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參數(shù)資料
| 型號： | A43L4616V-7 |
| 廠商： | AMIC Technology Corporation |
| 英文描述： | 4M X 16 Bit X 4 Banks Synchronous DRAM |
| 中文描述： | 4米× 16位× 4個銀行同步DRAM |
| 文件頁數(shù)： | 39/41頁 |
| 文件大小： | 1063K |
| 代理商： | A43L4616V-7 |
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A43L4616
(September, 2004, Version 0.0)
38
AMIC Technology, Corp.
Function Truth Table for CKE (Table 2)
Current
State
CKE
n-1
H
L
CKE
n
X
H
CS
RAS
CAS
WE
Address
Action
Note
X
H
X
X
X
X
X
X
X
X
INVALID
Exit Self Refresh
→
ABI after t
RC
Exit Self Refresh
→
ABI after t
RC
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Maintain Self Refresh)
INVALID
Exit Power Down
→
ABI
Exit Power Down
→
ABI
ILLEGAL
ILLEGAL
ILLEGAL
NOP(Maintain Power Down Mode)
Refer to Table 1
Enter Power Down
Enter Power Down
ILLEGAL
ILLEGAL
Row (& Bank ) Active
Enter Self Refresh
OPCODE MRS
X
NOP
X
Refer to Operations in Table 1
X
Begin Clock Suspend next cycle
X
Exit Clock Suspend next cycle
X
Maintain clock Suspend
6
L
H
L
H
H
H
X
6
L
L
L
L
H
L
H
H
H
L
X
H
L
L
L
X
X
H
H
H
L
X
X
X
H
L
X
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
Self
Refresh
7
L
H
L
H
H
H
X
7
L
L
L
L
H
H
H
H
H
H
H
H
L
H
H
L
L
H
H
H
L
H
L
L
L
L
L
L
L
L
H
L
H
L
L
L
L
X
X
H
L
L
L
L
L
L
X
X
X
X
X
H
H
L
X
X
X
H
H
H
L
L
L
X
X
X
X
X
H
L
X
X
X
X
H
H
L
H
L
L
X
X
X
X
X
L
X
X
X
X
X
H
L
X
H
H
L
X
X
X
X
X
X
X
X
X
X
X
X
X
X
RA
X
Both
Bank
Precharge
Power
Down
8
8
8
9
9
All
Banks
Idle
Any State
Other than
Listed
Above
Abbreviations : ABI = All Banks Idle
Note: 6. After CKE’s low to high transition to exit self refresh mode, a minimum of t
RC
(min) has to be elapse before issuing a
new command.
7. CKE low to high transition is asynchronous as if it restarts internal clock.
A minimum setup time “tSS + one clock” must be satisfied before any command can be issued other than exit.
8. Power-down and self refresh can be entered only when all the banks are in idle state.
9. Must be a legal command.
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