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

MB81F643242B-10FN-X Advanced Info (AE0.3E)
(Continued)
Current
State
CS RAS CAS WE
Addr
Command
Function
Notes
Pre-
HXXX
X
charging
L HHH
X
DESL
NOP
NOP (Idle after tRP)
NOP (Idle after tRP)
L HH L
X
BST
NOP (Idle after tRP)
L H L H BA, CA, AP READ/READA Illegal
*2
L H L L BA, CA, AP WRIT/WRITA Illegal
*2
L LHH
BA, RA
ACTV
Illegal
*2
L LHL
BA, AP
PRE/PALL
NOP (PALL may affect other
bank)
*5
L L LH
X
REF/SELF Illegal
LLLL
MODE
MRS
Illegal
Bank
HXXX
X
Activating
L HHH
X
DESL
NOP
NOP (Bank Active after tRCD)
NOP (Bank Active after tRCD)
L HH L
X
BST
NOP (Bank Active after tRCD)
L H L H BA, CA, AP READ/READA Illegal
*2
L H L L BA, CA, AP WRIT/WRITA Illegal
*2
L LHH
BA, RA
ACTV
Illegal
*2
L LHL
BA, AP
PRE/PALL Illegal
*2
L L LH
X
REF/SELF Illegal
LLLL
MODE
MRS
Illegal
(Continued)
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