MB81P643287 Datasheet, PDF (15/65 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT, FCRAMTM CORE BASED DOUBLE DATA RATE SDRAM

MB81P643287-50/-60
COMMAND TRUTH TABLE FOR CKE (continued)
Current
State
CKE CKE
(n-1) (n)
CS
RAS CAS
WE
H
H
H
X
X
X
H
H
L
H
X
X
H
H
L
L
H
X
H
H
L
L
L
H
H
H
L
L
L
L
All
Banks
Idle
H
L
H
X
X
X
H
L
L
H
H
H
H
L
L
H
H
L
H
L
L
H
L
X
H
L
L
L
H
X
H
L
L
L
L
H
H
L
L
L
L
L
L
X
X
X
X
X
H
H
X
X
X
X
H
L
X
X
X
X
Bank Active
L
H
X
X
X
X
L
L
X
X
X
X
Address
Function
Notes
X NOP
V Refer to the Command Truth Table.
V Refer to the Command Truth Table.
X Auto-refresh
V Mode Register Set
*21
X Power Down Entry
*22
X Power Down Entry
*22
X Illegal
X Illegal
X Illegal
X Self-refresh Entry
*22
X Illegal
X Invalid
X Refer to the Command Truth Table.
X Illegal
X Invalid
X Invalid
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