MB81N643289 Datasheet, PDF (14/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
s FUNCTION TRUTH TABLE (continued)
COMMAND TRUTH TABLE FOR PD (continued)
Current
State
PD
(n-1) (n)
CS RAS CAS WE Address
Function
Notes
All
Banks
Idle
H
H
X
X
X
X
H
L
H
X
X
X
X
Refer to the Command Truth Table.
X
Power Down Entry
*18
H
L
L
HHH
X
Power Down Entry
*18
H
L
L
HH
L
X
Illegal
H
L
L
H
L
X
X
Illegal
H
L
L
L
H
X
X
Illegal
H
L
L
L
L
H
X
Self-refresh Entry
H
L
L
L
L
L
X
Illegal
L
X
X
X
X
X
X
Invalid
Bank Active H
H
X
X
X
X
X
Refer to the Command Truth Table.
H
L
X
X
X
X
X
Illegal
L
H
X
X
X
X
X
Invalid
L
L
X
X
X
X
X
Invalid
14