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): 6/64頁
文件大小: 1732K
代理商: MB81N643289
6
MB81N643289-50/-60
Preliminary (AE1E)
I
FUNCTION TRUTH TABLE (continued)
DM TRUTH TABLE (Effective during Write mode)
PD TRUTH TABLE
Notes:*10. The REF and SELF commands should only be issued after all banks have been precharged (PC or
PCA command). In case of SELF command, it should also be issued after the last read data have been
appeared on DQ. Refer to STATE DIAGRAM.
*11. PD must bring to Low level together with REF command.
*12. The PDEN command should only be issued after the last read data have been appeared on DQ and
after the l
WPL
is satisfied from last write data input.
Function
Command
PD
DM
0
DM
1
DM
2
DM
3
(n - 1)
(n)
Data Mask for DQ
0
to DQ
7
MASK0
H
X
H
X
X
X
Data Mask for DQ
8
to DQ
15
MASK1
H
X
X
H
X
X
Data Mask for DQ
16
to DQ
23
MASK2
H
X
X
X
H
X
Data Mask for DQ
24
to DQ
31
MASK3
H
X
X
X
X
H
Current
State
Function
Notes
Command
PD
CS
RAS CAS
WE
AC
BA
0-2
A
10-0
DQ
0-31
(n-1) (n)
Idle
Auto-refresh
*10
REF
H
H
L
L
L
H
X
X
X
Idle
Self-refresh Entry
*10
*11
SELF
H
L
L
L
L
H
X
X
X
Hi-Z
Self-
refresh
Self-refresh Continue
L
L
X
X
X
X
X
X
X
Hi-Z
Self-
refresh
Self-refresh Exit
SELFX
L
H
L
H
H
H
X
X
X
Hi-Z
L
H
H
X
X
X
X
X
X
Hi-Z
Idle
Power Down Entry
*12
PDEN
H
L
L
H
H
H
X
X
X
Hi-Z
H
L
H
X
X
X
X
X
X
Hi-Z
Power
Down
Power Down Continue
L
L
X
X
X
X
X
X
X
Hi-Z
Power
Down
Power Down Exit
PDEX
L
H
L
H
H
H
X
X
X
Hi-Z
L
H
H
X
X
X
X
X
X
Hi-Z
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