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參數資料
| 型號： | W981616BH |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 512K ⅴ 2 BANKS ⅴ 16 BITS SDRAM |
| 中文描述： | 2銀行為512kⅴⅴ16位內存 |
| 文件頁數： | 9/40頁 |
| 文件大小： | 1015K |
| 代理商： | W981616BH |
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W981616BH
Publication Release Date: February 2000
- 9 -
Revision A2
TABLE OF OPERATING MODES
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
BA
A10 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
Self-Refresh Exit
Idle
H
X
X
V
V
V
L
L
H
H
Any
H
X
X
V
L
X
L
L
H
L
Any
H
X
X
X
H
X
L
L
H
L
Active (3)
H
X
X
V
L
V
L
H
L
L
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
H
X
X
V
V
V
L
L
L
L
Any
H
X
X
X
X
X
L
H
H
H
Active (4)
H
X
X
X
X
X
L
H
H
L
Any
H
X
X
X
X
X
H
X
X
X
Idle
H
H
X
X
X
X
L
L
L
H
Idle
H
L
X
X
X
X
L
L
L
H
Idle
(S.R)
Active
L
L
H
H
H
L
X
X
X
X
X
X
X
X
X
X
X
X
H
L
X
X
H
X
X
H
X
X
X
X
Clock Suspend Mode
Entry
Power Down Mode
Entry
Clock Suspend Mode
Exit
Power Down Mode Exit
Idle
Active (5)
H
H
L
L
X
X
X
X
X
X
X
X
H
L
X
H
X
H
X
X
Active
L
H
X
X
X
X
X
X
X
X
Any
(Power
down)
Active
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
H
X
L
X
X
X
X
X
X
X
Active
H
X
H
X
X
X
X
X
X
X
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 BA 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.
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相關代理商/技術參數 |
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| W981616BH-7 | 制造商:Winbond Electronics Corp 功能描述:SDRAM, 1M x 16, 50 Pin, Plastic, TSOP |
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| W9816G6CB-6 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 2 BANKS 】 16 BITS SDRAM |
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