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參數(shù)資料
| 型號： | W9864AASA |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 64MB (8M x 64) SDRAM SO-DIMM MODULE(64MB (8M x 64)小型雙列直插同步動態(tài)RAM模塊) |
| 中文描述： | 64MB的（8米× 64）SDRAM內存的SO - DIMM模組（64兆（8米× 64）小型雙列直插同步動態(tài)內存模塊） |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 166K |
| 代理商： | W9864AASA |
W9864AASA
64MB (8M x 64) SDRAM SO-DIMM MODULE
Revision 0.9
9 OF
12
Publication Release Date:98/05/18
Operation Mode
Fully synchronous operations are performed to latch the commands at the positive edges of CLK. Table 1 shows the truth
table for the operation commands.
Table 1: Truth Table ( note (1), (2))
COMMAND
Device state
CKEn-1
CKEn
DQM
BA0,
BA1
A10
A11,
A9-0
___
CS
___
RAS
____
CAS
___
WE
Bank Active
Bank Precharge
Precharge All
Write
Write with
Autoprecharge
Read
Read with
Autoprecharge
Mode Register Set
No–Operation
Burst Stop
Device Deselect
Auto–Refresh
Self–Refresh Entry
Idle
Any
Any
H
H
H
H
X
X
X
X
X
X
X
X
V
V
X
V
V
L
H
L
V
X
X
V
L
L
L
L
L
L
L
H
H
H
H
L
H
L
L
L
Active (3)
Active (3)
H
X
X
V
H
V
L
H
L
L
Active (3)
H
X
X
V
L
V
L
H
L
H
Active (3)
H
X
X
V
H
V
L
H
L
H
Idle
Any
H
H
H
H
H
H
X
X
X
X
H
L
X
X
X
X
X
X
V
X
X
X
X
X
V
X
X
X
X
X
V
X
X
X
X
X
L
L
L
H
L
L
L
H
H
X
L
L
L
H
H
X
L
L
L
H
L
X
H
H
Active (4)
Any
Idle
Idle
Self Refresh Exit
idle
(S.R.)
L
L
H
H
X
X
X
X
X
X
X
X
H
L
X
H
X
H
X
X
Clock suspend Mode
Entry
Power Down Mode
Entry
Active
H
L
X
X
X
X
X
X
X
X
Idle
Active (5)
H
H
L
L
X
X
X
X
X
X
X
X
H
L
X
H
X
H
X
X
Clock Suspend Mode
Exit
Active
L
H
X
X
X
X
X
X
X
X
Power Down Mode Exit
Any
(power down)
L
L
H
H
X
X
X
X
X
X
X
X
H
L
X
H
X
H
X
X
Data write/Output
Enable
Data Write/Output
Disable
Notes
: (1) V=Valid X=Don't care L=Low Level H=High Level
(2) CKEn signal is input level when commands are provided.
(3) These are state of bank designated by BA0, BA1 signals.
(4) Device state is full page burst operation.
(5) Power Down Mode can not be entered in the burst cycle. When this command asserts in the burst cycle, device
state is clock suspend mode
Active
H
X
L
X
X
X
X
X
X
X
Active
H
X
H
X
X
X
X
X
X
X
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