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參數(shù)資料
| 型號： | W981204AH-8H |
| 英文描述： | x4 SDRAM |
| 中文描述： | x4內(nèi)存 |
| 文件頁數(shù)： | 14/42頁 |
| 文件大?。?/td> | 1082K |
| 代理商： | W981204AH-8H |
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W981204AH
8M x 4 Banks x 4 bits SDRAM
Revision 1.0 Publication Release Date: June, 2000
- 14 -
No Operation Command
The No Operation Command should be used in cases when the SDRAM is in a idle or a wait state to prevent the SDRAM
from registering any unwanted commands between operations. A No Operation Command is registered when CS is low with
RAS, CAS, and WE held high at the rising edge of the clock. A No Operation Command will not terminate a previous
operation that is still executing, such as a burst read or write cycle.
Deselect Command
The Deselect Command performs the same function as a No Operation Command. Deselect Command occurs when CS is
brought high, the RAS, CAS, and WE signals become don't cares.
Clock Suspend Mode
During normal access mode, CKE must be held high enabling the clock. When CKE is registered low while at least one of the
banks is active, Clock Suspend Mode is entered. The Clock Suspend mode deactivates the internal clock and suspends any
clocked operation that was currently being executed. There is a one clock delay between the registration of CKE low and the
time at which the SDRAM operation suspends. While in Clock Suspend mode, the SDRAM ignores any new commands that
are issued. The Clock Suspend mode is exited by bringing CKE high. There is a one clock cycle delay from when CKE returns
high to when Clock Suspend mode is exited.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W982504AH-7 | x4 SDRAM |
| W982504AH-75 | x4 SDRAM |
| W982504AH-8H | x4 SDRAM |
| W982508AH-7 | x8 SDRAM |
| W982508AH-75 | x8 SDRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W981208AH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4M x 8 bit x 4 Banks SDRAM |
| W981208AH-75 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM |
| W981208AH-8H | 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM |
| W981208BH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4M x 4 BANKS x 8 BIT SDRAM |
| W981208BH-7 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:x8 SDRAM |
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