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DATA SHEET
MOS INTEGRATED CIRCUIT
PD45128163-E
128M-bit Synchronous DRAM 4-bank, LVTTL
Description
The PD45128163 is high-speed 134,217,728-bit synchronous dynamic random-access memory, organized as 2,097,152 x 16 x 4 (word x bit x bank). The synchronous DRAM achieved high-speed data transfer using the pipeline architecture. All inputs and outputs are synchronized with the positive edge of the clock. The synchronous DRAM is compatible with Low Voltage TTL (LVTTL). This product is packaged in 54-pin TSOP (II).
Features
* Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge * Pulsed interface * Possible to assert random column address in every cycle * Quad internal banks controlled by BA0(A13) and BA1(A12) * Byte control by LDQM and UDQM * Programmable Wrap sequence (Sequential / Interleave) * Programmable burst length (1, 2, 4, 8 and full page) * Programmable /CAS latency (2 and 3) * Automatic precharge and controlled precharge * CBR (Auto) refresh and self refresh * x16 organization * Single 3.3 V 0.3 V power supply * LVTTL compatible inputs and outputs * 4,096 refresh cycles / 64 ms * Burst termination by Burst stop command and Precharge command * TSOP (II) package with lead free solder (Sn-Bi) RoHS compliant
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.
Not all devices/types available in every country. Please check with local Elpida Memory, Inc. for availability and additional information.
Document No. E0728N10 (Ver.1.0) Date Published June 2005 (K) Japan Printed in Japan URL: http://www.elpida.com Elpida Memory, Inc. 2005
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.
PD45128163-E
Ordering Information
Part number Organization (word x bit x bank) 2M x 16 x 4 Clock frequency MHz (MAX.) 133 Package 54-pin Plastic TSOP (II)
PD45128163G5-A75-9JF-E
2
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Part Number
[ x16 ]
PD45128163G5 - A75L - E
NEC Memory Synchronous DRAM Memory density 128 : 128M bits Low Power Organization 16 : x16 Minimum cycle time 75 : 7.5 ns (133 MHz @CL=3) Number of banks 3 : 4 banks, LVTTL
Environment Code E: Lead Free
Low voltage A : 3.3 V 0.3 V
Package G5 : TSOP (II)
Data Sheet E0728N10 (Ver. 1.0)
3
PD45128163-E
Pin Configurations
/xxx indicates active low signal.
54-pin Plastic TSOP (II) 2M words x 16 bits x 4 banks
VCC DQ0 VCCQ DQ1 DQ2 VSSQ DQ3 DQ4 VCCQ DQ5 DQ6 VSSQ DQ7 VCC LDQM /WE /CAS /RAS /CS BA0(A13) BA1(A12) A10 A0 A1 A2 A3 VCC
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
54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28
Vss DQ15 VssQ DQ14 DQ13 VccQ DQ12 DQ11 VssQ DQ10 DQ9 VccQ DQ8 Vss NC UDQM CLK CKE NC A11 A9 A8 A7 A6 A5 A4 Vss
A0 to A11
Note
: Address inputs : Data inputs / outputs : Clock input : Clock enable : Chip select : Row address strobe : Column address strobe : Write enable : Lower DQ mask enable : Upper DQ mask enable : Supply voltage : Ground : Supply voltage for DQ : Ground for DQ : No connection Note A0 to A11 : Row address inputs A0 to A8 : Column address inputs
BA0(A13), BA1(A12) : Bank select DQ0 to DQ15 CLK CKE /CS /RAS /CAS /WE LDQM UDQM VCC VSS VCCQ VSSQ NC
4
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Block Diagram
CLK CKE
Clock Generator
Bank D
Bank C
Bank B
Address
Mode Register
Row Decoder
Row Address Buffer & Refresh Counter
Bank A
Sense Amplifier
Command Decoder Control Logic
/CS /RAS /CAS /WE
Data Control Circuit
Input & Output Buffer
Latch Circuit
Column Address Buffer & Burst Counter
Column Decoder & Latch Circuit
DQM
DQ
Data Sheet E0728N10 (Ver. 1.0)
5
PD45128163-E
CONTENTS
1. 2. 3. 4.
Input / Output Pin Function ............................................................................................................. 8 Commands ........................................................................................................................................ 9 Simplified State Diagram ............................................................................................................... 12 Truth Table ...................................................................................................................................... 13
4.1 Command Truth Table ............................................................................................................................ 13 4.2 DQM Truth Table ..................................................................................................................................... 13 4.3 CKE Truth Table ...................................................................................................................................... 13 4.4 Operative Command Table .................................................................................................................... 14 4.5 Command Truth Table for CKE ............................................................................................................. 17
5. 6. 7.
Initialization ..................................................................................................................................... 18 Programming the Mode Register .................................................................................................. 19 Mode Register ................................................................................................................................. 20
7.1 Burst Length and Sequence ................................................................................................................. 21
8. 9.
Address Bits of Bank-Select and Precharge ............................................................................... 22 Precharge ........................................................................................................................................ 23
10. Auto Precharge ............................................................................................................................... 24
10.1 10.2 Read with Auto Precharge .................................................................................................................. 24 Write with Auto Precharge ................................................................................................................. 25
11. Read / Write Command Interval ..................................................................................................... 26
11.1 11.2 11.3 11.4 Read to Read Command Interval ....................................................................................................... 26 Write to Write Command Interval ....................................................................................................... 26 Write to Read Command Interval ....................................................................................................... 27 Read to Write Command Interval ....................................................................................................... 28
12. Burst Termination ........................................................................................................................... 29
12.1 12.2 Burst Stop Command ......................................................................................................................... 29 Precharge Termination ....................................................................................................................... 30 12.2.1 12.2.2 Precharge Termination in READ Cycle ................................................................................... 30 Precharge Termination in WRITE Cycle .................................................................................. 31
6
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
13. Electrical Specifications ................................................................................................................ 32
13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 AC Parameters for Read Timing ........................................................................................................ 37 AC Parameters for Write Timing ........................................................................................................ 39 Relationship between Frequency and Latency ................................................................................ 40 Mode Register Set ............................................................................................................................... 41 Power on Sequence and CBR (Auto) Refresh .................................................................................. 42 /CS Function ........................................................................................................................................ 43 Clock Suspension during Burst Read (using CKE Function) ......................................................... 44 Clock Suspension during Burst Write (using CKE Function) ......................................................... 46 Power Down Mode and Clock Mask .................................................................................................. 48
13.10 CBR (Auto) Refresh ............................................................................................................................. 49 13.11 Self Refresh (Entry and Exit) .............................................................................................................. 50 13.12 Random Column Read (Page with Same Bank) ............................................................................... 51 13.13 Random Column Write (Page with Same Bank) ............................................................................... 53 13.14 Random Row Read (Ping-Pong Banks) ............................................................................................ 55 13.15 Random Row Write (Ping-Pong Banks) ............................................................................................ 57 13.16 Read and Write .................................................................................................................................... 59 13.17 Interleaved Column Read Cycle ......................................................................................................... 61 13.18 Interleaved Column Write Cycle ......................................................................................................... 63 13.19 Auto Precharge after Read Burst ....................................................................................................... 65 13.20 Auto Precharge after Write Burst ....................................................................................................... 67 13.21 Full Page Read Cycle .......................................................................................................................... 69 13.22 Full Page Write Cycle .......................................................................................................................... 71 13.23 Byte Write Operation ........................................................................................................................... 73 13.24 Burst Read and Single Write (Option) ............................................................................................... 75 13.25 Full Page Random Column Read ....................................................................................................... 77 13.26 Full Page Random Column Write ....................................................................................................... 79 13.27 PRE (Precharge) Termination of Burst .............................................................................................. 81
14. Package Drawing ............................................................................................................................ 83 15. Recommended Soldering Conditions ........................................................................................... 84
Data Sheet E0728N10 (Ver. 1.0)
7
PD45128163-E
1. Input / Output Pin Function
Pin name CLK Input / Output Input Function CLK is the master clock input. Other inputs signals are referenced to the CLK rising edge. CKE Input CKE determine validity of the next CLK (clock). If CKE is high, the next CLK rising edge is valid; otherwise it is invalid. If the CLK rising edge is invalid, the internal clock is not issued and the PD45128xxx suspends operation. When the PD45128xxx is not in burst mode and CKE is negated, the device enters power down mode. During power down mode, CKE must remain low. /CS Input /CS low starts the command input cycle. When /CS is high, commands are ignored but operations continue. /RAS, /CAS, /WE Input /RAS, /CAS and /WE have the same symbols on conventional DRAM but different functions. For details, refer to the command table. A0 - A11 Input Row Address is determined by A0 - A11 at the CLK (clock) rising edge in the active command cycle. It does not depend on the bit organization. Column Address is determined by A0 - A9, A11 at the CLK rising edge in the read or write command cycle. It depends on the bit organization: A0 - A8 for x16 device. A10 defines the precharge mode. When A10 is high in the precharge command cycle, all banks are precharged; when A10 is low, only the bank selected by BA0(A13) and BA1(A12) is precharged. When A10 is high in read or write command cycle, the precharge starts automatically after the burst access. BA0, BA1 Input BA0(A13) and BA1(A12) are the bank select signal. In command cycle, BA0(A13) and BA1(A12) low select bank A, BA0(A13) high and BA1(A12) low select bank B, BA0(A13) low and BA1(A12) high select bank C and then BA0(A13) and BA1(A12) high select bank D. UDQM, LDQM Input DQM controls I/O buffers. In x16 products, UDQM and LDQM control upper byte and lower byte I/O buffers, respectively. In read mode, UDQM and LDQM controls the output buffers like a conventional /OE pin. UDQM and LDQM high and UDQM and LDQM low turn the output buffers off and on, respectively. The UDQM and LDQM latency for the read is two clocks. In write mode, UDQM and LDQM controls the word mask. Input data is written to the memory cell if UDQM and LDQM is low but not if UDQM and LDQM is high.
The UDQM and LDQM latency for the write is zero.
DQ0 - DQ15 VCC, VSS, VCCQ, VSSQ Input / Output (Power supply) DQ pins have the same function as I/O pins on a conventional DRAM. VCC and VSS are power supply pins for internal circuits. VCCQ and VSSQ are power supply pins for the output buffers.
8
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
2. Commands
Mode register set command (/CS, /RAS, /CAS, /WE = Low) The PD45128xxx has a mode register that defines how the device operates. In this command, A0 through A11, BA0(A13) and BA1(A12) are the data input pins. After power on, the mode register set command must be executed to initialize the device. The mode register can be set only when all banks are in idle state. During 2 CLK (tRSC) following this command, the PD45128xxx cannot accept any other commands.
Fig.1 Mode register set command
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
H
Activate command (/CS, /RAS = Low, /CAS, /WE = High)
Fig.2 Row address strobe and bank activate command
CLK
The PD45128xxx has four banks, each with 4,096 rows. This command activates the bank selected by BA0(A13) and BA1(A12) and a row address selected by A0 through A11. This command corresponds to a conventional DRAM's /RAS falling.
CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
H
Row Row
Precharge command (/CS, /RAS, /WE = Low, /CAS = High) This command begins precharge operation of the bank selected by BA0(A13) and BA1(A12). When A10 is High, all banks are precharged, regardless of BA0(A13) and BA1(A12). When A10 is Low, only the bank selected by BA0(A13) and BA1(A12) is precharged. After this command, the PD45128xxx can't accept the activate command to the precharging bank during tRP (precharge to activate command period). This command corresponds to a conventional DRAM's /RAS rising.
Fig.3 Precharge command
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10
(Precharge select)
H
Add
Data Sheet E0728N10 (Ver. 1.0)
9
PD45128163-E
Write command (/CS, /CAS, /WE = Low, /RAS = High) If the mode register is in the burst write mode, this command sets the burst start address given by the column address to begin the burst write operation. The first write data in burst mode can input with this command with subsequent data on following clocks.
Fig.4 Column address and write command
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
Col.
H
Read command (/CS, /CAS = Low, /RAS, /WE = High) Read data is available after /CAS latency requirements have been met. This command sets the burst start address given by the column address.
Fig.5 Column address and read command
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
Col.
H
CBR (auto) refresh command (/CS, /RAS, /CAS = Low, /WE, CKE = High) This command is a request to begin the CBR (auto) refresh operation. The refresh address is generated internally. Before executing CBR (auto) refresh, all banks must be precharged. After this cycle, all banks will be in the idle (precharged) state and ready for a row activate command. During tRC period (from refresh command to refresh or activate command), the PD45128xxx cannot accept any other command.
Fig.6 CBR (auto) refresh command
CLK CKE /CS /RAS /CAS /WE BA0(A13), BA1(A12) A10 Add
H
10
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Self refresh entry command (/CS, /RAS, /CAS, CKE = Low, /WE = High) After the command execution, self refresh operation continues while CKE remains low. When CKE goes high, the PD45128xxx exits the self refresh mode. During self refresh mode, refresh interval and refresh operation are performed internally, so there is no need for external control. Before executing self refresh, all banks must be precharged.
Fig.7 Self refresh entry command
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
Burst stop command (/CS, /WE = Low, /RAS, /CAS = High) This command can stop the current burst operation.
Fig.8 Burst stop command in Full Page Mode
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
H
No operation (/CS = Low, /RAS, /CAS, /WE = High) This command is not an execution command. No operations begin or terminate by this command.
Fig.9 No operation
CLK CKE /CS /RAS /CAS /WE
BA0(A13), BA1(A12) A10 Add
H
Data Sheet E0728N10 (Ver. 1.0)
11
PD45128163-E
3. Simplified State Diagram
12
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
4. Truth Table
4.1 Command Truth Table
Function Symbol n-1 Device deselect No operation Burst stop Read Read with auto precharge Write Write with auto precharge Bank activate Precharge select bank Precharge all banks Mode register set DESL NOP BST READ READA WRIT WRITA ACT PRE PALL MRS H H H H H H H H H H H CKE n x x x x x x x x x x x H L L L L L L L L L L x H H H H H H L L L L x H H L L L L H H H L x H L H H L L H L L L /CS /RAS /CAS /WE BA1, BA0 x x x V V V V V V x L x x x L H L H V L H L A10 A11, A9 - A0 x x x V V V V V x x V
Remark H = High level, L = Low level, x = High or Low level (Don't care), V = Valid data input 4.2 DQM Truth Table
Function Symbol n-1 Upper byte write enable / output enable Lower byte write enable / output enable Upper byte write inhibit / output disable Lower byte write inhibit / output disable ENBU ENBL MASKU MASKL H H H H CKE n x x x x U L x H x DQM L x L x H
Remark H = High level, L = Low level, x = High or Low level (Don't care) 4.3 CKE Truth Table
Current state Function Symbol n-1 Activating Any Clock suspend Idle Idle Self refresh Clock suspend mode entry Clock suspend mode Clock suspend mode exit CBR (auto) refresh command Self refresh entry Self refresh exit REF SELF H L L H H L L Idle Power down Power down entry Power down exit H L L CKE n L L H H L H H L H H x x x L L L H x H L x x x L L H x x x H x x x L L H x x x H x x x H H H x x x H x x x x x x x x x x /CS /RAS /CAS /WE Address
Remark H = High level, L = Low level, x = High or Low level (Don't care)
Data Sheet E0728N10 (Ver. 1.0)
13
PD45128163-E
4.4 Operative Command Table Note1
Current state Idle /CS /RAS /CAS /WE H L L L L L L L Row active H L L L L L L L Read H L L L L L L L L Write H L L L L L L L L x H H H L L L L x H H H L L L L x H H H H L L L L x H H H H L L L L x H L L H H L L x H L L H H L L x H H L L H H L L x H H L L H H L L x x H L H L H L x x H L H L H L x H L H L H L H L x H L H L H L H L x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code Address Command DESL NOP or BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP or BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Action Nop or power down Nop or power down ILLEGAL ILLEGAL Row activating Nop CBR (auto) refresh or self refresh Mode register accessing Nop Nop Begin read : Determine AP Begin write : Determine AP ILLEGAL Precharge ILLEGAL ILLEGAL Continue burst to end Row active Continue burst to end Row active Burst stop Row active Terminate burst, new read : Determine AP Terminate burst, start write : Determine AP ILLEGAL Terminate burst, precharging ILLEGAL ILLEGAL Continue burst to end Write recovering Continue burst to end Write recovering Burst stop Row active Terminate burst, start read : Determine AP Terminate burst, new write : Determine AP ILLEGAL Terminate burst, precharging ILLEGAL ILLEGAL 7, 8 7 3 9 7 7, 8 3 5 5 3 6 4
(1/3)
Notes 2 2 3 3
14
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
(2/3)
Current state Read with auto precharge /CS /RAS /CAS /WE H L L L L L L L L Write with auto precharge H x H H H H L L L L x x H H L L H H L L x x H L H L H L H L x x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code Address Command DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL Action Continue burst to end Precharging Continue burst to end Precharging ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL Continue burst to end Write recovering with auto precharge Continue burst to end Write recovering with auto precharge ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL Nop Enter idle after tRP Nop Enter idle after tRP ILLEGAL ILLEGAL ILLEGAL ILLEGAL Nop Enter idle after tRP ILLEGAL ILLEGAL Nop Enter bank active after tRCD Nop Enter bank active after tRCD ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL 3 3 3, 10 3 3 3 3 3 3 3 3 3 3 3 3 Notes
L L L L L L L L Precharging H L L L L L L L L Row activating H L L L L L L L L
H H H H L L L L x H H H H L L L L x H H H H L L L L
H H L L H H L L x H H L L H H L L x H H L L H H L L
H L H L H L H L x H L H L H L H L x H L H L H L H L
NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS
Data Sheet E0728N10 (Ver. 1.0)
15
PD45128163-E
(3/3)
Current state Write recovering /CS /RAS /CAS /WE H L L L L L L L L Write recovering with auto precharge H L L L L L L L L Refreshing H L L L L Mode register accessing H L L L L x H H H H L L L L x H H H H L L L L x H H L L x H H H L x H H L L H H L L x H H L L H H L L x H L H L x H H L x x H L H L H L H L x H L H L H L H L x x x x x x H L x x x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x BA, CA, A10 BA, CA, A10 BA, RA BA, A10 x Op-Code x x x x x x x x x x Address Command DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP/BST READ/WRIT
ACT/PRE/PALL REF/SELF/MRS
Action Nop Enter row active after tDPL Nop Enter row active after tDPL Nop Enter row active after tDPL Start read, Determine AP New write, Determine AP ILLEGAL ILLEGAL ILLEGAL ILLEGAL Nop Enter precharge after tDPL Nop Enter precharge after tDPL Nop Enter precharge after tDPL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL Nop Enter idle after tRC Nop Enter idle after tRC ILLEGAL ILLEGAL ILLEGAL Nop Enter idle after tRSC Nop Enter idle after tRSC ILLEGAL ILLEGAL ILLEGAL
Notes
8
3 3
3, 8 3 3
DESL NOP BST READ/WRIT
ACT/PRE/PALL/ REF/SELF/MRS
Notes 1. 2. 3. 4. 5. 6. 7. 8. 9.
All entries assume that CKE was active (High level) during the preceding clock cycle. If all banks are idle, and CKE is inactive (Low level), PD45128xxx will enter Power down mode. All input buffers except CKE will be disabled. Illegal to bank in specified states; Function may be legal in the bank indicated by Bank Address (BA), depending on the state of that bank. If all banks are idle, and CKE is inactive (Low level), PD45128xxx will enter Self refresh mode. All input buffers except CKE will be disabled. Illegal if tRCD is not satisfied. Illegal if tRAS is not satisfied. Must satisfy burst interrupt condition. Must satisfy bus contention, bus turn around, and/or write recovery requirements. Must mask preceding data which don't satisfy tDPL.
10. Illegal if tRRD is not satisfied. Remark H = High level, L = Low level, x = High or Low level (Don't care), V = Valid data 16
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
4.5 Command Truth Table for CKE
Current State CKE n-1 Self refresh H L L L L L Self refresh recovery H H H H H H H H Power down H L L L All banks idle H H H H H H H H H H L Row active H L Any state other than listed above H H L L n x H H H H L H H H H L L L L x H H L H H H H H L L L L L x x x H L H L x H L L L x H L L L H L L L x H L x H L L L L H L L L L x x x x x x x x x H H L x x H H L x H H L x x H x x H L L L x H L L L x x x x x x x x x H L x x x H L x x H L x x x H x x x H L L x x H L L x x x x x x x x x x x x x x x x x x x x x x x H x x x x H L x x x H L x x x x x x x x x x x Op-Code x x x x Op-Code x x x x x x x x x x x x x x x x x INVALID, CLK (n - 1) would exit self refresh Self refresh recovery Self refresh recovery ILLEGAL ILLEGAL Maintain self refresh Idle after tRC Idle after tRC ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL ILLEGAL INVALID, CLK (n - 1) would exit power down EXIT power down Idle EXIT power down Idle Maintain power down mode Refer to operations in Operative Command Table Refer to operations in Operative Command Table Refer to operations in Operative Command Table CBR (auto) Refresh Refer to operations in Operative Command Table Refer to operations in Operative Command Table Refer to operations in Operative Command Table Refer to operations in Operative Command Table Self refresh Refer to operations in Operative Command Table Power down Refer to operations in Operative Command Table Power down Refer to operations in Operative Command Table Begin clock suspend next cycle Exit clock suspend next cycle Maintain clock suspend 2 1 1 1 /CS /RAS /CAS /WE Address Action Notes
Notes 1. Self refresh can be entered only from the all banks idle state. Power down can be entered only from all banks idle or row active state. 2. Must be legal command as defined in Operative Command Table. Remark H = High level, L = Low level, x = High or Low level (Don't care)
Data Sheet E0728N10 (Ver. 1.0)
17
PD45128163-E
5. Initialization
The synchronous DRAM is initialized in the power-on sequence according to the following. (1) (2) To stabilize internal circuits, when power is applied, a 100 s or longer pause must precede any signal toggling. After the pause, all banks must be precharged using the Precharge command (The Precharge all banks command is convenient). (3) Once the precharge is completed and the minimum tRP is satisfied, the mode register can be programmed. After the mode register set cycle, tRSC (2 CLK minimum) pause must be satisfied as well. (4) Two or more CBR (Auto) refresh must be performed.
Remarks 1. The sequence of Mode register programming and Refresh above may be transposed. 2. CKE and DQM must be held high until the Precharge command is issued to ensure data-bus Hi-Z.
18
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
6. Programming the Mode Register
The mode register is programmed by the Mode register set command using address bits A11 through A0, BA0(A13) and BA1(A12) as data inputs. The register retains data until it is reprogrammed or the device loses power. The mode register has four fields; Options Wrap type Burst length : A11 through A7, BA0(A13), BA1(A12) : A3 : A2 through A0
/CAS latency : A6 through A4
Following mode register programming, no command can be issued before at least 2 CLK have elapsed. /CAS Latency /CAS latency is the most critical of the parameters being set. It tells the device how many clocks must elapse before the data will be available. The value is determined by the frequency of the clock and the speed grade of the device. 13.3 Relationship between Frequency and Latency shows the relationship of /CAS latency to the clock period and the speed grade of the device. Burst Length Burst Length is the number of words that will be output or input in a read or write cycle. After a read burst is completed, the output bus will become Hi-Z. The burst length is programmable as 1, 2, 4, 8 or full page. Wrap Type (Burst Sequence) The wrap type specifies the order in which the burst data will be addressed. This order is programmable as either "Sequential" or "Interleave". The method chosen will depend on the type of CPU in the system. Some microprocessor cache systems are optimized for sequential addressing and others for interleaved addressing. 7.1 Burst Length and Sequence shows the addressing sequence for each burst length using them. Both sequences support bursts of 1, 2, 4 and 8. Additionally, sequence supports the full page length.
Data Sheet E0728N10 (Ver. 1.0)
19
PD45128163-E
7. Mode Register
BA0 BA1 (A13) (A12) A11 0 0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
0
0
A10
0
A9
0
A8
1
A7 A6 A5 A4 A3 A2 A1 A0
JEDEC Standard Test Set (refresh counter test)
BA0 BA1 (A13) (A12) A11
x x
x
x
A10
1
A9
0
A8
0
A7 A6
LTMODE
A5 A4
WT
A3 A2
BL
A1 A0
BA0 BA1 (A13) (A12) A11
Burst Read and Single Write (for Write Through Cache)
1
BA0 BA1 (A13) (A12) A11
x x
0
A7 A6 A5 A4 A3 A2 A1 A0
Use in future
A10
A9
A8
x
x
A10
x
A9
1
A8
1
A7
V
A6
V
A5
V
A4
V
A3
V
A2
V
A1
V
A0
Vender Specific
V = Valid x = Don't care Mode Register Set
BA0 BA1 (A13) (A12) A11
0 0
0
0
0
0
0
LTMODE
WT
BL
Burst length
Bits2-0 000 001 010 011 100 101 110 111
0 1
WT = 0 1 2 4 8 R R R Full page
WT = 1 1 2 4 8 R R R R
Wrap type
Sequential Interleave
Latency mode
Bits6-4 000 001 010 011 100 101 110 111
/CAS latency R R 2 3 R R R R
Remark R : Reserved
Mode Register Set Timing
CLK CKE /CS /RAS /CAS /WE A0 - A11, BA0(13), BA1(A12)
Mode Register Set
20
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
7.1 Burst Length and Sequence
[Burst of Two]
Starting address (column address A0, binary) 0 1 Sequential addressing sequence (decimal) 0, 1 1, 0 Interleave addressing sequence (decimal) 0, 1 1, 0
[Burst of Four]
Starting address (column address A1 - A0, binary) 00 01 10 11 Sequential addressing sequence (decimal) 0, 1, 2, 3 1, 2, 3, 0 2, 3, 0, 1 3, 0, 1, 2 Interleave addressing sequence (decimal) 0, 1, 2, 3 1, 0, 3, 2 2, 3, 0, 1 3, 2, 1, 0
[Burst of Eight]
Starting address (column address A2 - A0, binary) 000 001 010 011 100 101 110 111 Sequential addressing sequence (decimal) 0, 1, 2, 3, 4, 5, 6, 7 1, 2, 3, 4, 5, 6, 7, 0 2, 3, 4, 5, 6, 7, 0, 1 3, 4, 5, 6, 7, 0, 1, 2 4, 5, 6, 7, 0, 1, 2, 3 5, 6, 7, 0, 1, 2, 3, 4 6, 7, 0, 1, 2, 3, 4, 5 7, 0, 1, 2, 3, 4, 5, 6 Interleave addressing sequence (decimal) 0, 1, 2, 3, 4, 5, 6, 7 1, 0, 3, 2, 5, 4, 7, 6 2, 3, 0, 1, 6, 7, 4, 5 3, 2, 1, 0, 7, 6, 5, 4 4, 5, 6, 7, 0, 1, 2, 3 5, 4, 7, 6, 1, 0, 3, 2 6, 7, 4, 5, 2, 3, 0, 1 7, 6, 5, 4, 3, 2, 1, 0
Full page burst is an extension of the above tables of sequential addressing, with the length being 512 (for 8M x16 device).
Data Sheet E0728N10 (Ver. 1.0)
21
PD45128163-E
8. Address Bits of Bank-Select and Precharge
Row A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11
BA1 BA0
(A12) (A13)
BA1(A12) BA0(A13)
Result
(Activate command)
0 0
1 1
0 1 0 1
Select Bank A "Activate" command Select Bank B "Activate" command
Select Bank C "Activate" command Select Bank D "Activate" command
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
BA1 BA0
(A12) (A13)
(Precharge command)
A10 BA1(A12) BA0(A13) 0 0 0 0 1 0 0 0 1 0 1 1 1 x x
Result Precharge Bank A Precharge Bank B Precharge Bank C Precharge Bank D Precharge All Banks
x : Don't care
0
Col. A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 x
BA1 BA0
(A12) (A13)
1
disables Auto-Precharge (End of Burst) enables Auto-Precharge (End of Burst)
(/CAS strobes)
BA1(A12) BA0(A13)
Result
0 0
1 1
0 1 0 1
enables Read/Write commands for Bank A enables Read/Write commands for Bank B
enables Read/Write commands for Bank C enables Read/Write commands for Bank D
22
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
9. Precharge
The precharge command can be issued anytime after tRAS (MIN.) is satisfied. Soon after the precharge command is issued, precharge operation performed and the synchronous DRAM enters the idle state after tRP is satisfied. The parameter tRP is the time required to perform the precharge. The earliest timing in a read cycle that a precharge command can be issued without losing any data in the burst is as follows. It is depending on the /CAS latency and clock cycle time.
Burst length=4
T0
CLK /CAS latency = 2 Command
T1
T2
T3
T4
T5
T6
T7
T8
READ
PRE Hi-Z
DQ /CAS latency = 3 Command
Q1
Q2
Q3
Q4
READ
PRE Hi-Z
DQ
Q1
Q2
Q3
Q4
(tRAS must be satisfied)
In order to write all data to the memory cell correctly, the asynchronous parameter "tDPL" must be satisfied. The tDPL
(MIN.)
specification defines the earliest time that a precharge command can be issued. Minimum number of clocks is
calculated by dividing tDPL (MIN.) with clock cycle time. In summary, the precharge command can be issued relative to reference clock that indicates the last data word is valid. In the following table, minus means clocks before the reference; plus means time after the reference.
/CAS latency 2 3 Read -1 -2 Write +tDPL (MIN.) +tDPL (MIN.)
Data Sheet E0728N10 (Ver. 1.0)
23
PD45128163-E
10. Auto Precharge
During a read or write command cycle, A10 controls whether auto precharge is selected. A10 high in the Read or Write command (Read with Auto precharge command or Write with Auto precharge command), auto precharge is selected and begins automatically. The tRAS must be satisfied with a read with auto precharge or a write with auto precharge operation. In addition, the next activate command to the bank being precharged cannot be executed until the precharge cycle ends. In read cycle, once auto precharge has started, an activate command to the bank can be issued after tRP has been satisfied. In write cycle, the tDAL must be satisfied to issue the next activate command to the bank being precharged. The timing that begins the auto precharge cycle depends on both the /CAS latency programmed into the mode register and whether read or write cycle.
10.1 Read with Auto Precharge During a read cycle, the auto precharge begins one clock earlier (/CAS latency of 2) or two clocks earlier (/CAS latency of 3) the last data word output.
Burst length = 4 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9
/CAS latency = 2 Command READA B Auto precharge starts
Hi-Z DQ QB1 QB2 QB3 QB4
/CAS latency = 3 Command READA B Auto precharge starts
Hi-Z DQ QB1 QB2 QB3 QB4
(tRAS must be satisfied)
Remark READA means Read with Auto precharge
24
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
10.2 Write with Auto Precharge During a write cycle, the auto precharge starts at the timing that is equal to the value of the tDPL (MIN.) after the last data word input to the device.
Burst length = 4 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8
/CAS latency = 2 Command DQ
Auto precharge starts
WRITA B Hi-Z
DB1
DB2
DB3
DB4
tDPL(MIN.)
/CAS latency = 3 Command WRITA B
Auto precharge starts
Hi-Z DQ
DB1
DB2
DB3
DB4
tDPL(MIN.)
(tRAS must be satisfied)
Remark WRITA means Write with Auto Precharge In summary, the auto precharge begins relative to a reference clock that indicates the last data word is valid. In the table below, minus means clocks before the reference; plus means after the reference.
/CAS latency 2 3 Read -1 -2 Write +tDPL (MIN.) +tDPL (MIN.)
Data Sheet E0728N10 (Ver. 1.0)
25
PD45128163-E
11. Read / Write Command Interval
11.1 Read to Read Command Interval During a read cycle, when new Read command is issued, it will be effective after /CAS latency, even if the previous read operation does not completed. READ will be interrupted by another READ. The interval between the commands is 1 cycle minimum. Each Read command can be issued in every clock without any restriction.
Burst length = 4, /CAS latency = 2 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8
T9
Command
READ A
READ B
Hi-Z
DQ
QA1
QB1
QB2
QB3
QB4
1cycle
11.2 Write to Write Command Interval
During a write cycle, when a new Write command is issued, the previous burst will terminate and the new burst will begin with a new Write command. WRITE will be interrupted by another WRITE. The interval between the commands is minimum 1 cycle. Each Write command can be issued in every clock without any restriction.
Burst length = 4, /CAS latency = 2 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8
Command
WRITE A
WRITE B
Hi-Z
DQ
DA1
DB1
DB2
DB3
DB4
1cycle
26
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
11.3 Write to Read Command Interval
Write command and Read command interval is also 1 cycle. Only the write data before Read command will be written. The data bus must be Hi-Z at least one cycle prior to the first DOUT.
Burst length = 4 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8
/CAS latency = 2 Command
WRITE A
READ B
Hi-Z
DQ
DA1
QB1
QB2
QB3
QB4
/CAS latency = 3 Command WRITE A
READ B
Hi-Z DQ
DA1
QB1
QB2
QB3
QB4
Data Sheet E0728N10 (Ver. 1.0)
27
PD45128163-E
11.4 Read to Write Command Interval During a read cycle, READ can be interrupted by WRITE. The Read and Write command interval is 1 cycle minimum. There is a restriction to avoid data conflict. The Data bus must be Hi-Z using DQM before WRITE.
Burst length = 4 T0 CLK T1 T2 T3 T4 T5 T6 T7 T8
Command
DQM
READ
WRITE
Hi-Z
DQ
1cycle
D1
D2
D3
D4
READ can be interrupted by WRITE. DQM must be High at least 3 clocks prior to the Write command.
Burst length = 8 T0 CLK
/CAS latency = 2
T1
T2
T3
T4
T5
T6
T7
T8
T9
Command
DQM
READ
WRITE
DQ
Q1
Q2
Q3
Hi-Z is necessary
D1
D2
D3
/CAS latency = 3
Command
DQM
READ
WRITE
DQ
Q1
Q2
Hi-Z is necessary
D1
D2
D3
28
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
12. Burst Termination
There are two methods to terminate a burst operation other than using a Read or a Write command. One is the burst stop command and the other is the precharge command.
12.1 Burst Stop Command During a read cycle, when the burst stop command is issued, the burst read data are terminated and the data bus goes to Hi-Z after the /CAS latency from the burst stop command.
Burst length = X T0 CLK T1 T2 T3 T4 T5 T6 T7
Command
READ
BST
/CAS latency = 2 DQ
/CAS latency = 3 DQ
Hi-Z
Q1
Q2
Q3
Hi-Z
Q1
Q2
Q3
Remark BST: Burst stop command During a write cycle, when the burst stop command is issued, the burst write data are terminated and data bus goes to Hi-Z at the same clock with the burst stop command.
Burst length = X T0 CLK T1 T2 T3 T4 T5 T6 T7
Command
WRITE
BST
/CAS latency = 2, 3 DQ
D1
Hi-Z
D2
D3
D4
Remark BST: Burst stop command
Data Sheet E0728N10 (Ver. 1.0)
29
PD45128163-E
12.2 Precharge Termination
12.2.1 Precharge Termination in READ Cycle
During a read cycle, the burst read operation is terminated by a precharge command. When the precharge command is issued, the burst read operation is terminated and precharge starts. The same bank can be activated again after tRP from the precharge command. To issue a precharge command, tRAS must be satisfied. When /CAS latency is 2, the read data will remain valid until one clock after the precharge command.
Burst length = X, /CAS latency = 2 T0 CLK T1 T2 T3 T4 T5 T6 T7
Command
READ
PRE
ACT
Hi-Z
DQ
Q1
Q2
Q3
Q4
tRP
(tRAS must be satisfied)
When /CAS latency is 3, the read data will remain valid until two clocks after the precharge command.
Burst length = X, /CAS latency = 3 T0 CLK T1 T2 T3 T4 T5 T6 T7
T8
Command
READ
PRE
ACT
Hi-Z
DQ
Q1
Q2
Q3
tRP
Q4
(tRAS must be satisfied)
30
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
12.2.2 Precharge Termination in WRITE Cycle
During a write cycle, the burst write operation is terminated by a precharge command. When the precharge command is issued, the burst write operation is terminated and precharge starts. The same bank can be activated again after tRP from the precharge command. To issue a precharge command, tRAS must be satisfied. When /CAS latency is 2, the write data written prior to the precharge command will be correctly stored. However, invalid data may be written at the same clock as the precharge command. To prevent this from happening, DQM must be high at the same clock as the precharge command. This will mask the invalid data.
Burst length = X, /CAS latency = 2 T0 CLK T1 T2 T3 T4 T5 T6 T7
Command
WRITE
PRE
ACT
DQM
Hi-Z
DQ
D1
D2
D3
D4
D5
tRP
(tRAS must be satisfied)
When /CAS latency is 3, the write data written prior to the precharge command will be correctly stored. However, invalid data may be written at the same clock as the precharge command. To prevent this from happening, DQM must be high at the same clock as the precharge command. This will mask the invalid data.
Burst length = X, /CAS latency = 3 T0 CLK T1 T2 T3 T4 T5 T6 T7
T8
Command
WRITE
PRE
ACT
DQM
Hi-Z
DQ
D1
D2
D3
D4
D5
tRP
(tRAS must be satisfied)
Data Sheet E0728N10 (Ver. 1.0)
31
PD45128163-E
13. Electrical Specifications
* All voltages are referenced to VSS (GND). * After power up, wait more than 100 s and then, execute Power on sequence and CBR (auto) Refresh before proper device operation is achieved. Absolute Maximum Ratings
Parameter Voltage on power supply pin relative to GND Voltage on any pin relative to GND Short circuit output current Power dissipation Operating ambient temperature Storage temperature Symbol VCC, VCCQ VT IO PD TA Tstg Condition Rating -0.5 to +4.6 -0.5 to +4.6 50 1 0 to 70 -55 to + 125 Unit V V mA W C C
Caution
Exposing the device to stress above those listed in Absolute Maximum Ratings could cause permanent damage. The device is not meant to be operated under conditions outside the limits described in the operational section of this specification. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Supply voltage High level input voltage Low level input voltage Operating ambient temperature Symbol VCC, VCCQ VIH VIL TA Condition MIN. 3.0 2.0 -0.3
Note2
TYP. 3.3
MAX. 3.6 VCC+0.3
Note1
Unit V V V C
+0.8 70
0
Notes 1. VIH (MAX.) = VCC + 1.5 V (Pulse width 5 ns) 2. VIL (MIN.) = -1.5 V (Pulse width 5 ns) Pin Capacitance (TA = 25 C, f = 1 MHz)
Parameter Input capacitance Symbol CI1 CI2 Data input / output capacitance CI/O CLK A0 - A11, BA0(A13), BA1(A12), CKE, /CS, /RAS, /CAS, /WE, UDQM, LDQM DQ0 - DQ15 4 6.5 pF Condition MIN. 2.5 2.5 TYP. MAX. 3.5 3.8 Unit pF
32
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
DC Characteristics 1 (Recommended Operating Conditions unless otherwise noted)
Parameter Operating current Symbol ICC1 Test condition Burst length = 1, tRC tRC (MIN.), Io = 0 mA, One bank active Precharge standby current in power down mode Precharge standby current in non power down mode ICC2NS Active standby current in power down mode Active standby current in non power down mode ICC3NS Operating current (Burst mode) CBR (auto) refresh current ICC5 ICC4 ICC3P ICC3PS ICC3N ICC2P ICC2PS ICC2N CKE VIL (MAX.), tCK = 15 ns CKE VIL (MAX.), tCK = CKE VIH (MIN.), tCK = 15 ns, /CS VIH (MIN.), Input signals are changed one time during 30 ns CKE VIH (MIN.), tCK = , Input signals are stable CKE VIL (MAX.), tCK = 15 ns CKE VIL (MAX.), tCK = CKE VIH (MIN.), tCK = 15 ns, /CS VIH (MIN.), Input signals are changed one time during 30 ns CKE VIH (MIN.), tCK = , Input signals are stable tCK tCK (MIN.), Io = 0 mA, All banks active tRC tRC (MIN.) CKE 0.2 V CL = 2 CL = 3 CL = 2 CL = 3 Self refresh current ICC6 145 185 230 240 2 mA mA 3 mA 2 20 5 4 30 mA mA 8 1 1 20 mA mA /CAS latency CL = 2 CL = 3 Maximum x16 110 115 mA 1 Unit Notes
Notes 1. ICC1 depends on output loading and cycle rates. Specified values are obtained with the output open. In addition to this, ICC1 is measured condition that addresses are changed only one time during tCK (MIN.). 2. ICC4 depends on output loading and cycle rates. Specified values are obtained with the output open. In addition to this, ICC4 is measured condition that addresses are changed only one time during tCK (MIN.). 3. ICC5 is measured on condition that addresses are changed only one time during tCK (MIN.).
Data Sheet E0728N10 (Ver. 1.0)
33
PD45128163-E
DC Characteristics 2 (Recommended Operating Conditions unless otherwise noted)
Parameter Input leakage current Symbol II (L) Test condition 0 VI VCCQ, VCCQ = VCC All other pins not under test = 0 V 0 VO VCCQ, DOUT is disabled IO = -4 mA IO = +4 mA MIN. -1.0 -1.5 2.4 0.4 TYP. MAX. +1.0 Unit Note
A A
V V
Output leakage current High level output voltage Low level output voltage
IO (L) VOH VOL
+1.5
AC Characteristics (Recommended Operating Conditions unless otherwise noted) Test Conditions
Parameter AC high level input voltage / low level input voltage Input timing measurement reference level Transition time (Input rise and fall time) Output timing measurement reference level Value 2.4 / 0.4 1.4 1 1.4
tCK
tCH
CLK 2.4 V 1.4 V 0.4 V
tSETUP tHOLD
Unit V V ns V
tCL
Input
2.4 V 1.4 V 0.4 V
tAC
tOH
Output
34
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Synchronous Characteristics
Parameter Clock cycle time /CAS latency = 3 /CAS latency = 2 Access time from CLK /CAS latency = 3 /CAS latency = 2 CLK high level width CLK low level width Data-out hold time Data-out low-impedance time Data-out high-impedance time /CAS latency = 3 /CAS latency = 2 Data-in setup time Data-in hold time Address setup time Address hold time CKE setup time CKE hold time CKE setup time (Power down exit) Command (/CS, /RAS, /CAS, /WE, DQM) setup time Command (/CS, /RAS, /CAS, /WE, DQM) hold time Symbol tCK3 tCK2 tAC3 tAC2 tCH tCL tOH tLZ tHZ3 tHZ2 tDS tDH tAS tAH tCKS tCKH tCKSP tCMS tCMH 2.5 2.5 3 0 3 3 1.5 0.8 1.5 0.8 1.5 0.8 1.5 1.5 0.8 5.4 6 MIN. 7.5 10 MAX.
(133 MHz) (100 MHz)
Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
Note
5.4 6
1 1
1
Note 1. Output load
Data Sheet E0728N10 (Ver. 1.0)
35
PD45128163-E
Asynchronous Characteristics
Parameter ACT to REF/ACT command period (operation) REF to REF/ACT command period (refresh) ACT to PRE command period PRE to ACT command period Delay time ACT to READ/WRITE command ACT (one) to ACT (another) command period Data-in to PRE command period Data-in to ACT (REF) command period (Auto precharge) Mode register set cycle time Transition time Refresh time (4,096 refresh cycles) /CAS latency = 2 tDAL2 tRSC tT tREF /CAS latency = 3 Symbol tRC tRC1 tRAS tRP tRCD tRRD tDPL tDAL3 MIN. 67.5 67.5 45 20 20 15 8 1CLK +22.5 1CLK +20 2 0.5 30 64 CLK ns ms ns
120,000
MAX.
Unit ns ns ns ns ns ns ns ns
Note
1
Note 1. The -A75 grade device can satisfy the tDAL3 spec of 1CLK+20 ns for up to and including 125MHz operation.
36
Data Sheet E0728N10 (Ver. 1.0)
13.1 AC Parameters for Read Timing (Manual Precharge, Burst Length = 4, /CAS Latency = 3)
T0 tCK CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13
;;; ;; ; ;;;; ;; ; ;; ; ;;;; ;; ; ;; ; ;;;; ;; ; ;;; ; ; ;; ; ; ; ;; ; ;;; ;; ;; ;; ; ;;; ; ; ;; ; ;;; ; ; ;; ; ;;; ; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;; ; ; ; ;; ; ;; ; ; ; ;; ;; ; ; ; ;; ; ;; ; ; ; ;;; ; ;; ; ;; ;; ;;
tCH tCL CKE
tCKH
tCKS
tCMS tCMH
/CS
/RAS
/CAS
A10
ADD
tAS tAH
LDQM UDQM
L L
tAC
DQ
Hi-Z tRCD
; ; ;
tAC tAC tAC tHZ tOH tOH tOH tOH tRP
Precharge Command for Bank A Activate Command for Bank A
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
BA1
; ; ; ; ;
tLZ tRC
PD45128163-E
tRAS
Activate Command for Bank A
Read Command for Bank A
37
BA0
BA1
A10
ADD
tAS tAH
LDQM
L
UDQM
L
;; ;; ;; ;; ;;
tAC tAC tAC tAC tRCD tLZ tRAS tRRD tRC tOH tOH tOH Read with Auto Precharge Command for Bank C Activate Command for Bank D
38
Data Sheet E0728N10 (Ver. 1.0)
AC Parameters for Read Timing (Auto Precharge, Burst Length = 4, /CAS Latency = 3)
T0 tCK CLK tCH tCL T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13
;; ;; ;; ; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;; ;; ;; ;; ;; ;;; ; ;; ;;;;; ;; ;; ; ; ;;;;; ;; ; ;;; ; ;; ; ; ;; ; ;; ; ;;;;; ;; ; ;; ;;;;; ;; ;; ;; ;;; ;; ;; ;; ;;; ;; ;; ;; ;;; ; ;; ;; ;;; ; ;; ;; ;; ;;;; ;; ;; ; ;; ;;;; ;; ;; ; ;; ;;;; ;; ; ;; ; ;; ;;;; ;;;; ;; ; ;; ;;
CKE
tCKS
tCMS tCMH
Auto Precharge Start for Bank C
tCKH
/CS
/RAS
/CAS /WE
tHZ
DQ
Hi-Z
tOH
PD45128163-E
Activate Command for Bank C
Activate Command for Bank C
13.2 AC Parameters for Write Timing (Burst Length = 4, /CAS Latency = 3)
T0
CLK
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
T14
T15
T16
T17
T18
T19
T20
T21
;;;;; ;;;; ;;;;; ;;;; ;;;;; ;;;; ;;;;; ;;;;; ;;;;; ;;; ;;;;; ;; ; ;; ;;;; ;;; ;;; ; ;; ; ;;;; ; ;; ; ;; ; ;; ; ;; ; ;; ;; ;; ; ;; ; ;; ; ;; ; ;;; ; ; ;;; ;; ; ;;;;
CKE
tCKS
tCMS tCMH
Auto Precharge Start for Bank C
tCKH
/CS
/RAS
/CAS
/WE
BA0
BA1
A10
ADD
tAS tAH
LDQM
UDQM
L
L
tDS tDH DQ Hi-Z tRCD tRC tRRD
tRCD
tRAS tRC
Write with Activate Auto Precharge Command Command for Bank B for Bank C
;;; ;;;
tDAL
tDPL
Write Command for Bank B
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
tRP
Activate Command for Bank C
Activate Precharge Command Command for Bank C for Bank B
Activate Command for Bank B
39
PD45128163-E
13.3 Relationship between Frequency and Latency
Speed version Clock cycle time [ns] Frequency [MHz] /CAS latency [tRCD] /RAS latency (/CAS latency + [tRCD]) [tRC] [tRC1] [tRAS] [tRRD] [tRP] [tDPL] [tDAL] [tRSC] 7.5 133 3 3 6 9 9 6 2 3 2 4 2 -75 10 100 2 2 4 7 7 5 2 2 1 3 2
40
Data Sheet E0728N10 (Ver. 1.0)
13.4 Mode Register Set (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
CKE
H
tRSC
2 CLK (MIN.)
/CS
/RAS
/CAS
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
BA1
A10
ADDRESS KEY
ADD
LDQM
UDQM
Hi-Z
DQ
PD45128163-E
Precharge All Banks Command tRP
Mode Register Set Command
Activate Command is valid
41
42
Data Sheet E0728N10 (Ver. 1.0)
13.5 Power On Sequence and CBR (Auto) Refresh
CLK Clock cycle is necessary CKE High level is necessary tRSC 2 refresh cycles are necessary
;; ;; ; ; ; ; ;; ;;; ; ;; ;; ;;; ; ;; ;; ; ;; ;; ; ;; ;; ;;; ; ;; ;; ;;; ; ;; ; ;; ;;; ; ;; ;; ; ;; ;; ;;; ; ;; ; ;; ;;; ; ;; ;; ;; ; ;; ;; ;;; ; ;; ;; ;; ;;; ; ;; ;; ;; ;;; ; ;; ;; ;; ;;; ; ;; ;; ;;; ; ;; ;; ;; ;; ; ;; ;; ;;; ; ; ;; ;; ;; ; ;;; ; ;; ;; ; ;; ;;; ; ;; ;; ;; ;;; ; ;; ;; ; ;; ;
/CS /RAS /CAS /WE BA0 BA1 A10 ADDRESS KEY ADD LDQM UDQM High level is necessary Hi-Z DQ
PD45128163-E
Precharge All Banks Command is necessary tRP
Mode Register Set Command is necessary
CBR (Auto) Refresh Command is necessary tRC1
CBR (Auto) Refresh Command is necessary tRC1
Activate Command
13.6 /CS Function (Burst Length = 4, /CAS Latency = 3) Only /CS signal needs to be issued at minimum rate
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE
H
/CS
/RAS
/CAS
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
L
BA1
L
A10
RAa
ADD
RAa
CAa
CAb
LDQM UDQM DQ
L L Hi-Z
PD45128163-E
QAa1
QAa2 QAa3
QAa4
DAb1
DAb2
DAb3
DAb4
Activate Command for Bank A
Read Command for Bank A
Write Command for Bank A
Precharge Command for Bank A
43
44
Data Sheet E0728N10 (Ver. 1.0)
13.7 Clock Suspension during Burst Read (using CKE Function) (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE
;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ; ;; ; ;;; ; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;;; ;;; ;; ;; ;;; ;; ;; ;; ; ;;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;;
/CS /RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa LDQM L UDQM L Hi-Z DQ
PD45128163-E
QAa1
QAa2
QAa3
QAa4
Activate Command for Bank A
Read Command for Bank A
1-CLOCK SUSPENDED
2-CLOCK SUSPENDED
3-CLOCK Hi-Z (turn off) SUSPENDED at the end of burst
Clock Suspension during Burst Read (using CKE Function) (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE
;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ;; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ; ;;;; ;; ;; ;; ;; ; ;;;; ;; ;;; ;; ;; ;;; ;; ; ;; ;; ;;;; ;; ;; ;; ;;;; ;; ;;
/CS /RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa LDQM L UDQM L Hi-Z DQ
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
QAa1
QAa2
QAa3
QAa4
Activate Command for Bank A
Read Command for Bank A
1-CLOCK SUSPENDED
2-CLOCK SUSPENDED
3-CLOCK SUSPENDED
Hi-Z (turn off) at the end of burst
45
46
Data Sheet E0728N10 (Ver. 1.0)
13.8 Clock Suspension during Burst Write (using CKE Function) (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE
;; ; ;; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ; ;;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ;; ;;; ;; ;; ;; ; ;; ; ; ;; ;; ;; ;;; ; ;; ;; ;;; ;; ;; ;;; ; ;; ;; ; ;; ;; ;;; ; ;; ; ; ;
/CS /RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa LDQM L UDQM L DQ Hi-Z DAa1 DAa2 DAa3 DAa4
PD45128163-E
Activate Command for Bank A
Write 1-CLOCK Command SUSPENDED for Bank A
2-CLOCK SUSPENDED
3-CLOCK SUSPENDED
Clock Suspension during Burst Write (using CKE Function) (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE
;; ; ;;; ; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;;; ; ; ;; ;; ;; ; ;;; ; ; ;; ;; ;; ; ;;; ; ; ;; ;; ;; ; ; ;;; ; ; ;; ;; ;; ; ;;; ; ; ;; ;; ;; ;; ;; ; ; ;; ;; ;;; ; ; ;; ;;; ;; ;; ; ;;; ; ; ;; ;; ;; ; ;;; ; ;; ; ;; ;; ;;; ;; ; ;;; ;; ; ;;; ;; ;; ;;; ;;; ;; ;; ;;
/CS /RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa LDQM L UDQM L Hi-Z
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
DQ
DAa1
DAa2
DAa3
DAa4
Activate Command for Bank A
Write 1-CLOCK Command SUSPENDED for Bank A
2-CLOCK SUSPENDED
3-CLOCK SUSPENDED
47
48
Data Sheet E0728N10 (Ver. 1.0)
13.9 Power Down Mode and Clock Mask (Burst Length = 4, /CAS Latency = 2)
T0 CLK tCKSP CKE VALID /CS tCKSP T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ; ;; ;; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ;; ;; ; ; ;;; ;; ;; ; ; ;;; ; ;; ; ; ;; ; ;; ;; ; ;;; ;;; ;; ;;; ; ; ;; ; ; ;;; ;;; ; ; ;; ; ;;; ;;; ; ; ;; ; ;;; ;;; ;; ;; ; ; ;; ;;; ;; ;; ; ;;; ;; ;; ; ;
/RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa LDQM L UDQM L Hi-Z DQ QAa1 QAa2 QAa3 QAa4
PD45128163-E
Activate Command for Bank A Power Down Mode Entry
Read Command for Bank A Power Down Mode Exit Clock Mask Start Clock Mask End
Precharge Command for Bank A Power Down Mode Entry PRECHARGE STANDBY Power Down Mode Exit
ACTIVE STANDBY
;; ;;; ;; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;; ;;; ;; ;; ;; ; ;; ;; ;; ;; ;; ;; ;; ; ; ;; ;; ;; ;; ;; ;; ; ;; ;; ; ;; ;; ;; ; ;; ; ; ;;
PD45128163-E
Q1 Activate Command Read Command CBR (Auto) Refresh Precharge CBR (Auto) Refresh Command (if necessary)
UDQM
Tn + 3 Tn + 4 Tn + 5 Tn + 6
Tm
Tm + 1 Tm + 2 Tm + 3 Tm + 4 Tm + 5 Tm + 6 Tm + 7
Tn
Tn + 1 Tn + 2
T2
T3
T4
T5
13.10 CBR (Auto) Refresh
T1
BA0
LDQM
/RAS
/CAS
ADD
CKE
CLK
BA1
/WE
A10
/CS
L
DQ
Hi-Z
T0
H
L
Data Sheet E0728N10 (Ver. 1.0)
tRP
tRC1
T6
tRC1
49
50
Data Sheet E0728N10 (Ver. 1.0)
13.11 Self Refresh (Entry and Exit)
T0 T1 T2 T3 T4 Tn Tn + 1 Tn + 2 Tm Tm + 1 Tk Tk + 1 Tk + 2 Tk + 3 Tk + 4
; ;; ;; ;; ;; ;;; ; ; ;; ;; ;; ; ;; ;;; ; ; ; ;; ;; ;; ;;; ; ; ;; ;; ;; ;; ;; ;; ;;; ; ; ;; ;;; ;;; ; ; ; ;; ;;; ;;; ; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ; ;; ;;; ; ; ;; ;; ;;; ; ; ; ;; ;;; ;;; ; ; ;;;; ; ; ;; ;;; ; ;;;; ; ; ;; ;;; ;; ;; ;; ;; ;; ;;; ;;; ; ;;; ; ; ;; ;; ; ;;; ; ; ;; ;; ; ;; ;;; ; ;; ;; ; ; ;;
CLK CKE /CS /RAS /CAS /WE
BA0
BA1
A10
ADD
LDQM
L
UDQM
L
Hi-Z
DQ
PD45128163-E
Precharge Command (if necessary)
Self Refresh Entry
Self Refresh Exit
Self Refresh Self Refresh Entry Exit (or Activate Command) Next Clock Enable
Activate Command
Next Clock Enable
tRP
tRC1
tRC1
13.12 Random Column Read (Page with Same Bank) (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ; ;;; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ; ; ;;;; ; ;; ; ;; ;;;; ; ; ; ;; ;; ;; ;;;; ; ; ; ;; ;; ; ;; ;; ;;;; ; ;; ; ;; ; ;; ;; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;; ;; ; ;; ;;; ;;;; ; ;;; ; ;; ; ;; ; ; ;;; ; ;; ;; ; ;; ;; ;;;; ; ; ; ;; ;; ;;;; ; ;; ; ; ;; ;; ;; ;;;; ; ;; ; ;; ;; ;;;; ; ;; ;;; ; ;; ; ;; ; ;; ;; ;;;; ; ;; ;;; ; ; ;; ;; ;; ;;;; ;
CLK CKE
H
/CS
/RAS
/CAS
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
BA1
A10
RAa
RAd
ADD
RAa
CAa
CAb
CAc
RAd
CAd
LDQM
L
UDQM
L
Hi-Z
DQ
QAa1
QAa2
QAa3
QAa4
QAb1
QAb2
QAc1
QAc2
QAc3
QAc4
QAd1
QAd2
QAd3
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Read Command for Bank A
Read Command for Bank A
Precharge Command for Bank A
Activate Command for Bank A
Read Command for Bank A
51
52
Data Sheet E0728N10 (Ver. 1.0)
Random Column Read (Page with Same Bank) (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ; ; ; ;;;; ; ;; ;;;; ; ;; ;; ;;;; ; ;; ;; ; ;;;; ; ;; ;; ;; ;;;; ; ;; ;; ;;;; ; ;; ;; ; ;; ;; ;;;; ; ;; ;;; ;; ; ;;;; ; ;; ;; ;;;; ; ; ; ;; ;; ;;; ; ;;; ;; ;;;; ; ;; ; ; ;;; ;;; ;; ; ;;;; ; ;; ;; ; ; ;;;; ; ; ;; ; ; ; ;; ; ;;;; ; ;;; ; ;; ; ; ; ;; ; ;;;; ; ;; ; ;; ; ;;;; ; ;; ; ;; ; ;; ; ;;;; ; ; ;; ;; ; ;;;; ;
CLK CKE
H
/CS
/RAS
/CAS
/WE
BA0
BA1
A10
RAa
RAa
ADD
RAa
CAa
CAb
CAc
RAa
CAa
LDQM
L
UDQM
L
Hi-Z
DQ
QAa1
QAa2
QAa3
QAa4
QAb1
QAb2
QAc1
QAc2
QAc3
QAc4
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Read Command for Bank A
Read Command for Bank A
Precharge Command for Bank A
Activate Command for Bank A
Read Command for Bank A
13.13 Random Column Write (Page with Same Bank) (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ; ; ;; ; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ; ;; ;; ;;;; ; ;; ;;; ;; ;;;; ; ; ;; ;;; ;; ; ;; ; ;; ;; ;;;; ; ;; ; ;; ;; ;;;; ; ;;; ;; ; ;; ; ;; ;; ;;;; ; ;; ; ;; ;; ;;;; ; ;; ; ;; ; ;;; ; ;; ; ; ; ;;;; ; ;; ; ;;; ; ;;; ; ; ;; ; ; ;; ;;;; ; ;; ;; ; ; ; ;; ;; ;;;; ; ;; ; ; ; ; ;; ;; ;;;; ; ;; ; ; ; ;; ;;;; ; ;; ; ;; ;;; ; ; ;; ;; ;; ;; ;; ;;;; ; ;; ;; ;;; ; ; ;; ;; ;; ;;;; ;
CLK CKE
H
/CS
/RAS
/CAS
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
BA1
A10
RDa
RDd
ADD
RDa
CDa
CDb
CDc
RDd
CDd
LDQM
L
UDQM
L
DQ
Hi-Z
DDa1
DDa2
DDa3
DDa4
DDb1
DDb2
DDc1
DDc2
DDc3
DDc4
DDd1
DDd2
DDd3
DDd4
PD45128163-E
Activate Command for Bank D
Write Command for Bank D
Write Command for Bank D
Write Command for Bank D
Precharge Command for Bank D
Activate Command for Bank D
Write Command for Bank D
53
54
Data Sheet E0728N10 (Ver. 1.0)
Random Column Write (Page with Same Bank) (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ;;; ; ;; ; ;; ;; ;; ; ;; ;;;; ; ;; ;;;; ; ; ;; ;; ;; ; ;; ;;;; ; ;; ;; ;;;; ; ;; ;; ;; ;;;; ; ;; ;; ;; ;;;; ; ;; ; ;;;; ; ;; ; ;; ;; ; ;; ;; ;;;; ; ;;; ;;; ;; ;; ;; ; ;;;; ; ;;; ;; ;; ; ; ; ; ;;;; ; ;; ; ; ; ; ;;;; ; ;; ; ; ; ;; ; ;;;; ; ;; ; ; ;; ; ;;;; ; ; ; ;; ;; ;;;; ; ;;; ;; ;; ;; ;;;; ; ; ;;;; ; ;; ; ; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RDa RDd ADD RDa CDa CDb CDc RDd CDd LDQM L UDQM L
PD45128163-E
DQ
Hi-Z
DDa1
DDa2
DDa3
DDa4
DDb1
DDb2
DDc1
DDc2
DDc3
DDc4
DDd1 DDd2
Activate Command for Bank D
Write Command for Bank D
Write Command for Bank D
Write Command for Bank D
Precharge Command for Bank D
Activate Command for Bank D
Write Command for Bank D
13.14 Random Row Read (Ping-Pong Banks) (1/2) (Burst Length = 8, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ; ; ;;; ;; ; ; ;; ; ; ; ;; ; ; ;;; ;; ;; ;; ;;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ; ;; ; ; ; ;;; ;; ;; ;; ;; ;;;; ; ;;; ; ;; ; ; ; ; ;;; ;; ;; ; ; ; ;; ; ; ;; ; ; ;;; ;; ;; ;; ;;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ;; ; ; ; ; ; ; ; ;;; ;; ;; ;; ;; ;; ;;; ;; ;; ;; ;; ;; ;;; ;; ; ;; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RDa RBa RDb ADD RDa CDa RBa CBa RDb CDb LDQM L UDQM L Hi-Z QDa1 QDa2 QDa3 QDa4 QDa5 QDa6 QDa7 QDa8 QBa1 QBa2 QBa3 QBa4 QBa5 QBa6 QBa7 QBa8 DQ
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank D
Read Command for Bank D
Activate Command for Bank B
Read Command for Bank B Precharge Command for Bank D
Activate Command for Bank D
Read Command for Bank D
55
56
Data Sheet E0728N10 (Ver. 1.0)
Random Row Read (Ping-Pong Banks) (2/2) (Burst Length = 8, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ; ;; ;;; ;;;; ; ;; ;; ;; ;;;; ; ;;;; ; ; ;; ;; ;;;;;; ;;; ;;;; ; ;;;;;; ; ;; ;; ;;;; ;;;;;; ;; ;;;; ;;;;;; ;;; ;; ;; ;;;;; ; ;; ;; ;;;;;; ;;;;; ;; ;; ;; ;;; ;;;;;; ;;; ;; ;;;; ; ; ;; ; ; ;;;; ;;;;;; ;; ;;; ;;;; ; ;; ;;;;;; ;;; ;;;; ;;;;;; ;; ;;;; ;;;;;; ;; ;; ;; ;;;;; ;; ;; ;;;;;; ;;;; ;;;; ;; ;; ;;;;;; ;;;;; ;; ;; ;;; ;;;;;; ;;; ;;;; ;;;;;; ;;;; ;;;; ;;;
CLK CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RBa RAa RBb ADD RBa CBa RAa CAa RBb CBb LDQM L UDQM L Hi-Z DQ QBa1 QBa2 QBa3 QBa4 QBa5 QBa6 QBa7 QBa8 QAa1 QAa2 QAa3 QAa4 QAa5 QAa6 QAa7
PD45128163-E
Activate Command for Bank B
Read Command for Bank B
Activate Command for Bank A
Read Command for Bank A
Precharge Command for Bank B
Activate Command for Bank B
Read Command for Bank B
Precharge Command for Bank A
13.15 Random Row Write (Ping-Pong Banks) (1/2) (Burst Length = 8, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ;; ;; ;; ;;; ;; ;; ;; ;; ;;; ;; ;; ;;; ;; ;; ;; ; ;; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ;;; ;; ;; ;; ; ; ;; ;; ;;; ;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;; ; ;;; ;; ;;; ; ; ;; ;; ; ;; ;;; ;; ;; ;; ;; ; ;; ;;; ;; ; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;; ;;; ; ;; ;; ;; ;; ; ;;;; ;; ;; ;; ; ;; ;; ;; ;; ; ;; ;; ;;;; ;; ; ;; ; ;; ;; ; ;;;; ;;; ;; ;; ;; ; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RAb ADD RAa CAa RDa CDa RAb CAb LDQM L UDQM L DQ Hi-Z DAa1 DAa2 DAa3 DAa4 DAa5 DAa6 DAa7 DAa8 DDa1 DDa2 DDa3 DDa4 DDa5 DDa6 DDa7 DDa8 DAb1 DAb2 DAb3
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank A
Write Command for Bank A
Activate Command for Bank D
Write Command for Bank D Precharge Command for Bank A
Activate Command for Bank A
Write Command for Bank A Precharge Command for Bank D
57
58
Data Sheet E0728N10 (Ver. 1.0)
Random Row Write (Ping-Pong Banks) (2/2) (Burst Length = 8, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ; ;; ; ;; ;;; ;;; ;;;;; ; ;;;;; ;;;;;; ;;;; ;; ;;; ;;;; ;; ;; ;; ; ;; ;; ; ; ;; ;; ;; ;; ;; ;; ; ;; ;;;; ;; ;;; ;; ;; ; ;;; ; ; ;;; ;;; ;;;;;; ;;; ;;;;; ;;;; ;; ; ; ;;;;; ;;;; ;; ;;; ;;; ; ;;; ; ; ;; ;; ;; ;; ;;; ; ;; ; ;; ;; ;; ;;; ; ;; ; ;;; ; ;; ;; ;; ;; ;;; ; ;; ; ; ;; ;; ;; ;;;; ;; ; ;; ; ;; ;; ;; ;; ;; ;; ;; ;; ;; ;;;; ;;; ;; ;; ;; ; ; ;;;; ;; ; ;; ;; ;; ;; ; ;; ; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RAb ADD RAa CAa RDa CDa RAb CAb LDQM L UDQM L DQ Hi-Z DAa1 DAa2 DAa3 DAa4 DAa5 DAa6 DAa7 DAa8 DDa1 DDa2 DDa3 DDa4 DDa5 DDa6 DDa7 DDa8 DAb1 DAb2
PD45128163-E
Activate Command for Bank A
Write Command for Bank A
Activate Command for Bank D
Write Command for Bank D
Precharge Command for Bank A
Activate Command for Bank A
Write Command for Bank A
Precharge Command for Bank D
13.16 Read and Write (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
CKE
H
; ;; ; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;;; ; ; ;; ;; ;; ; ;; ;; ;;; ; ;;; ; ;;; ; ; ;; ; ;; ;; ;;; ; ; ;; ;; ;; ;;; ; ; ;; ;; ;; ;;; ; ; ;; ;; ;; ;;; ; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;; ;; ;;; ; ; ;; ;;; ; ; ;; ;; ; ;;
/CS /RAS /CAS /WE
BA0
Data Sheet E0728N10 (Ver. 1.0)
BA1
A10
RAa
ADD
RAa
CAa
CAb
CAc
Write Latency = 0
LDQM
L
Word Masking
UDQM
L
Word Masking
DQ (lower)
Hi-Z
QAa1
QAa2
QAa3
QAa4
DAb1
DAb2
DAb4
QAc1 QAc2
QAc4
DQ (Upper)
Hi-Z
PD45128163-E
QAa1
QAa2
QAa3
QAa4
DAb1
DAb2
DAb4
QAc1
QAc2
QAc4
Activate Command for Bank A
Read Command for Bank A
Write Command for Bank A
Read Command for Bank A
59
Hi-Z at the end of wrap function
0-Clock Latency
2-Clock Latency
60
Data Sheet E0728N10 (Ver. 1.0)
Read and Write (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ;; ; ; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ; ;; ;; ; ;; ;; ;;;; ; ;;; ;; ; ;; ;; ;;;; ; ; ;; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;; ; ;; ;; ;; ; ;; ;;;; ; ;; ;; ; ;; ;;;; ; ; ;; ;; ;; ;;; ;; ;; ;;;; ; ;; ;; ;; ; ; ;; ;
CLK CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa ADD RAa CAa CAb CAc LDQM Write Latency = 0 L Word Masking UDQM DQ (lower) DQ (upper) L Hi-Z Hi-Z QAa1 QAa1 QAa2 QAa2 QAa3 QAa3 QAa4 QAa4 DAb1 DAb1 DAb2 DAb2 DAb4 DAb4 QAc1 QAc1 QAc2 QAc2
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Write Command for Bank A Hi-Z at the end of wrap function 0-Clock Latency
Read Command for Bank A 2-Clock Latency
13.17 Interleaved Column Read Cycle (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
CKE
H
/CS
; ;; ;; ;;; ;; ;; ;; ; ;;; ; ;; ; ;; ;; ; ; ; ;; ;; ; ;; ;; ; ; ;; ; ;; ;;; ;; ;;; ;; ; ;; ;; ;; ;; ;; ; ;; ; ; ;; ;;; ;; ; ; ;; ;; ;; ;; ;;; ;;; ;;; ;; ;; ; ; ;; ; ; ; ;;; ;; ; ;; ; ;;; ;;; ; ; ;; ;; ; ; ;; ; ;; ; ;; ;; ; ;; ;; ; ;; ; ;; ;; ; ; ;; ;; ; ;; ; ;; ;; ; ;; ;;; ; ;; ; ;; ; ;; ;;; ; ;; ;; ; ;; ; ; ;; ;; ;; ; ;;; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;
/RAS /CAS /WE
BA0
Data Sheet E0728N10 (Ver. 1.0)
BA1
A10
RAa
RDa
ADD
RAa
CAa
RDa
CDa
CDb
CDc
CAb
CDd
LDQM
UDQM
L
L
Hi-Z
DQ
Aa1
Aa2
Aa3
Aa4
Da1
Da2
Db1
Db2
Dc1
Dc2
Ab1
Ab2
Dd1
Dd2
Dd3
Dd4
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Activate Command for bank D
Read Command for Bank D
Read Command for Bank D
Read Command for Bank D
Read Command for Bank A
Read Command for Bank D Precharge Command for Bank A
Precharge Command for Bank D
61
62
Data Sheet E0728N10 (Ver. 1.0)
Interleaved Column Read Cycle (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ;; ;; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;; ;;; ;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;; ;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;; ;; ; ;;; ; ;; ;; ;; ; ;; ; ;; ;; ;;;; ;; ;; ; ;; ;; ; ;; ; ; ;; ;; ; ;; ;; ;;;; ;; ;; ;; ; ;; ; ;; ; ; ;;; ; ;; ; ;; ; ; ;; ; ;; ; ;; ;;; ;; ;; ;; ;; ; ;;; ;; ;; ;; ;; ; ;;; ;; ;; ; ;;; ;; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa ADD RAa CAa RDa CDa CDb CDc CAb LDQM L UDQM L DQ Hi-Z Aa1 Aa2 Aa3 Aa4 Da1 Da2 Db1 Db2 Dc1 Dc2 Ab1 Ab2 Ab3 Ab4
PD45128163-E
Activate Command for Bank A
Read Command for Bank A Activate Command for Bank D
Read Command for Bank D
Read Command for Bank D
Read Command for Bank D
Read Command for Bank A Precharge Command for Bank D Precharge Command for Bank A
13.18 Interleaved Column Write Cycle (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ; ;; ;; ; ;;;; ; ;; ; ;;;; ; ; ;;;; ; ; ; ;;;; ; ;; ; ; ;;;; ; ; ;;;; ; ; ; ;;;; ; ;;; ;; ;; ;; ; ;;;; ; ;; ;;; ; ;; ;;; ;;;; ; ;; ;; ;; ;;; ; ;; ;;; ;;;; ; ;; ; ;; ; ;; ;;; ;;;; ; ; ; ;; ;;;; ; ; ;; ;;;; ; ;; ;;; ; ; ; ;;;; ; ;; ; ;; ; ;; ;;;; ; ;;; ;; ;; ; ;;;; ; ; ;; ; ; ; ;; ; ; ;
CLK CKE
H
/CS
/RAS
/CAS
Data Sheet E0728N10 (Ver. 1.0)
/WE
BA0
BA1
A10
RAa
RBa
ADD
RAa
CAa
RBa
CBa
CBb
CBc
CAb
CBd
LDQM
L
UDQM
L
Hi-Z
DQ
Aa1
Aa2
Aa3
Aa4
Ba1
Ba2
Bb1
Bb2
Bc1
Bc2
Ab1
Ab2
Bd1
Bd2
Bd3
Bd4
PD45128163-E
Activate Command for Bank A
Write Command for Bank A
Activate Command for Bank B
Write Command for Bank B
Write Command for Bank B
Write Command for Bank B
Write Command for Bank A
Write Command for Bank B
Precharge Command for Bank A Precharge Command for Bank B
63
BA0
BA1
A10
RAa
RBa
ADD
RAa
CAa
RBa
CBa
CBb
CBc
CAb
LDQM
L
UDQM
L
DQ
Hi-Z
Aa1
Aa2
Aa3
Aa4
Ba1
Ba2
Bb1
Bb2
Bc1
Bc2
Ab1
; ;
CBd
64
Data Sheet E0728N10 (Ver. 1.0)
Interleaved Column Write Cycle (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
;;; ;; ;; ;;;; ;; ; ;; ;;;; ;;; ;; ; ; ;; ;; ;; ; ;; ; ;; ;; ;; ;;;; ; ;;; ;;; ;;; ;;;; ;; ;;;; ;; ; ;; ;; ;; ; ;; ;; ;; ;;;; ;; ;;; ; ;; ;;; ;; ; ;; ; ;;;; ; ;; ; ; ;; ;; ;; ;; ; ;; ; ; ;; ;; ; ;; ;;;; ; ;; ;; ; ; ;; ;; ;;; ;; ;;;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ;; ;; ;; ;;; ;; ;; ;; ; ;; ;; ; ;; ;; ; ;;; ;; ;; ;; ; ;; ;; ;; ; ;; ;; ;; ;;; ;; ;;
CKE
H
/CS
/RAS
/CAS
/WE
Ab2
Bd1
Bd2
Bd3
Bd4
PD45128163-E
Activate Command for Bank A
Write Command for Bank A Activate Command for Bank B
Write Command for Bank B
Write Command for Bank B
Write Command for Bank B
Write Command for Bank A
Write Command for Bank B Precharge Command for Bank A Precharge Command for Bank B
13.19 Auto Precharge after Read Burst (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;;; ;; ; ; ;; ;; ;;;; ;; ;; ;; ;; ;; ; ; ;; ;; ;;;; ; ; ; ;; ; ; ;; ;; ;;; ; ;; ; ;; ; ; ;; ; ; ;; ; ;; ;;; ; ;; ; ;; ;; ; ; ;; ; ;;; ; ;; ; ;; ;; ;; ;;; ;; ; ; ;; ;; ;; ;; ;;;; ;; ; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ; ; ;; ;; ;; ;; ; ;; ;; ;; ;; ;;; ; ;; ; ;; ; ;; ; ;; ;; ;;; ; ;; ; ; ;; ;; ;; ; ;; ; ;; ;;;; ;; ;; ; ;; ;; ;; ;;;; ;; ; ;; ;; ; ;;; ;; ;; ; ;; ;; ;;;; ;;; ;; ;; ;; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb RAc ADD RAa CAa RDa CDa CAb RDb CDb RAc CAc LDQM L UDQM L DQ Hi-Z
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Activate Command for Bank D
Read with Auto Precharge Command for Bank D
Read with Auto Precharge Command for Bank A Auto Precharge Start for Bank D
Activate Command for Bank D
Activate Command Read with Read with for Bank A Auto Precharge Auto Precharge Command Command for Bank A for Bank D Auto Precharge Auto Precharge Start for Bank A Start for Bank D
65
66
Data Sheet E0728N10 (Ver. 1.0)
Auto Precharge after Read Burst (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ;; ; ;;;; ; ;; ;; ;;;; ; ;; ;; ;;;; ; ;; ;; ;;;; ; ;; ;; ; ;; ;;;; ; ;; ; ; ;; ;;;; ; ;; ; ;; ;; ;;;; ; ;; ;; ;;; ;; ;;;; ; ;; ; ; ;; ;;;; ; ;; ; ;; ;;;; ; ;; ;; ;; ;;;; ; ;; ;; ; ;;;; ; ;; ;; ;;;; ; ;; ;; ; ;;;; ; ;; ;; ;; ; ; ;;;; ; ; ;; ;; ;; ;;; ; ;; ;;;; ; ;; ; ;;
CLK CKE
H
/CS
/RAS /CAS
/WE
BA0
BA1
A10
RAa
RDa
RDb
ADD
RAa
CAa
RDa
CDa
CAb
RDb
CDb
LDQM
L
UDQM
L
DQ
Hi-Z
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Read Command for Bank A Read with Auto Precharge Command for Bank D
Read with Auto Precharge Command for Bank A Auto Precharge Start for Bank D
Activate Command for Bank D
Read with Auto Precharge Command for Bank D
Auto Precharge Start for Bank A
13.20 Auto Precharge after Write Burst (1/2) (Burst Length = 4, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;;; ;; ; ;; ;;;; ;; ; ; ;; ;; ;;;; ;; ; ; ;; ;; ;;;; ;; ; ; ;; ;; ;;;; ;; ; ; ;; ;; ;; ;;; ; ;; ;;;; ; ;; ; ;; ; ; ;; ;;; ; ; ;; ; ; ; ;; ;; ; ;; ;;; ; ;; ; ; ;; ;; ;; ; ;;;; ;; ; ; ;; ;; ;; ; ;; ; ;;; ; ;; ;; ;; ;;;; ;;; ;; ;; ;;;; ;; ; ; ;; ;; ;;;; ; ;; ;; ;; ;; ; ;; ;; ;; ; ; ;; ;;; ;; ;; ;; ; ;; ;; ;; ;;;; ;; ; ; ;; ;; ;; ;; ;;;; ;; ; ;;; ;; ;; ; ;;;; ;;; ;; ;; ;; ;; ; ;;; ;; ;; ;;;; ;;; ;; ;; ; ;; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb RAc ADD RAa CAa RDa CDa CAb RDb CDb RAc CAc LDQM L UDQM L DQ Hi-Z
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank A Write Command for Bank A
Activate Command for Bank D Write with Auto Precharge Command for Bank D Write with Auto Precharge Command for Bank A
Activate Command for Bank D
Activate Command for Bank A
Write with Write with Auto Precharge Auto Precharge Command Command for Bank D for Bank A Auto Precharge Auto Precharge Auto Precharge Start for Bank D Start for Bank A Start for Bank D
67
68
Data Sheet E0728N10 (Ver. 1.0)
Auto Precharge after Write Burst (2/2) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;;; ;; ; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;; ; ;;; ; ;; ;;;; ;; ; ;; ;; ;;;; ;; ;; ; ;; ; ; ;; ;; ;;;; ;; ; ;; ;; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;; ; ;;; ;; ;; ;;;; ; ;;; ;; ;; ; ;;;; ;; ; ;; ;; ;;;; ;; ; ;;; ;; ;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;;;; ;; ; ;; ;; ;; ; ;;; ;; ;; ;;;; ;; ; ;; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb ADD RAa CAa RDa CDa CAb RDb CDb LDQM UDQM L L Hi-Z DQ
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Write Command for Bank A Write with Auto Precharge Command for Bank D
Write with Auto Precharge Command for Bank A
Activate Command for bank D
Auto Precharge Start for Bank D
Auto Precharge Start for Bank A
Write with Auto Precharge Command for Bank D
13.21 Full Page Read Cycle (1/2) (/CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 Tn Tn + 1 Tn + 2 Tn + 3 Tn + 4 Tn + 5 Tn + 6 Tn + 7 Tn + 8 Tn + 9 Tn + 10 Tn + 11 Tn + 12 Tn + 13
;;; ; ; ;;;; ; ;; ; ;; ; ;;;; ; ;; ; ;; ; ;;;; ; ; ; ;; ;; ; ; ;;;; ; ;; ; ;; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;; ;; ;;;; ; ;;; ;; ;; ; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;; ;; ;; ; ;;;; ; ; ; ;; ;; ; ;;;; ; ;; ;; ; ; ;;;; ; ; ;;; ;; ;; ;; ; ; ;;;; ; ;; ; ; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb ADD RAa CAa RDa CDa RDb LDQM L UDQM L Hi-Z DQ Aa Aa+1 Aa+2
Aa+m-2 Aa+m-1
Data Sheet E0728N10 (Ver. 1.0)
Aa
Aa+1
Da
Da+1
Da+2
Da+3
Da+4
Da+5
Da+6
PD45128163-E
Activate Command for Bank A
Read Command for Bank A
Activate Command for Bank D
Read Command for Bank D
Burst Stop Command
Precharge Command for Bank D
Activate Command for Bank D
69
Note: m is Full page burst length.
70
Data Sheet E0728N10 (Ver. 1.0)
Full Page Read Cycle (2/2) (/CAS latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 Tn Tn + 1 Tn + 2 Tn + 3 Tn + 4 Tn + 5 Tn + 6 Tn + 7 Tn + 8 Tn + 9 Tn + 10 Tn + 11 Tn + 12
;;; ;; ; ;;; ; ;; ; ; ;;; ; ;; ; ;;; ; ;; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;; ;; ; ; ;;; ; ;; ; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb ADD RAa CAa RDa CDa RDb LDQM UDQM L L Hi-Z DQ Aa Aa+1
Aa+m-3 Aa+m-2 Aa+m-1
Aa
Aa+1
Da
Da+1
Da+2
Da+3
Da+4
Da+5
PD45128163-E
Activate Command for Bank A Note: m is Full page burst length.
Read Command for Bank A
Activate Command for Bank D
Read Command for Bank D
Burst Stop Command
Precharge Command for Bank D
Activate Command for Bank D
13.22 Full Page Write Cycle (1/2) (/CAS latency = 2)
T0 CLK T1 T2 T3 T4 T5 Tn Tn + 1 Tn + 2 Tn + 3 Tn + 4 Tn + 5 Tn + 6 Tn + 7 Tn + 8 Tn + 9 Tn + 10 Tn + 11 Tn + 12 Tn + 13 Tn + 14 Tn + 15
;;; ;;; ; ;; ;;; ; ;;; ; ;; ;; ;;; ; ;; ;; ;; ;; ;; ;;; ; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;; ;; ;; ;; ;;; ; ;;; ; ;; ;; ;;; ; ;;; ; ;; ;; ;;; ; ;;; ; ; ;; ; ;; ;;; ; ;;; ; ;; ;; ;;; ;; ;; ; ;; ; ;; ;;; ; ; ;;; ; ;; ;; ;;;; ;; ; ;;; ;; ;; ;;;; ;;; ;; ;; ;; ; ;;;; ;;; ;; ;; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb ADD RAa CAa RDa CDa RDb LDQM L UDQM L DQ Hi-Z Aa Aa+1 Aa+2
Aa+m-2
Data Sheet E0728N10 (Ver. 1.0)
Aa+m-1
Aa
Aa+1
Da
Da+1
Da+2
Da+3
Da+4
Da+5
PD45128163-E
Activate Command for Bank A
Write Command for Bank A
Activate Command for Bank D
Write Command for Bank D Burst Stop Command
Precharge Command for Bank D Activate Command for Bank D
71
Note: m is Full page burst length.
72
Data Sheet E0728N10 (Ver. 1.0)
Full Page Write Cycle (2/2) (/CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 Tn Tn + 1 Tn + 2 Tn + 3 Tn + 4 Tn + 5 Tn + 6 Tn + 7 Tn + 8 Tn + 9 Tn + 10 Tn + 11 Tn + 12 Tn + 13
;; ;;; ;; ; ; ;; ;; ;;; ; ; ;; ; ;;; ; ; ;; ; ; ; ;;; ; ; ;; ; ;; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ;; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;; ;; ; ;;; ; ;; ; ; ;;; ; ;; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa RDb ADD RAa CAa RDa CDa RDb LDQM UDQM L L Hi-Z DQ Aa Aa+1 Aa+2 Aa+3
Aa+m-1
Aa
Aa+1
Da
Da+1
Da+2
Da+3
Da+4
Da+5
PD45128163-E
Activate Command for Bank A
Write Command for Bank A
Activate Command for Bank D
Write Command for Bank D Burst Stop Command Burst is not completed in the Full Page Mode
Precharge Command for Bank D
Activate Command for Bank D
Note: m is Full page burst length.
13.23 Byte Write Operation (Burst Length = 4, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
CKE /CS
;; ; ; ;; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ; ;;;; ;;;; ;;; ; ;;; ;; ; ;;;; ; ;;; ;; ; ; ;;;; ; ;; ;;; ;;; ;; ; ;
/RAS /CAS /WE BA0
BA1
Data Sheet E0728N10 (Ver. 1.0)
A10
ADD
LDQM
UDQM
DQ (lower)
PD45128163-E
DQ (upper)
Activate Command for Bank D
Read Command for Bank D
Upper Byte not Read
Lower Byte Upper Byte Lower Byte not Write not Write not Write
73
74
Data Sheet E0728N10 (Ver. 1.0)
Byte Write Operation (Burst Length = 4, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
CKE /CS
;; ; ; ;; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;;; ;;;; ; ; ;;;;; ;;; ; ;; ;;;; ;;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ;; ; ; ;;;; ;;; ; ; ;;;; ;;; ; ; ;;;; ; ;;;; ;; ;;; ;;; ; ; ;;;; ;; ;;; ; ; ;;;; ; ;; ;;; ;;; ;; ; ;
/RAS /CAS /WE BA0
BA1
A10
ADD
LDQM
UDQM
DQ (lower)
PD45128163-E
DQ (upper)
Activate Command for Bank D
Read Command for Bank D
Upper Byte not Read
Lower Byte not Read
Lower Byte not Write
Upper Byte not Write
Lower Byte not Write
Read Command for Bank D
Lower Byte not Read
Lower Byte not Read
13.24 Burst Read and Single Write (Option) (Burst Length = 4, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE /CS
H
;; ; ; ;;; ;; ; ;; ;; ;; ;; ; ;;; ;; ;; ;; ;; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ;;; ; ;; ;; ;; ; ;; ;;; ; ;; ;; ;; ; ;;; ; ;; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ; ;; ; ; ;;; ; ;; ;;; ;; ;; ; ;;; ; ;; ;;; ;; ;; ;; ;; ;;
/RAS /CAS /WE BA0 BA1 A10 ADD LDQM UDQM DQ (lower) Hi-Z Qa1 Qa2 Qa3 Qa4 D1 Qb1 Qb2 Qb4 D2
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
DQ (upper)
Hi-Z
Qa1
Qa2
Qa3
Qa4
D1
Qb1
Qb2
Qb4
D2
Activate Command for Bank D
Read Command for Bank D
Single Write Command for Bank D
Single Write Command for Bank D
Read Command for Bank D
Single Write Command for Bank D
75
76
Data Sheet E0728N10 (Ver. 1.0)
Burst Read and Single Write (Option) (Burst Length = 4, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CKE /CS
H
;; ; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ; ;; ; ;;; ; ;; ;; ; ;; ; ;; ;;; ; ;; ; ;;; ; ;; ;; ;;; ; ;; ;; ; ;; ;; ; ;;; ; ;; ; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ;; ; ;; ; ;;; ; ;; ; ; ;;; ; ;; ;;; ;; ;; ; ;;; ; ;; ;;; ;; ;; ;; ;; ;;
/RAS /CAS /WE BA0 BA1 A10 ADD LDQM UDQM DQ (lower) Hi-Z Qa1 Qa2 Qa3 Qa4 D1 Qb1 Qb2 Qb4
PD45128163-E
DQ (upper)
Hi-Z
Qa1
Qa2
Qa3
Qa4
D1
Qb1
Qb2
Qb4
Activate Command for Bank D
Read Command for Bank D
Single Write Command for Bank D
Single Write Command for Bank D
Read Command for Bank D
13.25 Full Page Random Column Read (Burst Length = Full Page, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ;; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ; ;; ; ; ;;; ; ;; ; ; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ; ;; ;; ;; ;; ; ;;; ; ;; ; ;; ;;; ; ;; ; ;; ;; ;; ;; ; ; ;;; ; ; ;; ; ;; ; ; ;;; ; ;; ; ; ;; ; ;;; ; ;; ; ;; ;;; ; ;;; ; ;; ; ;;; ; ;; ; ; ;;; ; ;; ; ;; ;;; ; ;; ; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa ADD RAa RDa CAa CDa CAb CDb CAc CDc LDQM UDQM L L Hi-Z DQ QAa1 QDa1 QAb1 QAb2 QDb1 QDb2 QAc1 QAc2 QAc3 QDc1 QDc2 QDc3
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Read Command for Bank A
Read Command for Bank A
Read Command for Bank D
Read Command for Bank A
Read Command for Bank D
Precharge Command for Bank D (PRE Termination of Burst)
Read Command for Bank D
77
78
Data Sheet E0728N10 (Ver. 1.0)
Full Page Random Column Read (Burst Length = Full Page, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;;; ;; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ; ;; ; ; ;;; ; ;; ; ; ; ;;; ; ;; ;; ;; ; ;;; ; ;; ; ;; ;; ;; ;; ; ;;; ; ;; ; ;; ;;; ; ;; ; ;; ;; ;; ;; ; ; ;;; ; ; ;; ; ;; ; ; ;;; ; ;; ; ; ;; ; ;;; ; ;; ; ;; ;;; ; ;;; ; ;; ; ;;; ; ;; ; ; ;;; ; ;; ; ;; ;;; ; ;; ; ;;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa ADD RAa RDa CAa CDa CAb CDb CAc CDc LDQM UDQM L L Hi-Z Hi-Z DQ QAa1 QDa1 QAb1 QAb2 QDb1 QDb2 QAc1 QAc2 QAc3 QDc1 QDc2 QDc3
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Read Command for Bank A
Read Command for Bank A
Read Command for Bank D
Read Command for Bank A
Read Command for Bank D
Precharge Command for Bank D (PRE Termination of Burst)
Read Command for Bank D
13.26 Full Page Random Column Write (Burst Length = Full Page, /CAS Latency = 2)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;; ; ;; ; ;;;; ; ;;; ; ; ;;;; ; ;; ; ;;;; ; ;;;; ; ; ; ;;; ;; ;; ; ;;;; ; ;; ;;;; ; ;; ;; ; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa ADD RAa RDa CAa CDa CAb CDb CAc CDc LDQM L UDQM DQ (lower) DQ (upper) L Hi-Z DAa1 DDa1 DAb1 DAb2 DDb1 DDb2 DAc1 DAc2 DAc3 DDc1 DDc2 DDc3 DDc4 Hi-Z DAa1 DDa1 DAb1 DAb2 DDb1 DDb2 DAc1 DAc2 DAc3 DDc1 DDc2 DDc3 DDc4
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Write Command for Bank A
Write Command for Bank A
Write Command for Bank D
Write Command for Bank A
Write Command for Bank D
Precharge Command for Bank D (PRE Termination of Burst)
Write Command for Bank D
79
80
Data Sheet E0728N10 (Ver. 1.0)
Full Page Random Column Write (Burst Length = Full Page, /CAS Latency = 3)
T0 CLK T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
; ;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;;;; ; ;; ; ;; ; ;; ; ;;;; ; ;;; ; ; ;;;; ; ;; ; ;;;; ; ;;;; ; ; ; ;;; ;; ;; ; ;;;; ; ;; ;;;; ; ;; ;; ; ;
CKE H /CS /RAS /CAS /WE BA0 BA1 A10 RAa RDa ADD RAa RDa CAa CDa CAb CDb CAc CDc LDQM L UDQM DQ (lower) DQ (upper) L Hi-Z DAa1 DDa1 DAb1 DAb2 DDb1 DDb2 DAc1 DAc2 DAc3 DDc1 DDc2 DDc3 DDc4 Hi-Z DAa1 DDa1 DAb1 DAb2 DDb1 DDb2 DAc1 DAc2 DAc3 DDc1 DDc2 DDc3 DDc4
PD45128163-E
Activate Command for Bank A
Activate Command for Bank D Write Command for Bank A
Write Command for Bank A
Write Command for Bank D
Write Command for Bank A
Write Command for Bank D
Precharge Command for Bank D (PRE Termination of Burst)
Write Command for Bank D
13.27 PRE (Precharge) Termination of Burst (1/2) (Burst Length = 8, /CAS Latency = 2)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
CLK
;;; ;; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;; ;;; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ;; ;; ; ; ; ;;; ; ;; ; ; ; ;;; ; ;; ; ; ; ;;; ; ;; ; ; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;;; ; ;; ; ; ;; ;;; ; ;; ; ;; ; ; ;; ; ;; ;;; ; ;; ; ;;
CKE
H
/CS
/RAS
/CAS
/WE
Data Sheet E0728N10 (Ver. 1.0)
BA0
BA1
A10
RAa
RAb
RAc
ADD
RAa
CAa
RAb
CAb
RAc
LDQM
L
UDQM
L
Write Masking
DAa1 DAa2 DAa3 DAa4 DAa5 QAb1 QAb2 QAb3 QAb4 QAb5 Hi-Z
DQ (lower) DQ (upper)
Hi-Z
Hi-Z
DAa1
DAa2 DAa3
DAa4
DAa5
QAb1 QAb2
QAb3 QAb4 QAb5
Hi-Z
PD45128163-E
Activate Command for Bank A
Write Command for Bank A PRE Termination of Burst
tRCD
Read Command for Bank A Precharge Command for Bank A
tDPL
tRAS
Activate Command for Bank A PRE Termination of Burst
tRAS
Activate Command for Bank A
tRP
Precharge Command for Bank A
81
82
Data Sheet E0728N10 (Ver. 1.0)
PRE (Precharge) Termination of Burst (2/2) (Burst Length = 8, /CAS Latency = 3)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21
;; ; ;; ; ;; ;; ; ;; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ;; ; ;; ;;;; ; ;; ; ;; ;;;; ; ; ;; ; ;; ;;;; ; ; ;; ; ;; ;;;; ; ; ;; ; ;; ;;;; ; ;; ;; ; ;; ;; ; ;; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;; ; ;; ; ;;;; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;;;; ; ; ;; ;; ; ;; ;; ;;;; ; ; ;; ;; ; ;; ; ;; ; ;;; ; ;;;; ; ;; ;; ; ;;
CLK CKE
H
/CS
/RAS
/CAS
/WE
BA0
BA1
A10
RAa
RAb
RAc
ADD
RAa
CAa
RAb
CAb
RAc
LDQM
L
UDQM
L
Write Masking
DAa1 DAa2 DAa3
DAa4 DAa5
DQ (lower) DQ (upper)
Hi-Z
Hi-Z
QAb1 QAb2
QAb3 QAb4
Hi-Z
DAa1
DAa2
DAa3
DAa4
DAa5
Hi-Z
QAb1 QAb2
QAb3 QAb4
Activate Command for Bank A
Write Command for Bank A PRE Termination of Burst
tRCD
tRAS
Read Command for Bank A Precharge Command for Bank A
tDPL
Activate Command for Bank A Precharge Command for Bank A
PD45128163-E
Activate Command for Bank A
tRP
PRE Termination of Burst tRAS
PD45128163-E
14. Package Drawing
54-pin Plastic TSOP (II) Solder plating: Lead free (Sn-Bi)
Unit: mm
22.22 0.10
A
54
28
PIN#1 ID
1 0.80
27
B
0.25 to 0.40 0.91 max.
0.16 M S A B
11.76 0.20
10.16
0.80 Nom 0 to 8
0.25
0.09 to 0.20
1.0 0.05
1.2 max.
S
0.10 S
0.10 +0.08 -0.05
0.60 0.15
Note: Dimension "A" does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.20mm per side.
ECA-TS2-0016-02
Data Sheet E0728N10 (Ver. 1.0)
83
PD45128163-E
15. Recommended Soldering Conditions
Please consult with our sales offices for soldering conditions of the PD45128xxx. Type of Surface Mount Device
PD45128xxxG5 : 54-pin Plastic TSOP (II) < Lead free (Sn-Bi) >
84
Data Sheet E0728N10 (Ver. 1.0)
PD45128163-E
NOTES FOR CMOS DEVICES
1 PRECAUTION AGAINST ESD FOR MOS DEVICES
Exposing the MOS devices to a strong electric field can cause destruction of the gate oxide and ultimately degrade the MOS devices operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it, when once it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. MOS devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. MOS devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor MOS devices on it.
2 HANDLING OF UNUSED INPUT PINS FOR CMOS DEVICES
No connection for CMOS devices input pins can be a cause of malfunction. If no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected to VDD or GND with a resistor, if it is considered to have a possibility of being an output pin. The unused pins must be handled in accordance with the related specifications.
3 STATUS BEFORE INITIALIZATION OF MOS DEVICES
Power-on does not necessarily define initial status of MOS devices. Production process of MOS does not define the initial operation status of the device. Immediately after the power source is turned ON, the MOS devices with reset function have not yet been initialized. Hence, power-on does not guarantee output pin levels, I/O settings or contents of registers. MOS devices are not initialized until the reset signal is received. Reset operation must be executed immediately after power-on for MOS devices having reset function.
CME0107
Data Sheet E0728N10 (Ver. 1.0)
85
PD45128163-E
The information in this document is subject to change without notice. Before using this document, confirm that this is the latest version.
No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Elpida Memory, Inc. Elpida Memory, Inc. does not assume any liability for infringement of any intellectual property rights (including but not limited to patents, copyrights, and circuit layout licenses) of Elpida Memory, Inc. or third parties by or arising from the use of the products or information listed in this document. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of Elpida Memory, Inc. or others. Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of the customer's equipment shall be done under the full responsibility of the customer. Elpida Memory, Inc. assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. [Product applications] Elpida Memory, Inc. makes every attempt to ensure that its products are of high quality and reliability. However, users are instructed to contact Elpida Memory's sales office before using the product in aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment, medical equipment for life support, or other such application in which especially high quality and reliability is demanded or where its failure or malfunction may directly threaten human life or cause risk of bodily injury. [Product usage] Design your application so that the product is used within the ranges and conditions guaranteed by Elpida Memory, Inc., including the maximum ratings, operating supply voltage range, heat radiation characteristics, installation conditions and other related characteristics. Elpida Memory, Inc. bears no responsibility for failure or damage when the product is used beyond the guaranteed ranges and conditions. Even within the guaranteed ranges and conditions, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Elpida Memory, Inc. products does not cause bodily injury, fire or other consequential damage due to the operation of the Elpida Memory, Inc. product. [Usage environment] This product is not designed to be resistant to electromagnetic waves or radiation. This product must be used in a non-condensing environment. If you export the products or technology described in this document that are controlled by the Foreign Exchange and Foreign Trade Law of Japan, you must follow the necessary procedures in accordance with the relevant laws and regulations of Japan. Also, if you export products/technology controlled by U.S. export control regulations, or another country's export control laws or regulations, you must follow the necessary procedures in accordance with such laws or regulations. If these products/technology are sold, leased, or transferred to a third party, or a third party is granted license to use these products, that third party must be made aware that they are responsible for compliance with the relevant laws and regulations.
M01E0107

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