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參數資料
型號: W9816G6BB
廠商: WINBOND ELECTRONICS CORP
英文描述: 512K x 2 BANKS x 16 BITS SDRAM
中文描述: 為512k × 2組X 16位內存
文件頁數: 11/43頁
文件大小: 1164K
代理商: W9816G6BB
W9816G6BB
Publication Release Date: January 2, 2003
- 11 -
Revision A1
The Power Down mode is exited by bringing CKE high. When CKE goes high, a No Operation
Command is required on the next rising clock edge, depending on t
CK
. The input buffers need to be
enabled with CKE held high for a period equal to t
CKS
(min) + t
CK
(min).
No Operation Command
The No Operation Command should be used in cases when the SDRAM is in an 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.
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相關代理商/技術參數
參數描述
W9816G6BB-7 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K x 2 BANKS x 16 BITS SDRAM
W9816G6CB 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 2 BANKS 】 16 BITS SDRAM
W9816G6CB-6 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 2 BANKS 】 16 BITS SDRAM
W9816G6CB-7 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 2 BANKS 】 16 BITS SDRAM
W9816G6CH 制造商:WINBOND 制造商全稱:Winbond 功能描述:512K 】 2 BANKS 】 16 BITS SDRAM