IEBus transmit buffer register IEBus reception master address register 1 IEBus reception master address register 2 IEBus receive control field register IEBus receive frame length register IEBus receive buffer register IEBus lock address register 1 IEBus lock address register 2 IETBFL IETBR IEMA1 IEMA2 IERCTL IERBFL IERBR IELA1 IELA2
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Section 23 List of Registers
Register Name IEBus general flag register
Abbreviation IEFLG
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'F810 H'F811 H'F812 H'F813 H'F814 H'F815 H'F816 H'FA10 H'FA11 H'FA12 H'FA13 H'FA14 H'FA15 H'FA20 H'FA21 H'FA22 H'FA23 H'FA24 H'FA25 H'FA26 H'FA27 H'FA28 H'FA29 H'FA2A H'FA2B H'FA2C H'FA2D H'FA2E
1
Module IEB IEB IEB IEB IEB IEB IEB PORT PORT PORT PORT PORT PORT IIC2_0 IIC2_0 IIC2_0 IIC2_0 IIC2_0 IIC2_0 IIC2_0 IIC2_0 IIC2_1 IIC2_1 IIC2_1 IIC2_1 IIC2_1 IIC2_1 IIC2_1
Data Bus Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Number of Access States 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
IEBus transmit/runaway status register IETSR IEBus transmit/runaway interrupt enable register IEBus transmit error flag register IEBus receive status register IEIET IETEF IERSR
IEBus receive interrupt enable register IEIER IEBus receive error flag register Port H data direction register Port J data direction register Port H data register Port J data register Port H register Port J register IIC bus control register 1_0 IIC bus control register 2_0 IIC bus mode register_0 IIC bus interrupt enable register_0 IIC bus status register_0 Slave address register_0 IIC bus transmit data register_0 IIC bus receive data register_0 IIC bus control register 1_1 IIC bus control register 2_1 IIC bus mode register_1 IIC bus interrupt enable register_1 IIC bus status register_1 Slave address register_1 IIC bus transmit data register_1 IEREF PHDDR PJDDR PHDR PJDR PORTH PORTJ ICCR1_0 ICCR2_0 ICMR_0 ICIER_0 ICSR_0 SAR_0 ICDRT_0 ICDRR_0 ICCR1_1 ICCR2_1 ICMR_1 ICIER_1 ICSR_1 SAR_1 ICDRT_1
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Section 23 List of Registers
Register Name IIC bus receive data register_1 Master control register General status register Bit configuration register Mailbox configuration register Transmit wait register Transmit wait cancel register Transmit acknowledge register Abort acknowledge register Receive complete register Remote request register Interrupt register Mailbox interrupt mask register Interrupt mask register Receive error counter Transmit error counter Unread message status register Local acceptance filter mask L Local acceptance filter mask H Message control 0[1] Message control 0[2] Message control 0[3] Message control 0[4] Message control 0[5] Message control 0[6] Message control 0[7] Message control 0[8] Message control 1[1] Message control 1[2]
Abbreviation ICDRR_1 MCR GSR BCR MBCR TXPR TXCR TXACK ABACK RXPR RFPR IRR MBIMR IMR REC TEC UMSR LAFML LAFMH MC0[1] MC0[2] MC0[3] MC0[4] MC0[5] MC0[6] MC0[7] MC0[8] MC1[1] MC1[2]
Number of Bits 8 8 8 16 16 16 16 16 16 16 16 16 16 16 8 8 16 16 16 8 8 8 8 8 8 8 8 8 8
Address* H'FA2F H'FB00 H'FB01 H'FB02 H'FB04 H'FB06 H'FB08 H'FB0A H'FB0C H'FB0E H'FB10 H'FB12 H'FB14 H'FB16 H'FB18 H'FB19 H'FB1A H'FB1C H'FB1E H'FB20 H'FB21 H'FB22 H'FB23 H'FB24 H'FB25 H'FB26 H'FB27 H'FB28 H'FB29
1
Module IIC2_1 HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 8 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message control 1[3] Message control 1[4] Message control 1[5] Message control 1[6] Message control 1[7] Message control 1[8] Message control 2[1] Message control 2[2] Message control 2[3] Message control 2[4] Message control 2[5] Message control 2[6] Message control 2[8] Message control 3[1] Message control 3[2] Message control 3[3] Message control 3[4] Message control 3[5] Message control 3[6] Message control 3[7] Message control 3[8] Message control 4[1] Message control 4[2] Message control 4[3] Message control 4[4] Message control 4[5] Message control 4[6] Message control 4[7] Message control 4[8]
Abbreviation MC1[3] MC1[4] MC1[5] MC1[6] MC1[7] MC1[8] MC2[1] MC2[2] MC2[3] MC2[4] MC2[5] MC2[6] MC2[8] MC3[1] MC3[2] MC3[3] MC3[4] MC3[5] MC3[6] MC3[7] MC3[8] MC4[1] MC4[2] MC4[3] MC4[4] MC4[5] MC4[6] MC4[7] MC4[8]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FB2A H'FB2B H'FB2C H'FB2D H'FB2E H'FB2F H'FB30 H'FB31 H'FB32 H'FB33 H'FB34 H'FB35 H'FB37 H'FB38 H'FB39 H'FB3A H'FB3B H'FB3C H'FB3D H'FB3E H'FB3F H'FB40 H'FB41 H'FB42 H'FB43 H'FB44 H'FB45 H'FB46 H'FB47
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message control 5[1] Message control 5[2] Message control 5[3] Message control 5[4] Message control 5[5] Message control 5[6] Message control 5[7] Message control 5[8] Message control 6[1] Message control 6[2] Message control 6[3] Message control 6[4] Message control 6[5] Message control 6[6] Message control 6[7] Message control 6[8] Message control 7[1] Message control 7[2] Message control 7[3] Message control 7[4] Message control 7[5] Message control 7[6] Message control 7[7] Message control 7[8] Message control 8[1] Message control 8[2] Message control 8[3] Message control 8[4] Message control 8[5]
Abbreviation MC5[1] MC5[2] MC5[3] MC5[4] MC5[5] MC5[6] MC5[7] MC5[8] MC6[1] MC6[2] MC6[3] MC6[4] MC6[5] MC6[6] MC6[7] MC6[8] MC7[1] MC7[2] MC7[3] MC7[4] MC7[5] MC7[6] MC7[7] MC7[8] MC8[1] MC8[2] MC8[3] MC8[4] MC8[5]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FB48 H'FB49 H'FB4A H'FB4B H'FB4C H'FB4D H'FB4E H'FB4F H'FB50 H'FB51 H'FB52 H'FB53 H'FB54 H'FB55 H'FB56 H'FB57 H'FB58 H'FB59 H'FB5A H'FB5B H'FB5C H'FB5D H'FB5E H'FB5F H'FB60 H'FB61 H'FB62 H'FB63 H'FB64
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message control 8[6] Message control 8[7] Message control 8[8] Message control 9[1] Message control 9[2] Message control 9[3] Message control 9[4] Message control 9[5] Message control 9[6] Message control 9[7] Message control 9[8] Message control 10[1] Message control 10[2] Message control 10[3] Message control 10[4] Message control 10[5] Message control 10[6] Message control 10[7] Message control 10[8] Message control 11[1] Message control 11[2] Message control 11[3] Message control 11[4] Message control 11[5] Message control 11[6] Message control 11[7] Message control 11[8] Message control 12[1] Message control 12[2]
Abbreviation MC8[6] MC8[7] MC8[8] MC9[1] MC9[2] MC9[3] MC9[4] MC9[5] MC9[6] MC9[7] MC9[8] MC10[1] MC10[2] MC10[3] MC10[4] MC10[5] MC10[6] MC10[7] MC10[8] MC11[1] MC11[2] MC11[3] MC11[4] MC11[5] MC11[6] MC11[7] MC11[8] MC12[1] MC12[2]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FB65 H'FB66 H'FB67 H'FB68 H'FB69 H'FB6A H'FB6B H'FB6C H'FB6D H'FB6E H'FB6F H'FB70 H'FB71 H'FB72 H'FB73 H'FB74 H'FB75 H'FB76 H'FB77 H'FB78 H'FB79 H'FB7A H'FB7B H'FB7C H'FB7D H'FB7E H'FB7F H'FB80 H'FB81
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message control 12[3] Message control 12[4] Message control 12[5] Message control 12[6] Message control 12[7] Message control 12[8] Message control 13[1] Message control 13[2] Message control 13[3] Message control 13[4] Message control 13[5] Message control 13[6] Message control 13[7] Message control 13[8] Message control 14[1] Message control 14[2] Message control 14[3] Message control 14[4] Message control 14[5] Message control 14[6] Message control 14[7] Message control 14[8] Message control 15[1] Message control 15[2] Message control 15[3] Message control 15[4] Message control 15[5] Message control 15[6] Message control 15[7]
Abbreviation MC12[3] MC12[4] MC12[5] MC12[6] MC12[7] MC12[8] MC13[1] MC13[2] MC13[3] MC13[4] MC13[5] MC13[6] MC13[7] MC13[8] MC14[1] MC14[2] MC14[3] MC14[4] MC14[5] MC14[6] MC14[7] MC14[8] MC15[1] MC15[2] MC15[3] MC15[4] MC15[5] MC15[6] MC15[7]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FB82 H'FB83 H'FB84 H'FB85 H'FB86 H'FB87 H'FB88 H'FB89 H'FB8A H'FB8B H'FB8C H'FB8D H'FB8E H'FB8F H'FB90 H'FB91 H'FB92 H'FB93 H'FB94 H'FB95 H'FB96 H'FB97 H'FB98 H'FB99 H'FB9A H'FB9B H'FB9C H'FB9D H'FB9E
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message control 15[8] Message data 0[1] Message data 0[2] Message data 0[3] Message data 0[4] Message data 0[5] Message data 0[6] Message data 0[7] Message data 0[8] Message data 1[1] Message data 1[2] Message data 1[3] Message data 1[4] Message data 1[5] Message data 1[6] Message data 1[7] Message data 1[8] Message data 2[1] Message data 2[2] Message data 2[3] Message data 2[4] Message data 2[5] Message data 2[6] Message data 2[7] Message data 2[8] Message data 3[1] Message data 3[2] Message data 3[3] Message data 3[4]
Abbreviation MC15[8] MD0[1] MD0[2] MD0[3] MD0[4] MD0[5] MD0[6] MD0[7] MD0[8] MD1[1] MD1[2] MD1[3] MD1[4] MD1[5] MD1[6] MD1[7] MD1[8] MD2[1] MD2[2] MD2[3] MD2[4] MD2[5] MD2[6] MD2[7] MD2[8] MD3[1] MD3[2] MD3[3] MD3[4]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FB9F H'FBB0 H'FBB1 H'FBB2 H'FBB3 H'FBB4 H'FBB5 H'FBB6 H'FBB7 H'FBB8 H'FBB9 H'FBBA H'FBBB H'FBBC H'FBBD H'FBBE H'FBBF H'FBC0 H'FBC1 H'FBC2 H'FBC3 H'FBC4 H'FBC5 H'FBC6 H'FBC7 H'FBC8 H'FBC9 H'FBCA H'FBCB
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
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Section 23 List of Registers
Register Name Message data 3[5] Message data 3[6] Message data 3[7] Message data 3[8] Message data 4[1] Message data 4[2] Message data 4[3] Message data 4[4] Message data 4[5] Message data 4[6] Message data 4[7] Message data 4[8] Message data 5[1] Message data 5[2] Message data 5[3] Message data 5[4] Message data 5[5] Message data 5[6] Message data 5[7] Message data 5[8] Message data 6[1] Message data 6[2] Message data 6[3] Message data 6[4] Message data 6[5] Message data 6[6] Message data 6[7] Message data 6[8] Message data 7[1]
Abbreviation MD3[5] MD3[6] MD3[7] MD3[8] MD4[1] MD4[2] MD4[3] MD4[4] MD4[5] MD4[6] MD4[7] MD4[8] MD5[1] MD5[2] MD5[3] MD5[4] MD5[5] MD5[6] MD5[7] MD5[8] MD6[1] MD6[2] MD6[3] MD6[4] MD6[5] MD6[6] MD6[7] MD6[8] MD7[1]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FBCC H'FBCD H'FBCE H'FBCF H'FBD0 H'FBD1 H'FBD2 H'FBD3 H'FBD4 H'FBD5 H'FBD6 H'FBD7 H'FBD8 H'FBD9 H'FBDA H'FBDB H'FBDC H'FBDD H'FBDE H'FBDF H'FBE0 H'FBE1 H'FBE2 H'FBE3 H'FBE4 H'FBE5 H'FBE6 H'FBE7 H'FBE8
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Rev. 6.00 Sep. 24, 2009 Page 820 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Message data 7[2] Message data 7[3] Message data 7[4] Message data 7[5] Message data 7[6] Message data 7[7] Message data 7[8] Message data 8[1] Message data 8[2] Message data 8[3] Message data 8[4] Message data 8[5] Message data 8[6] Message data 8[7] Message data 8[8] Message data 9[1] Message data 9[2] Message data 9[3] Message data 9[4] Message data 9[5] Message data 9[6] Message data 9[7] Message data 9[8] Message data 10[1] Message data 10[2] Message data 10[3] Message data 10[4] Message data 10[5] Message data 10[6]
Abbreviation MD7[2] MD7[3] MD7[4] MD7[5] MD7[6] MD7[7] MD7[8] MD8[1] MD8[2] MD8[3] MD8[4] MD8[5] MD8[6] MD8[7] MD8[8] MD9[1] MD9[2] MD9[3] MD9[4] MD9[5] MD9[6] MD9[7] MD9[8] MD10[1] MD10[2] MD10[3] MD10[4] MD10[5] MD10[6]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FBE9 H'FBEA H'FBEB H'FBEC H'FBED H'FBEE H'FBEF H'FBF0 H'FBF1 H'FBF2 H'FBF3 H'FBF4 H'FBF5 H'FBF6 H'FBF7 H'FBF8 H'FBF9 H'FBFA H'FBFB H'FBFC H'FBFD H'FBFE H'FBFF H'FC00 H'FC01 H'FC02 H'FC03 H'FC04 H'FC05
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Rev. 6.00 Sep. 24, 2009 Page 821 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Message data 10[7] Message data 10[8] Message data 11[1] Message data 11[2] Message data 11[3] Message data 11[4] Message data 11[5] Message data 11[6] Message data 11[7] Message data 11[8] Message data 12[1] Message data 12[2] Message data 12[3] Message data 12[4] Message data 12[5] Message data 12[6] Message data 12[7] Message data 12[8] Message data 13[1] Message data 13[2] Message data 13[3] Message data 13[4] Message data 13[5] Message data 13[6] Message data 13[7] Message data 13[8] Message data 14[1] Message data 14[2] Message data 14[3]
Abbreviation MD10[7] MD10[8] MD11[1] MD11[2] MD11[3] MD11[4] MD11[5] MD11[6] MD11[7] MD11[8] MD12[1] MD12[2] MD12[3] MD12[4] MD12[5] MD12[6] MD12[7] MD12[8] MD13[1] MD13[2] MD13[3] MD13[4] MD13[5] MD13[6] MD13[7] MD13[8] MD14[1] MD14[2] MD14[3]
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FC06 H'FC07 H'FC08 H'FC09 H'FC0A H'FC0B H'FC0C H'FC0D H'FC0E H'FC0F H'FC10 H'FC11 H'FC12 H'FC13 H'FC14 H'FC15 H'FC16 H'FC17 H'FC18 H'FC19 H'FC1A H'FC1B H'FC1C H'FC1D H'FC1E H'FC1F H'FC20 H'FC21 H'FC22
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Rev. 6.00 Sep. 24, 2009 Page 822 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Message data 14[4] Message data 14[5] Message data 14[6] Message data 14[7] Message data 14[8] Message data 15[1] Message data 15[2] Message data 15[3] Message data 15[4] Message data 15[5] Message data 15[6] Message data 15[7] Message data 15[8] D/A data register 0 D/A data register 1 D/A control register Timer control register_2 Timer control register_3 Timer control/status register_2 Timer control/status register_3 Time constant register A_2 Time constant register A_3 Time constant register B_2 Time constant register B_3 Timer counter_2 Timer counter_3 Serial mode register_3
Abbreviation MD14[4] MD14[5] MD14[6] MD14[7] MD14[8] MD15[1] MD15[2] MD15[3] MD15[4] MD15[5] MD15[6] MD15[7] MD15[8] DADR0 DADR1 DACR TCR_2 TCR_3 TCSR_2 TCSR_3 TCORA_2 TCORA_3 TCORB_2 TCORB_3 TCNT_2 TCNT_3 SMR_3
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FC23 H'FC24 H'FC25 H'FC26 H'FC27 H'FC28 H'FC29 H'FC2A H'FC2B H'FC2C H'FC2D H'FC2E H'FC2F H'FDAC H'FDAD H'FDAE H'FDC0 H'FDC1 H'FDC2 H'FDC3 H'FDC4 H'FDC5 H'FDC6 H'FDC7 H'FDC8 H'FDC9 H'FDD0
1
Module HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN HCAN
Data Bus Width 16 16 16 16 16 16 16 16 16 16 16 16 16
Number of Access States 5 5 5 5 5 5 5 5 5 5 5 5 5 2 2 2 2 2 2 2 2 2 2 2 2 2 2
D/A 8 converter D/A 8 converter D/A 8 converter TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 SCI_3 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8
Rev. 6.00 Sep. 24, 2009 Page 823 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Bit rate register_3 Serial control register_3 Transmit data register_3 Serial status register_3 Receive data register_3 Smart card mode register_3 Serial mode register_4 Bit rate register_4 Serial control register_4 Transmit data register_4 Serial status register_4 Receive data register_4 Smart card mode register_4 IC power control register System control register 2 Standby control register System control register System clock control register Mode control register Module stop control register A Module stop control register B Module stop control register C Pin function control register Low power control register Break address register A Break address register B Break control register A Break control register B IRQ sense control register H
Abbreviation BRR_3 SCR_3 TDR_3 SSR_3 RDR_3 SCMR_3 SMR_4 BRR_4 SCR_4 TDR_4 SSR_4 RDR_4 SCMR_4 ICPCR SYSCR2 SBYCR SYSCR SCKCR MDCR MSTPCRA MSTPCRB MSTPCRC PFCR LPWRCR BARA BARB BCRA BCRB ISCRH
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 32 32 8 8 8
Address* H'FDD1 H'FDD2 H'FDD3 H'FDD4 H'FDD5 H'FDD6 H'FDD8 H'FDD9 H'FDDA H'FDDB H'FDDC H'FDDD H'FDDE H'FDE1 H'FDE2 H'FDE4 H'FDE5 H'FDE6 H'FDE7 H'FDE8 H'FDE9 H'FDEA H'FDEB H'FDEC H'FE00 H'FE04 H'FE08 H'FE09 H'FE12
1
Module SCI_3 SCI_3 SCI_3 SCI_3 SCI_3 SCI_3 SCI_4 SCI_4 SCI_4 SCI_4 SCI_4 SCI_4 SCI_4 PORT FLASH
Data Bus Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 SYSTEM 8 BSC 8
SYSTEM 8 PBC PBC PBC PBC INT 8/16 8/16 8/16 8/16 8
Rev. 6.00 Sep. 24, 2009 Page 824 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name IRQ sense control register L IRQ enable register IRQ status register DTC enable register A DTC enable register B DTC enable register C DTC enable register D DTC enable register E DTC enable register F DTC enable register G DTC enable register I DTC vector register Port 1 data direction register Port 2 data direction register Port 3 data direction register Port 5 data direction register Port 7 data direction register Port A data direction register Port B data direction register Port C data direction register Port D data direction register Port E data direction register Port F data direction register Port G data direction register Port A pull-up MOS control register Port B pull-up MOS control register Port C pull-up MOS control register Port D pull-up MOS control register Port E pull-up MOS control register
Abbreviation ISCRL IER ISR DTCERA DTCERB DTCERC DTCERD DTCERE DTCERF DTCERG DTCERI DTVECR P1DDR P2DDR P3DDR P5DDR P7DDR PADDR PBDDR PCDDR PDDDR PEDDR PFDDR PGDDR PAPCR PBPCR PCPCR PDPCR PEPCR
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FE13 H'FE14 H'FE15 H'FE16 H'FE17 H'FE18 H'FE19 H'FE1A H'FE1B H'FE1C H'FE1E H'FE1F H'FE30 H'FE31 H'FE32 H'FE34 H'FE36 H'FE39 H'FE3A H'FE3B H'FE3C H'FE3D H'FE3E H'FE3F H'FE40 H'FE41 H'FE42 H'FE43 H'FE44
1
Module INT INT INT DTC DTC DTC DTC DTC DTC DTC DTC DTC PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT
Data Bus Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 825 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Port 3 open drain control register Port A open drain control register Timer control register_3 Timer mode register_3 Timer I/O control register H_3 Timer I/O control register L_3 Timer interrupt enable register _3 Timer status register_3 Timer counter_3 Timer general register A_3 Timer general register B_3 Timer general register C_3 Timer general register D_3 Timer control register_4 Timer mode register_4 Timer I/O control register_4 Timer interrupt enable register_4 Timer status register_4 Timer counter_4 Timer general register A_4 Timer general register B_4 Timer control register_5 Timer mode register_5 Timer I/O control register_5 Timer interrupt enable register_5 Timer status register_5 Timer counter_5 Timer general register A_5 Timer general register B_5
Abbreviation P3ODR PAODR TCR_3 TMDR_3 TIORH_3 TIORL_3 TIER_3 TSR_3 TCNT_3 TGRA_3 TGRB_3 TGRC_3 TGRD_3 TCR_4 TMDR_4 TIOR_4 TIER_4 TSR_4 TCNT_4 TGRA_4 TGRB_4 TCR_5 TMDR_5 TIOR_5 TIER_5 TSR_5 TCNT_5 TGRA_5 TGRB_5
Number of Bits 8 8 8 8 8 8 8 8 16 16 16 16 16 8 8 8 8 8 16 16 16 8 8 8 8 8 16 16 16
Address* H'FE46 H'FE47 H'FE80 H'FE81 H'FE82 H'FE83 H'FE84 H'FE85 H'FE86 H'FE88 H'FE8A H'FE8C H'FE8E H'FE90 H'FE91 H'FE92 H'FE94 H'FE95 H'FE96 H'FE98 H'FE9A H'FEA0 H'FEA1 H'FEA2 H'FEA4 H'FEA5 H'FEA6 H'FEA8 H'FEAA
1
Module PORT PORT TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_3 TPU_4 TPU_4 TPU_4 TPU_4 TPU_4 TPU_4 TPU_4 TPU_4 TPU_5 TPU_5 TPU_5 TPU_5 TPU_5 TPU_5 TPU_5 TPU_5
Data Bus Width 8 8 8/16 8/16 8/16 8/16 8/16 8/16 16 16 16 16 16 8/16 8/16 8/16 8/16 8/16 16 16 16 8/16 8/16 8/16 8/16 8/16 16 16 16
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 826 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Timer start register Timer synchro register Interrupt priority register A Interrupt priority register B Interrupt priority register C Interrupt priority register D Interrupt priority register E Interrupt priority register F Interrupt priority register G Interrupt priority register H Interrupt priority register I Interrupt priority register J Interrupt priority register K Interrupt priority register L Interrupt priority register M Interrupt priority register O Bus width control register Access state control register Wait control register H Wait control register L Bus control register H Bus control register L RAM emulation register Port 1 data register Port 2 data register Port 3 data register Port 5 data register Port 7 data register Port A data register
Abbreviation TSTR TSYR IPRA IPRB IPRC IPRD IPRE IPRF IPRG IPRH IPRI IPRJ IPRK IPRL IPRM IPRO ABWCR ASTCR WCRH WCRL BCRH BCRL RAMER P1DR P2DR P3DR P5DR P7DR PADR
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FEB0 H'FEB1 H'FEC0 H'FEC1 H'FEC2 H'FEC3 H'FEC4 H'FEC5 H'FEC6 H'FEC7 H'FEC8 H'FEC9 H'FECA H'FECB H'FECC H'FECE H'FED0 H'FED1 H'FED2 H'FED3 H'FED4 H'FED5 H'FEDB H'FF00 H'FF01 H'FF02 H'FF04 H'FF06 H'FF09
1
Module TPU TPU INT INT INT INT INT INT INT INT INT INT INT INT INT INT BSC BSC BSC BSC BSC BSC FLASH PORT PORT PORT PORT PORT PORT
Data Bus Width 8/16 8/16 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 827 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Port B data register Port C data register Port D data register Port E data register Port F data register Port G data register Timer control register_0 Timer mode register_0 Timer I/O control register H_0 Timer I/O control register L_0 Timer interrupt enable register_0 Timer status register_0 Timer counter_0 Timer general register A_0 Timer general register B_0 Timer general register C_0 Timer general register D_0 Timer control register_1 Timer mode register_1 Timer I/O control register_1 Timer interrupt enable register_1 Timer status register_1 Timer counter_1 Timer general register A_1 Timer general register B_1 Timer control register_2 Timer mode register_2 Timer I/O control register_2 Timer interrupt enable register_2
Abbreviation PBDR PCDR PDDR PEDR PFDR PGDR TCR_0 TMDR_0 TIORH_0 TIORL_0 TIER_0 TSR_0 TCNT_0 TGRA_0 TGRB_0 TGRC_0 TGRD_0 TCR_1 TMDR_1 TIOR_1 TIER_1 TSR_1 TCNT_1 TGRA_1 TGRB_1 TCR_2 TMDR_2 TIOR_2 TIER_2
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 16 16 16 16 16 8 8 8 8 8 16 16 16 8 8 8 8
Address* H'FF0A H'FF0B H'FF0C H'FF0D H'FF0E H'FF0F H'FF10 H'FF11 H'FF12 H'FF13 H'FF14 H'FF15 H'FF16 H'FF18 H'FF1A H'FF1C H'FF1E H'FF20 H'FF21 H'FF22 H'FF24 H'FF25 H'FF26 H'FF28 H'FF2A H'FF30 H'FF31 H'FF32 H'FF34
1
Module PORT PORT PORT PORT PORT PORT TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_0 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_1 TPU_2 TPU_2 TPU_2 TPU_2
Data Bus Width 8 8 8 8 8 8 8/16 8/16 8/16 8/16 8/16 8/16 16 16 16 16 16 8/16 8/16 8/16 8/16 8/16 16 16 16 8/16 8/16 8/16 8/16
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 828 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Timer status register_2 Timer counter_2 Timer general register A_2 Timer general register B_2 Timer control register_0 Timer control register_1 Timer control/status register_0 Timer control/status register_1 Timer constant register A_0 Timer constant register A_1 Timer constant register B_0 Timer constant register B_1 Timer counter_0 Timer counter_1 Timer control/status register_0 Timer counter_0 Timer counter_0 Reset control/status register Reset control/status register Serial mode register_0 Bit rate register_0 Serial control register_0 Transmit data register_0 Serial status register_0 Receive data register_0 Smart card mode register_0
Abbreviation TSR_2 TCNT_2 TGRA_2 TGRB_2 TCR_0 TCR_1 TCSR_0 TCSR_1 TCORA_0 TCORA_1 TCORB_0 TCORB_1 TCNT_0 TCNT_1 TCSR_0 TCNT_0 TCNT_0 RSTCSR RSTCSR SMR_0 BRR_0 SCR_0 TDR_0 SSR_0 RDR_0 SCMR_0
Number of Bits 8 16 16 16 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FF35 H'FF36 H'FF38 H'FF3A H'FF68 H'FF69 H'FF6A H'FF6B H'FF6C H'FF6D H'FF6E H'FF6F H'FF70 H'FF71 H'FF74 H'FF74 (write) H'FF75 (read) H'FF76 (write) H'FF77 (read) H'FF78 H'FF79 H'FF7A H'FF7B H'FF7C H'FF7D H'FF7E
1
Module TPU_2 TPU_2 TPU_2 TPU_2 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 WDT_0 WDT_0 WDT_0 WDT_0 WDT_0 SCI_0 SCI_0 SCI_0 SCI_0 SCI_0 SCI_0 SCI_0
Data Bus Width 8/16 16 16 16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 8/16 16 16 16 16 16 8 8 8 8 8 8 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 829 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Serial mode register_1 Bit rate register_1 Serial control register_1 Transmit data register_1 Serial status register_1 Receive data register_1 Smart card mode register_1 Serial mode register_2 Bit rate register_2 Serial control register_2 Transmit data register_2 Serial status register_2 Receive data register_2 Smart card mode register_2 A/D data register AH A/D data register AL A/D data register BH A/D data register BL A/D data register CH A/D data register CL A/D data register DH A/D data register DL A/D control/status register A/D control register Timer control/status register_1 Timer counter_1 Timer counter_1 Flash code control status register
Abbreviation SMR_1 BRR_1 SCR_1 TDR_1 SSR_1 RDR_1 SCMR_1 SMR_2 BRR_2 SCR_2 TDR_2 SSR_2 RDR_2 SCMR_2 ADDRAH ADDRAL ADDRBH ADDRBL ADDRCH ADDRCL ADDRDH ADDRDL ADCSR ADCR TCSR_1 TCNT_1 TCNT_1 FCCS
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FF80 H'FF81 H'FF82 H'FF83 H'FF84 H'FF85 H'FF86 H'FF88 H'FF89 H'FF8A H'FF8B H'FF8C H'FF8D H'FF8E H'FF90 H'FF91 H'FF92 H'FF93 H'FF94 H'FF95 H'FF96 H'FF97 H'FF98 H'FF99 H'FFA2 H'FFA2 (write) H'FFA3 (read) H'FFA4
1
Module SCI_1 SCI_1 SCI_1 SCI_1 SCI_1 SCI_1 SCI_1 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2 SCI_2 A/D A/D A/D A/D A/D A/D A/D A/D A/D A/D WDT_1 WDT_1 WDT_1 FLASH
Data Bus Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 16 16 16 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Rev. 6.00 Sep. 24, 2009 Page 830 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Name Flash program code select register Flash erase code select register Flash key code register Flash MAT select register Flash transfer destination address register Flash vector address code control register Flash vector address data register R Flash vector address data register E Flash vector address data register H Flash vector address data register L Port 1 register Port 2 register Port 3 register Port 4 register Port 5 register Port 7 register Port 9 register Port A register Port B register Port C register Port D register Port E register Port F register Port G register
Abbreviation FPCS FECS FKEY FMATS FTDAR FVACR FVADRR FVADRE FVADRH FVADRL PORT1 PORT2 PORT3 PORT4 PORT5 PORT7 PORT9 PORTA PORTB PORTC PORTD PORTE PORTF PORTG
Number of Bits 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Address* H'FFA5 H'FFA6 H'FFA8 H'FFA9 H'FFAA H'FFAB H'FFAC H'FFAD H'FFAE H'FFAF H'FFB0 H'FFB1 H'FFB2 H'FFB3 H'FFB4 H'FFB6 H'FFB8 H'FFB9 H'FFBA H'FFBB H'FFBC H'FFBD H'FFBE H'FFBF
1
Module FLASH FLASH FLASH FLASH FLASH FLASH FLASH FLASH FLASH FLASH PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT PORT
Data Bus Width 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Number of Access States 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Notes: 1. Lower 16 bits of the address. 2. Allocated on the on-chip RAM. 32-bit bus when DTC accesses as register information, and 16-bit in other cases.
Rev. 6.00 Sep. 24, 2009 Page 831 of 928 REJ09B0099-0600
Section 23 List of Registers
23.2
Register Bits
On-chip peripheral module register addresses and bit names are shown in the following table. 16-bit or 32-bit registers are shown in two or four rows of 8 bits.
Register Abbreviation Bit 7
MRA SAR SM1 Bit23 Bit15 Bit7 MRB DAR CHNE Bit23 Bit15 Bit7 CRA Bit15 Bit7 CRB Bit15 Bit7 IECTR IECMR IEMCR IEAR1 IEAR2 IESA1 IESA2 IETBFL IETBR IEMA1 IEMA2 IERCTL IERBFL IERBR IEE SS IAR3 IAR11 ISA3 ISA11 TBFL7 TBR7 IMA3 IMA11 RBFL7 RBR7
Bit 6
SM0 Bit22 Bit14 Bit6 DISEL Bit22 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 IOL RN2 IAR2 IAR10 ISA2 ISA10 TBFL6 TBR6 IMA2 IMA10 RBFL6 RBR6
Bit 5
DM1 Bit21 Bit13 Bit5 Bit21 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 DEE RN1 IAR1 IAR9 ISA1 ISA9 TBFL5 TBR5 IMA1 IMA9 RBFL5 RBR5
Bit 4
DM0 Bit20 Bit12 Bit4 Bit20 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKS1 RN0 IAR0 IAR8 ISA0 ISA8 TBFL4 TBR4 IMA0 IMA8 RBFL4 RBR4
Bit 3
MD1 Bit19 Bit11 Bit3 Bit19 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 RE CTL3 IMD1 IAR7 ISA7 TBFL3 TBR3 IMA7 RCTL3 RBFL3 RBR3
Bit 2
MD0 Bit18 Bit10 Bit2 Bit18 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 LUEE CMD2 CTL2 IMD0 IAR6 ISA6 TBFL2 TBR2 IMA6 RCTL2 RBFL2 RBR2
Bit 1
DTS Bit17 Bit9 Bit1 Bit17 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 CKS0 CMD1 CTL1 IAR5 ISA5 TBFL1 TBR1 IMA5 RCTL1 RBFL1 RBR1
Bit 0
Sz Bit16 Bit8 Bit0 Bit16 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 CMD0 CTL0 STE IAR4 ISA4 TBFL0 TBR0 IMA4 RCTL0 RBFL0 RBR0
Module
DTC
IEB
Rev. 6.00 Sep. 24, 2009 Page 832 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
IELA1 IELA2 IEFLG IETSR IEIET IETEF IERSR IEIER IEREF PHDDR PJDDR PHDR PJDR PORTH PORTJ ICCR1_0 ICCR2_0 ICMR_0 ICIER_0 ICSR_0 SAR_0 ICDRT_0 ICDRR_0 ICCR1_1 ICCR2_1 ICMR_1 ICIER_1 ICSR_1 SAR_1 ICDRT_1 ICDRR_1 ILA7 CMX TxRDY
Bit 6
ILA6 MRQ
Bit 5
ILA5 SRQ
Bit 4
ILA4 SRE AL
Bit 3
ILA3 ILA11 LCK IRA IRAE UE OVE
Bit 2
ILA2 ILA10 TxS TxSE TIME RxS RxSE RTME
Bit 1
ILA1 ILA9 RSS TxF TxFE RO RxF RxFE DLE
Bit 0
ILA0 ILA8 GG TxE TxEE ACK RxE RxEE PE
Module
IEB
TxRDYE RxRDY
RxRDYE
PH7DDR PH6DDR PH5DDR PH4DDR PH3DDR PH2DDR PH1DDR PH0DDR PORT
PJ7DDR PJ6DDR PJ5DDR PJ4DDR PJ3DDR PJ2DDR PJ1DDR PJ0DDR PH7DR PJ7DR PH7 PJ7 ICE BBSY MLS TIE TDRE SVA6 PH6DR PJ6DR PH6 PJ6 RCVD SCP WAIT TEIE TEND SVA5 PH5DR PJ5DR PH5 PJ5 MST SDAO RIE RDRF SVA4 PH4DR PJ4DR PH4 PJ4 TRS PH3DR PJ3DR PH3 PJ3 CKS3 PH2DR PJ2DR PH2 PJ2 CKS2 BC2 ACKE PH1DR PJ1DR PH1 PJ1 CKS1 IICRST BC1 PH0DR PJ0DR PH0 PJ0 CKS0 BC0 IIC2_0
SDAOP SCLO NAKIE NACKF SVA3 BCWP STIE STOP SVA2
ACKBR ACKBT ADZ FS
AL/OVE AAS SVA1 SVA0
ICDRT7 ICDRT6 ICDRT5 ICDRT4 ICDRT3 ICDRT2 ICDRT1 ICDRT0 ICDRR7 ICDRR6 ICDRR5 ICDRR4 ICDRR3 ICDRR2 ICDRR1 ICDRR0 ICE BBSY MLS TIE TDRE SVA6 RCVD SCP WAIT TEIE TEND SVA5 MST SDAO RIE RDRF SVA4 TRS CKS3 CKS2 BC2 ACKE CKS1 IICRST BC1 CKS0 BC0 IIC2_1
SDAOP SCLO NAKIE NACKF SVA3 BCWP STIE STOP SVA2
ACKBR ACKBT ADZ FS
AL/OVE AAS SVA1 SVA0
ICDRT7 ICDRT6 ICDRT5 ICDRT4 ICDRT3 ICDRT2 ICDRT1 ICDRT0 ICDRR7 ICDRR6 ICDRR5 ICDRR4 ICDRR3 ICDRR2 ICDRR1 ICDRR0
Rev. 6.00 Sep. 24, 2009 Page 833 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MCR GSR BCR MCR7 BCR7 BCR15 MBCR
Bit 6
BCR6 BCR14
Bit 5
MCR5 BCR5 BCR13
Bit 4
BCR4 BCR12
Bit 3
GSR3 BCR3 BCR11
Bit 2
MCR2 GSR2 BCR2 BCR10
Bit 1
MCR1 GSR1 BCR1 BCR9
Bit 0
MCR0 GSR0 BCR0 BCR8
Module
HCAN
MBCR7 MBCR6 MBCR5 MBCR4 MBCR3 MBCR2 MBCR1
MBCR15 MBCR14 MBCR13 MBCR12 MBCR11 MBCR10 MBCR9 MBCR8
TXPR
TXPR7
TXPR6
TXPR5
TXPR4
TXPR3
TXPR2
TXPR1
TXPR8 TXCR8
TXPR15 TXPR14 TXPR13 TXPR12 TXPR11 TXPR10 TXPR9 TXCR TXCR7 TXCR6 TXCR5 TXCR4 TXCR3 TXCR2 TXCR1
TXCR15 TXCR14 TXCR13 TXCR12 TXCR11 TXCR10 TXCR9 TXACK
TXACK7 TXACK6 TXACK5 TXACK4 TXACK3 TXACK2 TXACK1
TXACK15 TXACK14 TXACK13 TXACK12 TXACK11 TXACK10 TXACK9 TXACK8
ABACK
ABACK7 ABACK6 ABACK5 ABACK4 ABACK3 ABACK2 ABACK1
ABACK15 ABACK14 ABACK13 ABACK12 ABACK11 ABACK10 ABACK9 ABACK8
RXPR
RXPR7
RXPR6
RXPR5
RXPR4
RXPR3
RXPR2
RXPR1
RXPR0 RXPR8 RFPR0 RFPR8 IRR0 IRR8
RXPR15 RXPR14 RXPR13 RXPR12 RXPR11 RXPR10 RXPR9 RFPR RFPR7 RFPR6 RFPR5 RFPR4 RFPR3 RFPR2 RFPR1
RFPR15 RFPR14 RFPR13 RFPR12 RFPR11 RFPR10 RFPR9 IRR IRR7 MBIMR IRR6 IRR5 IRR4 IRR12 IRR3 IRR2 IRR1 IRR9
MBIMR7 MBIMR6 MBIMR5 MBIMR4 MBIMR3 MBIMR2 MBIMR1 MBIMR0
MBIMR15 MBIMR14 MBIMR13 MBIMR12 MBIMR11 MBIMR10 MBIMR9 MBIMR8
IMR
IMR7
IMR6 Bit6 Bit6
IMR5 Bit5 Bit5
IMR4 IMR12 Bit4 Bit4
IMR3 Bit3 Bit3
IMR2 Bit2 Bit2
IMR1 IMR9 Bit1 Bit1
IMR8 Bit0 Bit0
REC TEC UMSR
Bit7 Bit7
UMSR7 UMSR6 UMSR5 UMSR4 UMSR3 UMSR2 UMSR1 UMSR0
UMSR15 UMSR14 UMSR13 UMSR12 UMSR11 UMSR10
UMSR9 UMSR8
LAFML
LAFML7 LAFML6 LAFML5 LAFML4 LAFML3 LAFML2 LAFML1 LAFML0
LAFML15 LAFML14 LAFML13 LAFML12 LAFML11 LAFML10 LAFML9 LAFML8
Rev. 6.00 Sep. 24, 2009 Page 834 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
LAFMH
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module
LAFMH7 LAFMH6 LAFMH5
LAFMH1 LAFMH0 HCAN
LAFMH15 LAFMH14 LAFMH13 LAFMH12 LAFMH11 LAFMH10 LAFMH9 LAFMH8
MC0[1] MC0[2] MC0[3] MC0[4] MC0[5] MC0[6] MC0[7] MC0[8] MC1[1] MC1[2] MC1[3] MC1[4] MC1[5] MC1[6] MC1[7] MC1[8] MC2[1] MC2[2] MC2[3] MC2[4] MC2[5] MC2[6] MC2[7] MC2[8] MC3[1] MC3[2] MC3[3] MC3[4] MC3[5]
ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20
ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19
ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18
RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR
DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE
DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2
DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17
DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16
Rev. 6.00 Sep. 24, 2009 Page 835 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MC3[6] MC3[7] MC3[8] MC4[1] MC4[2] MC4[3] MC4[4] MC4[5] MC4[6] MC4[7] MC4[8] MC5[1] MC5[2] MC5[3] MC5[4] MC5[5] MC5[6] MC5[7] MC5[8] MC6[1] MC6[2] MC6[3] MC6[4] MC6[5] MC6[6] MC6[7] MC6[8] MC7[1] MC7[2] MC7[3] MC7[4] ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15
Bit 6
ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14
Bit 5
ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13
Bit 4
ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12
Bit 3
ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3
Bit 2
ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2
Bit 1
ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1
Bit 0
ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 836 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MC7[5] MC7[6] MC7[7] MC7[8] MC8[1] MC8[2] MC8[3] MC8[4] MC8[5] MC8[6] MC8[7] MC8[8] MC9[1] MC9[2] MC9[3] MC9[4] MC9[5] MC9[6] MC9[7] MC9[8] MC10[1] MC10[2] MC10[3] MC10[4] MC10[5] MC10[6] MC10[7] MC10[8] MC11[1] MC11[2] MC11[3] ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15
Bit 6
ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14
Bit 5
ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13
Bit 4
RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12
Bit 3
IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3
Bit 2
ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2
Bit 1
ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1
Bit 0
ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 837 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MC11[4] MC11[5] MC11[6] MC11[7] MC11[8] MC12[1] MC12[2] MC12[3] MC12[4] MC12[5] MC12[6] MC12[7] MC12[8] MC13[1] MC13[2] MC13[3] MC13[4] MC13[5] MC13[6] MC13[7] MC13[8] MC14[1] MC14[2] MC14[3] MC14[4] MC14[5] MC14[6] MC14[7] MC14[8] MC15[1] MC15[2] ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15 ID-20 ID-28 ID-7 ID-15
Bit 6
ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14 ID-19 ID-27 ID-6 ID-14
Bit 5
ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13 ID-18 ID-26 ID-5 ID-13
Bit 4
RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12 RTR ID-25 ID-4 ID-12
Bit 3
IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3 IDE ID-24 ID-3 ID-11 DLC3
Bit 2
ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2 ID-23 ID-2 ID-10 DLC2
Bit 1
ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1 ID-17 ID-22 ID-1 ID-9 DLC1
Bit 0
ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0 ID-16 ID-21 ID-0 ID-8 DLC0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 838 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MC15[3] MC15[4] MC15[5] MC15[6] MC15[7] MC15[8] MD0[1] MD0[2] MD0[3] MD0[4] MD0[5] MD0[6] MD0[7] MD0[8] MD1[1] MD1[2] MD1[3] MD1[4] MD1[5] MD1[6] MD1[7] MD1[8] MD2[1] MD2[2] MD2[3] MD2[4] MD2[5] MD2[6] MD2[7] MD2[8] MD3[1] ID-20 ID-28 ID-7 ID-15 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7
Bit 6
ID-19 ID-27 ID-6 ID-14 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6
Bit 5
ID-18 ID-26 ID-5 ID-13 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5
Bit 4
RTR ID-25 ID-4 ID-12 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4
Bit 3
IDE ID-24 ID-3 ID-11 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3
Bit 2
ID-23 ID-2 ID-10 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2
Bit 1
ID-17 ID-22 ID-1 ID-9 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1
Bit 0
ID-16 ID-21 ID-0 ID-8 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 839 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MD3[2] MD3[3] MD3[4] MD3[5] MD3[6] MD3[7] MD3[8] MD4[1] MD4[2] MD4[3] MD4[4] MD4[5] MD4[6] MD4[7] MD4[8] MD5[1] MD5[2] MD5[3] MD5[4] MD5[5] MD5[6] MD5[7] MD5[8] MD6[1] MD6[2] MD6[3] MD6[4] MD6[5] MD6[6] MD6[7] MD6[8] Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7
Bit 6
Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6
Bit 5
Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5
Bit 4
Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4
Bit 3
Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3
Bit 2
Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2
Bit 1
Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1
Bit 0
Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 840 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MD7[1] MD7[2] MD7[3] MD7[4] MD7[5] MD7[6] MD7[7] MD7[8] MD8[1] MD8[2] MD8[3] MD8[4] MD8[5] MD8[6] MD8[7] MD8[8] MD9[1] MD9[2] MD9[3] MD9[4] MD9[5] MD9[6] MD9[7] MD9[8] MD10[1] MD10[2] MD10[3] MD10[4] MD10[5] MD10[6] MD10[7] Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7
Bit 6
Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6
Bit 5
Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5
Bit 4
Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4
Bit 3
Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3
Bit 2
Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2
Bit 1
Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1
Bit 0
Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 841 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MD10[8] MD11[1] MD11[2] MD11[3] MD11[4] MD11[5] MD11[6] MD11[7] MD11[8] MD12[1] MD12[2] MD12[3] MD12[4] MD12[5] MD12[6] MD12[7] MD12[8] MD13[1] MD13[2] MD13[3] MD13[4] MD13[5] MD13[6] MD13[7] MD13[8] MD14[1] MD14[2] MD14[3] MD14[4] MD14[5] MD14[6] Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7
Bit 6
Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6
Bit 5
Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5
Bit 4
Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4
Bit 3
Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3
Bit 2
Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2
Bit 1
Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1
Bit 0
Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0
Module
HCAN
Rev. 6.00 Sep. 24, 2009 Page 842 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
MD14[7] MD14[8] MD15[1] MD15[2] MD15[3] MD15[4] MD15[5] MD15[6] MD15[7] MD15[8] DADR0 DADR1 DACR TCR_2 TCR_3 TCSR_2 TCSR_3 TCORA_2 TCORA_3 TCORB_2 TCORB_3 TCNT_2 TCNT_3 SMR_3* BRR_3 SCR_3 TDR_3 SSR_3* RDR_3
1 1
Bit 6
Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 DAOE0 CMIEA CMIEA CMFA CMFA Bit6 Bit6 Bit6 Bit6 Bit6 Bit6 CHR (BLK) Bit6 RIE Bit6
Bit 5
Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 DAE OVIE OVIE OVF OVF Bit5 Bit5 Bit5 Bit5 Bit5 Bit5 PE (PE) Bit5 TE Bit5
Bit 4
Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 CCLR1 CCLR1 Bit4 Bit4 Bit4 Bit4 Bit4 Bit4 O/E (O/E) Bit4 RE Bit4
Bit 3
Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 CCLR0 CCLR0 OS3 OS3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3 STOP (BCP1) Bit3 MPIE Bit3 PER (PER) Bit3
Bit 2
Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 CKS2 CKS2 OS2 OS2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2 MP (BCP0) Bit2 TEIE Bit2 TEND (TEND) Bit2
Bit 1
Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 CKS1 CKS1 OS1 OS1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1 CKS1 (CKS1) Bit1 CKE1 Bit1 MPB (MPB) Bit1
Bit 0
Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 CKS0 CKS0 OS0 OS0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0 CKS0 (CKS0) Bit0 CKE0 Bit0 MPBT (MPBT) Bit0
Module
HCAN
Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 DAOE1 CMIEB CMIEB CMFB CMFB Bit7 Bit7 Bit7 Bit7 Bit7 Bit7 C/A (GM) Bit7 TIE Bit7 TDRE (TDRE) Bit7
D/A converter
TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 SCI_3
RDRF ORER FER (RDRF) (ORER) (ERS) Bit6 Bit5 Bit4
Rev. 6.00 Sep. 24, 2009 Page 843 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
SCMR_3 SMR_4* BRR_4 SCR_4 TDR_4 SSR_4* RDR_4 SCMR_4 ICPCR SYSCR2 SBYCR SYSCR SCKCR MDCR MSTPCRA MSTPCRB MSTPCRC PFCR LPWRCR BARA
1 1
Bit 6
CHR (BLK) Bit6 RIE Bit6
Bit 5
PE (PE) Bit5 TE Bit5
Bit 4
O/E (O/E) Bit4 RE Bit4
Bit 3
SDIR STOP (BCP1) Bit3 MPIE Bit3 PER (PER) Bit3 SDIR
Bit 2
SINV MP (BCP0) Bit2 TEIE Bit2 TEND (TEND) Bit2 SINV
Bit 1
CKS1 (CKS1) Bit1 CKE1 Bit1 MPB (MPB) Bit1
Bit 0
SMIF CKS0 (CKS0) Bit0 CKE0 Bit0 MPBT (MPBT) Bit0 SMIF RAME SCK0 MDS0
Module
SCL_3 SCI_4
C/A (GM) Bit7 TIE Bit7 TDRE (TDRE) Bit7 SSBY PSTOP
RDRF ORER FER (RDRF) (ORER) (ERS) Bit6 STS2 Bit5 STS1 INTM1 Bit4 STS0 INTM0
BUFGC BUFGC 2 1 FLSHE OPE NMIEG STCS
PORT FLASH SYSTEM
MRESE SCK2 MDS2 SCK1 MDS1
MSTPA7 MSTPA6 MSTPA5 MSTPA4 MSTPA3 MSTPA2 MSTPA1 MSTPA0 MSTPB7 MSTPB6 MSTPB5 MSTPB4 MSTPB3 MSTPB2 MSTPB1 MSTPB0 MSTPC7 MSTPC6 MSTPC5 MSTPC4 MSTPC3 MSTPC2 MSTPC1 MSTPC0
DTON BAA23 BAA15 BAA7
LSON BAA22 BAA14 BAA6 BAB22 BAB14 BAB6 CDA CDB
BUZZE NESEL BAA21 BAA13 BAA5 BAB21 BAB13 BAB5
AE3
AE2 BAA18 BAA10 BAA2 BAB18 BAB10 BAB2
AE1 STC1 BAA17 BAA9 BAA1 BAB17 BAB9 BAB1
AE0 STC0 BAA16 BAA8 BAA0 BAB16 BAB8 BAB0
BSC SYSTEM PBC
SUBSTP RFCUT
BAA20 BAA12 BAA4 BAB20 BAB12 BAB4
BAA19 BAA11 BAA3 BAB19 BAB11 BAB3
BARB
BAB23 BAB15 BAB7
BCRA BCRB
CMFA CMFB
BAMRA2 BAMRA1 BAMRA0 CSELA1 CSELA0 BIEA BAMRB2 BAMRB1 BAMRB0 CSELB1 CSELB0 BIEB
Rev. 6.00 Sep. 24, 2009 Page 844 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
ISCRH ISCRL IER ISR DTCERA DTCERB DTCERC DTCERD DTCERE DTCERF DTCERG DTCERI DTVECR P1DDR P2DDR P3DDR P5DDR P7DDR PADDR PBDDR PCDDR PDDDR PEDDR PFDDR PGDDR PAPCR PBPCR PCPCR PDPCR PEPCR P3ODR
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module
IRQ7SCB IRQ7SCA IRQ6SCB IRQ6SCA IRQ5SCB IRQ5SCA IRQ4SCB IRQ4SCA INT IRQ3SCB IRQ3SCA IRQ2SCB IRQ2SCA IRQ1SCB IRQ1SCA IRQ0SCB IRQ0SCA
IRQ7E IRQ7F
IRQ6E IRQ6F
IRQ5E IRQ5F
IRQ4E IRQ4F
IRQ3E IRQ3F
IRQ2E IRQ2F
IRQ1E IRQ1F
IRQ0E IRQ0F
DTCEA7 DTCEA6 DTCEA5 DTCEA4 DTCEA3 DTCEA2 DTCEA1 DTCEA0 DTC DTCEB6 DTCEB5 DTCEB4 DTCEB3 DTCEB2 DTCEB1 DTCEB0
DTCEC7 DTCEC6 DTCEC5 DTCEC4 DTCEC3 DTCEC2 DTCEC1 DTCEC0

DTCED5 DTCED4 DTCED3 DTCED2 DTCED1 DTCED0
DTCEE3 DTCEE2 DTCEE1 DTCEE0
DTCEF7 DTCEF6 DTCEF5 DTCEF4 DTCEF3 DTCEF2 DTCEF1 DTCEF0
DTCEG6 DTCEG5 DTCEG3 DTCEG2

DTCEI7 DTCEI6 DTCEI5 DTCEI4
SWDTE DTVEC6 DTVEC5 DTVEC4 DTVEC3 DTVEC2 DTVEC1 DTVEC0 P17DDR P16DDR P15DDR P14DDR P13DDR P12DDR P11DDR P10DDR PORT P27DDR P26DDR P25DDR P24DDR P23DDR P22DDR P21DDR P20DDR P37DDR P36DDR P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR P52DDR P51DDR P50DDR
P77DDR P76DDR P75DDR P74DDR P73DDR P72DDR P71DDR P70DDR
PA7DDR PA6DDR PA5DDR PA4DDR PA3DDR PA2DDR PA1DDR PA0DDR PB7DDR PB6DDR PB5DDR PB4DDR PB3DDR PB2DDR PB1DDR PB0DDR PC7DDR PC6DDR PC5DDR PC4DDR PC3DDR PC2DDR PC1DDR PC0DDR PD7DDR PD6DDR PD5DDR PD4DDR PD3DDR PD2DDR PD1DDR PD0DDR PE7DDR PE6DDR PE5DDR PE4DDR PE3DDR PE2DDR PE1DDR PE0DDR PF7DDR PF6DDR PF5DDR PF4DDR PF3DDR*2 PF2DDR*2 PF1DDR PF0DDR
PG4DDR PG3DDR PG2DDR PG1DDR PG0DDR
PA7PCR PA6PCR PA5PCR PA4PCR PA3PCR PA2PCR PA1PCR PA0PCR PB7PCR PB6PCR PB5PCR PB4PCR PB3PCR PB2PCR PB1PCR PB0PCR PC7PCR PC6PCR PC5PCR PC4PCR PC3PCR PC2PCR PC1PCR PC0PCR PD7PCR PD6PCR PD5PCR PD4PCR PD3PCR PD2PCR PD1PCR PD0PCR PE7PCR PE6PCR PE5PCR PE4PCR PE3PCR PE2PCR PE1PCR PE0PCR P37ODR P36ODR P35ODR P34ODR P33ODR P32ODR P31ODR P30ODR
Rev. 6.00 Sep. 24, 2009 Page 845 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
PAODR TCR_3 TMDR_3 TIORH_3 TIORL_3 TIER_3 TSR_3 TCNT_3
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Module
PA7ODR PA6ODR PA5ODR PA4ODR PA3ODR PA2ODR PA1ODR PA0ODR PORT
CCLR2 IOB3 IOD3 TTGE Bit15 Bit7
CCLR1 IOB2 IOD2 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CCLR1 IOB2 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CCLR1 IOB2
CCLR0 BFB IOB1 IOD1 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CCLR0 IOB1 TCIEU TCFU Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CCLR0 IOB1
CKEG1 BFA IOB0 IOD0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKEG1 IOB0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKEG1 IOB0
CKEG0 MD3 IOA3 IOC3 TGIED TGFD Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3
TPSC2 MD2 IOA2 IOC2 TGIEC TGFC Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2
TPSC1 MD1 IOA1 IOC1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1
TPSC0 MD0 IOA0 IOC0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0
TPU_3
TGRA_3
Bit15 Bit7
TGRB_3
Bit15 Bit7
TGRC_3
Bit15 Bit7
TGRD_3
Bit15 Bit7
TCR_4 TMDR_4 TIOR_4 TIER_4 TSR_4 TCNT_4
IOB3 TTGE TCFD Bit15 Bit7
TPU_4
TGRA_4
Bit15 Bit7
TGRB_4
Bit15 Bit7
TCR_5 TMDR_5 TIOR_5
IOB3
TPU_5
Rev. 6.00 Sep. 24, 2009 Page 846 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
TIER_5 TSR_5 TCNT_5 TTGE TCFD Bit15 Bit7 TGRA_5 Bit15 Bit7 TGRB_5 Bit15 Bit7 TSTR TSYR IPRA IPRB IPRC IPRD IPRE IPRF IPRG IPRH IPRI IPRJ IPRK IPRL IPRM IPRO ABWCR ASTCR WCRH WCRL BCRH BCRL RAMER ABW7 AST7 W71 W31 ICIS1 BRLE
Bit 6
Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 IPR6 ABW6 AST6 W70 W30 ICIS0
Bit 5
TCIEU TCFU Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CST5 SYNC5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 IPR5 ABW5 AST5 W61 W21
Bit 4
TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CST4 SYNC4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 IPR4 ABW4 AST4 W60 W20
Bit 3
Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CST3 SYNC3 ABW3 AST3 W51 W11
Bit 2
Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 CST2 SYNC2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 IPR2 ABW2 AST2 W50 W10
Bit 1
TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 CST1 SYNC1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 IPR1 ABW1 AST1 W41 W01 RAM1
Bit 0
TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 CST0 SYNC0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 IPR0 ABW0 AST0 W40 W00 WAITE RAM0
Module
TPU_5
TPU
INT
BSC
BRSTRM BRSTS1 BRSTS0

RAMS
RAM2
FLASH
Rev. 6.00 Sep. 24, 2009 Page 847 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
P1DR P2DR P3DR P5DR P7DR PADR PBDR PCDR PDDR PEDR PFDR PGDR TCR_0 TMDR_0 TIORH_0 TIORL_0 TIER_0 TSR_0 TCNT_0 P17DR P27DR P37DR P77DR PA7DR PB7DR PC7DR PD7DR PE7DR PF7DR CCLR2 IOB3 IOD3 TTGE Bit15 Bit7 TGRA_0 Bit15 Bit7 TGRB_0 Bit15 Bit7 TGRC_0 Bit15 Bit7 TGRD_0 Bit15 Bit7 TCR_1 TMDR_1 TIOR_1 IOB3
Bit 6
P16DR P26DR P36DR P76DR PA6DR PB6DR PC6DR PD6DR PE6DR PF6DR CCLR1 IOB2 IOD2 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CCLR1 IOB2
Bit 5
P15DR P25DR P35DR P75DR PA5DR PB5DR PC5DR PD5DR PE5DR PF5DR CCLR0 BFB IOB1 IOD1 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CCLR0 IOB1
Bit 4
P14DR P24DR P34DR P74DR PA4DR PB4DR PC4DR PD4DR PE4DR PF4DR
Bit 3
P13DR P23DR P33DR P73DR PA3DR PB3DR PC3DR PD3DR PE3DR PF3DR
Bit 2
P12DR P22DR P32DR P52DR P72DR PA2DR PB2DR PC2DR PD2DR PE2DR PF2DR
Bit 1
P11DR P21DR P31DR P51DR P71DR PA1DR PB1DR PC1DR PD1DR PE1DR PF1DR
Bit 0
P10DR P20DR P30DR P50DR P70DR PA0DR PB0DR PC0DR PD0DR PE0DR PF0DR
Module
PORT
PG4DR PG3DR*2 PG2DR*2 PG1DR PG0DR CKEG1 BFA IOB0 IOD0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKEG1 IOB0 CKEG0 MD3 IOA3 IOC3 TGIED TGFD Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3 TPSC2 MD2 IOA2 IOC2 TGIEC TGFC Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2 TPSC1 MD1 IOA1 IOC1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1 TPSC0 MD0 IOA0 IOC0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0 TPU_1 TPU_0
Rev. 6.00 Sep. 24, 2009 Page 848 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
TIER_1 TSR_1 TCNT_1 TTGE TCFD Bit15 Bit7 TGRA_1 Bit15 Bit7 TGRB_1 Bit15 Bit7 TCR_2 TMDR_2 TIOR_2 TIER_2 TSR_2 TCNT_2 IOB3 TTGE TCFD Bit15 Bit7 TGRA_2 Bit15 Bit7 TGRB_2 Bit15 Bit7 TCR_0 TCR_1 TCSR_0 TCSR_1 TCORA_0 TCORA_1 TCORB_0 TCORB_1 TCNT_0 TCNT_1 CMIEB CMIEB CMFB CMFB Bit7 Bit7 Bit7 Bit7 Bit7 Bit7
Bit 6
Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CCLR1 IOB2 Bit14 Bit6 Bit14 Bit6 Bit14 Bit6 CMIEA CMIEA CMFA CMFA Bit6 Bit6 Bit6 Bit6 Bit6 Bit6
Bit 5
TCIEU TCFU Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 CCLR0 IOB1 TCIEU TCFU Bit13 Bit5 Bit13 Bit5 Bit13 Bit5 OVIE OVIE OVF OVF Bit5 Bit5 Bit5 Bit5 Bit5 Bit5
Bit 4
TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CKEG1 IOB0 TCIEV TCFV Bit12 Bit4 Bit12 Bit4 Bit12 Bit4 CCLR1 CCLR1 ADTE Bit4 Bit4 Bit4 Bit4 Bit4 Bit4
Bit 3
Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CKEG0 MD3 IOA3 Bit11 Bit3 Bit11 Bit3 Bit11 Bit3 CCLR0 CCLR0 OS3 OS3 Bit3 Bit3 Bit3 Bit3 Bit3 Bit3
Bit 2
Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 TPSC2 MD2 IOA2 Bit10 Bit2 Bit10 Bit2 Bit10 Bit2 CKS2 CKS2 OS2 OS2 Bit2 Bit2 Bit2 Bit2 Bit2 Bit2
Bit 1
TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 TPSC1 MD1 IOA1 TGIEB TGFB Bit9 Bit1 Bit9 Bit1 Bit9 Bit1 CKS1 CKS1 OS1 OS1 Bit1 Bit1 Bit1 Bit1 Bit1 Bit1
Bit 0
TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 TPSC0 MD0 IOA0 TGIEA TGFA Bit8 Bit0 Bit8 Bit0 Bit8 Bit0 CKS0 CKS0 OS0 OS0 Bit0 Bit0 Bit0 Bit0 Bit0 Bit0
Module
TPU_1
TPU_2
TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1
Rev. 6.00 Sep. 24, 2009 Page 849 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
TCSR_0 TCNT_0 RSTCSR SMR_0* BRR_0 SCR_0 TDR_0 SSR_0* RDR_0 SCMR_0 SMR_1* BRR_1 SCR_1 TDR_1 SSR_1* RDR_1 SCMR_1 SMR_2* BRR_2 SCR_2 TDR_2 SSR_2* RDR_2 SCMR_2
1 1 1 1 1 1
Bit 6
WT / IT Bit6 RSTE CHR (BLK) Bit6 RIE Bit6
Bit 5
TME Bit5 RSTS PE (PE) Bit5 TE Bit5
Bit 4
Bit4 O/E (O/E) Bit4 RE Bit4
Bit 3
Bit3 STOP (BCP1) Bit3 MPIE Bit3 PER (PER) Bit3 SDIR STOP (BCP1) Bit3 MPIE Bit3 PER (PER) Bit3 SDIR STOP (BCP1) Bit3 MPIE Bit3 PER (PER) Bit3 SDIR
Bit 2
CKS2 Bit2 MP (BCP0) Bit2 TEIE Bit2 TEND (TEND) Bit2 SINV MP (BCP0) Bit2 TEIE Bit2 TEND (TEND) Bit2 SINV MP (BCP0) Bit2 TEIE Bit2 TEND (TEND) Bit2 SINV
Bit 1
CKS1 Bit1 CKS1 (CKS1) Bit1 CKE1 Bit1 MPB (MPB) Bit1 CKS1 (CKS1) Bit1 CKE1 Bit1 MPB (MPB) Bit1 CKS1 (CKS1) Bit1 CKE1 Bit1 MPB (MPB) Bit1
Bit 0
CKS0 Bit0 CKS0 (CKS0) Bit0 CKE0 Bit0 MPBT (MPBT) Bit0 SMIF CKS0 (CKS0) Bit0 CKE0 Bit0 MPBT (MPBT) Bit0 SMIF CKS0 (CKS0) Bit0 CKE0 Bit0 MPBT (MPBT) Bit0 SMIF
Module
WDT_0
OVF Bit7 WOVF C/A (GM) Bit7 TIE Bit7 TDRE (TDRE) Bit7 C/A (GM) Bit7 TIE Bit7 TDRE (TDRE) Bit7 C/A (GM) Bit7 TIE Bit7 TDRE (TDRE) Bit7
SCI_0
RDRF ORER FER (RDRF) (ORER) (ERS) Bit6 CHR (BLK) Bit6 RIE Bit6 Bit5 PE (PE) Bit5 TE Bit5 Bit4 O/E (O/E) Bit4 RE Bit4
SCI_1
RDRF ORER FER (RDRF) (ORER) (ERS) Bit6 CHR (BLK) Bit6 RIE Bit6 Bit5 PE (PE) Bit5 TE Bit5 Bit4 O/E (O/E) Bit4 RE Bit4
SCI_2
RDRF ORER FER (RDRF) (ORER) (ERS) Bit6 Bit5 Bit4
Rev. 6.00 Sep. 24, 2009 Page 850 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
ADDRAH ADDRAL ADDRBH ADDRBL ADDRCH ADDRCL ADDRDH ADDRDL ADCSR ADCR TCSR_1 TCNT_1 FCCS FPCS FECS FKEY FMATS FTDAR FVACR FVADRR FVADRE FVADRH FVADRL PORT1 PORT2 PORT3 PORT4 PORT5 PORT7 PORT9 PORTA AD9 AD1 AD9 AD1 AD9 AD1 AD9 AD1 ADF TRGS1 OVF Bit7 K7 MS7 TDER
Bit 6
AD8 AD0 AD8 AD0 AD8 AD0 AD8 AD0 ADIE TRGS0 WT/IT Bit6 K6 MS6 TDA6
Bit 5
AD7 AD7 AD7 AD7 ADST TME Bit5 K5 MS5 TDA5 Bit29 Bit21 Bit13 Bit5 P15 P25 P35 P45 P75 P95 PA5
Bit 4
AD6 AD6 AD6 AD6 SCAN PSS Bit4 FLER K4 MS4 TDA4 Bit28 Bit20 Bit12 Bit4 P14 P24 P34 P44 P74 P94 PA4
Bit 3
AD5 AD5 AD5 AD5 CH3 CKS1
Bit 2
AD4 AD4 AD4 AD4 CH2 CKS0
Bit 1
AD3 AD3 AD3 AD3 CH1 CKS1 Bit1 K1 MS1 TDA1 Bit25 Bit17 Bit9 Bit1 P11 P21 P31 P41 P51 P71 P91 PA1
Bit 0
AD2 AD2 AD2 AD2 CH0 CKS0 Bit0 SCO PPVS EPVB K0 MS0 TDA0 Bit24 Bit16 Bit8 Bit0 P10 P20 P30 P40 P50 P70 P90 PA0
Module
A/D converter
RST/NMI CKS2
WDT_1
Bit3 K3 MS3 TDA3 Bit27 Bit19 Bit11 Bit3 P13 P23 P33 P43 P73 P93 PA3
Bit2 K2 MS2 TDA2 Bit26 Bit18 Bit10 Bit2 P12 P22 P32 P42 P52 P72 P92 PA2
FLASH
FVCHGE
Bit31 Bit23 Bit15 Bit7 P17 P27 P37 P47 P77 P97 PA7
Bit30 Bit22 Bit14 Bit6 P16 P26 P36 P46 P76 P96 PA6
PORT
Rev. 6.00 Sep. 24, 2009 Page 851 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation Bit 7
PORTB PORTC PORTD PORTE PORTF PORTG PB7 PC7 PD7 PE7 PF7
Bit 6
PB6 PC6 PD6 PE6 PF6
Bit 5
PB5 PC5 PD5 PE5 PF5
Bit 4
PB4 PC4 PD4 PE4 PF4 PG4
Bit 3
PB3 PC3 PD3 PE3 PF3 PG3*
2
Bit 2
PB2 PC2 PD2 PE2 PF2 PG2*
2
Bit 1
PB1 PC1 PD1 PE1 PF1 PG1
Bit 0
PB0 PC0 PD0 PE0 PF0 PG0
Module
PORT
Notes: 1. Some bits have different names in normal mode and in smart card interface mode. The bit name in smart card interface mode is enclosed in parentheses. 2. Reserved in the H8S/2556 Group.
Rev. 6.00 Sep. 24, 2009 Page 852 of 928 REJ09B0099-0600
Section 23 List of Registers
23.3
Register Abbreviation MRA SAR MRB DAR CRA CRB IECTR IECMR IEMCR IEAR1 IEAR2 IESA1 IESA2 IETBFL IETBR IEMA1 IEMA2 IERCTL IERBFL IERBR IELA1 IELA2 IEFLG IETSR IEIET IETEF IERSR IEIER IEREF
Register States in Each Operating Mode
Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Sleep Module Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized IEB Module DTC
Rev. 6.00 Sep. 24, 2009 Page 853 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation PHDDR PJDDR PHDR PJDR PORTH PORTJ ICCR1_0 ICCR2_0 ICMR_0 ICIER_0 ICSR_0 SAR_0 ICDRT_0 ICDRR_0 ICCR1_1 ICCR2_1 ICMR_1 ICIER_1 ICSR_1 SAR_1 ICDRT_1 ICDRR_1 MCR GSR BCR MBCR TXPR TXCR TXACK ABACK RXPR RFPR Reset Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized HCAN IIC2_1 IIC2_0 Module PORT
Rev. 6.00 Sep. 24, 2009 Page 854 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation IRR MBIMR IMR REC TEC UMSR LAFML LAFMH MC0[1] MC0[2] MC0[3] MC0[4] MC0[5] MC0[6] MC0[7] MC0[8] MC1[1] MC1[2] MC1[3] MC1[4] MC1[5] MC1[6] MC1[7] MC1[8] MC2[1] MC2[2] MC2[3] MC2[4] MC2[5] MC2[6] MC2[7] MC2[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 855 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MC3[1] MC3[2] MC3[3] MC3[4] MC3[5] MC3[6] MC3[7] MC3[8] MC4[1] MC4[2] MC4[3] MC4[4] MC4[5] MC4[6] MC4[7] MC4[8] MC5[1] MC5[2] MC5[3] MC5[4] MC5[5] MC5[6] MC5[7] MC5[8] MC6[1] MC6[2] MC6[3] MC6[4] MC6[5] MC6[6] MC6[7] MC6[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 856 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MC7[1] MC7[2] MC7[3] MC7[4] MC7[5] MC7[6] MC7[7] MC7[8] MC8[1] MC8[2] MC8[3] MC8[4] MC8[5] MC8[6] MC8[7] MC8[8] MC9[1] MC9[2] MC9[3] MC9[4] MC9[5] MC9[6] MC9[7] MC9[8] MC10[1] MC10[2] MC10[3] MC10[4] MC10[5] MC10[6] MC10[7] MC10[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 857 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MC11[1] MC11[2] MC11[3] MC11[4] MC11[5] MC11[6] MC11[7] MC11[8] MC12[1] MC12[2] MC12[3] MC12[4] MC12[5] MC12[6] MC12[7] MC12[8] MC13[1] MC13[2] MC13[3] MC13[4] MC13[5] MC13[6] MC13[7] MC13[8] MC14[1] MC14[2] MC14[3] MC14[4] MC14[5] MC14[6] MC14[7] MC14[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 858 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MC15[1] MC15[2] MC15[3] MC15[4] MC15[5] MC15[6] MC15[7] MC15[8] MD0[1] MD0[2] MD0[3] MD0[4] MD0[5] MD0[6] MD0[7] MD0[8] MD1[1] MD1[2] MD1[3] MD1[4] MD1[5] MD1[6] MD1[7] MD1[8] MD2[1] MD2[2] MD2[3] MD2[4] MD2[5] MD2[6] MD2[7] MD2[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 859 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MD3[1] MD3[2] MD3[3] MD3[4] MD3[5] MD3[6] MD3[7] MD3[8] MD4[1] MD4[2] MD4[3] MD4[4] MD4[5] MD4[6] MD4[7] MD4[8] MD5[1] MD5[2] MD5[3] MD5[4] MD5[5] MD5[6] MD5[7] MD5[8] MD6[1] MD6[2] MD6[3] MD6[4] MD6[5] MD6[6] MD6[7] MD6[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 860 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MD7[1] MD7[2] MD7[3] MD7[4] MD7[5] MD7[6] MD7[7] MD7[8] MD8[1] MD8[2] MD8[3] MD8[4] MD8[5] MD8[6] MD8[7] MD8[8] MD9[1] MD9[2] MD9[3] MD9[4] MD9[5] MD9[6] MD9[7] MD9[8] MD10[1] MD10[2] MD10[3] MD10[4] MD10[5] MD10[6] MD10[7] MD10[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 861 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MD11[1] MD11[2] MD11[3] MD11[4] MD11[5] MD11[6] MD11[7] MD11[8] MD12[1] MD12[2] MD12[3] MD12[4] MD12[5] MD12[6] MD12[7] MD12[8] MD13[1] MD13[2] MD13[3] MD13[4] MD13[5] MD13[6] MD13[7] MD13[8] MD14[1] MD14[2] MD14[3] MD14[4] MD14[5] MD14[6] MD14[7] MD14[8] Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 862 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation MD15[1] MD15[2] MD15[3] MD15[4] MD15[5] MD15[6] MD15[7] MD15[8] DADR0 DADR1 DACR TCR_2 TCR_3 TCSR_2 TCSR_3 TCORA_2 TCORA_3 TCORB_2 TCORB_3 TCNT_2 TCNT_3 SMR_3 BRR_3 SCR_3 TDR_3 SSR_3 RDR_3 SCMR_3 SMR_4 BRR_4 SCR_4 TDR_4 Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized SCI_4 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 TMR_2 TMR_3 SCI_3 D/A Module HCAN
Rev. 6.00 Sep. 24, 2009 Page 863 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation SSR_4 RDR_4 SCMR_4 ICPCR SYSCR2 SBYCR SYSCR SCKCR MDCR MSTPCRA MSTPCRB MSTPCRC PFCR LPWRCR BARA BARB BCRA BCRB ISCRH ISCRL IER ISR DTCERA DTCERB DTCERC DTCERD DTCERE DTCERF DTCERG DTCERI DTVECR Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized* Initialized Initialized Initialized Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Watch Initialized Initialized Software Standby Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized DTC INT BSC SYSTEM PBC PORT FLASH SYSTEM Module SCI_4
Rev. 6.00 Sep. 24, 2009 Page 864 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation P1DDR P2DDR P3DDR P5DDR P7DDR PADDR PBDDR PCDDR PDDDR PEDDR PFDDR PGDDR PAPCR PBPCR PCPCR PDPCR PEPCR P3ODR PAODR TCR_3 TMDR_3 TIORH_3 TIORL_3 TIER_3 TSR_3 TCNT_3 TGRA_3 TGRB_3 TGRC_3 TGRD_3 TCR_4 TMDR_4 Reset Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Watch Software Standby Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized TPU_4 TPU_3 Module PORT
Rev. 6.00 Sep. 24, 2009 Page 865 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation TIOR_4 TIER_4 TSR_4 TCNT_4 TGRA_4 TGRB_4 TCR_5 TMDR_5 TIOR_5 TIER_5 TSR_5 TCNT_5 TGRA_5 TGRB_5 TSTR TSYR IPRA IPRB IPRC IPRD IPRE IPRF IPRG IPRH IPRI IPRJ IPRK IPRL IPRM IPRO ABWCR ASTCR Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized* Initialized* MediumHigh-Speed Speed Module Sleep Stop Watch Software Standby Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized BSC INT TPU TPU_5 Module TPU_4
Rev. 6.00 Sep. 24, 2009 Page 866 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation WCRH WCRL BCRH BCRL RAMER P1DR P2DR P3DR P5DR P7DR PADR PBDR PCDR PDDR PEDR PFDR PGDR TCR_0 TMDR_0 TIORH_0 TIORL_0 TIER_0 TSR_0 TCNT_0 TGRA_0 TGRB_0 TGRC_0 TGRD_0 TCR_1 TMDR_1 TIOR_1 TIER_1 Reset Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized* Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Watch Software Standby Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized TPU_1 TPU_0 FLASH PORT Module BSC
Rev. 6.00 Sep. 24, 2009 Page 867 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation TSR_1 TCNT_1 TGRA_1 TGRB_1 TCR_2 TMDR_2 TIOR_2 TIER_2 TSR_2 TCNT_2 TGRA_2 TGRB_2 TCR_0 TCR_1 TCSR_0 TCSR_1 TCORA_0 TCORA_1 TCORB_0 TCORB_1 TCNT_0 TCNT_1 TCSR_0 TCNT_0 RSTCSR SMR_0 BRR_0 SCR_0 TDR_0 SSR_0 RDR_0 SCMR_0 Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Watch Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized SCI_0 TMR_2 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 TMR_0 TMR_1 WDT_0 TPU_2 Module TPU_1
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Section 23 List of Registers
Register Abbreviation SMR_1 BRR_1 SCR_1 TDR_1 SSR_1 RDR_1 SCMR_1 SMR_2 BRR_2 SCR_2 TDR_2 SSR_2 RDR_2 SCMR_2 ADDRAH ADDRAL ADDRBH ADDRBL ADDRCH ADDRCL ADDRDH ADDRDL ADCSR ADCR TCSR_1 TCNT_1 FCCS FPCS FECS FKEY FMATS FTDAR Reset Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Watch Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Software Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized Initialized FLASH WDT_1 A/D SCI_2 Module SCI_1
Rev. 6.00 Sep. 24, 2009 Page 869 of 928 REJ09B0099-0600
Section 23 List of Registers
Register Abbreviation FVACR FVADRR FVADRE FVADRH FVADRL PORT1 PORT2 PORT3 PORT4 PORT5 PORT7 PORT9 PORTA PORTB PORTC PORTD PORTE PORTF PORTG Reset Initialized Initialized Initialized Initialized Initialized MediumHigh-Speed Speed Module Sleep Stop Watch Software Standby Initialized Initialized Initialized Initialized Initialized Hardware Standby Initialized Initialized Initialized Initialized Initialized PORT Module FLASH
Notes: is not initialized. * Not initialized by a manual reset.
Rev. 6.00 Sep. 24, 2009 Page 870 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Section 24 Electrical Characteristics
24.1 Power Supply Voltage and Operating Frequency Range
Power supply voltage and operating frequency ranges (shaded areas) are shown in figure 24.1.
(1) Power supply voltage and range of oscillation frequency f (MHz) 26 System clock f (kHz) 32.768 Subclock
8.0 0 3.0 5.5 Vcc (V) * Active (high-speed/medium-speed) mode * Sleep mode 0 3.0 * All operating modes 5.5 Vcc (V)
(2) Power supply voltage and range of instruction execution t (ns) 38 System clock
125 0 3.0 5.5 Vcc (V) * Active (high-speed/medium-speed) mode
Note: * When the IEBus is used in the H8S/2552 Group, the system clock should be selected among 12 MHz, 12.58 MHz, 18 MHz, 18.87 MHz, 24 MHz, and 25.16 MHz. When not using the IEBus or in the H8S/2506 Group, the system clock can be selected arbitrarily from 8 MHz to 26 MHz.
Figure 24.1 (1) Power Supply Voltage and Operating Ranges (H8S/2552 Group, H8S/2506 Group)
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Section 24 Electrical Characteristics
(1) Power supply voltage and range of oscillation frequency f (MHz) 20 System clock f (kHz) 32.768 Subclock
8.0 0 5.5 Vcc (V) 3.0 * Active (high-speed/medium-speed) mode * Sleep mode 0 3.0 * All operating modes 5.5 Vcc (V)
(2) Power supply voltage and range of instruction execution t (ns) 50 System clock
125 0 3.0 5.5 Vcc (V) * Active (high-speed/medium-speed) mode
Figure 24.1 (2) Power Supply Voltage and Operating Ranges (H8S/2556 Group)
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Section 24 Electrical Characteristics
24.2
Absolute Maximum Ratings
Table 24.1 lists the absolute maximum ratings. Table 24.1 Absolute Maximum Ratings
Item Power supply voltage*
1
Symbol VCC P1VCC, P2VCC Vin Vin Vin Vin Vin Vref AVCC VAN Topr Tstg
Value -0.3 to +6.5 -0.3 to +6.5 -0.3 to AVCC +0.3 -0.3 to P2VCC +0.3 -0.3 to P1VCC +0.3 -0.3 to P1VCC +0.3 -0.3 to VCC +0.3 -0.3 to AVCC +0.3 -0.3 to +6.5 -0.3 to AVCC +0.3 Regular specifications: -20 to +75 Wide-range specifications: -40 to +85
Unit V V V V V V V V V V C
Input voltage (ports 4, 9) Input voltage (ports 1, 2, 3, 7) Input voltage (ports 5, A to H, J) Input voltage (port HRxD)* Input voltage (others)* Reference voltage Analog power supply voltage Analog input voltage Operating temperature
3 2
Storage temperature
-55 to +125
C
Caution: Permanent damage to the chip may result if absolute maximum rating are exceeded. Notes: 1. Do not apply a power supply voltage to the VCL pin. The capacitor should be connected to GND externally. 2. HRxD is supported in the H8S/2556 Group only. Do not apply a power supply voltage to HTxD because it is an output pin. 3. Do not connect to the OSC1 pin or OSC2 pin without a 32.768-kHz crystal resonator. If no subclock is required, connect the OSC1 pin to VSS and leave the OSC2 pin open.
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Section 24 Electrical Characteristics
24.3
DC Characteristics
Table 24.2 lists the DC characteristics. Table 24.3 lists the permissible output currents. Table 24.4 lists the bus drive characteristics. Table 24.2 DC Characteristics (1) Conditions: VCC = 3.0 V to 5.5 V, P1VCC = 3.0 V to 5.5 V, P2VCC = 3.0 V to 5.5 V, AVCC = 3.0 V to 5.5 V*2, Vref = 3.0 V to AVCC*2, VSS = AVSS = 0 V*2, Ta = -20C to +75C (regular specifications)*1, Ta = -40C to +85C (wide-range specifications)
Item Schmitt trigger input voltage IRQ0, IRQ1, IRQ4, IRQ5 Symbol Min. VT VT
-
Typ.
Max. P2VCC x 0.8 P1VCC x 0.8 VCC + 0.3
Unit V V V V V V V
Test Conditions
P2VCC x 0.2 P2VCC x 0.05 P1VCC x 0.2 P1VCC x 0.05 VCC x 0.9
+
VT VT IRQ2, IRQ3, IRQ6, IRQ7 VT VT
-
+
P2VCC = 5.0 V 0.5 V
+
VT VT Input high voltage RES, STBY, NMI, MD2 to MD0 EXTAL Ports 1 to 3, 7 Ports 5, A to H, J, 5 HRxD* Ports 4, 9 Input low voltage RES, STBY, NMI MD2 to MD0 EXTAL, TEST Ports 1 to 3, 7 Ports 5, A to H, J, 5 HRxD* Ports 4, 9 VIL VIH
+
P1VCC = 5.0 V 0.5 V
VCC x 0.8 P2VCC x 0.8 P1VCC x 0.8 AVCC x 0.8 - 0.3 - 0.3 - 0.3 - 0.3 - 0.3

VCC + 0.3 P2VCC + 0.3 P1VCC + 0.3 AVCC + 0.3 VCC x 0.1 VCC x 0.2 P2VCC x 0.2 P1VCC x 0.2 AVCC x 0.2
V V V V V V V V V
Rev. 6.00 Sep. 24, 2009 Page 874 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Item Output high 6 voltage* Ports 1 to 3, 7
Symbol Min. VOH P2VCC - 0.5 P2VCC - 1.0 Ports 5, A to H, J, 5 HTxD* P34, P35*
3
Typ.
Max.
Unit V V V V V
Test Conditions IOH = - 200 A IOH = - 1 mA IOH = - 200 A IOH = - 1 mA IOH = - 100 A
P2VCC = 5.0 V 0.5 V
P1VCC - 0.5 P1VCC - 1.0 P2VCC - 2.7
P2VCC - 2.0
V
IOH = - 100 A
P2VCC = 3.3 V 0.3 V
Output low 6 voltage* Input leakage current
All output 4 pins* RES STBY, NMI, MD2 to MD0, TEST HRxD*
5
VOL | lin |

0.4
V A A
IOL = 0.8 mA
1.0 1.0
Vin = 0.2 to VCC- 0.2 V Vin = 0.2 to VCC- 0.2 V Vin = 0.2 to P1VCC - 0.2 V Vin = 0.2 to AVCC - 0.2 V Vin = 0.2 to P2VCC - 0.2 V Vin = 0.2 to P1VCC - 0.2 V Vin = 0 V
| lTSI | -lP 10

1.0 1.0 1.0 1.0 300
A A A A A
Ports 4, 9 Three-state leakage current (off state) Input pull-up MOS current Ports 1 to 3, 7 Ports 5, A to H, J Ports A to E
Notes: 1. The regular specifications are supported in the H8S/2506 Group only. 2. If the A/D and D/A converters are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 3.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 3. P35/SCK1/SCL0 and P34/SDA0 are NMOS push/pull outputs. To output high level signal, pull-up resistance must be connected externally. 4. When ICE = 0. To output low when bus drive function is selected is determined in table 24.4, Bus Drive Characteristics. 5. HRxD and HTxD are supported in the H8S/2556 Group only. 6. When P1VCC = 5.0 V 0.5 V (BUFGC1 in ICPCR is 0), P1VCC = 3.3 V 0.3 V (BUFGC1 in ICPCR is 1), P2VCC = 5.0 V 0.5 V (BUFGC2 in ICPCR is 0), and P2VCC = 3.3 V 0.3 V (BUFGC2 in ICPCR is 1).
Rev. 6.00 Sep. 24, 2009 Page 875 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.2 DC Characteristics (2) Conditions (for H8S/2552 Group and H8S/2506 Group): VCC = 3.0V to 5.5 V, P1VCC = 3.0V to 5.5 V, P2VCC = 3.0V to 5.5 V, AVCC = 3.0V to 5.5V*2, Vref = 3.0V to AVCC*2, VSS = AVSS = 0 V*2, Ta = -20C to +75C (regular specifications)*1, Ta = -40C to +85C (wide-range specifications)
Item Input capacitance RES NMI P32 to P35 All input pins except RES, NMI, and P32 to P35 Current Normal 3 consumption* operation Sleep mode All modules stopped Mediumspeed mode (/32) Watch mode Standby mode ICC*
4
Symbol Cin
Min.
Typ.
Max. 30 30 20 15
Unit pF pF pF pF
Test Conditions Vin = 0 V f = 8 MHz Ta = 25C

34 VCC = 5.0 V 26 VCC = 5.0 V 20 VCC = 5.0 V 22 VCC = 5.0 V 30 VCC = 5.0 V 22 VCC = 5.0 V
50 VCC = 5.5 V 40 VCC = 5.5 V
mA mA mA mA
f = 26 MHz f = 26 MHz f = 26 MHz, (reference values) f = 26 MHz, (reference values) Using 32.768 kHz crystal resonator Ta 50C 32.768 kHz not used 50C < Ta 32.768 kHz not used

150 VCC = 5.5 V 100 VCC = 5.5 V 140 VCC = 5.5 V 5.0
A A
Analog power supply current
During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion
AlCC
3.0
mA
2.0
10
A
Rev. 6.00 Sep. 24, 2009 Page 876 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Item Reference current During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion RAM standby voltage
Symbol AlCC
Min.
Typ. 2.0
Max. 4.0
Unit mA
Test Conditions
2.0
6.0
A
VRAM
3.0
V
Notes: 1. The regular specifications are supported in the H8S/2506 Group only. 2. If the A/D and D/A converters are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 3.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 3. Current consumption values are for P1VCC = P2VCC = AVCC = VCC, VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up MOS in the off state. 4. ICC depends on VCC and f as follows: ICC max. = -9.49 (mA) + 5.31 (mA/V) x Vcc + 1.00 (mA/MHz) x f + 0.03 (mA/(MHz * V)) x VCC x f (normal operation) ICC max. = -8.92 (mA) + 5.22 (mA/V) x Vcc + 0.63 (mA/MHz) x f + 0.027 (mA/(MHz * V)) x VCC x f (sleep mode)
Rev. 6.00 Sep. 24, 2009 Page 877 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.2 DC Characteristics (3) Conditions (for H8S/2556 Group): VCC = 3.0V to 5.5 V, P1VCC = 3.0V to 5.5 V, P2VCC = 3.0V to 5.5 V, AVCC = 3.0V to 5.5V*1, Vref = 3.0V to AVCC*1, VSS = AVSS = 0 V*1, Ta = -40C to +85C (wide-range specifications)
Item Input capacitance RES NMI P32 to P35 All input pins except RES, NMI, and P32 to P35 Current Normal 2 consumption* operation Sleep mode All modules stopped Mediumspeed mode (/32) Watch mode Standby mode ICC*
3
Symbol Cin
Min.
Typ.
Max. 30 30 20 15
Unit pF pF pF pF
Test Conditions Vin = 0 V f = 8 MHz Ta = 25C

28 VCC =5.0 V 22 VCC = 5.0 V 16 VCC = 5.0 V 18 VCC = 5.0 V 30 VCC = 5.0 V 22 VCC = 5.0 V
43 VCC = 5.5 V 34 VCC = 5.5 V
mA mA mA mA
f = 20 MHz f = 20 MHz f = 20 MHz, (reference values) f = 20 MHz, (reference values) Using 32.768 kHz crystal resonator Ta 50C 32.768 kHz not used 50C < Ta 32.768 kHz not used

150 VCC = 5.5 V 100 VCC = 5.5 V 140 VCC = 5.5 V 5.0
A A
Analog power supply current
During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion
AlCC
3.0
mA
2.0
10
A
Rev. 6.00 Sep. 24, 2009 Page 878 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Item Reference current During A/D conversion, D/A conversion Waiting for A/D conversion, D/A conversion RAM standby voltage
Symbol AlCC
Min.
Typ. 2.0
Max. 4.0
Unit mA
Test Conditions
2.0
6.0
A
VRAM
3.0
V
Notes: 1. If the A/D and D/A converters are not used, do not leave the AVCC, Vref, and AVSS pins open. Apply a voltage 3.0 V to 5.5 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC. 2. Current consumption values are for P1VCC = P2VCC = AVCC = VCC, VIH min. = VCC - 0.2 V, VIL max. = 0.2 V with all output pins unloaded and the on-chip pull-up MOS in the off state. 3. ICC depends on VCC and f as follows: ICC max. = -9.49 (mA) + 5.31 (mA/V) x Vcc + 1.00 (mA/MHz) x f + 0.03 (mA/(MHz * V)) x VCC x f (normal operation) ICC max. = -8.58 (mA) + 5.04 (mA/V) x Vcc + 0.60 (mA/MHz) x f + 0.026 (mA/(MHz * V)) x VCC x f (sleep mode)
Rev. 6.00 Sep. 24, 2009 Page 879 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.3 Permissible Output Currents Conditions: VCC = 3.0 V to 5.5 V, P1VCC = 3.0 V to 5.5 V, P2VCC = 3.0 V to 5.5 V, AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications)
Item Permissible output low current (per pin) SCL1, SCL0, SDA1, SDA0 Output pins except SCL1, SCL0, SDA1, and SDA0 Permissible output low current (total) Permissible output high current (per pin) Permissible output high current (total) Total of all output pins All output pins Total of all output pins IOL -IOH -IOH Symbol Min. IOL -- -- -- -- -- Typ. -- -- -- -- -- Max. 10 1.0 80 1.0 40 Unit mA mA mA mA mA
Notes: To protect chip reliability, do not exceed the output current values in table 24.3. * The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 880 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.4 Bus Drive Characteristics Conditions: VCC = 3.0 V to 5.5 V, P1VCC = 3.0 V to 5.5 V, P2VCC = 3.0 V to 5.5 V, AVCC = 3.0 V to 5.5 V*2, Vref = 3.0 V to AVCC*2, VSS = AVSS = 0 V*2, Ta = -20C to +75C (regular specifications)*1, Ta = -40C to +85C (wide-range specifications), Target pins: SCL1, SCL0, SDA1, SDA0
Item Schmitt trigger input voltage Symbol VT
-
Min. P2VCC x 0.25 --
Typ. --
Max. --
Unit V
Test Conditions*
3
P2VCC = 5.0 V 0.5 V/ 3.3 V 0.3 V P2VCC = 5.0 V 0.5 V/ 3.3 V 0.3 V P2VCC = 5.0 V 0.5 V
VT
+
--
P2VCC x 0.7
VT - VT Input high voltage VIH
+
-
P2VCC x 0.05 P2VCC x 0.7
-- --
-- P2VCC + 0.5 V
P2VCC = 5.0 V 0.5 V/ 3.3 V 0.3 V P2VCC = 5.0 V 0.5 V/ 3.3 V 0.3 V IOL = 8 mA IOL = 3 mA
Input low voltage
VIL
-0.5
--
P2VCC x 0.25 0.5 0.4 20
V
Output low voltage
VOL
-- --
-- -- --
V
Input capacitance
CIN
--
pF
VIN = 0 V, f = 8 MHz, Ta=25C VIN=0.2 to P2VCC-0.2 V
Three-state leakage current (off state)
| lSTI |
--
--
1.0
A
Notes: 1. The regular specifications are supported in the H8S/2506 Group only. 2. If the A/D and D/A converters are not used, do not leave the AVCC, Vref , and AVSS pins open. Apply a voltage 5.0 V 0.5 V/3.3 V 0.3 V to the AVCC and Vref pins by connecting them to VCC, for instance. Set Vref AVCC 3. Test Conditions are for P1VCC = P2VCC = AVCC = VCC.
Rev. 6.00 Sep. 24, 2009 Page 881 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.4
AC Characteristics
Figure 24.2 shows the test conditions for the AC characteristics.
5V C = 30 pF RL = 2.4 k RH = 12 k Input/output timing measurement levels * Low level: 0.8 V * High level: 2.0 V
RL LSI output pin C RH
Figure 24.2 Output Load Circuit 24.4.1 Power-On/Off Timing
Table 24.5 Power-On/Off Timing Condition A: VCC = 3.0 V to 5.5 V, P1VCC = 3.0 V to 5.5 V, P2VCC = 3.0 V to 5.5 V, AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications)
Item Time taken to switch VCC on Symbol tVCCS Min. -1 -1 Typ. 0 Max. -- -- 0.8 20 Unit ms ms V ms/V Figure 24.4 Test Conditions Figure 24.3
VCC hold time when PVCC is tVCCH switched off VCC start voltage VCC rising gradient Note: * VCCSTART SVCC
The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 882 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
VCCmin VCC tVCCS tVCCH
VCCmin
P1VCC P2VCC AVCC
PVCCmin
PVCCmin
VCCmin = 3.0 V PVCCmin = 3.0 V
Figure 24.3 Power-On/Off Timing
VCC P1VCC P2VCC AVCC VSS AVSS VCCSTART
V t SVCC = t / V
Figure 24.4 Power-On Timing
Rev. 6.00 Sep. 24, 2009 Page 883 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.4.2
Clock Timing
Table 24.6 lists the clock timing. Table 24.6 Clock Timing (1) Conditions (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications)
Item Clock cycle time Clock high pulse width Clock low pulse width Clock rise time Clock fall time EXTAL clock input PLL1 frequency multiplication PLL2 multiplication Clock oscillator settling time at reset (crystal) Clock oscillator settling time at reset (external clock) Clock oscillator settling time in software standby (crystal) External clock settling delay time Subclock oscillator settling time Subclock oscillator frequency Subclock (SUB) cycle time Note: * tOSC2 tDEXT tOSC3 fSUB tSUB tOSC1 Symbol tcyc tCH tCL tCr tCf fEX Min. 38 12 12 8 8 20 20 8 8 2 Max. 125 5 5 26 13 32.768 30.5 ms ms ms ms s kHz s Figure 22.3 Figure 24.6 Figure 24.6 Unit ns ns ns ns ns MHz Figure 21.5 Test Conditions Figure 24.5
The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 884 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.6 Clock Timing (2) Conditions (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Item Clock cycle time Clock high pulse width Clock low pulse width Clock rise time Clock fall time EXTAL clock input PLL1 frequency multiplication PLL2 multiplication Clock oscillator settling time at reset (crystal) Clock oscillator settling time at reset (external clock) Clock oscillator settling time in software standby (crystal) External clock settling delay time Subclock oscillator settling time Subclock oscillator frequency Subclock (SUB) cycle time tOSC2 tDEXT tOSC3 fSUB tSUB tOSC1 Symbol tcyc tCH tCL tCr tCf fEX Min. 50 18 18 8 8 20 20 8 8 2 Max. 125 5 5 20 10 32.768 30.5 ms ms ms ms s kHz s Figure 22.3 Figure 24.6 Figure 24.6 Unit ns ns ns ns ns MHz Figure 21.5 Test Conditions Figure 24.5
tcyc tCH tCf
tCL
tCr
Figure 24.5 System Clock Timing
Rev. 6.00 Sep. 24, 2009 Page 885 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
EXTAL tDEXT VCC P1VCC P2VCC STBY tOSC1 RES tOSC1 tDEXT
Figure 24.6 Oscillator Settling Timing 24.4.3 Control Signal Timing
Table 24.7 lists the control signal timing. Table 24.7 Control Signal Timing Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Item RES setup time RES pulse width MRES setup time MRES pulse width Symbol Min. tRESS tRESW tMRESS tMRESW 250 20 250 20 Max. -- -- -- -- Unit ns tcyc ns tcyc Test Conditions Figure 24.7
Rev. 6.00 Sep. 24, 2009 Page 886 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Item NMI setup time NMI hold time NMI pulse width (exiting software standby mode) IRQ setup time IRQ hold time IRQ pulse width (exiting software standby mode) Note: *
Symbol Min. tNMIS tNMIH tNMIW tIRQS tIRQH tIRQW 250 10 200 250 10 200
Max. -- -- -- -- -- --
Unit ns ns ns ns ns ns
Test Conditions Figure 24.8
The regular specifications are supported in the H8S/2506 Group only.
tRESS RES tRESW MRES
tRESS
tMRESS
tMRESS
tMRESW
Figure 24.7 Reset Input Timing
Rev. 6.00 Sep. 24, 2009 Page 887 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
tNMIS
tNMIH
NMI
tNMIW
IRQ
tIRQW tIRQS
tIRQH
IRQ edge input
tIRQS
IRQ level input
Figure 24.8 Interrupt Input Timing
Rev. 6.00 Sep. 24, 2009 Page 888 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.4.4
Bus Timing
Table 24.8 lists the bus timing. Table 24.8 Bus Timing Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Condition A Item Address delay time Address setup time Address hold time CS delay time AS delay time RD delay time 1 RD delay time 2 Read data setup time Read data hold time Read data access time 2 Read data access time 3 Symbol tAD tAS tAH tCSD tASD tRSD1 tRSD2 tRDS tRDH tACC2 tACC3 Min. Max. 30 Condition B Min. Max. 35 Unit ns ns ns ns ns ns ns ns ns Test Conditions Figures 24.9 to 24.12
0.5 x tcyc- 15 0.5 x tcyc- 8 30 10 30 25 25 25
0.5 x tcyc- 15 0.5 x tcyc- 8 30 10 35 25 25 25
1.5 x tcyc- 40 2.0 x tcyc- 40
1.5 x tcyc- ns 40 2.0 x tcyc- ns 50
Rev. 6.00 Sep. 24, 2009 Page 889 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Condition A Item Read data access time 4 Read data access time 5 WR delay time 1 WR delay time 2 WR pulse width 1 WR pulse width 2 Write data delay time Write data setup time Write data hold time WAIT setup time WAIT hold time BREQ setup time BACK delay time Bus floating time Symbol tACC4 tACC5 tWRD1 tWRD2 tWSW1 tWSW2 tWDD tWDS tWDH tWTS tWTH tBRQS tBACD tBZD Min. Max.
Condition B Min. Max. Unit
Test Conditions Figures 24.9 to 24.12
2.5 x tcyc- 40 3.0 x tcyc- 40 18 18
2.5 x tcyc- ns 40 3.0 x tcyc- ns 50 25 25 ns ns ns ns ns ns ns ns ns ns ns ns
1.0 x tcyc- 15 1.5 x tcyc- 15 25
1.0 x tcyc- 20 1.5 x tcyc- 20 40
0.5 x tcyc- 19 0.5 x tcyc- 12 25 10 25 25 38
0.5 x tcyc- 25 0.5 x tcyc- 20 25 10 30 40 50
Figure 24.10
Figure 24.11
Figure 24.13
Note:
*
The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 890 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
T1
T2
tAD A23 to A0 tAS tCSD CS7 to CS0* tAH
tASD AS tRSD1 RD (read)
tASD
tACC2
tRSD2
tAS tACC3 tRDS tRDH
D15 to D0 (read)
tWRD2 HWR, LWR (write)
tWRD2 tAH
tAS tWDD
tWSW1
tWDH
D15 to D0 (write) Note: * CS1 and CS2 are not supported in the H8S/2556 Group.
Figure 24.9 Basic Bus Timing: Two-State Access
Rev. 6.00 Sep. 24, 2009 Page 891 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
T1
T2
T3
tAD A23 to A0 tAS tCSD CS7 to CS0* tAH
tASD AS tRSD1 RD (read)
tASD
tACC4
tRSD2
tAS tACC5 tRDS tRDH
D15 to D0 (read)
tWRD1 HWR, LWR (write) tWDD tWDS D15 to D0 (write) Note: * CS1 and CS2 are not supported in the H8S/2556 Group. tWSW2
tWRD2
tAH tWDH
Figure 24.10 Basic Bus Timing: Three-State Access
Rev. 6.00 Sep. 24, 2009 Page 892 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
T1
T2
Tw
T3
A23 to A0
CS7 to CS0*
AS RD (read) D15 to D0 (read) HWR, LWR (write) D15 to D0 (write) tWTS tWTH WAIT Note: * CS1 and CS2 are not supported in the H8S/2556 Group. tWTS tWTH
Figure 24.11 Basic Bus Timing: Three-State Access, One Wait
Rev. 6.00 Sep. 24, 2009 Page 893 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
T1
T2 or T3
T1
T2
tAD A23 to A0 tAS tAH
CS0
tASD AS
tASD
tRSD2 RD (read) tACC3 D15 to D0 (read) tRDS tRDH
Figure 24.12 Burst ROM Access Timing: Two-State Access
tBRQS BREQ tBACD BACK tBZD tBZD tBACD tBRQS
A23 to A0, CS7 to CS0*, AS, RD, HWR, LWR
Note: * CS1 and CS2 are not supported in the H8S/2556 Group.
Figure 24.13 External Bus-Released Timing
Rev. 6.00 Sep. 24, 2009 Page 894 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.4.5
Timing of On-Chip Peripheral Modules
Table 24.9 lists the timing of on-chip peripheral modules. Table 24.10 lists the I2C2 bus timing. Table 24.9 Timing of On-Chip Peripheral Modules Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*1, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Condition A Item I/O ports 3 * Output data delay time Input data setup time Input data hold time TPU Timer output delay time Timer input setup time Timer clock input setup time Timer clock pulse width TMR Single edge Both edges Symbol Min. tPWD tPRS tPRH tTOCD tTICS tTCKS tTCKWH tTCKWL tTMOD tTMRS tTMCS tTMCWH tTMCWL tBUZD 28 28 28 28 1.5 2.5 28 28 1.5 2.5 Max. 38 38 38 38 Condition B Min. 30 30 30 30 1.5 2.5 30 30 1.5 2.5 Max. 50 50 50 50 ns Figure 24.20 ns ns ns tcyc Figure 24.17 Figure 24.19 Figure 24.18 ns tcyc Figure 24.16 ns Figure 24.15 Unit ns Test Conditions Figure 24.14
Timer output delay time Timer reset input setup time Timer clock input setup time Timer clock pulse width Single edge Both edges
WDT_1
BUZZ output delay time
Rev. 6.00 Sep. 24, 2009 Page 895 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Condition A Item SCI*
3
Condition B Min. 4 6 0.4 50 50 30 30 30 Max. 0.6 1.5 1.5 50 50 ns ns ns ns ns ns ns tScyc tcyc Unit tcyc
Symbol Min. Input clock cycle Asynchronous Synchronous Input clock pulse width Input clock rise time Input clock fall time Transmit data delay time Receive data setup time (synchronous) Receive data hold time (synchronous) tSCKW tSCKr tSCKf tTXD tRXS tRXH tTRGS tHTXD tHRXS tHRXH tScyc 4 6 0.4 38 38 28
Max. 0.6 1.5 1.5 50
Test Conditions Figure 24.21
Figure 24.22
A/D Trigger input setup time converter HCAN*
2
Figure 24.23 Figure 24.24
Transmit data delay time Transmit data setup time Transmit data hold time
Notes: 1. The regular specifications are supported in the H8S/2506 Group only. 2. (For H8S/2556 Group) The HCAN input signal is asynchronous, but checked as if it has been changed at the clock rise (two clock intervals) shown in figure 24.24. The HCAN output signal is asynchronous, but it changes at the clock rise (two clock intervals) shown in figure 24.24. 3. The P35/SCK1/SCK4 and P34 pins are driven high by NMOS. To output high, the pullup resistor should be connected externally.
Rev. 6.00 Sep. 24, 2009 Page 896 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
T1
T2
tPRS Ports 1 to 5, 7, 9, A to G (read)
tPRH
tPWD Ports 1 to 3, 5, 7, A to G (write) T1 T2 T3 T4
tPRS Ports H, J (read)
tPRH
tPWD Ports H, J (write)
Figure 24.14 I/O Port Input/Output Timing
Rev. 6.00 Sep. 24, 2009 Page 897 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
tTOCD Output compare output* tTICS Input capture input* Note: * TIOCA0 to TIOCA5, TIOCB0 to TIOCB5, TIOCC0, TIOCC3, TIOCD0, TIOCD3
Figure 24.15 TPU Input/Output Timing
tTCKS TCLKA to TCLKD tTCKWL tTCKWH
tTCKS
Figure 24.16 TPU Clock Input Timing
tTMOD TMO0 to TMO3
Figure 24.17 8-Bit Timer Output Timing
tTMCS TMCI01, TMCI23 tTMCWL tTMCWH
tTMCS
Figure 24.18 8-Bit Timer Clock Input Timing
Rev. 6.00 Sep. 24, 2009 Page 898 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
tTMRS TMRI01, TMRI23
Figure 24.19 8-Bit Timer Reset Input Timing
tBUZD BUZZ tBUZD
Figure 24.20 WDT_1 Output Timing
tSCKW SCK0 to SCK4 tScyc tSCKr tSCKf
Figure 24.21 SCK Clock Input Timing
SCK0 to SCK4 tTXD TxD0 to TxD4 (transmit data) tRXS RxD0 to RxD4 (receive data) tRXH
Figure 24.22 SCI Input/Output Timing/Synchronous Mode
Rev. 6.00 Sep. 24, 2009 Page 899 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
tTRGS ADTRG
Figure 24.23 External Trigger Input Timing for A/D Converter
VOH VOH
tHTXD HTxD (transmit data) tHRXS HRxD (receive data) tHRXH
Figure 24.24 HCAN Input/Output Timing
Rev. 6.00 Sep. 24, 2009 Page 900 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Table 24.10 I2C Bus Interface 2 Timing Conditions: VCC = P1VCC = P2VCC = 3.0 V to 5.5 V, VSS = 0 V, = 8 MHz to maximum operating frequency, Ta = -20C to +75C
Standard Value Item SCL input cycle time SCL input high pulse width SCL input low pulse width SCL, SDA input fall time SCL, SDA input spike pulse elimination time SDA input bus free time Start condition input hold time Retransmission start condition input setup time Stop condition input setup time Data input setup time Data input hold time SCL, SDA load capacitance SCL, SDA output fall time Symbol Min.
tSCL tSCLH tSCLL tSf tSP
Typ.
Max. 300 1tcyc 400 250
Unit ns ns ns ns ns ns ns ns ns ns ns pF ns
Test Conditions Figure 24.25
12tcyc + 600 3tcyc + 300 5tcyc + 300 5tcyc 3tcyc 3tcyc 3tcyc 1tcyc + 20 0* 0
tBUF tSTAH tSTAS
tSTOS tSDAS tSDAH
Cb
tSf
20 + 0.1 Cb
Note:
*
Configure the system in which the SDA data input hold time (tSDAH) to SCL low (ViL = 0.25 x VCC) should be 0 ns or longer since the SDA is not changed while the SDA clock is high.
Rev. 6.00 Sep. 24, 2009 Page 901 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
VIH SDA0 to SDA1 tBUF tSTAH VIL tSCLH tSP tSTOS
tSTAS
SCL0 to SCL1 P*
S* tsf tSCLL tSCL tSr tSDAH
Sr* tSDAS
P*
Note: * S, P, and Sr indicate the following conditions. S: Start condition P: Stop condition Sr: Retransmission start condition
Figure 24.25 I2C Bus Interface 2 Input/Output Timing
Rev. 6.00 Sep. 24, 2009 Page 902 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.5
A/D Conversion Characteristics
Table 24.11 lists the A/D conversion characteristics. Table 24.11 A/D Conversion Characteristics Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Item Resolution Conversion time Analog input capacitance Min. 10 9.8 -- Typ. 10 -- -- -- -- -- -- -- -- Max. 10 -- 20 5 6.0 4.0 4.0 0.5 8.0 Unit bits s pF k LSB LSB LSB LSB LSB
Permissible signal-source impedance -- Non-linearity error Offset error Full-scale error Quantization error Absolute accuracy Note: * -- -- -- -- --
The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 903 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.6
D/A Conversion Characteristics
Table 24.12 lists the D/A conversion characteristics. Table 24.12 D/A Conversion Characteristics Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*1, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Item Resolution Conversion time Absolute accuracy*2 Min. 8 -- -- -- Typ. 8 -- 2.0 -- Max. 8 10 3.0 2.0 Unit bits s LSB LSB Load capacitance: 20 pF Load resistance: 2 M Load resistance: 4 M Test Conditions
Notes: 1. The regular specifications are supported in the H8S/2506 Group only. 2. Except module stop, software standby, and watch modes.
Rev. 6.00 Sep. 24, 2009 Page 904 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
24.7
Flash Memory Characteristics
Table 24.13 shows the flash memory characteristics. Table 24.13 Flash Memory Characteristics Condition A (for H8S/2552 Group, H8S/2506 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 26 MHz, Ta = -20C to +75C (regular specifications)*5, Ta = -40C to +85C (wide-range specifications) Condition B (for H8S/2556 Group): VCC = P1VCC = P2VCC = 5.0 V 0.5 V (BUFGC1 and BUFGC2 in ICPCR are 0)/ 3.3 V 0.3 V (BUFGC1 and BUFGC2 in ICPCR are 1), AVCC = 3.0 V to 5.5 V, Vref = 3.0 V to AVCC, VSS = AVSS = 0 V, = 32.768 kHz, 8 to 20 MHz, Ta = -40C to +85C (wide-range specifications)
Item Programming time* * * Erase time* *
1 3 1 2 4
Symbo l Min. tp tE
Typ. 3 80 500 1000 7.5 10 7.5 10 15 20
Max. 30 800 5000 22.5 30 22.5 30 45 60
Unit ms/128 bytes ms/4 kbytes ms/32 kbytes
Test Conditions
10000 ms/64 kbytes s/384 kbytes Ta = 25C, all 0 s/512 kbytes s/384 kbytes Ta = 25C s/512 kbytes s/384 kbytes Ta = 25C s/512 kbytes Times Year
Programming time (total) * * * Erase time (total) *1*2*4 Programming/Erase time 124 (total) * * * Count of reprogramming Data hold time*4
1
2
4
IP IE IPE NWEC tDRP
100*3 10
Notes: 1. Programming/Erase time depends on the data. 2. Programming/Erase time does not include the data transfer time. 3. The minimum times that all characteristics after reprogramming are guaranteed. (The range between 1 and a minimum value is guaranteed.) 4. Data hold characteristics are when reprogramming is performed within the range of specifications including a minimum value. 5. The regular specifications are supported in the H8S/2506 Group only.
Rev. 6.00 Sep. 24, 2009 Page 905 of 928 REJ09B0099-0600
Section 24 Electrical Characteristics
Rev. 6.00 Sep. 24, 2009 Page 906 of 928 REJ09B0099-0600
Appendix
Appendix
A. I/O Port States in Each Pin State
Program MCU Port Name Pin Name Port 1 Port 2 Port 3 Port 4 Port 5 P77 to P74 P73/TMO1/CS7 P72/TMO0/CS6 P71/TMRI23/ TMCI23/CS5 P70/TMRI01/ TMCI01/CS4 P97/DA1 P96/DA0 6, 7 T T T Operating Power-On Mode 6, 7 6, 7 6, 7 6, 7 6, 7 6, 7 7 6 Reset T T T T T T T T Manual Reset keep keep keep T keep keep keep keep Hardware Standby Mode T T T T T T T T Software Standby Mode, Watch Mode keep keep keep T keep keep keep [DDR * OPE = 0] T [DDR * OPE = 1] H [DAOEn = 1] keep [DAOEn = 0] T P95 to P90 Port A Address output selection with AEn bit Port selection 6 T keep T [OPE = 1] keep keep keep I/O port 6, 7 7 6 T T T T Keep Keep T T T T keep [OPE = 0] T T keep T Input port I/O port Address output keep Bus Release State keep keep keep T keep keep keep T Execution State, Sleep Mode I/O port I/O port I/O port Input port I/O port I/O port I/O port [DDR = 0] Input port [DDR = 1] CS7 to CS4 Input port
Rev. 6.00 Sep. 24, 2009 Page 907 of 928 REJ09B0099-0600
Appendix
Program MCU Port Name Pin Name Port B Address output selection with AEn bit Port selection Port C 6 T keep T [DDR * OPE = 0] T [DDR * OPE = 1] keep 7 Port D 6 7 Port E 8-bit bus 6 16-bit bus 7 PF7/ 6 T Clock output*3 keep [DDR = 0] Input port [DDR = 1] Clock output 7 T keep T [DDR = 0] Input port [DDR = 1] H [DDR = 0] Input port [DDR = 1] Clock output [DDR = 0] Input port [DDR = 1] Clock output T T keep [DDR = 0] Input port [DDR = 1] H keep [DDR = 0] Input port [DDR = 1] Clock output I/O port [DDR = 0] Input port [DDR = 1] Clock output 6 T T T T T keep T keep keep T T T T T T keep T keep keep T keep T keep keep T T [DDR = 0] Input port [DDR = 1] Address output I/O port Data bus I/O port I/O port Data bus 6 T keep T [OPE = 1] keep keep keep I/O port Operating Power-On Mode 7 6 Reset T T Manual Reset keep Keep Hardware Standby Mode T T Software Standby Mode, Watch Mode keep [OPE = 0] T Bus Release State keep T Execution State, Sleep Mode I/O port Address output
Rev. 6.00 Sep. 24, 2009 Page 908 of 928 REJ09B0099-0600
Appendix
Program MCU Port Name Pin Name PF6/AS PF5/RD PF4/ HWR Operating Power-On Mode 6 Reset H*3 Manual Reset H Hardware Standby Mode T Software Standby Mode, Watch Mode [OPE = 0] T [OPE = 1] H 7 PF3/LWR/ ADTRG/IRQ3 8-bit bus 6 16-bit bus 6 T keep H T T keep [OPE = 0] T [OPE = 1] H PF2/WAIT 6 T keep T [WAITE = 0] keep [WAITE = 1] T 7 PF1/BACK/BUZZ 6 T T keep keep T T keep [BRLE = 0] keep [BRLE = 1] H 7 PF0/BREQ/IRQ2 6 T T keep keep T T keep [BRLE = 0] keep [BRLE = 1] T 7 T keep T keep keep keep T [WAITE = 0] keep [WAITE = 1] T keep L [WAITE = 0] I/O port [WAITE = 1] WAIT I/O port [BRLE = 0] I/O port [BRLE = 1] BACK I/O port [BRLE = 0] I/O port [BRLE = 1] BREQ I/O port keep T I/O port LWR 7 T T keep keep T T keep keep keep keep I/O port I/O port Bus Release State T Execution State, Sleep Mode AS, RD, HWR
Rev. 6.00 Sep. 24, 2009 Page 909 of 928 REJ09B0099-0600
Appendix
Program MCU Port Name Pin Name PG4/CS0 Operating Power-On Mode 6 Reset T Manual Reset keep Hardware Standby Mode T Software Standby Mode, Watch Mode [DDR * OPE = 0] T [DDR * OPE = 1] H Bus Release State T Execution State, Sleep Mode [DDR = 0] Input port [DDR = 1] CS0 (H in sleep mode) 7 PG3/RX/CS1*1 PG2/TX/CS2*1 PG1/CS3/IRQ7 6 T T keep keep T T keep [DDR * OPE = 0] T [DDR * OPE = 1] H 7 PG0/IRQ6 Port H Port J THxD*2 HRxD*2 6, 7 6, 7 6, 7 6, 7 6, 7 T T T T H*3 Input keep keep keep keep H Input T T T T T T keep keep keep keep H T keep keep keep keep keep Input keep T I/O port [DDR = 0] Input port [DDR = 1] CS1 to CS3 I/O port I/O port I/O port I/O port THxD Output HRxD Input
Legend: H: High level L: Low level T: High-impedance Keep: Input port becomes high-impedance, output port retains state DDR: Data direction register OPE: Output port enable WAITE: Wait input enable BRLE: Bus release enable Notes: 1. PG3 and PG2 are not supported in the H8S/2556 Group. PG3/RX/CS1 and PG2/TX/CS2 are supported in the H8S/2552 Group. (When IEE bit is 1, RX and TX are valid.) PG3/CS1 and PG2/CS2 are supported in the H8S/2506 Group. 2. Supported only in the H8S/2556 Group. 3. Output pins are in the high-impedance state when the power is supplied.
Rev. 6.00 Sep. 24, 2009 Page 910 of 928 REJ09B0099-0600
Appendix
B.
Product Codes
Part No. HD64F2556 HD64F2552 Mark Code HD64F2556FC20 HD64F2552FC26 HD64F2552BR26 Package (Package Code) 144-pin QFP (FP-144J, FP-144JV) 144-pin QFP (FP-144J, FP-144JV) 176-pin LFBGA (BP-176V) 144-pin QFP (FP-144J, FP-144JV) 176-pin LFBGA (BP-176V) 144-pin QFP (FP-144J, FP-144JV) 176-pin LFBGA (BP-176V) 144-pin QFP (FP-144J, FP-144JV) 176-pin LFBGA (BP-176V)
Product Type H8S/2556 H8S/2552 Flash memory version Flash memory version
H8S/2551
Flash memory version
HD64F2551
HD64F2551FC26 HD64F2551BR26
H8S/2506
Flash memory version
HD64F2506
HD64F2506FC26 HD64F2506BR26
H8S/2505
Flash memory version
HD64F2505
HD64F2505FC26 HD64F2505BR26
Rev. 6.00 Sep. 24, 2009 Page 911 of 928 REJ09B0099-0600
Appendix
C.
Package Dimensions
RENESAS Code PRQP0144KB-A Previous Code FP-144J/FP-144JV MASS[Typ.] 2.4g
JEITA Package Code P-QFP144-20x20-0.50
HD
*1
D
108 109
73 72 bp b1
NOTE) 1. DIMENSIONS"*1"AND"*2" DO NOT INCLUDE MOLD FLASH 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
c1
*2
HE
E
c
Terminal cross section
144 1 ZD 36 37
Reference Symbol
Dimension in Millimeters
F
A1
L L1
Detail F
e y
*3
bp
x
M
D E A2 HD HE A A1 bp b1 c c1 e x y ZD ZE L L1
Nom Max 20 20 2.70 21.8 22.0 22.2 21.8 22.0 22.2 3.05 0.00 0.10 0.25 0.17 0.22 0.27 0.20 0.12 0.17 0.22 0.15 8 0 0.5 0.10 0.10 1.25 1.25 0.4 0.5 0.6 1.0
Min
ZE
A
A2
Figure C.1 FP-144J and FP-144JV Package Dimensions
Rev. 6.00 Sep. 24, 2009 Page 912 of 928 REJ09B0099-0600
c
Appendix
JEITA Package Code P-LFBGA176-13x13-0.80 RENESAS Code PLBG0176GA-A Previous Code BP-176/BP-176V MASS[Typ.] 0.45g
wSA
D
wSB
x4
v
y1 S S
A
yS
e A
ZD
e
R P N M L K J H G F E D C B A
A1
E
Reference Symbol
Dimension in Millimeters Min Nom 13.0 13.0 0.15 0.20 1.40 0.35 0.40 0.80 0.45 0.50 0.55 0.08 0.10 0.2 0.45 Max
B
D E v w A
ZE
A1 e b
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
x y y1 SD SE ZD ZE 0.90 0.90
b
xM S A B
Figure C.2 BP-176V Package Dimensions
Rev. 6.00 Sep. 24, 2009 Page 913 of 928 REJ09B0099-0600
Appendix
Rev. 6.00 Sep. 24, 2009 Page 914 of 928 REJ09B0099-0600
Main Revisions for This Edition
Item 9.1.4 * Pin Functions Page 201 Revision (See Manual for Details) Table amended
TPU Channel 2 Setting* P17DDR Pin function
1
P17/TIOCB2/TCLKD
Output 0 TIOCB2 output
Input or Initial Value 1 P17 input TCLKD input*3 P17 output TIOCB2 input*2
9.13.4 *
Pin Functions
254
Table amended
Operating mode WAITE PF2DDR Pin function 0 PF2 input 0 1 PF2 output Mode 6 1 WAIT input 0 PF2 input Mode 7 1 PF2 output
PF2/WAIT
12.3.1 Timer Counter (TCNT)
380
Description added TCNT is initialized to H'00 when the TME bit in TCSR is cleared to 0. To initialize TCNT to H'00 during timer operation, write a value of H'00 directly to TCNT. For details, see 12.6.7, Initialization of TCNT by the TME Bit.
12.6.7 Initialization of TCNT by the TME Bit 13.3.7 Serial Status Register (SSR) * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
393 410
Newly added Table amended and note added
Bit 7 Bit Name TDRE Initial Value 1 R/W Description
1 R/(W)* Transmit Data Register Empty
Displays whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1*
2 When the DTC* is activated by a TXI interrupt request and writes data to TDR 3
[Clearing conditions] * * 6 RDRF 0
R/(W)*1 Receive Data Register Full Indicates that the received data is stored in RDR. [Setting condition] * When serial reception ends normally and receive data is transferred from RSR to RDR When 0 is written to RDRF after reading RDRF = 1*
3
[Clearing conditions] * *
2 When the DTC* is activated by an RXI interrupt and transfers data from RDR
The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
Rev. 6.00 Sep. 24, 2009 Page 915 of 928 REJ09B0099-0600
Item 13.3.7 Serial Status Register (SSR) * Normal Serial Communication Interface Mode (When SMIF in SCMR Is 0)
Page 411
Revision (See Manual for Details)
Bit 5 Bit Name ORER Initial Value 0 R/W Description
R/(W)*1 Overrun Error Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] * When the next serial reception is completed while RDRF = 1
The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial reception cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued either. [Clearing condition] * When 0 is written to ORER after reading ORER = 1*3 The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0. 4 FER 0 R/(W)* Framing Error Indicates that a framing error occurred during reception in asynchronous mode, causing abnormal termination. [Setting condition] * When the stop bit is 0 In 2 stop bit mode, only the first stop bit is checked for a value to 1; the second stop bit is not checked. If a framing error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the FER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to FER after reading FER = 1*3 In 2-stop-bit mode, only the first stop bit is checked. The FER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
1
412
Bit 3
Bit Name PER
Initial Value 0
R/W
1
Description
R/(W)* Parity Error Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] * When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to PER after reading PER = 1*
3
The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
Notes: 3. To clear the flag by using the CPU, write 0 to the flag and then read it once again.
Rev. 6.00 Sep. 24, 2009 Page 916 of 928 REJ09B0099-0600
Item 13.3.7 Serial Status Register (SSR) * Smart Card Interface Mode (When SMIF in SCMR Is 1)
Page 413
Revision (See Manual for Details) Table amended and note added
Bit 7 Bit Name TDRE Initial Value 1 R/W Description
1 R/(W)* Transmit Data Register Empty
Indicates whether TDR contains transmit data. [Setting conditions] * * When the TE bit in SCR is 0 When data is transferred from TDR to TSR and data can be written to TDR When 0 is written to TDRE after reading TDRE = 1* When the DTC* is activated by a TXI interrupt request and writes data to TDR
2 3
[Clearing conditions] * * 6 RDRF 0
1
R/(W)* Receive Data Register Full Indicates that the received data is stored in RDR. [Setting condition] * When serial reception ends normally and receive data is transferred from RSR to RDR When 0 is written to RDRF after reading RDRF = 1*
3
[Clearing conditions] * *
2 When the DTC* is activated by an RXI interrupt and transfers data from RDR
The RDRF flag is not affected and retains their previous values when the RE bit in SCR is cleared to 0. If reception of the next data is completed while the RDRF flag is still set to 1, an overrun error will occur and the receive data will be lost.
414
Bit 5
Bit Name ORER
Initial Value 0
R/W
Description
R/(W)*1 Overrun Error Indicates that an overrun error occurred during reception, causing abnormal termination. [Setting condition] * When the next serial reception is completed while RDRF = 1
The receive data prior to the overrun error is retained in RDR, and the data received subsequently is lost. Also, subsequent serial cannot be continued while the ORER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to ORER after reading ORER = 1*3 The ORER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0. 4 ERS 0 R/(W)* Error Signal Status Indicates that the status of an error, signal 1 returned from the reception side at reception [Setting condition] * * When the low level of the error signal is sampled When 0 is written to ERS after reading ERS = 1*3 [Clearing condition] The ERS flag is not affected and retains its previous state when the TE bit in SCR is cleared to 0.
1
Rev. 6.00 Sep. 24, 2009 Page 917 of 928 REJ09B0099-0600
Item 13.3.7 Serial Status Register (SSR) * Smart Card Interface Mode (When SMIF in SCMR Is 1)
Page 415
Revision (See Manual for Details)
Bit 3 Bit Name PER Initial Value 0 R/W Description
R/(W)*1 Parity Error Indicates that a parity error occurred during reception using parity addition in asynchronous mode, causing abnormal termination. [Setting condition] * When a parity error is detected during reception If a parity error occurs, the receive data is transferred to RDR but the RDRF flag is not set. Also, subsequent serial reception cannot be continued while the PER flag is set to 1. In clocked synchronous mode, serial transmission cannot be continued, either. [Clearing condition] * When 0 is written to PER after reading PER = 1*
3
The PER flag is not affected and retains its previous state when the RE bit in SCR is cleared to 0.
416
Notes: 3. To clear the flag by using the CPU, write 0 to the flag and then read it once again.
20.1.2 Operating Mode Table 20.1 MD Pin Setting and Operating Mode
669
Table amended and note added
Pin RES MD0*3 MD1 MD2 Reset state 0 0/1 0/1 0/1 On-chip ROM 1 valid mode* 1 0/1 1 1 User program 2 mode* 1 0/1 1 1 User boot mode Boot 1 1 0 0 mode 1 0/1 1 0 Programmer mode 1 0 0 0
Notes: 3. In case of On-chip ROM valid mode, User program mode and Boot mode, when the MD0 pin sets to 0, the mode will be Expanded mode, otherwise, when the pin sets to 1, the mode will be Single chip mode. However, in case of User boot mode, there is no Expanded mode. 20.4.3 User Boot Mode 716 Description amended The area that can be executed in the steps of the user procedure program (on-chip RAM and user MAT ) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data. 717 Description amended The area that can be executed in the steps of the user procedure program (on-chip RAM and user MAT ) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data.
Rev. 6.00 Sep. 24, 2009 Page 918 of 928 REJ09B0099-0600
Item 20.4.4 Procedure Program and Storable Area for Programming Data Table 20.9 (1) Useable Area for Programming in User Program Mode Table 20.9 (2) Useable Area for Erasure in User Program Mode
Page 719
Revision (See Manual for Details) Table amended
Storable /Executable Area Selected MAT Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area x x
Item Execution of Writing SCO = 1 to FCCS (Download)
721
Table amended
Storable /Executable Area Selected MAT Embedded On-Chip Target Flash External Space Program RAM Memory (Expanded Mode) User MAT Storage Area x x
Item Execution of Writing SCO = 1 to FCCS (Download)
Table 20.9 (3) Useable Area for Programming in User Boot Mode
722
Table amended
Storable/Executable Area On-Chip RAM User Boot MAT x*
1
Selected MAT User Boot MAT Embedded Program Storage Area
Item Storage Area for Program Data Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter
User MAT
x
Rev. 6.00 Sep. 24, 2009 Page 919 of 928 REJ09B0099-0600
Item 20.4.4 Procedure Program and Storable Area for Programming Data Table 20.9 (3) Useable Area for Programming in User Boot Mode
Page 723
Revision (See Manual for Details) Table amended
Storable/Executable Area On-Chip RAM User Boot MAT x Selected MAT User Boot MAT Embedded Program Storage Area
Item Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine Operation for Interrupt Inhibit Switching MATs by FMATS Operation for Writing H'5A to FKEY Operation for Settings of Program Parameter Execution of Programming Determination of Program Result Operation for Program Error Operation for FKEY Clear Switching MATs by FMATS
User MAT
x
x x x x x x*2 x x
Rev. 6.00 Sep. 24, 2009 Page 920 of 928 REJ09B0099-0600
Item Table 20.9 (4) Useable Area for Erasure in User Boot Mode
Page 724
Revision (See Manual for Details) Table amended
Storable/Executable Area User Boot MAT Selected MAT User Boot MAT Embedded Program Storage Area
Item Operation for Selection of On-chip Program to be Downloaded Operation for Writing H'A5 to FKEY Execution of Writing SCO = 1 to FCCS (Download) Operation for FKEY Clear Determination of Download Result Operation for Download Error Operation for Settings of Initial Parameter Execution of Initialization Determination of Initialization Result Operation for Initialization Error NMI Handling Routine Operation for Interrupt Inhibit Switching MATs by FMATS Operation for Writing H'5A to FKEY
On-ChipRAM
User MAT
x
x
x
x x
725
Table amended
Storable/Executable Area Item Operation for Settings of Erasure Parameter Execution of Erasure Determination of Erasure Result Operation for Erasure Error Operation for FKEY Clear Switching MATs by FMATS On-Chip RAM User Boot MAT x User MAT Selected MAT User Boot MAT Embedded Program Storage Area
x x x* x x
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Item
Page
Revision (See Manual for Details) Figure replaced
C. Package Dimensions 912 Figure C.1 FP-144J and FP-144JV Package Dimensions Figure C.2 BP-176V Package Dimensions 913
Figure replaced
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Index
Numerics
11 consecutive recessive bits .................. 637 16-Bit count mode .................................. 369 16-Bit timer pulse unit (TPU)................. 267 8-Bit timers (TMR)................................. 353 A A/D converter ......................................... 513 A/D converter activation......................... 334 Absolute address....................................... 54 Acknowledge .......................................... 493 Activated by software ............................. 186 Address map ............................................. 72 Address space ........................................... 32 Addressing modes..................................... 52 ADI ......................................................... 527 Analog input channel.............................. 516 Arbitration field ...................................... 649 Arithmetic operations instructions............ 44 Asynchronous mode ............................... 425 B Bcc............................................................ 49 Bit Manipulation instructions ................... 47 Bit rate ............................................ 418, 640 Bit synchronous circuit ........................... 510 Block data transfer instructions ................ 51 Block transfer mode................................ 183 Boot mode .............................................. 699 Branch instructions ................................... 49 Break....................................................... 467 Break address.................................. 115, 118 Break condition....................................... 117 Buffer operation...................................... 315 Buffer segment ....................................... 640 Bus arbitration ........................................ 165 Bus cycle ................................................ 144 C CAN bus interface................................... 656 Cascaded connection............................... 369 Cascaded operation ................................. 318 Chain transfer.......................................... 185 Clock pulse generator ............................. 775 Clock synchronous serial format............. 501 Clocked synchronous mode .................... 444 CMIA ...................................................... 370 CMIB ...................................................... 370 Communications protocol ....................... 743 Compare-match count mode ................... 369 Condition field .......................................... 51 Condition-code register............................. 36 Configuration mode ................................ 637 Control field............................................ 645 Controller area network (HCAN)............ 609 Conversion time ...................................... 524 D D/A converter ......................................... 533 Data direction register (DDR)................. 193 Data field................................................. 645 Data frame............................................... 649 Data register (DR)................................... 193 Data transfer controller ........................... 167 Data transfer instructions .......................... 43 Download pass/fail result parameter....... 686 DTC interface ......................................... 655 DTC vector table..................................... 176 E Effective address................................. 52, 56 Effective address extension....................... 51 Emulation................................................ 729 ERI.......................................................... 465 Error protection....................................... 727
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ERS0/OVR0 ........................................... 654 Exception handling ................................... 75 Exception vector table .............................. 75 Extended control register.......................... 35 External trigger....................................... 526 F Flash erase block select parameter ......... 694 Flash MAT configuration ....................... 671 Flash multipurpose address area parameter ................................................................ 690 Flash multipurpose data destination parameter ................................................ 691 Flash pass/fail parameter ........................ 694 Flash programming/erasing frequency parameter ................................................ 687 Framing error.......................................... 432 Free-running count operation ................. 308 G General register ........................................ 38 H Hardware protection ............................... 726 Hardware reset........................................ 637 Hardware standby mode ......................... 804 HCAN halt mode .................................... 653 HCAN sleep mode.................................. 651 I I2C bus format......................................... 492 I2C bus interface 2 (IIC2)........................ 475 Immediate ................................................. 54 Input capture function............................. 311 Input pull-up MOS function ................... 193 Instruction set ........................................... 40 Internal bus master ................................. 123 Interrupt control modes .......................... 100 Interrupt controller.................................... 85 Interrupt exception handling..................... 80
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Interrupt exception handling vector table .......................................................... 95 Interrupt mask bit...................................... 36 Interval timer mode................................. 387 L Logic Operations instructions ................... 46 M Mailbox................................................... 634 Mark state ............................................... 467 Medium-speed mode............................... 799 Memory cycle ......................................... 139 Memory indirect ....................................... 55 Message control (MC0 to MC15) ........... 634 Message data (MD0 to MD15) ............... 636 Message reception................................... 647 Message transmission ............................. 643 Message transmission cancellation ......... 645 Message transmission method ................ 642 Mode comparison ................................... 670 Module stop mode .................................. 805 Multiprocessor communication function ................................................................ 436 N NMI .......................................................... 94 Noise canceler......................................... 503 Normal mode .................................. 181, 190 O Off-board programming mode ................ 665 On-board programming .......................... 699 On-board programming mode................. 665 Open-drain control register (ODR) ......... 193 Operating mode selection ......................... 67 Operation field .......................................... 51 Overflow ................................................. 388 Overrun error .......................................... 432 OVI ......................................................... 370
P Parity error.............................................. 432 PC break controller ................................. 115 Periodic count operation ......................... 308 Phase counting mode .............................. 325 Port register (PORT)............................... 193 Power-down modes ................................ 791 Procedure program ................................. 718 Program counter ....................................... 35 Program-counter relative .......................... 55 Programmer mode .................................. 734 Programming/erasing interface register.. 677 Protection................................................ 726 Pulse output ............................................ 364 PWM modes ........................................... 320 R Register direct........................................... 53 Register field............................................. 51 Register indirect........................................ 53 Register indirect with displacement.......... 53 Register indirect with post-increment....... 53 Register indirect with pre-decrement........ 54 Register information ............................... 176 Registers ABACK ...................... 621, 814, 834, 854 ABWCR ..................... 126, 827, 847, 866 ADCR ......................... 520, 830, 851, 869 ADCSR....................... 517, 830, 851, 869 ADDR......................... 516, 830, 851, 869 ASTCR ....................... 126, 827, 847, 866 BARA ......................... 116, 824, 844, 864 BARB ......................... 117, 824, 844, 864 BCR ............................ 615, 814, 834, 854 BCRA ......................... 117, 824, 844, 864 BCRB ......................... 118, 824, 844, 864 BCRH ......................... 130, 827, 847, 867 BCRL.......................... 131, 827, 847, 867 BRR ............................ 418, 829, 850, 868 CRA............................ 172, 812, 832, 853
CRB ............................ 172, 812, 832, 853 DACR ......................... 535, 823, 843, 863 DADR ......................... 534, 823, 843, 863 DAR............................ 172, 812, 832, 853 DTCER ............................... 172, 825, 864 DTVECR .................... 173, 825, 845, 864 FCCS........................... 677, 830, 851, 869 FECS........................... 680, 831, 851, 869 FKEY .......................... 681, 831, 851, 869 FMATS ....................... 682, 831, 851, 869 FPCS ........................... 680, 831, 851, 869 FTDAR ....................... 682, 831, 851, 869 FVACR ....................... 697, 831, 851, 870 FVADR....................... 698, 831, 851, 870 GSR............................. 613, 814, 834, 854 ICCR1 ......................... 479, 813, 833, 854 ICCR2 ......................... 482, 813, 833, 854 ICDRR ........................ 491, 813, 833, 854 ICDRS................................................. 491 ICDRT ........................ 491, 813, 833, 854 ICIER .......................... 486, 813, 833, 854 ICMR .......................... 483, 813, 833, 854 ICPCR......................... 264, 824, 844, 864 ICSR............................ 488, 813, 833, 854 IER................................ 90, 825, 845, 864 IMR............................. 628, 814, 834, 855 IPR ................................ 89, 827, 847, 866 IRR.............................. 624, 814, 834, 855 ISCR.............................. 91, 824, 845, 864 ISR ................................ 93, 825, 845, 864 LAFM ......................... 631, 814, 835, 855 LPWRCR .................... 777, 824, 844, 864 MBCR......................... 617, 814, 834, 854 MBIMR....................... 628, 814, 834, 855 MC .............................. 634, 814, 835, 855 MCR............................ 612, 814, 834, 854 MD .............................. 636, 819, 839, 859 MDCR........................... 68, 824, 844, 864 MRA ........................... 170, 812, 832, 853 MRB............................ 171, 812, 832, 853
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MSTPCR .....................797, 824, 844, 864 P1DDR ........................199, 825, 845, 865 P1DR ...........................200, 827, 848, 867 P2DDR ........................205, 825, 845, 865 P2DR ...........................206, 827, 848, 867 P3DDR ........................210, 825, 845, 865 P3DR ...........................211, 827, 848, 867 P3ODR ........................212, 826, 845, 865 P5DDR ........................217, 825, 845, 865 P5DR ...........................217, 827, 848, 867 P7DDR ........................219, 825, 845, 865 P7DR ...........................220, 827, 848, 867 PADDR .......................226, 825, 845, 865 PADR ..........................227, 827, 848, 867 PAODR .......................228, 826, 846, 865 PAPCR ........................228, 825, 845, 865 PBDDR........................233, 825, 845, 865 PBDR...........................233, 828, 848, 867 PBPCR.........................234, 825, 845, 865 PCDDR........................239, 825, 845, 865 PCDR...........................240, 828, 848, 867 PCPCR.........................241, 825, 845, 865 PDDDR .......................243, 825, 845, 865 PDDR ..........................244, 828, 848, 867 PDPCR ........................245, 825, 845, 865 PEDDR........................247, 825, 845, 865 PEDR...........................248, 828, 848, 867 PEPCR.........................249, 825, 845, 865 PFCR ...........................132, 824, 844, 864 PFDDR ........................251, 825, 845, 865 PFDR ...........................252, 828, 848, 867 PGDDR .......................255, 825, 845, 865 PGDR ..........................256, 828, 848, 867 PHDDR .......................259, 813, 833, 854 PHDR ..........................259, 813, 833, 854 PJDDR.........................261, 813, 833, 854 PJDR............................262, 813, 833, 854 PORT1.........................200, 831, 851, 870 PORT2.........................206, 831, 851, 870 PORT3.........................211, 831, 851, 870
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PORT4 ........................ 216, 831, 851, 870 PORT5 ........................ 218, 831, 851, 870 PORT7 ........................ 220, 831, 851, 870 PORT9 ........................ 224, 831, 851, 870 PORTA ....................... 227, 831, 851, 870 PORTB ....................... 234, 831, 852, 870 PORTC ....................... 240, 831, 852, 870 PORTD ....................... 244, 831, 852, 870 PORTE........................ 248, 831, 852, 870 PORTF........................ 252, 831, 852, 870 PORTG ....................... 256, 831, 852, 870 PORTH ....................... 260, 813, 833, 854 PORTJ......................... 262, 813, 833, 854 RAMER ...................... 696, 827, 847, 867 RDR ............................ 399, 829, 850, 868 REC............................. 630, 814, 834, 855 RFPR........................... 623, 814, 834, 854 RSR..................................................... 399 RSTCSR ..................... 385, 829, 850, 868 RXPR.......................... 622, 814, 834, 854 SAR............................ 172, 490, 812, 813, ................................... 832, 833, 853, 854 SBYCR ....................... 796, 824, 844, 864 SCKCR ....................... 776, 824, 844, 864 SCMR ......................... 417, 829, 850, 868 SCR............................. 405, 829, 850, 868 SMR............................ 400, 829, 850, 868 SSR ............................. 410, 829, 850, 868 SYSCR.......................... 68, 824, 844, 864 TCNT................. 305, 356, 380, 828, 829, ............................ 848, 849, 850, 867, 868 TCORA....................... 356, 829, 849, 868 TCORB ....................... 357, 829, 849, 868 TCR............................ 276, 357, 828, 829, .................................... 848, 849, 867, 868 TCSR .................. 359, 829, 849, 850, 868 TDR ............................ 400, 829, 850, 868 TEC............................. 630, 814, 834, 855 TGR ............................ 305, 828, 848, 867 TIER ........................... 300, 828, 848, 867
TIOR........................... 282, 828, 848, 867 TMDR......................... 281, 828, 848, 867 TSR............................. 302, 828, 848, 867 TSTR .......................... 305, 827, 847, 866 TSYR.......................... 306, 827, 847, 866 TXACK ...................... 620, 814, 834, 854 TXCR ......................... 619, 814, 834, 854 TXPR.......................... 618, 814, 834, 854 UMSR......................... 630, 814, 834, 855 WCRH ........................ 127, 827, 847, 867 WCRL......................... 127, 827, 847, 867 Remote frame ......................................... 650 Remote transmission request bit ............. 650 Repeat mode ........................................... 182 Reset ......................................................... 77 Reset exception handling.......................... 78 RM0........................................................ 654 RM1........................................................ 654 RXI ......................................................... 465 S Scan mode .............................................. 523 Serial communication interface (SCI) .... 395 Serial communication interface specification............................................ 741 Shift instructions....................................... 46 Single mode ............................................ 522 Slave address .......................................... 493 SLE0 ....................................................... 654 Sleep mode ............................................. 800 Smart card............................................... 395 Smart card interface................................ 453 Software activation ......................... 186, 190 Software protection................................. 727 Software reset ......................................... 637 Software standby mode........................... 801 Stack pointer (SP)..................................... 34 Stack status ............................................... 82 Start condition......................................... 493 Stop condition......................................... 493
SWDTEND............................................. 186 Synchronous operation............................ 313 System control instructions....................... 50 T TCI0V ..................................................... 333 TCI1U ..................................................... 333 TCI1V ..................................................... 333 TCI2U ..................................................... 333 TCI2V ..................................................... 333 TCI3V ..................................................... 333 TCI4U ..................................................... 333 TCI4V ..................................................... 333 TCI5U ..................................................... 333 TCI5V ..................................................... 333 TCNT incrementation timing.................. 365 TEI .......................................................... 465 TGI0A..................................................... 333 TGI0B ..................................................... 333 TGI0C ..................................................... 333 TGI0D..................................................... 333 TGI1A..................................................... 333 TGI1B ..................................................... 333 TGI2A..................................................... 333 TGI2B ..................................................... 333 TGI3A..................................................... 333 TGI3B ..................................................... 333 TGI3C ..................................................... 333 TGI3D..................................................... 333 TGI4A..................................................... 333 TGI4B ..................................................... 333 TGI5A..................................................... 333 TGI5B ..................................................... 333 Time quanta (TQ) ................................... 641 Toggle output.................................. 310, 373 Trace exception handling .......................... 79 Transfer rate............................................ 481 Transition to watch mode........................ 806 Trap instruction......................................... 80 TXI.......................................................... 465
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U Unread message overwrite...................... 650 User boot MAT....................................... 732 User boot memory MAT ........................ 665 User boot mode....................................... 714 User MAT............................................... 732 User memory MAT ................................ 665 User program mode ................................ 703
V Vector number for the software activation interrupt................................................... 173 W Watchdog timer (WDT).......................... 377 Watchdog timer mode............................. 386 Waveform output by compare match...... 310 WOVI ..................................................... 389
Rev. 6.00 Sep. 24, 2009 Page 928 of 928 REJ09B0099-0600
Renesas 16-Bit Single-Chip Microcomputer Hardware Manual H8S/2556 Group, H8S/2552 Group, H8S/2506 Group
Publication Date: 1st Edition, March, 2003 Rev.6.00, September 24, 2009 Published by: Sales Strategic Planning Div. Renesas Technology Corp. Edited by: Customer Support Department Global Strategic Communication Div. Renesas Solutions Corp.
(c) 2009. Renesas Technology Corp., All rights reserved. Printed in Japan.
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H8S/2556 Group, H8S/2552 Group, H8S/2506 Group Hardware Manual
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REJ09B0099-0600

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