MB81N643289 Datasheet, PDF (15/64 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
Read, Write, H
H
X
X
X
X
Write Page
Closing
H
L
X
X
X
X
X Refer to the Command Truth Table.
X Illegal
*19
L
H
X
X
X
X
X Invalid
L
L
X
X
X
X
X Invalid
Any State
L
X
X
X
X
X
Other Than
Listed
Above
H
H
X
X
X
X
H
L
X
X
X
X
X Invalid
X Refer to the Command Truth Table.
X Illegal
H
H
X
X
X
X
X Refer to the Command Truth Table.
H
L
H
X
X
X
X Illegal
H
L
L
HH
H
X Illegal
H
L
L
HH
L
X Illegal
Refreshing H
L
L
H
L
X
X Illegal
H
L
L
L
X
X
X Illegal
L
L
X
X
X
X
X Invalid
L
H
X
X
X
X
X Invalid
H
H
X
X
X
X
X Refer to the Command Truth Table.
*18. PDEN and SELF command should only be issued after the last read data have been appeared on DQ.
*19. The Clock Suspend mode is not supported on this device and it is illegal if PD is brought to Low during
the Burst Read or Write mode.
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