MB81P643287 Datasheet, PDF (11/65 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT, FCRAMTM CORE BASED DOUBLE DATA RATE SDRAM

MB81P643287-50/-60
OPERATION COMMAND TABLE (Continued)
Current
State
CS RAS CAS WE Address
HXXX
X
L HHH
X
L HH L
X
L H L H BA, CA, AP
L H L L BA, CA, AP
Precharging
L LHH
BA, RA
L LHL
BA, AP
L LHL
BA, AP
L L LH
X
LLLL
MODE
HXXX
X
L HHH
X
L HH L
X
L H L H BA, CA, AP
Bank
Activating
L H L L BA, CA, AP
L LHH
BA, RA
L LHL
BA, AP
L LHL
BA, AP
L L LH
X
LLLL
MODE
Command
Function
DESL
NOP (Idle after lRP)
NOP
NOP (Idle after lRP)
BST
NOP (Idle after lRP)
READ/READA Illegal
WRIT/WRITA Illegal
ACTV
Illegal
PRE
NOP
PALL
NOP
REF/SELF Illegal
MRS
Illegal
DESL
NOP (Bank Active after lRCD)
NOP
NOP (Bank Active after lRCD)
BST
NOP (Bank Active after lRCD)
READ/READA Illegal
WRIT/WRITA Illegal
ACTV
Illegal
PRE
Illegal
PALL
Illegal
REF/SELF Illegal
MRS
Illegal
Notes
*15
*16
*16
*16
*16
*15
*15
*16
*16
*19
*16
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