MB81F643242B-10FN-X Datasheet, PDF (12/56 Pages) Fujitsu Component Limited. – MEMORY CMOS 4 X 512 K X 32 BIT SYNCHRONOUS DYNAMIC RAM

MB81F643242B-10FN-X Advanced Info (AE0.3E)
COMMAND TRUTH TABLE FOR CKE Note *1
Current
State
CKE CKE
n-1 n
CS
RAS CAS
WE
Self-
refresh
HXXXXX
L HHX X X
Self-
refresh
Recovery
L H L HHH
L H L HH L
LHLHLX
LHL LXX
L
L
X
X
X
X
LXXXXX
HHHXXX
HH L HHH
HH L HH L
HHLHL X
HHL L XX
HHXXXX
HLXXXX
Addr
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Function
Notes
Invalid
Exit Self-refresh
(Self-refresh Recovery → Idle after tRC)
Exit Self-refresh
(Self-refresh Recovery → Idle after tRC)
Illegal
Illegal
Illegal
NOP (Maintain Self-refresh)
Invalid
Idle after tRC
Idle after tRC
Illegal
Illegal
Illegal
Illegal
Illegal
*2
(Continued)
12