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參數資料
| 型號： | AD484M1644VTA-8L |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Ascend Semiconductor Corporation(64Mb SDRAM) |
| 中文描述： | 登半導體公司（64MB內存） |
| 文件頁數： | 14/20頁 |
| 文件大?。?/td> | 85K |
| 代理商： | AD484M1644VTA-8L |
Preliminary
14
64Mb SDRAM
Ascend Semiconductor Corporation
Current
state
Addr.
Self refresh
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
5. Command Truth Table for CKE
Action
INVALID, CLK (n – 1) would exit self refresh
Self refresh recovery
Self refresh recovery
ILLEGAL
ILLEGAL
Maintain self refresh
Idle after t
RC
Idle after t
RC
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
INVALID, CLK(n-1) would exit power down
Exit power down
→
Idle
Maintain power down mode
Notes
Remark :
H = High level, L = Low level, X = High or Low level (Don't care)
/CS
X
H
L
L
L
X
H
L
L
L
H
L
L
L
X
X
X
/R
X
X
H
H
L
X
X
H
H
L
X
H
H
L
X
X
X
/C
X
X
H
L
X
X
X
H
L
X
X
H
L
X
X
X
X
/W
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Self refresh
recovery
Both banks
idle
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
Refer to operations in Operative Command Table
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 t o 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
X
Op-Code
H
L
L
L
L
H
L
L
L
L
X
X
X
X
X
X
X
X
H
L
L
L
X
H
L
L
L
X
X
X
X
X
X
X
X
X
H
L
L
X
X
H
L
L
X
X
X
X
X
X
X
X
X
X
H
L
X
X
X
H
L
X
X
X
X
X
X
X
n-1
H
L
L
L
L
L
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H
L
H
H
L
L
n
X
H
H
H
H
L
H
H
H
H
L
L
L
L
X
H
L
H
H
H
H
H
L
L
L
L
L
X
X
X
H
L
H
L
CKE
Power down
X
1
Op-Code
X
X
X
1
Row active
1
Any state
other than
listed above
X
X
X
2
Notes 1.
Self refresh can be entered only from the both banks idle state.
Power down can be entered only from both banks idle or row active state.
2.
Must be legal command as defined in Operative Command Table.
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| AD484M1644VTA-8LI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ascend Semiconductor Corporation(64Mb SDRAM) |
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