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参数资料
| 型号： | 42S16400A |
| 厂商： | Integrated Silicon Solution, Inc. |
| 英文描述： | 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM |
| 中文描述： | 1梅格位× 16位× 4银行（64兆位）同步动态RAM |
| 文件页数： | 53/55页 |
| 文件大小： | 472K |
| 代理商： | 42S16400A |
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IS42S16400A
ISSI
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
7
Rev.C
04/16/03
TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK
n (1-6)
CURRENT STATE
COMMAND (ACTION)
CS RAS CAS WE
Any
COMMAND INHIBIT (NOP/Continue previous operation)
HX
X
NO OPERATION (NOP/Continue previous operation)
LH
H
Idle
ACTIVE (Select and activate row)
L
H
AUTO REFRESH(7)
LL
L
H
LOAD MODE REGISTER(7)
LL
PRECHARGE(11)
LL
H
L
Row Active
READ (Select column and start READ burst)(10)
LH
WRITE (Select column and start WRITE burst)(10)
LH
L
PRECHARGE (Deactivate row in bank or banks)(8)
LL
H
L
Read
READ (Select column and start new READ burst)(10)
LH
(Auto
WRITE (Select column and start WRITE burst)(10)
LH
L
Precharge
PRECHARGE (Truncate READ burst, start PRECHARGE)(8)
LL
H
L
Disabled)
BURST TERMINATE(9)
LH
HL
Write
READ (Select column and start READ burst)(10)
LH
(Auto
WRITE (Select column and start new WRITE burst)(10)
LH
L
Precharge
PRECHARGE (Truncate WRITE burst, start PRECHARGE)(8)
LL
H
L
Disabled)
BURST TERMINATE(9)
LH
HL
TRUTH TABLE – CKE (1-4)
CURRENT STATE
COMMANDn
ACTIONn
CKEn-1
CKEn
Power-Down
X
Maintain Power-Down
L
Self Refresh
X
Maintain Self Refresh
L
Clock Suspend
X
Maintain Clock Suspend
L
Power-Down
(5)
COMMAND INHIBIT or NOP
Exit Power-Down
L
H
Self Refresh
(6)
COMMAND INHIBIT or NOP
Exit Self Refresh
L
H
Clock Suspend
(7)
X
Exit Clock Suspend
L
H
All Banks Idle
COMMAND INHIBIT or NOP
Power-Down Entry
H
L
All Banks Idle
AUTO REFRESH
Self Refresh Entry
H
L
Reading or Writing
VALID
Clock Suspend Entry
H
L
See TRUTH TABLE – CURRENT STATE BANK n, COMMAND TO BANK
n
HH
NOTES:
1. CKEn is the logic state of CKE at clock edge
n; CKEn-1 was the state of CKE at the previous clock edge.
2. Current state is the state of the SDRAM immediately prior to clock edge
n.
3. COMMANDn is the command registered at clock edge
n, and ACTONn is a result of COMMANDn.
4. All states and sequences not shown are illegal or reserved.
5. Exiting power-down at clock edge
n will put the device in the all banks idle state in time for clock edge n+1 (provided that tCKS is met).
6. Exiting self refresh at clock edge
n will put the device in all banks idle state once tXSR is met. COMMAND INHIBIT or NOP commands
should be issued on clock edges occurring during the tXSR period. A minimum of two NOP commands must be sent during tXSR period.
7. After exiting clock suspend at clock edge
n, the device will resume operation and recognize the next command at clock edge n+1.
相关PDF资料 |
PDF描述 |
|---|---|
| 42S16800A | 16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| 42S32200 | 512K Bits x 32 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM |
| 4300-000 | EMI/RFI FILTER Hermetically Sealed |
| 4300-000LF | |
| 4300-001 | EMI/RFI FILTER Hermetically Sealed |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 42S16400B-6TLTR | 制造商:Integrated Silicon Solution Inc 功能描述: |
| 42S16800A | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| 42S16800L | 制造商:NEC 制造商全称:NEC 功能描述:3.3 V OPERATION 16 M-BIT DYNAMIC RAM 2 M-WORD BY 8-BIT, FAST PAGE MODE |
| 42S16800L-A60 | 制造商:NEC 制造商全称:NEC 功能描述:3.3 V OPERATION 16 M-BIT DYNAMIC RAM 2 M-WORD BY 8-BIT, FAST PAGE MODE |
| 42S16800L-A70 | 制造商:NEC 制造商全称:NEC 功能描述:3.3 V OPERATION 16 M-BIT DYNAMIC RAM 2 M-WORD BY 8-BIT, FAST PAGE MODE |
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