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preliminary 05.98 preliminary microcomputer components 16-bit cmos single-chip microcontroller c161ri h t t p : / / w w w . s i e m e n s . d e / s e m i c o n d u c t o r /
c161ri revision history: 1998-05-01 preliminary previous releases: 1998-01 advance information 1997-12 advance information page subjects 7 xtal pin numbers (mqfp) corrected. 34 v ddmin corrected, special threshold parameters added ( v ils , v ihs , hys). 35, 37 specification of i ido improved. 41 adctc value in converter timing example timing corrected. we listen to your comments any information within this document that you feel is wrong, unclear or missing at all? your feedback will help us to continuously improve the quality of this document. please send your proposal (including a reference to this document) to: mcdocu.comments@siemens-scg.com edition 1998-05-01 published by siemens ag, bereich halbleiter, marketing- kommunikation, balanstra?e 73, 81541 mnchen ? siemens ag 1998. all rights reserved. attention please! as far as patents or other rights of third parties are concerned, liability is only assumed for components, not for application s, processes and circuits implemented within components or assemblies. the information describes the type of component and shall not be considered as assured characteristics. terms of delivery and rights to change design reserved. for questions on technology, delivery and prices please contact the semiconductor group offices in germany or the siemens compa nies and representatives worldwide (see address list). due to technical requirements components may contain dangerous substances. for information on the types in question please cont act your nearest siemens office, semiconductor group. siemens ag is an approved cecc manufacturer. packing please use the recycling operators known to you. we can also help you C get in touch with your nearest sales office. by agreeme nt we will take packing material back, if it is sorted. you must bear the costs of transport. for packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for an y costs in- curred. components used in life-support devices or systems must be expressly authorized for such purpose! critical components 1 of the semiconductor group of siemens ag, may only be used in life-support devices or systems 2 with the express written approval of the semiconductor group of siemens ag. 1 a critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that device or system. 2 life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sust ain hu- man life. if they fail, it is reasonable to assume that the health of the user may be endangered.
semiconductor group 3 1998-05-01 l high performance 16-bit cpu with 4-stage pipeline l 125 ns instruction cycle time at 16 mhz cpu clock l 625 ns multiplication (16 16 bits), 1.25 m s division (32 / 16 bit) l enhanced boolean bit manipulation facilities l additional instructions to support hll and operating systems l register-based design with multiple variable register banks l single-cycle context switching support l clock generation via prescaler or via direct clock input l up to 8 mbytes linear address space for code and data l 1 kbyte on-chip internal ram (iram) l 2 kbytes on-chip extension ram (xram) l programmable external bus characteristics for different address ranges l 8-bit or 16-bit external data bus l multiplexed or demultiplexed external address/data bus l 5 programmable chip-select signals l 1024 bytes on-chip special function register area l 8-channel interrupt-driven single-cycle data transfer facilities via peripheral event controller (pec) l 16-priority-level interrupt system, 11 external interrupts l 4-channel 8-bit a/d converter, conversion time down to 7.625 m s l 2 multi-functional general purpose timer units with five 16-bit timers l synchronous/asynchronous serial channel (usart) l high-speed synchronous serial channel l i 2 c bus interface (10-bit addressing, 400 khz) with 2 channels (multiplexed) l up to 76 general purpose i/o lines l programmable watchdog timer l on-chip real time clock l idle and power down modes with flexible power management l ambient temperature range C 40 to 85 c l supported by a large range of development tools like c-compilers, macro-assembler packages, emulators, evaluation boards, hll-debuggers, simulators, logic analyzer disassemblers, programming boards l on-chip bootstraploader l 100-pin mqfp / tqfp package this document describes the sab-c161ri-lm , the sab-c161ri-lf , the saf-c161ri-lm and the sab-c161ri-lf . for simplicity all versions are referred to by the term c161ri throughout this document. c166-family of high-performance cmos 16-bit microcontrollers preliminary c161ri 16-bit microcontroller c161ri
semiconductor group 4 1998-05-01 c161ri introduction the c161ri is a new derivative of the siemens c166 family of 16-bit single-chip cmos microcontrollers. it combines high cpu performance (up to 8 million instructions per second) with high peripheral functionality and enhanced io-capabilities. the c161ri derivative is especially suited for cost sensitive applications. figure 1 logic symbol ordering information the ordering code for siemens microcontrollers provides an exact reference to the required product. this ordering code identifies: l the derivative itself, i.e. its function set l the specified temperature range l the package l the type of delivery. for the available ordering codes for the c161ri please refer to the product information microcontrollers , which summarizes all available microcontroller variants. note: the ordering codes for the mask-rom versions are defined for each product after verification of the respective rom code. c161ri xtal2 xtal1 rstin nmi ea rstout ale rd wr /wrl v dd v ss port0 16 bit port1 16 bit port 2 8 bit port 3 15 bit port 4 7 bit port 6 8 bit port 5 6 bit v aref v agnd
semiconductor group 5 1998-05-01 c161ri pin configuration mqfp package (top view) figure 2 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 c161ri 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 37 38 39 40 41 42 43 44 45 46 47 48 49 50 nmi rstout rstin v dd v ss p1h.7/a15 p1h.6/a14 p1h.5/a13 p1h.4/a12 p1h.3/a11 p1h.2/a10 p1h.1/a9 p1h.0/a8 v dd v ss p1l.7/a7 p1l.6/a6 p1l.5/a5 p1l.4/a4 p1l.3/a3 p1l.2/a2 p1l.1/a1 p1l.0/a0 p0h.7/ad15 p0h.6/ad14 p0h.5/ad13 p0h.4/ad12 p0h.3/ad11 p0h.2/ad10 p0h.1/ad9 p5.2/an2 p5.3/an3 p5.14/t4eud p5.15/t2eud v ss xtal1 xtal2 v dd p3.0/scl0 p3.1/sda0 p3.2/capin p3.3/t3out p3.4/t3eud p3.5/t4in p3.6/t3in p3.7/t2in p3.8/mrst p3.9/mtsr p3.10/txd0 p3.11/rxd0 p3.12/bhe /wrh p3.13/sclk p3.15/clkout v ss v dd p4.0/a16 p4.1/a17 p4.2/a18 p4.3/a19 p4.4/a20 p5.1/an1 p5.0/an0 v agnd v aref p2.15/ex7in p2.14/ex6in p2.13/ex5in p2.12/ex4in p2.11/ex3in p2.10/ex2in p2.9/ex1in p2.8/ex0in p6.7/sda2 p6.6/scl1 p6.5/sda1 p6.4/cs4 p6.3/cs3 p6.2/cs2 p6.1/cs1 p6.0/cs0 p4.5/a21 p4.6/a22 rd wr /wrl ready ale ea v ss v dd p0l.0/ad0 p0l.1/ad1 p0l.2/ad2 p0l.3/ad3 p0l.4/ad4 p0l.5/ad5 p0l.6/ad6 p0l.7/ad7 v ss v dd p0h.0/ad8
semiconductor group 6 1998-05-01 c161ri pin configuration tqfp package (top view) figure 3 p5.3/an3 p5.2/an2 p5.1/an1 p5.0/an0 v agnd v aref p2.15/ex7in p2.14/ex6in p2.13/ex5in p2.12/ex4in p2.11/ex3in p2.10/ex2in p2.9/ex1in p2.8/ex0in p6.7/sda2 p6.6/scl1 p6.5/sda1 p6.4/cs4 p6.3/cs3 p6.2/cs2 p6.1/cs1 p6.0/cs0 nmi rstout rstin 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 c161ri 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 37 38 39 40 41 42 43 44 45 46 47 48 49 50 v dd v ss p1h.7/a15 p1h.6/a14 p1h.5/a13 p1h.4/a12 p1h.3/a11 p1h.2/a10 p1h.1/a9 p1h.0/a8 v dd v ss p1l.7/a7 p1l.6/a6 p1l.5/a5 p1l.4/a4 p1l.3/a3 p1l.2/a2 p1l.1/a1 p1l.0/a0 p0h.7/ad15 p0h.6/ad14 p0h.5/ad13 p0h.4/ad12 p0h.3/ad11 p5.14/t4eud p5.15/t2eud v ss xtal1 xtal2 v dd p3.0/scl0 p3.1/sda0 p3.2/capin p3.3/t3out p3.4/t3eud p3.5/t4in p3.6/t3in p3.7/t2in p3.8/mrst p3.9/mtsr p3.10/txd0 p3.11/rxd0 p3.12/bhe /wrh p3.13/sclk p3.15/clkout v ss v dd p4.0/a16 p4.1/a17 p4.2/a18 p4.3/a19 p4.4/a20 p4.5/a21 p4.6/a22 rd wr /wrl ready ale ea v ss v dd p0l.0/ad0 p0l.1/ad1 p0l.2/ad2 p0l.3/ad3 p0l.4/ad4 p0l.5/ad5 p0l.6/ad6 p0l.7/ad7 v ss v dd p0h.0/ad8 p0h.1/ad9 p0h.2/ad10
semiconductor group 7 1998-05-01 c161ri pin definitions and functions symbol pin no. tqfp pin no. mqfp input outp function p5.0 C p5.3, p5.14 C p5.15 97 C 100, 1 C 2 99 C 2, 3 C 4 i i i i port 5 is a 6-bit input-only port with schmitt-trigger characteristics. the pins of port 5 also serve as the (up to 4) analog input channels for the a/d converter, where p5.x equals anx (analog input channel x, x=0...3). the following pins of port 5 also serve as timer inputs: p5.14 t4eud gpt1 timer t4 ext.up/down ctrl.input p5.15 t2eud gpt1 timer t5 ext.up/down ctrl.input xtal1 xtal2 4 5 6 7 i o xtal1: input to the oscillator amplifier and input to the internal clock generator xtal2: output of the oscillator amplifier circuit. to clock the device from an external source, drive xtal1, while leaving xtal2 unconnected. minimum and maximum high/low and rise/fall times specified in the ac characteristics must be observed. p3.0 C p3.13, p3.15 7 C 20, 21 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 9 C 22, 23 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 i/o i/o i/o i/o i/o i o i i i i i/o i/o o i/o o o i/o o port 3 is a 15-bit bidirectional i/o port. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high- impedance state. the following port 3 pins also serve for alternate functions: p3.0 scl0 i 2 c bus clock line 0 p3.1 sda0 i 2 c bus data line 0 p3.2 capin gpt2 register caprel capture input p3.3 t3out gpt1 timer t3 toggle latch output p3.4 t3eud gpt1 timer t3 ext.up/dwn ctrl.input p3.5 t4in gpt1 timer t4 input for count/gate/reload/capture p3.6 t3in gpt1 timer t3 count/gate input p3.7 t2in gpt1 timer t2 input for count/gate/reload/capture p3.8 mrst ssc master-rec./slave-transmit i/o p3.9 mtsr ssc master-transmit/slave-rec. o/i p3.10 t d0 asc0 clock/data output (asyn./syn.) p3.11 r d0 asc0 data input (asyn.) or i/o (syn.) p3.12 bhe ext. memory high byte enable signal, wrh ext. memory high byte write strobe p3.13 sclk ssc master clock outp./slave cl. inp. p3.15 clkout system clock output (=cpu clock) note : pins p3.0 and p3.1 are open drain outputs only.
semiconductor group 8 1998-05-01 c161ri p4.0 C p4.6 24 C 30 24 ... 30 26 - 32 26 ... 32 i/o i/o o ... o port 4 is a 7-bit bidirectional i/o port. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high- impedance state. in case of an external bus configuration, port 4 can be used to output the segment address lines: p4.0 a16 least significant segment addr. line ... ... ... p4.6 a22 most significant segment addr. line rd 31 33 o external memory read strobe. rd is activated for every external instruction or data read access. wr /wrl 32 34 o external memory write strobe. in wr -mode this pin is activated for every external data write access. in wrl -mode this pin is activated for low byte data write accesses on a 16- bit bus, and for every data write access on an 8-bit bus. see wrcfg in register syscon for mode selection. ready 33 35 i ready input. when the ready function is enabled, a high level at this pin during an external memory access will force the insertion of memory cycle time waitstates until the pin returns to a low level. ale 34 36 o address latch enable output. can be used for latching the address into external memory or an address latch in the multiplexed bus modes. ea 35 37 i external access enable pin. a low level at this pin during and after reset forces the c161ri to begin instruction execution out of external memory. a high level forces execution out of the internal rom. the c161ri must have this pin tied to 0. note: this pin is expected to be used to accept the programming voltage for otp versions of the c161ri. pin definitions and functions (contd) symbol pin no. tqfp pin no. mqfp input outp function
semiconductor group 9 1998-05-01 c161ri port0: p0l.0 C p0l.7, p0h.0 - p0h.7 38 C 45, 48 C 55 40 C 47, 50 C 57 i/o port0 consists of the two 8-bit bidirectional i/o ports p0l and p0h. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high-impedance state. in case of external bus configurations, port0 serves as the address (a) and address/data (ad) bus in multiplexed bus modes and as the data (d) bus in demultiplexed bus modes. demultiplexed bus modes: data path width: 8-bit 16-bit p0l.0 C p0l.7: d0 C d7 d0 - d7 p0h.0 C p0h.7: i/o d8 - d15 multiplexed bus modes: data path width: 8-bit 16-bit p0l.0 C p0l.7: ad0 C ad7 ad0 - ad7 p0h.0 C p0h.7: a8 - a15 ad8 - ad15 port1: p1l.0 C p1l.7, p1h.0 - p1h.7 56 C 63, 66 C 73 58 - 65, 68 - 75 i/o port1 consists of the two 8-bit bidirectional i/o ports p1l and p1h. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high-impedance state. port1 is used as the 16- bit address bus (a) in demultiplexed bus modes and also after switching from a demultiplexed bus mode to a multiplexed bus mode. rstin 76 78 i reset input with schmitt-trigger characteristics. a low level at this pin for a specified duration while the oscillator is running resets the c161ri. an internal pullup resistor permits power-on reset using only a capacitor connected to v ss . in bidirectional reset mode (enabled by setting bit bdrsten in register syscon) the rstin line is internally pulled low for the duration of the internal reset sequence upon a software reset, a wdt reset and a hardware reset. 1) rstout 77 79 o internal reset indication output. this pin is set to a low level when the part is executing either a hardware-, a software- or a watchdog timer reset. rstout remains low until the einit (end of initialization) instruction is executed. nmi 78 80 i non-maskable interrupt input. a high to low transition at this pin causes the cpu to vector to the nmi trap routine. when the pwrdn (power down) instruction is executed, the nmi pin must be low in order to force the c161ri to go into power down mode. if nmi is high, when pwrdn is executed, the part will continue to run in normal mode. if not used, pin nmi should be pulled high externally. pin definitions and functions (contd) symbol pin no. tqfp pin no. mqfp input outp function
semiconductor group 10 1998-05-01 c161ri 1) the following behavior differences must be observed when the bidirectional reset is active: l bit bdrsten in register syscon cannot be changed after einit. l after a reset bit bdrsten is cleared. l the reset indication flags always indicate a long hardware reset. l the port0 configuration is treated like on a hardware reset. especially the bootstrap loader may be activated when p0l.4 is low. l pin rstin may only be connected to external reset devices with an open drain output driver. l a short hardware reset is extended to the duration of the internal reset sequence. p6.0 C p6.7 79 C 86 79 ... 83 84 85 86 81 C 88 81 ... 85 86 87 88 i/o i/o o ... o i/o i/o i/o port 6 is an 8-bit bidirectional i/o port. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high- impedance state. the port 6 pins also serve for alternate functions: p6.0 cs0 chip select 0 output ... ... ... p6.4 cs4 chip select 4 output p6.5 sda1 i 2 c bus data line 1 p6.6 scl1 i 2 c bus clock line 1 p6.7 sda2 i 2 c bus data line 2 note : pins p6.5-p6.7 are open drain outputs only. p2.8 C p2.15 87 C 94 87 ... 94 89 C 96 89 ... 96 i/o i/o i ... i port 2 is an 8-bit bidirectional i/o port. it is bit-wise programmable for input or output via direction bits. for a pin configured as input, the output driver is put into high- impedance state. the following port 2 pins also serve for alternate functions: p2.8 ex0in fast external interrupt 0 input ... ... ... p2.15 ex7in fast external interrupt 7 input v aref 95 97 - reference voltage for the a/d converter. v agnd 96 98 - reference ground for the a/d converter. v dd 6, 23, 37, 47, 65, 75 8, 25, 39, 49, 67, 77 - digital supply voltage: + 5 v during normal operation and idle mode. 3 2.5 v during power down mode v ss 3, 22, 36, 46, 64, 74 5, 24, 38, 48, 66, 76 - digital ground. pin definitions and functions (contd) symbol pin no. tqfp pin no. mqfp input outp function
semiconductor group 11 1998-05-01 c161ri functional description the c161ri is a low cost downgrade of the high performance microcontroller c167cr with otp or internal rom, reduced peripheral functionality and a high performance capture compare unit with an additional functionality. the architecture of the c161ri combines advantages of both risc and cisc processors and of advanced peripheral subsystems in a very well-balanced way. the following block diagram gives an overview of the different on-chip components and of the advanced, high bandwidth internal bus structure of the c161ri. note : all time specifications refer to a cpu clock of 16 mhz (see definition in the ac characteristics section). figure 4 block diagram qr lqwhuqdo 520 ,qvwu'dwd 3(& &38&ruh ,qwhuuxsw%xv ,qwhuqdo 5$0 .%\wh ' x d o 3 r u w 3ruw 3ruw 3ruw 3ruw 'dwd 'dwd :dwfkgrj 3ruw &5,9 &38 &&ruh ; % 8 6 e l w 1 2 1 0 8 ; ' d w d $ g g u h v v h v ([whuqdo,qvwu'dwd 86$57 $6& 6\qf &kdqqho 63, 66& ;7$/ %5* %5* 3hulskhudo'dwd *37 7 7 7 ;5$0 .%\wh *37 7 7 ,e&%xv ,qwhuidfh ,qwhuuxsw&rqwuroohu h[w,5 26& lqsxw0+] suhvfdohu rugluhfwgulyh ([whuqdo %xv 08; rqo\ ;%86 &rqwuro &6/rjlf &6 3 r u w 3 r u w &kdqqho elw $'& 57&
semiconductor group 12 1998-05-01 c161ri memory organization the memory space of the c161ri is configured in a von neumann architecture which means that code memory, data memory, registers and i/o ports are organized within the same linear address space which includes 16 mbytes. the entire memory space can be accessed bytewise or wordwise. particular portions of the on-chip memory have additionally been made directly bitaddressable. 1 kbyte of on-chip internal ram is provided as a storage for user defined variables, for the system stack, general purpose register banks and even for code. a register bank can consist of up to 16 wordwide (r0 to r15) and/or bytewide (rl0, rh0, , rl7, rh7) so-called general purpose registers (gprs). 1024 bytes (2 512 bytes) of the address space are reserved for the special function register areas (sfr space and esfr space). sfrs are wordwide registers which are used for controlling and monitoring functions of the different on-chip units. unused sfr addresses are reserved for future members of the c166 family. in order to meet the needs of designs where more memory is required than is provided on chip, up to 8 mbytes of external ram and/or rom can be connected to the microcontroller.
semiconductor group 13 1998-05-01 c161ri external bus controller all of the external memory accesses are performed by a particular on-chip external bus controller (ebc). it can be programmed either to single chip mode when no external memory is required, or to one of four different external memory access modes, which are as follows: C 16-/18-/20-/23-bit addresses, 16-bit data, demultiplexed C 16-/18-/20-/23-bit addresses, 16-bit data, multiplexed C 16-/18-/20-/23-bit addresses, 8-bit data, multiplexed C 16-/18-/20-/23-bit addresses, 8-bit data, demultiplexed in the demultiplexed bus modes, addresses are output on port1 and data is input/output on port0 or p0l, respectively. in the multiplexed bus modes both addresses and data use port0 for input/output. important timing characteristics of the external bus interface (memory cycle time, memory tri-state time, length of ale and read write delay) have been made programmable to allow the user the adaption of a wide range of different types of memories and external peripherals. in addition, up to 4 independent address windows may be defined (via register pairs addrselx / busconx) which allow to access different resources with different bus characteristics. these address windows are arranged hierarchically where buscon4 overrides buscon3 and buscon2 overrides buscon1. all accesses to locations not covered by these 4 address windows are controlled by buscon0. up to 5 external cs signals (4 windows plus default) can be generated in order to save external glue logic. access to very slow memories is supported via a particular ready function. for applications which require less than 8 mbytes of external memory space, this address space can be restricted to 1 mbyte, 256 kbyte or to 64 kbyte. in this case port 4 outputs four, two or no address lines at all. it outputs all 7 address lines, if an address space of 8 mbytes is used.
semiconductor group 14 1998-05-01 c161ri central processing unit (cpu) the main core of the cpu consists of a 4-stage instruction pipeline, a 16-bit arithmetic and logic unit (alu) and dedicated sfrs. additional hardware has been spent for a separate multiply and divide unit, a bit-mask generator and a barrel shifter. based on these hardware provisions, most of the c161ris instructions can be executed in just one machine cycle which requires 125 ns at 16 mhz cpu clock. for example, shift and rotate instructions are always processed during one machine cycle independent of the number of bits to be shifted. all multiple-cycle instructions have been optimized so that they can be executed very fast as well: branches in 2 cycles, a 16 16 bit multiplication in 5 cycles and a 32-/16 bit division in 10 cycles. another pipeline optimization, the so-called jump cache, allows reducing the execution time of repeatedly performed jumps in a loop from 2 cycles to 1 cycle. figure 5 cpu block diagram mcb02147 cpu sp stkov stkun instr. reg. instr. ptr. exec. unit 4-stage pipeline mdh mdl psw syscon context ptr. mul/div-hw r15 r0 general purpose registers bit-mask gen barrel - shifter alu (16-bit) data page ptr. code seg. ptr. internal ram r15 r0 rom 16 16 32 buscon 0 buscon 1 buscon 2 buscon 3 buscon 4 addrsel 4 addrsel 3 addrsel 2 addrsel 1
semiconductor group 15 1998-05-01 c161ri the cpu disposes of an actual register context consisting of up to 16 wordwide gprs which are physically allocated within the on-chip ram area. a context pointer (cp) register determines the base address of the active register bank to be accessed by the cpu at a time. the number of register banks is only restricted by the available internal ram space. for easy parameter passing, a register bank may overlap others. a system stack of up to 1024 bytes is provided as a storage for temporary data. the system stack is allocated in the on-chip ram area, and it is accessed by the cpu via the stack pointer (sp) register. two separate sfrs, stkov and stkun, are implicitly compared against the stack pointer value upon each stack access for the detection of a stack overflow or underflow. the high performance offered by the hardware implementation of the cpu can efficiently be utilized by a programmer via the highly efficient c161ri instruction set which includes the following instruction classes: C arithmetic instructions C logical instructions C boolean bit manipulation instructions C compare and loop control instructions C shift and rotate instructions C prioritize instruction C data movement instructions C system stack instructions C jump and call instructions C return instructions C system control instructions C miscellaneous instructions the basic instruction length is either 2 or 4 bytes. possible operand types are bits, bytes and words. a variety of direct, indirect or immediate addressing modes are provided to specify the required operands.
semiconductor group 16 1998-05-01 c161ri interrupt system with an interrupt response time within a range from just 315 ns to 750 ns (in case of internal program execution), the c161ri is capable of reacting very fast to the occurrence of non- deterministic events. the architecture of the c161ri supports several mechanisms for fast and flexible response to service requests that can be generated from various sources internal or external to the microcontroller. any of these interrupt requests can be programmed to being serviced by the interrupt controller or by the peripheral event controller (pec). in contrast to a standard interrupt service where the current program execution is suspended and a branch to the interrupt vector table is performed, just one cycle is stolen from the current cpu activity to perform a pec service. a pec service implies a single byte or word data transfer between any two memory locations with an additional increment of either the pec source or the destination pointer. an individual pec transfer counter is implicity decremented for each pec service except when performing in the continuous transfer mode. when this counter reaches zero, a standard interrupt is performed to the corresponding source related vector location. pec services are very well suited, for example, for supporting the transmission or reception of blocks of data. the c161ri has 8 pec channels each of which offers such fast interrupt-driven data transfer capabilities. a separate control register which contains an interrupt request flag, an interrupt enable flag and an interrupt priority bitfield exists for each of the possible interrupt sources. via its related register, each source can be programmed to one of sixteen interrupt priority levels. once having been accepted by the cpu, an interrupt service can only be interrupted by a higher prioritized service request. for the standard interrupt processing, each of the possible interrupt sources has a dedicated vector location. fast external interrupt inputs are provided to service external interrupts with high precision requirements. these fast interrupt inputs feature programmable edge detection (rising edge, falling edge or both edges). software interrupts are supported by means of the trap instruction in combination with an individual trap (interrupt) number.
semiconductor group 17 1998-05-01 c161ri the following table shows all of the possible c161ri interrupt sources and the corresponding hardware-related interrupt flags, vectors, vector locations and trap (interrupt) numbers: source of interrupt or pec service request request flag enable flag interrupt vector vector location trap number external interrupt 0 cc8ir cc8ie cc8int 000060 h 18 h external interrupt 1 cc9ir cc9ie cc9int 000064 h 19 h external interrupt 2 cc10ir cc10ie cc10int 000068 h 1a h external interrupt 3 cc11ir cc11ie cc11int 00006c h 1b h external interrupt 4 cc12ir cc12ie cc12int 000070 h 1c h external interrupt 5 cc13ir cc13ie cc13int 000074 h 1d h external interrupt 6 cc14ir cc14ie cc14int 000078 h 1e h external interrupt 7 cc15ir cc15ie cc15int 00007c h 1f h gpt1 timer 2 t2ir t2ie t2int 000088 h 22 h gpt1 timer 3 t3ir t3ie t3int 00008c h 23 h gpt1 timer 4 t4ir t4ie t4int 000090 h 24 h gpt2 timer 5 t5ir t5ie t5int 000094 h 25 h gpt2 timer 6 t6ir t6ie t6int 000098 h 26 h gpt2 caprel register crir crie crint 00009c h 27 h a/d conversion complete adcir adcie adcint 0000a0 h 28 h a/d overrun error adeir adeie adeint 0000a4 h 29 h asc0 transmit s0tir s0tie s0tint 0000a8 h 2a h asc0 transmit buffer s0tbir s0tbie s0tbint 00011c h 47 h asc0 receive s0rir s0rie s0rint 0000ac h 2b h asc0 error s0eir s0eie s0eint 0000b0 h 2c h ssc transmit sctir sctie sctint 0000b4 h 2d h ssc receive scrir scrie scrint 0000b8 h 2e h ssc error sceir sceie sceint 0000bc h 2f h i 2 c data transfer event xp0ir xp0ie xp0int 000100 h 40 h i 2 c protocol event xp1ir xp1ie xp1int 000104 h 41 h x-peripheral node 2 xp2ir xp2ie xp2int 000108 h 42 h pll unlock / rtc xp3ir xp3ie xp3int 00010c h 43 h
semiconductor group 18 1998-05-01 c161ri the c161ri also provides an excellent mechanism to identify and to process exceptions or error conditions that arise during run-time, so-called hardware traps. hardware traps cause immediate non-maskable system reaction which is similar to a standard interrupt service (branching to a dedicated vector table location). the occurence of a hardware trap is additionally signified by an individual bit in the trap flag register (tfr). except when another higher prioritized trap service is in progress, a hardware trap will interrupt any actual program execution. in turn, hardware trap services can normally not be interrupted by standard or pec interrupts. the following table shows all of the possible exceptions or error conditions that can arise during run- time: exception condition trap flag trap vector vector location trap number trap priority reset functions: hardware reset software reset watchdog timer overflow reset reset reset 000000 h 000000 h 000000 h 00 h 00 h 00 h iii iii iii class a hardware traps: non-maskable interrupt stack overflow stack underflow nmi stkof stkuf nmitrap stotrap stutrap 000008 h 000010 h 000018 h 02 h 04 h 06 h ii ii ii class b hardware traps: undefined opcode protected instruction fault illegal word operand access illegal instruction access illegal external bus access undopc prtflt illopa illina illbus btrap btrap btrap btrap btrap 000028 h 000028 h 000028 h 000028 h 000028 h 0a h 0a h 0a h 0a h 0a h i i i i i reserved [2c h C 3c h ][0b h C 0f h ] software traps trap instruction any [000000 h C 0001fc h ] in steps of 4 h any [00 h C 7f h ] current cpu priority
semiconductor group 19 1998-05-01 c161ri general purpose timer (gpt) unit the gpt unit represents a very flexible multifunctional timer/counter structure which may be used for many different time related tasks such as event timing and counting, pulse width and duty cycle measurements, pulse generation, or pulse multiplication. the gpt unit incorporates five 16-bit timers which are organized in two separate modules, gpt1 and gpt2. each timer in each module may operate independently in a number of different modes, or may be concatenated with another timer of the same module. each of the three timers t2, t3, t4 of module gpt1 can be configured individually for one of four basic modes of operation, which are timer, gated timer, counter, and incremental interface mode. in timer mode, the input clock for a timer is derived from the cpu clock, divided by a programmable prescaler, while counter mode allows a timer to be clocked in reference to external events. pulse width or duty cycle measurement is supported in gated timer mode, where the operation of a timer is controlled by the gate level on an external input pin. for these purposes, each timer has one associated port pin (txin) which serves as gate or clock input. the maximum resolution of the timers in module gpt1 is 500 ns (@ 16 mhz cpu clock). the count direction (up/down) for each timer is programmable by software or may additionally be altered dynamically by an external signal on a port pin (txeud) to facilitate e.g. position tracking. in incremental interface mode the gpt1 timers (t2, t3, t4) can be directly connected to the incremental position sensor signals a and b via their respective inputs txin and txeud. direction and count signals are internally derived from these two input signals, so the contents of the respective timer tx corresponds to the sensor position. the third position sensor signal top0 can be connected to an interrupt input. timer t3 has an output toggle latch (t3otl) which changes its state on each timer over-flow/ underflow. the state of this latch may be output on a port pin (t3out) e.g. for time out monitoring of external hardware components, or may be used internally to clock timers t2 and t4 for measuring long time periods with high resolution. in addition to their basic operating modes, timers t2 and t4 may be configured as reload or capture registers for timer t3. when used as capture or reload registers, timers t2 and t4 are stopped. the contents of timer t3 are captured into t2 or t4 in response to a signal at their associated input pins (txin). timer t3 is reloaded with the contents of t2 or t4 triggered either by an external signal or by a selectable state transition of its toggle latch t3otl. when both t2 and t4 are configured to alternately reload t3 on opposite state transitions of t3otl with the low and high times of a pwm signal, this signal can be constantly generated without software intervention. with its maximum resolution of 250 ns (@ 16 mhz), the gpt2 module provides precise event control and time measurement. it includes two timers (t5, t6) and a capture/reload register (caprel). both timers can be clocked with an input clock which is derived from the cpu clock via a programmable prescaler. the count direction (up/down) for each timer is programmable by software. concatenation of the timers is supported via the output toggle latch (t6otl) of timer t6, which changes its state on each timer overflow/underflow. the state of this latch may be used to clock timer t5. the overflows/underflows of timer t6 can additionally be used to cause a reload from the caprel register. the caprel register may capture the contents of timer t5 based on an external signal transition on the corresponding port pin
semiconductor group 20 1998-05-01 c161ri (capin), and timer t5 may optionally be cleared after the capture procedure. this allows absolute time differences to be measured or pulse multiplication to be performed without software overhead. the capture trigger (timer t5 to caprel) may also be generated upon transitions of gpt1 timer t3s inputs t3in and/or t3eud. this is especially advantageous when t3 operates in incremental interface mode. figure 6 block diagram of gpt1 mcb02141 gpt1 timer t2 mode control interrupt request t2in t2 2 n n = 3...10 cpu clock reload capture t2eud t3 mode control cpu clock n = 3...10 n 2 t3in gpt1 timer t3 t3otl request interrupt t4 control mode reload capture cpu clock n = 3...10 n 2 t4in request interrupt gpt1 timer t4 t4eud t3eud toggle ff u/d u/d u/d
semiconductor group 21 1998-05-01 c161ri figure 7 block diagram of gpt2 watchdog timer the watchdog timer represents one of the fail-safe mechanisms which have been implemented to prevent the controller from malfunctioning for longer periods of time. the watchdog timer is always enabled after a reset of the chip, and can only be disabled in the time interval until the einit (end of initialization) instruction has been executed. thus, the chips start-up procedure is always monitored. the software has to be designed to service the watchdog timer before it overflows. if, due to hardware or software related failures, the software fails to do so, the watchdog timer overflows and generates an internal hardware reset and pulls the rstout pin low in order to allow external hardware components to be reset. the watchdog timer is a 16-bit timer, clocked with the system clock divided either by 2 or by 128. the high byte of the watchdog timer register can be set to a prespecified reload value (stored in wdtrel) in order to allow further variation of the monitored time interval. each time it is serviced by the application software, the high byte of the watchdog timer is reloaded. thus, time intervals between 31 m s and 525 ms can be monitored (@ 16 mhz). the default watchdog timer interval after reset is 8.2 ms (@ 16 mhz). gpt2 timer t5 2 n n=2...9 t5 mode control gpt2 timer t6 t6 mode control gpt2 caprel t6otl interrupt request cpu interrupt request 2 n n=2...9 cpu clock clock interrupt request capin clear capture
semiconductor group 22 1998-05-01 c161ri real time clock the real time clock (rtc) module of the c161ri consists of a chain of 3 divider blocks, a fixed 8-bit divider, the reloadable 16-bit timer t14 and the 32-bit rtc timer (accessible via registers rtch and rtcl). the rtc module is directly clocked with the on-chip oscillator frequency divided by 32 via a separate clock driver and is therefore independent from the selected clock generation mode of the c161ri. all timers count up. the rtc module can be used for different purposes: l system clock to determine the current time and date l cyclic time based interrupt l 48-bit timer for long term measurements figure 7-1 rtc block diagram note: the registers associated with the rtc are not effected by a reset in order to maintain the correct system time even when intermediate resets are executed. rtcl rtcl t14 t14rel 8:1 f rtc reload interrupt request
semiconductor group 23 1998-05-01 c161ri a/d converter for analog signal measurement, an 8-bit a/d converter with 4 multiplexed input channels and a sample and hold circuit has been integrated on-chip. it uses the method of successive approximation. the sample time (for loading the capacitors) and the conversion time is programmable and can so be adjusted to the external circuitry. overrun error detection is provided for the conversion result register (addat): an interrupt request will be generated when the result of a previous conversion has not been read from the result register at the time the next conversion is complete. for applications which require less than 4 analog input channels, the remaining channel inputs can be used as digital input port pins. the a/d converter of the c161ri supports two different conversion modes. in the standard single channel conversion mode, the analog level on a specified channel is sampled once and converted to a digital result. in the single channel continuous mode, the analog level on a specified channel is repeatedly sampled and converted without software intervention. the 8-bit result can be left-aligned or right-aligned within a 10-bit result area. the peripheral event controller (pec) may be used to automatically store the conversion results into a table in memory for later evaluation, without requiring the overhead of entering and exiting interrupt routines for each data transfer. i 2 c module the integrated i 2 c bus module handles the transmission and reception of frames over the two-line i 2 c bus in accordance with the i 2 c bus specification. the on-chip i 2 c module can receive and transmit data using 7-bit or 10-bit addressing and it can operate in slave mode, in master mode or in multi-master mode. several physical interfaces (port pins) can be established under software control. data can be transferred at speeds up to 400 kbit/sec. two interrupt nodes dedicated to the i 2 c module allow efficient interrupt service and also support operation via pec transfers. note: the port pins associated with the i 2 c interfaces feature open drain drivers only, as required by the i 2 c specification.
semiconductor group 24 1998-05-01 c161ri serial channels serial communication with other microcontrollers, processors, terminals or external peripheral components is provided by two serial interfaces with different functionality, an asynchronous/ synchronous serial channel ( asc0 ) and a high-speed synchronous serial channel ( ssc ). the asc0 is upward compatible with the serial ports of the siemens 8-bit microcontroller families and supports full-duplex asynchronous communication at up to 500 kbaud and half-duplex synchronous communication at up to 2 mbaud @ 16 mhz cpu clock. a dedicated baud rate generator allows to set up all standard baud rates without oscillator tuning. for transmission, reception and error handling 4 separate interrupt vectors are provided. in asynchronous mode, 8- or 9-bit data frames are transmitted or received, preceded by a start bit and terminated by one or two stop bits. for multiprocessor communication, a mechanism to distinguish address from data bytes has been included (8-bit data plus wake up bit mode). in synchronous mode, the asc0 transmits or receives bytes (8 bits) synchronously to a shift clock which is generated by the asc0. the asc0 always shifts the lsb first. a loop back option is available for testing purposes. a number of optional hardware error detection capabilities has been included to increase the reliability of data transfers. a parity bit can automatically be generated on transmission or be checked on reception. framing error detection allows to recognize data frames with missing stop bits. an overrun error will be generated, if the last character received has not been read out of the receive buffer register at the time the reception of a new character is complete. the ssc supports full-duplex synchronous communication at up to 4 mbaud @ 16 mhz cpu clock. it may be configured so it interfaces with serially linked peripheral components. a dedicated baud rate generator allows to set up all standard baud rates without oscillator tuning. for transmission, reception and error handling 3 separate interrupt vectors are provided. the ssc transmits or receives characters of 216 bits length synchronously to a shift clock which can be generated by the ssc (master mode) or by an external master (slave mode). the ssc can start shifting with the lsb or with the msb and allows the selection of shifting and latching clock edges as well as the clock polarity. a number of optional hardware error detection capabilities has been included to increase the reliability of data transfers. transmit and receive error supervise the correct handling of the data buffer. phase and baudrate error detect incorrect serial data.
semiconductor group 25 1998-05-01 c161ri parallel ports the c161ri provides up to 76 io lines which are organized into six input/output ports and one input port. all port lines are bit-addressable, and all input/output lines are individually (bit-wise) programmable as inputs or outputs via direction registers. the i/o ports are true bidirectional ports which are switched to high impedance state when configured as inputs. the output drivers of three io ports can be configured (pin by pin) for push/pull operation or open-drain operation via control registers. the other io ports operate in push/pull mode, except for the i 2 c interface pins which are open drain pins only. during the internal reset, all port pins are configured as inputs. all port lines have programmable alternate input or output functions associated with them. port0 and port1 may be used as address and data lines when accessing external memory, while port 4 outputs the additional segment address bits a22/19/17...a16 in systems where segmentation is enabled to access more than 64 kbytes of memory. port 3 includes alternate functions of timers, serial interfaces, the optional bus control signal bhe and the system clock output (clkout). port 5 is used for the analog input channels to the a/d converter or timer control signals. port 6 provides the optional chip select signals and interface lines for the i 2 c module. all port lines that are not used for these alternate functions may be used as general purpose io lines.
semiconductor group 26 1998-05-01 c161ri instruction set summary the table below lists the instructions of the c161ri in a condensed way. the various addressing modes that can be used with a specific instruction, the operation of the instructions, parameters for conditional execution of instructions, and the opcodes for each instruction can be found in the c166 family instruction set manual . this document also provides a detailed description of each instruction. instruction set summary mnemonic description bytes add(b) add word (byte) operands 2 / 4 addc(b) add word (byte) operands with carry 2 / 4 sub(b) subtract word (byte) operands 2 / 4 subc(b) subtract word (byte) operands with carry 2 / 4 mul(u) (un)signed multiply direct gpr by direct gpr (16-16-bit) 2 div(u) (un)signed divide register mdl by direct gpr (16-/16-bit) 2 divl(u) (un)signed long divide reg. md by direct gpr (32-/16-bit) 2 cpl(b) complement direct word (byte) gpr 2 neg(b) negate direct word (byte) gpr 2 and(b) bitwise and, (word/byte operands) 2 / 4 or(b) bitwise or, (word/byte operands) 2 / 4 xor(b) bitwise xor, (word/byte operands) 2 / 4 bclr clear direct bit 2 bset set direct bit 2 bmov(n) move (negated) direct bit to direct bit 4 band, bor, bxor and/or/xor direct bit with direct bit 4 bcmp compare direct bit to direct bit 4 bfldh/l bitwise modify masked high/low byte of bit-addressable direct word memory with immediate data 4 cmp(b) compare word (byte) operands 2 / 4 cmpd1/2 compare word data to gpr and decrement gpr by 1/2 2 / 4 cmpi1/2 compare word data to gpr and increment gpr by 1/2 2 / 4 prior determine number of shift cycles to normalize direct word gpr and store result in direct word gpr 2 shl / shr shift left/right direct word gpr 2 rol / ror rotate left/right direct word gpr 2 ashr arithmetic (sign bit) shift right direct word gpr 2
semiconductor group 27 1998-05-01 c161ri mov(b) move word (byte) data 2 / 4 movbs move byte operand to word operand with sign extension 2 / 4 movbz move byte operand to word operand. with zero extension 2 / 4 jmpa, jmpi, jmpr jump absolute/indirect/relative if condition is met 4 jmps jump absolute to a code segment 4 j(n)b jump relative if direct bit is (not) set 4 jbc jump relative and clear bit if direct bit is set 4 jnbs jump relative and set bit if direct bit is not set 4 calla, calli, callr call absolute/indirect/relative subroutine if condition is met 4 calls call absolute subroutine in any code segment 4 pcall push direct word register onto system stack and call absolute subroutine 4 trap call interrupt service routine via immediate trap number 2 push, pop push/pop direct word register onto/from system stack 2 scxt push direct word register onto system stack and update register with word operand 4 ret return from intra-segment subroutine 2 rets return from inter-segment subroutine 2 retp return from intra-segment subroutine and pop direct word register from system stack 2 reti return from interrupt service subroutine 2 srst software reset 4 idle enter idle mode 4 pwrdn enter power down mode (supposes nmi -pin being low) 4 srvwdt service watchdog timer 4 diswdt disable watchdog timer 4 einit signify end-of-initialization on rstout-pin 4 atomic begin atomic sequence 2 extr begin extended register sequence 2 extp(r) begin extended page (and register) sequence 2 / 4 exts(r) begin extended segment (and register) sequence 2 / 4 nop null operation 2 instruction set summary (contd) mnemonic description bytes
semiconductor group 28 1998-05-01 c161ri special function registers overview the following table lists all sfrs which are implemented in the c161ri in alphabetical order. bit-addressable sfrs are marked with the letter b in column name. sfrs within the extended sfr-space (esfrs) are marked with the letter e in column physical address. registers within on-chip x-peripherals ( i 2 c) are marked with the letter x in column physical address. an sfr can be specified via its individual mnemonic name. depending on the selected addressing mode, an sfr can be accessed via its physical address (using the data page pointers), or via its short 8-bit address (without using the data page pointers). name physical address 8-bit address description reset value adcic b ff98 h cc h a/d converter end of conversion interrupt control register 0000 h adcon b ffa0 h d0 h a/d converter control register 0000 h addat fea0 h 50 h a/d converter result register 0000 h addrsel1 fe18 h 0c h address select register 1 0000 h addrsel2 fe1a h 0d h address select register 2 0000 h addrsel3 fe1c h 0e h address select register 3 0000 h addrsel4 fe1e h 0f h address select register 4 0000 h adeic b ff9a h cd h a/d converter overrun error interrupt control register 0000 h buscon0 b ff0c h 86 h bus configuration register 0 0000 h buscon1 b ff14 h 8a h bus configuration register 1 0000 h buscon2 b ff16 h 8b h bus configuration register 2 0000 h buscon3 b ff18 h 8c h bus configuration register 3 0000 h buscon4 b ff1a h 8d h bus configuration register 4 0000 h caprel fe4a h 25 h gpt2 capture/reload register 0000 h cc8ic b ff88 h c4 h external interrupt 0 control register 0000 h cc9ic b ff8a h c5 h external interrupt 1 control register 0000 h cc10ic b ff8c h c6 h external interrupt 2 control register 0000 h cc11ic b ff8e h c7 h external interrupt 3 control register 0000 h cc12ic b ff90 h c8 h external interrupt 4 control register 0000 h cc13ic b ff92 h c9 h external interrupt 5 control register 0000 h cc14ic b ff94 h ca h external interrupt 6 control register 0000 h cc15ic b ff96 h cb h external interrupt 7 control register 0000 h cp fe10 h 08 h cpu context pointer register fc00 h
semiconductor group 29 1998-05-01 c161ri cric b ff6a h b5 h gpt2 caprel interrupt control register 0000 h csp fe08 h 04 h cpu code segment pointer register (8 bits, not directly writeable) 0000 h dp0l b f100 h e 80 h p0l direction control register 00 h dp0h b f102 h e 81 h p0h direction control register 00 h dp1l b f104 h e 82 h p1l direction control register 00 h dp1h b f106 h e 83 h p1h direction control register 00 h dp2 b ffc2 h e1 h port 2 direction control register 0000 h dp3 b ffc6 h e3 h port 3 direction control register 0000 h dp4 b ffca h e5 h port 4 direction control register 00 h dp6 b ffce h e7 h port 6 direction control register 00 h dpp0 fe00 h 00 h cpu data page pointer 0 register (10 bits) 0000 h dpp1 fe02 h 01 h cpu data page pointer 1 register (10 bits) 0001 h dpp2 fe04 h 02 h cpu data page pointer 2 register (10 bits) 0002 h dpp3 fe06 h 03 h cpu data page pointer 3 register (10 bits) 0003 h exicon b f1c0 h e e0 h external interrupt control register 0000 h icadr ed06 h x --- i 2 c address register 0xxx h iccfg ed00 h x --- i 2 c configuration register xx00 h iccon ed02 h x --- i 2 c control register 0000 h icrtb ed08 h x --- i 2 c receive/transmit buffer xx h icst ed04 h x --- i 2 c status register 0000 h idchip f07c h e 3e h identifier 09xx h idmanuf f07e h e 3f h identifier 1820 h idmem f07a h e 3d h identifier 0000 h idprog f078 h e 3c h identifier 0000 h isnc b f1de h e ef h interrupt subnode control register 0000 h mdc b ff0e h 87 h cpu multiply divide control register 0000 h mdh fe0c h 06 h cpu multiply divide register C high word 0000 h mdl fe0e h 07 h cpu multiply divide register C low word 0000 h odp2 b f1c2 h e e1 h port 2 open drain control register 0000 h odp3 b f1c6 h e e3 h port 3 open drain control register 0000 h odp6 b f1ce h e e7 h port 6 open drain control register 00 h ones b ff1e h 8f h constant value 1s register (read only) ffff h name physical address 8-bit address description reset value
semiconductor group 30 1998-05-01 c161ri p0l b ff00 h 80 h port 0 low register (lower half of port0) 00 h p0h b ff02 h 81 h port 0 high register (upper half of port0) 00 h p1l b ff04 h 82 h port 1 low register (lower half of port1) 00 h p1h b ff06 h 83 h port 1 high register (upper half of port1) 00 h p2 b ffc0 h e0 h port 2 register 0000 h p3 b ffc4 h e2 h port 3 register 0000 h p4 b ffc8 h e4 h port 4 register (7 bits) 00 h p5 b ffa2 h d1 h port 5 register (read only) xxxx h p5didis b ffa4 h d2 h port 5 digital input disable register 0000 h p6 b ffcc h e6 h port 6 register (8 bits) 00 h pecc0 fec0 h 60 h pec channel 0 control register 0000 h pecc1 fec2 h 61 h pec channel 1 control register 0000 h pecc2 fec4 h 62 h pec channel 2 control register 0000 h pecc3 fec6 h 63 h pec channel 3 control register 0000 h pecc4 fec8 h 64 h pec channel 4 control register 0000 h pecc5 feca h 65 h pec channel 5 control register 0000 h pecc6 fecc h 66 h pec channel 6 control register 0000 h pecc7 fece h 67 h pec channel 7 control register 0000 h psw b ff10 h 88 h cpu program status word 0000 h rp0h b f108 h e 84 h system startup configuration register (rd. only) xx h rtch f0d6 h e 6b h rtc high register no rtcl f0d4 h e 6a h rtc low register no s0bg feb4 h 5a h serial channel 0 baud rate generator reload register 0000 h s0con b ffb0 h d8 h serial channel 0 control register 0000 h s0eic b ff70 h b8 h serial channel 0 error interrupt control register 0000 h s0rbuf feb2 h 59 h serial channel 0 receive buffer register (read only) xxxx h s0ric b ff6e h b7 h serial channel 0 receive interrupt control register 0000 h s0tbic b f19c h e ce h serial channel 0 transmit buffer interrupt control register 0000 h s0tbuf feb0 h 58 h serial channel 0 transmit buffer register 0000 h name physical address 8-bit address description reset value
semiconductor group 31 1998-05-01 c161ri s0tic b ff6c h b6 h serial channel 0 transmit interrupt control register 0000 h sp fe12 h 09 h cpu system stack pointer register fc00 h sscbr f0b4 h e 5a h ssc baudrate register 0000 h ssccon b ffb2 h d9 h ssc control register 0000 h ssceic b ff76 h bb h ssc error interrupt control register 0000 h sscrb f0b2 h e 59 h ssc receive buffer (read only) xxxx h sscric b ff74 h ba h ssc receive interrupt control register 0000 h ssctb f0b0 h e 58 h ssc transmit buffer (write only) 0000 h ssctic b ff72 h b9 h ssc transmit interrupt control register 0000 h stkov fe14 h 0a h cpu stack overflow pointer register fa00 h stkun fe16 h 0b h cpu stack underflow pointer register fc00 h syscon b ff12 h 89 h cpu system configuration register 0xx0 h 1) syscon2 b f1d0 h e e8 h cpu system configuration register 2 0000 h syscon3 b f1d4 h e ea h cpu system configuration register 3 0000 h t14 f0d2 h e 69 h rtc timer 14 register no t14rel f0d0 h e 68 h rtc timer 14 reload register no t2 fe40 h 20 h gpt1 timer 2 register 0000 h t2con b ff40 h a0 h gpt1 timer 2 control register 0000 h t2ic b ff60 h b0 h gpt1 timer 2 interrupt control register 0000 h t3 fe42 h 21 h gpt1 timer 3 register 0000 h t3con b ff42 h a1 h gpt1 timer 3 control register 0000 h t3ic b ff62 h b1 h gpt1 timer 3 interrupt control register 0000 h t4 fe44 h 22 h gpt1 timer 4 register 0000 h t4con b ff44 h a2 h gpt1 timer 4 control register 0000 h t4ic b ff64 h b2 h gpt1 timer 4 interrupt control register 0000 h t5 fe46 h 23 h gpt2 timer 5 register 0000 h t5con b ff46 h a3 h gpt2 timer 5 control register 0000 h t5ic b ff66 h b3 h gpt2 timer 5 interrupt control register 0000 h t6 fe48 h 24 h gpt2 timer 6 register 0000 h t6con b ff48 h a4 h gpt2 timer 6 control register 0000 h t6ic b ff68 h b4 h gpt2 timer 6 interrupt control register 0000 h tfr b ffac h d6 h trap flag register 0000 h name physical address 8-bit address description reset value
semiconductor group 32 1998-05-01 c161ri 1) the system configuration is selected during reset. 2) the reset value depends on the indicated reset source. wdt feae h 57 h watchdog timer register (read only) 0000 h wdtcon b ffae h d7 h watchdog timer control register 00xx h 2) xp0ic b f186 h e c3 h i 2 c data interrupt control register 0000 h xp1ic b f18e h e c7 h i 2 c protocol interrupt control register 0000 h xp2ic b f196 h e cb h x-peripheral 2 interrupt control register 0000 h xp3ic b f19e h e cf h rtc interrupt control register 0000 h zeros b ff1c h 8e h constant value 0s register (read only) 0000 h name physical address 8-bit address description reset value
semiconductor group 33 1998-05-01 c161ri absolute maximum ratings ambient temperature under bias ( t a ): sab-c161ri ...................................................................................................................0 to + 70 c saf-c161ri .............................................................................................................. C 40 to + 85 c storage temperature ( t st )........................................................................................C 65 to + 150 c voltage on v dd pins with respect to ground ( v ss ) ..................................................... C 0.5 to + 6.5 v voltage on any pin with respect to ground ( v ss ) .................................................C 0.5 to v dd + 0.5 v input current on any pin during overload condition.................................................. C 10 to + 10 ma absolute sum of all input currents during overload condition ..............................................|100 ma| power dissipation.............................................................................................................. ....... 1.5 w note: stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. during absolute maximum rating overload conditions ( v in > v dd or v in < v ss ) the voltage on v dd pins with respect to ground ( v ss ) must not exceed the values defined by the absolute maximum ratings. parameter interpretation the parameters listed in the following partly represent the characteristics of the c161ri and partly its demands on the system. to aid in interpreting the parameters right, when evaluating them for a design, they are marked in column symbol: cc ( c ontroller c haracteristics): the logic of the c161ri will provide signals with the respective timing characteristics. sr ( s ystem r equirement): the external system must provide signals with the respective timing characteristics to the c161ri.
semiconductor group 34 1998-05-01 c161ri dc characteristics v dd = 4.5 - 5.5 v; v ss = 0 v; f cpu = 20 mhz t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri parameter symbol limit values unit test condition min. max. input low voltage (p3.0, p3.1, p6.5, p6.6, p6.7) v il1 sr C 0.5 0.3 v dd vC input low voltage (ttl) v il sr C 0.5 0.2 v dd C 0.1 vC input low voltage (special threshold) v ils sr C 0.5 2.0 v C input high voltage rstin v ih1 sr 0.6 v dd v dd + 0.5 v C input high voltage xtal1, p3.0, p3.1, p6.5, p6.6, p6.7 v ih2 sr 0.7 v dd v dd + 0.5 v C input high voltage (ttl) v ih sr 0.2 v dd + 0.9 v dd + 0.5 v C input high voltage (special threshold) v ihs sr 0.8 v dd C 0.2 v dd + 0.5 v C input hysteresis (special threshold) hys 400 C mv C output low voltage (port0, port1, port 4, ale, rd , wr , bhe , clkout, rstout ) v ol cc C0.45v i ol = 2.4 ma output low voltage (p3.0, p3.1, p6.5, p6.6, p6.7) v ol2 cc C0.4v i ol2 = 3 ma output low voltage (all other outputs) v ol1 cc C0.45v i ol1 = 1.6 ma output high voltage (port0, port1, port 4, ale, rd , wr , bhe , clkout, rstout ) v oh cc 0.9 v dd 2.4 Cv i oh = C 500 m a i oh = C 2.4 ma output high voltage 1) (all other outputs) v oh1 cc 0.9 v dd 2.4 Cv v i oh = C 250 m a i oh = C 1.6 ma input leakage current (port 5) i oz1 cc C 200 na 0.45 v < v in < v dd input leakage current (all other) i oz2 cc C 500 na 0.45 v < v in < v dd overload current i ov sr C 5ma 5) 8) rstin pullup resistor r rst cc 50 250 k w C read/write inactive current 4) i rwh 2) CC40 m a v out = 2.4 v read/write active current 4) i rwl 3) C500 C m a v out = v olmax
semiconductor group 35 1998-05-01 c161ri ale inactive current 4) i alel 2) C40 m a v out = v olmax ale active current 4) i aleh 3) 500 C m a v out = 2.4 v port 6 inactive current 4) i p6h 2) CC40 m a v out = 2.4 v port 6 active current 4) i p6l 3) C 500 C m a v out = v ol1max port0 configuration current 4) i p0h 2) CC10 m a v in = v ihmin i p0l 3) C100 C m a v in = v ilmax xtal1 input current i il cc C 20 m a0 v < v in < v dd pin capacitance 5) (digital inputs/outputs) c io cc C10pf f = 1 mhz t a = 25 c power supply current (active) with all peripherals active i dd C7 + 3 f cpu ma rstin = v il2 f cpu in [mhz] 6) idle mode supply current with all peripherals active i idx C3 + 1.1 f cpu ma rstin = v ih1 f cpu in [mhz] 6) idle mode supply current with all peripherals deactivated, pll off, sdd factor = 32 i ido C 500 + 50 f osc 9) m arstin = v ih1 f osc in [mhz] 6) power-down mode supply current with rtc running i pdr C 100 + 25 f osc 9) m a v dd = 5.5 v f osc in [mhz] 7) power-down mode supply current with rtc disabled i pdo C50 m a v dd = 5.5 v 7) parameter symbol limit values unit test condition min. max.
semiconductor group 36 1998-05-01 c161ri notes 1) this specification is not valid for outputs which are switched to open drain mode. in this case the respective output will float and the voltage results from the external circuitry. 2) the maximum current may be drawn while the respective signal line remains inactive. 3) the minimum current must be drawn in order to drive the respective signal line active. 4) this specification is only valid during reset, or during adapt-mode. 5) not 100% tested, guaranteed by design characterization. 6) the supply current is a function of the operating frequency. this dependency is illustrated in the figure below. these parameters are tested at v ddmax and 20 mhz cpu clock with all outputs disconnected and all inputs at v il or v ih . the oscillator also contributes to the total supply current. the given values refer to the worst case, i.e. i pdrmax . for lower oscillator frequencies the respective supply current can be reduced accordingly. 7) this parameter is tested including leakage currents. all inputs (including pins configured as inputs) at 0 v to 0.1 v or at v dd C 0.1 v to v dd , v ref = 0 v, all outputs (including pins configured as outputs) disconnected. 8) overload conditions under operating conditions occur if the voltage on the respective pin exceeds the specified operating range (i.e. v ov > v dd +0.5v or v ov < v ss - 0.5 v). the absolute sum of input overload currents on all port pins may not exceed 50 ma . the supply voltage ( v dd and v ss ) must remain within the specified limits. 9) this parameter is determined mainly by the current consumed by the oscillator. this current, however, is influenced by the external oscillator circuitry (crystal, capacitors). the values given for i pdr refer to a typical circuitry and may change in case of a not optimized external oscillator circuitry. a typical value for i pdr at room temperature and f cpu = 16 mhz is 300 m a.
semiconductor group 37 1998-05-01 c161ri figure 8 supply/idle current as a function of operating frequency figure 9 power down supply current as a function of oscillator frequency i [ma] f cpu [mhz] 5 10 40 i ddtyp i idxmax i ddmax i idxtyp 10 15 20 70 i [ m a] f osc [mhz] 4 i pdrmax 8 12 16 i pdomax 1500 1250 1000 750 500 250 i idomax i idotyp
semiconductor group 38 1998-05-01 c161ri ac characteristics definition of internal timing the internal operation of the c161ri is controlled by the internal cpu clock f cpu . both edges of the cpu clock can trigger internal (e.g. pipeline) or external (e.g. bus cycles) operations. the specification of the external timing (ac characteristics) therefore depends on the time between two consecutive edges of the cpu clock, called tcl (see figure below). figure 10 generation mechanisms for the cpu clock the cpu clock signal can be generated via different mechanisms. the duration of tcls and their variation (and also the derived external timing) depends on the used mechanism to generate f cpu . this influence must be regarded when calculating the timings for the c161ri. the used mechanism to generate the cpu clock is selected during reset via the logic levels on pins p0.15-13 (p0h.7-5). tcl tcl f cpu f xtal direct clock drive tcl tcl f cpu f xtal prescaler operation
semiconductor group 39 1998-05-01 c161ri the table below associates the combinations of these three bits with the respective clock generation mode. 1) the maximum frequency depends on the duty cycle of the external clock signal. prescaler operation when pins p0.15-13 (p0h.7-5) equal 001 during reset the cpu clock is derived from the internal oscillator (input clock signal) by a 2:1 prescaler. the frequency of f cpu is half the frequency of f xtal and the high and low time of f cpu (i.e. the duration of an individual tcl) is defined by the period of the input clock f xtal . the timings listed in the ac characteristics that refer to tcls therefore can be calculated using the period of f xtal for any tcl. direct drive when pins p0.15-13 (p0h.7-5) equal 011 during reset the on-chip phase locked loop is disabled and the cpu clock is directly driven from the internal oscillator with the input clock signal. the frequency of f cpu directly follows the frequency of f xtal so the high and low time of f cpu (i.e. the duration of an individual tcl) is defined by the duty cycle of the input clock f xtal . the timings listed below that refer to tcls therefore must be calculated using the minimum tcl that is possible under the respective circumstances. this minimum value can be calculated via the following formula: tcl min = 1/ f xtal dc min (dc = duty cycle) for two consecutive tcls the deviation caused by the duty cycle of f xtal is compensated so the duration of 2tcl is always 1/ f xtal . the minimum value tcl min therefore has to be used only once for timings that require an odd number of tcls (1,3,...). timings that require an even number of tcls (2,4,...) may use the formula 2tcl = 1/ f xtal . note: the address float timings in multiplexed bus mode ( t 11 and t 45 ) use the maximum duration of tcl (tcl max = 1/ f xtal dc max ) instead of tcl min . c161ri clock generation modes p0.15-13 (p0h.7-5) cpu frequency f cpu = f xtal f notes 1 1 1 reserved default configuration without pull-downs 110 reserved 101 reserved 100 reserved 011 f xtal 1 direct drive 1) 010 reserved 001 f xtal / 2 cpu clock via prescaler 000 reserved
semiconductor group 40 1998-05-01 c161ri ac characteristics external clock drive xtal1 v dd = 4.5 - 5.5 v; v ss = 0 v t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri 1) the clock input signal must reach the defined levels v il and v ih2 . 2) the specified minimum low and high times allow a duty cycle range of 40...60% at 16 mhz. figure 11 external clock drive xtal1 parameter symbol direct drive 1:1 prescaler 2:1 unit min. max. min. max. oscillator period t osc sr 62 8000 31 4000 ns high time t 1sr 25 1) 2) C6Cns low time t 2sr 25 1) 2) C6Cns rise time t 3sr C 10 1) C6 1) ns fall time t 4sr C 10 1) C6 1) ns mct02534 3 t 4 t v ih2 v il v dd 0.5 1 t 2 t osc t
semiconductor group 41 1998-05-01 c161ri a/d converter characteristics v dd = 4.5 - 5.5 v; v ss = 0 v t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri 4.0 v v aref v dd + 0.1 v; v ss - 0.1 v v agnd v ss + 0.2 v the conversion time of the c161ris a/d converter is programmable. the table below should be used to calculate the above timings. the limit values for f bc must not be exceeded when selecting adctc. converter timing example: assumptions: f cpu = 16 mhz (i.e. t cpu = 62.5 ns), adctc = 01. basic clock f bc = f cpu / 4 = 4 mhz, i.e. t bc = 250 ns. sample time t s = t bc 6 = 1500 ns. conversion time t c = 30 t bc + 2 t cpu = (7500 + 125) ns = 7.625 m s. parameter symbol limit values unit test condition min. max. analog input voltage range v ain sr v agnd v aref v 1) basic clock frequency f bc 0.5 4 mhz 2) sample time t s cc C 6 t bc t bc = 1 / f bc conversion time t c cc C 30 t bc + 2 t cpu 3) t cpu = 1 / f cpu total unadjusted error tue cc C 2lsb 4) internal resistance of reference voltage source r aref sr C t bc / 125 - 0.25 k w t bc in [ns] 5) 6) internal resistance of analog source r asrc sr C t s / 750 - 0.25 k w t s in [ns] 6) 7) adc input capacitance c ain cc C 50 pf 6) adcon.15|14 (adctc) a/d converter basic clock f bc 2) 00 f cpu / 2 01 f cpu / 4 10 f cpu / 8 11 f cpu / 16
semiconductor group 42 1998-05-01 c161ri notes 1) v ain may exceed v agnd or v aref up to the absolute maximum ratings. however, the conversion result in these cases will be x000 h or x3ff h , respectively. 2) the limit values for f bc must not be exceeded when selecting the cpu frequency and the adctc setting. 3) this parameter includes the sample time t s , the time for determining the digital result and the time to load the result register with the conversion result. values for the basic clock t bc depend on programming and can be taken from the table above. this parameter depends on the adc control logic. it is not a real maximum value, but rather a fixum. 4) tue is tested at v aref =5.0v, v agnd =0v, v dd = 4.9 v. it is guaranteed by design for all other voltages within the defined voltage range. the specified tue is guaranteed only if an overload condition (see i ov specification) occurs on maximum 2 not selected analog input pins and the absolute sum of input overload currents on all analog input pins does not exceed 10 ma. 5) during the conversion the adcs capacitance must be repeatedly charged or discharged. the internal resistance of the reference voltage source must allow the capacitance to reach its respective voltage level within each conversion step. the maximum internal resistance results from the programmed conversion timing. 6) not 100% tested, guaranteed by design. 7) during the sample time the input capacitance c i can be charged/discharged by the external source. the internal resistance of the analog source must allow the capacitance to reach its final voltage level within t s . after the end of the sample time t s , changes of the analog input voltage have no effect on the conversion result. values for the sample time t s depend on programming and can be taken from the table above.
semiconductor group 43 1998-05-01 c161ri testing waveforms figure 12 input output waveforms figure 13 float waveforms ac inputs during testing are driven at 2.4 v for a logic 1 and 0.45 v for a logic 0. timing measurements are made at v ih min for a logic 1 and v il max for a logic 0. for timing purposes a port pin is no longer floating when a 100 mv change from load voltage occurs, but begins to float when a 100 mv change from the loaded v oh / v ol l e v e l o c c u r s ( i oh / i ol = 20 ma).
semiconductor group 44 1998-05-01 c161ri memory cycle variables the timing tables below use three variables which are derived from the busconx registers and represent the special characteristics of the programmed memory cycle. the following table describes, how these variables are to be computed. ac characteristics multiplexed bus v dd = 4.5 - 5.5 v; v ss = 0 v t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri c l = 100 pf ale cycle time = 6 tcl + 2 t a + t c + t f (186 ns at 16 mhz cpu clock without waitstates) description symbol values ale extension t a tcl memory cycle time waitstates t c 2tcl (15 - ) memory tristate time t f 2tcl (1 - ) parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max. ale high time t 5 cc 21 + t a C tcl - 10 + t a Cns address setup to ale t 6 cc 15 + t a C tcl - 16 + t a Cns address hold after ale t 7 cc 21 + t a C tcl - 10 + t a Cns ale falling edge to rd , wr (with rw-delay) t 8 cc 21 + t a C tcl - 10 + t a Cns ale falling edge to rd , wr (no rw-delay) t 9 cc C 10 + t a C C 10 + t a Cns address float after rd , wr (with rw-delay) t 10 cc C6C 6 ns address float after rd , wr (no rw-delay) t 11 cc C37C tcl + 6ns rd , wr low time (with rw-delay) t 12 cc 53 + t c C 2tcl - 10 + t c Cns rd , wr low time (no rw-delay) t 13 cc 84 + t c C 3tcl - 10 + t c Cns
semiconductor group 45 1998-05-01 c161ri rd to valid data in (with rw-delay) t 14 sr C 43 + t c C 2tcl - 20 + t c ns rd to valid data in (no rw-delay) t 15 sr C 74 + t c C 3tcl - 20 + t c ns ale low to valid data in t 16 sr C 74 + t a + t c C 3tcl - 20 + t a + t c ns address to valid data in t 17 sr C 95 + 2 t a + t c C 4tcl - 30 + 2 t a + t c ns data hold after rd rising edge t 18 sr0C0 C ns data float after rd t 19 sr C 49 + t f C 2tcl - 14 + t f ns data valid to wr t 22 cc 43 + t c C 2tcl - 20 + t c Cns data hold after wr t 23 cc 49 + t f C 2tcl - 14 + t f Cns ale rising edge after rd , wr t 25 cc 49 + t f C 2tcl - 14 + t f Cns address hold after rd , wr t 27 cc 49 + t f C 2tcl - 14 + t f Cns ale falling edge to cs t 38 cc C 4 - t a 10 - t a C 4 - t a 10 - t a ns cs low to valid data in t 39 sr C 74 + t c + 2 t a C 3tcl - 20 + t c + 2 t a ns cs hold after rd , wr t 40 cc 80 + t f C 3tcl - 14 + t f Cns ale fall. edge to rdcs , wrcs (with rw delay) t 42 cc 27 + t a Ctcl - 4 + t a Cns ale fall. edge to rdcs , wrcs (no rw delay) t 43 cc C 4 + t a C-4 + t a Cns address float after rdcs , wrcs (with rw delay) t 44 ccC0C 0 ns address float after rdcs , wrcs (no rw delay) t 45 cc C 31 C tcl ns rdcs to valid data in (with rw delay) t 46 sr C 39 + t c C 2tcl - 24 + t c ns parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max.
semiconductor group 46 1998-05-01 c161ri rdcs to valid data in (no rw delay) t 47 sr C 70 + t c C 3tcl - 24 + t c ns rdcs , wrcs low time (with rw delay) t 48 cc 53 + t c C 2tcl - 10 + t c Cns rdcs , wrcs low time (no rw delay) t 49 cc 84 + t c C 3tcl - 10 + t c Cns data valid to wrcs t 50 cc 49 + t c C 2tcl - 14 + t c Cns data hold after rdcs t 51 sr0C0 C ns data float after rdcs t 52 sr C 43 + t f C 2tcl - 20 + t f ns address hold after rdcs , wrcs t 54 cc 43 + t f C 2tcl - 20 + t f Cns data hold after wrcs t 56 cc 43 + t f C 2tcl - 20 + t f Cns parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max.
semiconductor group 47 1998-05-01 c161ri figure 14-1 external memory cycle: multiplexed bus, with read/write delay, normal ale data in data out address address t 38 t 44 t 10 address ale csx a23-a16 (a15-a8) bhe bus read cycle rd rdcsx bus write cycle wr , wrl , wrh wrcsx t 5 t 16 t 17 t 6 t 7 t 39 t 40 t 25 t 27 t 18 t 19 t 14 t 46 t 12 t 48 t 10 t 22 t 23 t 44 t 12 t 48 t 8 t 42 t 42 t 8 t 50 t 51 t 54 t 52 t 56
semiconductor group 48 1998-05-01 c161ri figure 14-2 external memory cycle: multiplexed bus, with read/write delay, extended ale data out address data in address t 38 t 44 t 10 address ale csx a23-a16 (a15-a8) bhe bus read cycle rd rdcsx bus write cycle wr , wrl , wrh wrcsx t 5 t 16 t 17 t 6 t 7 t 39 t 40 t 25 t 27 t 18 t 19 t 14 t 46 t 12 t 48 t 10 t 22 t 23 t 44 t 12 t 48 t 8 t 42 t 42 t 8 t 50 t 51 t 54 t 52 t 56
semiconductor group 49 1998-05-01 c161ri figure 14-3 external memory cycle: multiplexed bus, no read/write delay, normal ale data out address address data in t 38 address ale csx a23-a16 (a15-a8) bhe bus read cycle rd rdcsx bus write cycle wr , wrl , wrh wrcsx t 5 t 16 t 17 t 6 t 7 t 39 t 40 t 25 t 27 t 18 t 19 t 15 t 47 t 13 t 49 t 22 t 23 t 13 t 49 t 9 t 43 t 43 t 9 t 11 t 45 t 11 t 45 t 50 t 51 t 54 t 52 t 56
semiconductor group 50 1998-05-01 c161ri figure 14-4 external memory cycle: multiplexed bus, no read/write delay, extended ale data out address data in address t 38 address ale csx a23-a16 (a15-a8) bhe bus read cycle rd rdcsx bus write cycle wr , wrl , wrh wrcsx t 5 t 16 t 17 t 6 t 7 t 39 t 40 t 25 t 27 t 18 t 19 t 15 t 47 t 13 t 49 t 22 t 23 t 13 t 49 t 9 t 43 t 43 t 9 t 11 t 45 t 11 t 45 t 50 t 51 t 54 t 52 t 56
semiconductor group 51 1998-05-01 c161ri ac characteristics demultiplexed bus v dd = 4.5 - 5.5 v; v ss = 0 v t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri c l = 100 pf ale cycle time = 4 tcl + 2 t a + t c + t f (125 ns at 16 mhz cpu clock without waitstates) parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max. ale high time t 5 cc 21 + t a C tcl - 10 + t a Cns address setup to ale t 6 cc 15 + t a C tcl - 16 + t a Cns ale falling edge to rd , wr (with rw-delay) t 8 cc 21 + t a Ctcl - 10 + t a Cns ale falling edge to rd , wr (no rw-delay) t 9 cc C 10 + t a CC 10 + t a Cns rd , wr low time (with rw-delay) t 12 cc 53 + t c C 2tcl - 10 + t c Cns rd , wr low time (no rw-delay) t 13 cc 84 + t c C 3tcl - 10 + t c Cns rd to valid data in (with rw-delay) t 14 sr C 43 + t c C 2tcl - 20 + t c ns rd to valid data in (no rw-delay) t 15 sr C 74 + t c C 3tcl - 20 + t c ns ale low to valid data in t 16 sr C 74 + t a + t c C 3tcl - 20 + t a + t c ns address to valid data in t 17 sr C 95 + 2 t a + t c C 4tcl - 30 + 2 t a + t c ns data hold after rd rising edge t 18 sr0C0 C ns data float after rd rising edge (with rw-delay 1) ) t 20 sr C 49 + 2 t a + t f 1) C 2tcl - 14 + 2 t a + t f 1) ns data float after rd rising edge (no rw-delay 1) ) t 21 sr C 21 + 2 t a + t f 1) Ctcl - 10 + 2 t a + t f 1) ns data valid to wr t 22 cc 43 + t c C 2tcl - 20 + t c Cns data hold after wr t 24 cc 21 + t f C tcl - 10 + t f Cns ale rising edge after rd , wr t 26 cc C 10 + t f C C 10 + t f Cns
semiconductor group 52 1998-05-01 c161ri 1) rw-delay and t a refer to the next following bus cycle. 2) it is guaranteed by design that read data are latched before the address changes. address hold after wr 2) t 28 cc 0 + t f C0 + t f Cns ale falling edge to cs t 38 cc C 4 - t a 10 - t a C 4 - t a 10 - t a ns cs low to valid data in t 39 sr C 74 + t c + 2 t a C 3tcl - 20 + t c + 2 t a ns cs hold after rd , wr t 41 cc 17 + t f Ctcl - 14 + t f Cns ale falling edge to rdcs , wrcs (with rw-delay) t 42 cc 27 + t a Ctcl - 4 + t a Cns ale falling edge to rdcs , wrcs (no rw-delay) t 43 cc C 4 + t a CC 4 + t a Cns rdcs to valid data in (with rw-delay) t 46 sr C 39 + t c C 2tcl - 24 + t c ns rdcs to valid data in (no rw-delay) t 47 sr C 70 + t c C 3tcl - 24 + t c ns rdcs , wrcs low time (with rw-delay) t 48 cc 53 + t c C 2tcl - 10 + t c Cns rdcs , wrcs low time (no rw-delay) t 49 cc 84 + t c C 3tcl - 10 + t c Cns data valid to wrcs t 50 cc 49 + t c C 2tcl - 14 + t c Cns data hold after rdcs t 51 sr0C0 C ns data float after rdcs (with rw-delay) t 53 sr C 43 + t f C 2tcl - 20 + t f ns data float after rdcs (no rw-delay) t 68 sr C 11 + t f Ctcl - 20 + t f ns address hold after rdcs , wrcs t 55 cc C 10 + t f CC 10 + t f Cns data hold after wrcs t 57 cc 17 + t f Ctcl - 14 + t f Cns parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max.
semiconductor group 53 1998-05-01 c161ri figure 15-1 external memory cycle: demultiplexed bus, with read/write delay, normal ale data out data in t 38 address ale csx a23-a16 a15-a0 bhe bus (d15-d8) d7-d0 read cycle rd rdcsx write cycle wrcsx t 5 t 16 t 17 t 6 t 39 t 41 t 26 t 28 t 18 t 20 t 14 t 46 t 12 t 48 t 22 t 24 t 12 t 48 t 8 t 42 t 42 t 8 t 50 t 51 t 55 t 53 t 57 bus (d15-d8) d7-d0 wr , wrl , wrh
semiconductor group 54 1998-05-01 c161ri figure 15-2 external memory cycle: demultiplexed bus, with read/write delay, extended ale data out data in t 38 address ale csx a23-a16 a15-a0 bhe read cycle rd rdcsx write cycle wrcsx t 5 t 16 t 17 t 6 t 39 t 41 t 26 t 28 t 18 t 20 t 14 t 46 t 12 t 48 t 22 t 24 t 12 t 48 t 8 t 42 t 42 t 8 t 50 t 51 t 55 t 53 t 57 bus (d15-d8) d7-d0 bus (d15-d8) d7-d0 wr , wrl , wrh
semiconductor group 55 1998-05-01 c161ri figure 15-3 external memory cycle: demultiplexed bus, no read/write delay, normal ale data out data in t 38 address ale csx a23-a16 a15-a0 bhe read cycle rd rdcsx write cycle wrcsx t 5 t 16 t 17 t 6 t 39 t 41 t 26 t 28 t 18 t 21 t 15 t 47 t 13 t 49 t 22 t 24 t 13 t 49 t 9 t 43 t 43 t 9 t 50 t 51 t 55 t 68 t 57 bus (d15-d8) d7-d0 bus (d15-d8) d7-d0 wr , wrl , wrh
semiconductor group 56 1998-05-01 c161ri figure 15-4 external memory cycle: demultiplexed bus, no read/write delay, extended ale data out data in t 38 address ale csx a23-a16 a15-a0 bhe read cycle rd rdcsx write cycle wr , wrl , wrh wrcsx t 5 t 16 t 17 t 6 t 39 t 41 t 26 t 28 t 18 t 21 t 15 t 47 t 13 t 49 t 22 t 24 t 13 t 49 t 9 t 43 t 43 t 9 t 50 t 51 t 55 t 68 t 57 bus (d15-d8) d7-d0 bus (d15-d8) d7-d0
semiconductor group 57 1998-05-01 c161ri ac characteristics clkout and ready v dd = 4.5 - 5.5 v; v ss = 0 v t a = 0 to + 70 c for sab-c161ri t a = C 40 to + 85 c for saf-c161ri c l = 100 pf notes 1) these timings are given for test purposes only, in order to assure recognition at a specific clock edge. 2) demultiplexed bus is the worst case. for multiplexed bus 2tcl are to be added to the maximum values. this adds even more time for deactivating ready . the 2t a and t c refer to the next following bus cycle, t f refers to the current bus cycle. parameter symbol max. cpu clock = 16 mhz variable cpu clock 1/2tcl = 1 to 16 mhz unit min. max. min. max. clkout cycle time t 29 cc 62 62 2tcl 2tcl ns clkout high time t 30 cc 25 C tcl C 6 C ns clkout low time t 31 cc 21 C tcl C 10 C ns clkout rise time t 32 ccC4C 4 ns clkout fall time t 33 ccC4C 4 ns clkout rising edge to ale falling edge t 34 cc 0 + t a 10 + t a 0 + t a 10 + t a ns synchronous ready setup time to clkout t 35 sr 14 C 14 C ns synchronous ready hold time after clkout t 36 sr4C4 C ns asynchronous ready low time t 37 sr 76 C 2tcl + 14 C ns asynchronous ready setup time 1) t 58 sr 14 C 14 C ns asynchronous ready hold time 1) t 59 sr 4C4 C ns async. ready hold time after rd , wr high (demultiplexed bus) 2) t 60 sr 01 + 2 t a + t c + t f 2) 0tcl - 30 + 2 t a + t c + t f 2) ns
semiconductor group 58 1998-05-01 c161ri figure 16 clkout and ready notes 1) cycle as programmed, including mctc waitstates (example shows 0 mctc ws). 2) the leading edge of the respective command depends on rw-delay. 3) ready sampled high at this sampling point generates a ready controlled waitstate, ready sampled low at this sampling point terminates the currently running bus cycle. 4) ready may be deactivated in response to the trailing (rising) edge of the corresponding command (rd or wr ). 5) if the asynchronous ready signal does not fulfill the indicated setup and hold times with respect to clkout (eg. because clkout is not enabled), it must fulfill t 37 in order to be safely synchronized. this is guaranteed, if ready is removed in reponse to the command (see note 4) ). 6) multiplexed bus modes have a mux waitstate added after a bus cycle, and an additional mttc waitstate may be inserted here. for a multiplexed bus with mttc waitstate this delay is 2 clkout cycles, for a demultiplexed bus without mttc waitstate this delay is zero. 7) the next external bus cycle may start here. clkout ale t 30 t 34 sync ready t 35 t 36 t 35 t 36 async ready t 58 t 59 t 58 t 59 waitstate ready mux/tristate 6) t 32 t 33 t 29 running cycle 1) t 31 t 37 3) 3) 5) command rd , wr t 60 4) see 6) 2) 7) 3) 3)
semiconductor group 59 1998-05-01 c161ri package outlines figure 17 plastic package, p-mqfp-100-2 (smd) (plastic metric quad flat package) sorts of packing package outlines for tubes, trays etc. are contained in our data book package information. dimensions in mm smd = surface mounted device
semiconductor group 60 1998-05-01 c161ri package outlines (contd) figure 18 plastic package, p-tqfp-100-1 (smd) (plastic thin metric quad flat package) sorts of packing package outlines for tubes, trays etc. are contained in our data book package information. dimensions in mm smd = surface mounted device

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