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

MB81P643287-50/-60
OPERATION COMMAND TABLE (Applicable to single bank)(Note*13)
Current
State
CS RAS CAS WE Address
Command
Function
HXXX
X
DESL
NOP
L HHH
X
NOP
NOP
L HH L
X
BST
NOP
L H L H BA, CA, AP READ/READA Illegal
L H L L BA, CA, AP WRIT/WRITA Illegal
Idle
L LHH
BA, RA
ACTV
Bank Active after lRCD
L LHL
BA, AP
PRE
NOP
L LHL
BA, AP
PALL
NOP
L L LH
X
REF/SELF Auto-refresh or Self-refresh
LLLL
MODE
MRS
Mode Register Set
(Idle after lMRD)
HXXX
X
DESL
NOP
L HHH
X
NOP
NOP
L HH L
X
BST
NOP
L H L H BA, CA, AP READ/READA Begin Read; Determine AP
L H L L BA, CA, AP WRIT/WRITA Begin Write; Determine AP
Bank Active
L LHH
BA, RA
ACTV
Illegal
L LHL
BA, AP
PRE
Precharge
L LHL
BA, AP
PALL
Precharge
L L LH
X
REF/SELF Illegal
LLLL
MODE
MRS
Illegal
Notes
*15
*16
*16
*15
*17
*17
*15
*16
*15
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