參數(shù)資料
型號: MB81N643289
廠商: Fujitsu Limited
英文描述: DRILL BIT HIGH SPEED STEEL .021,1
中文描述: 8 × 256K × 32位的雙倍數(shù)據(jù)速率FCRAMTM
文件頁數(shù): 24/64頁
文件大?。?/td> 1732K
代理商: MB81N643289
24
MB81N643289-50/-60
Preliminary (AE1E)
I
FUNCTIONAL DESCRIPTION (continued)
Fig. 3 – SDRAM READ TIMING EXAMPLE (@ CL=2 & BL=2)
CLK
(external)
DATA
Command
RD
<SDRAM >
< DDR SDRAM >
Hi-Z
RD
Q1
Hi-Z
Q2
Q1
Q2
CLK
DATA
Command
CLK
t0
t1
t2
t3
t4
t0
t0.5
t1
t1.5
t2
t2.5
t3
t3.5
t4
Stored by CLK input
Stored by CLK input
Output in every rising CLK edge
Output in every
cross point of clock input
DQS signal tran-
sition occurs at
the same time as
data bus.
DQS
Hi-Z
Low
High
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