MB81N643289 Datasheet, PDF (7/64 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT DOUBLE DATA RATE FCRAMTM

MB81N643289-50/-60 Preliminary (AE1E)
s FUNCTION TRUTH TABLE (continued)
OPERATION COMMAND TABLE (Applicable to single bank)
Current
State
CS RAS CAS WE Address
Command
Idle
HXXX
X
DESL
L HHH
X
NOP
L HH L
—
—
L H L H BA, CA, AC
RD/RDA
L H L L BA, CA, AC WR/WRA
L LHH
BA, RA
ACTV
L LHL
BA, AC
PC
L LHL
BA, AC
PCA
L L LH
X
REF/SELF
LLLL
MODE
MRS/EMRS
Bank Active H X X X
X
DESL
L HHH
X
NOP
L HH L
—
—
L H L H BA, CA, AC
RD/RDA
L H L L BA, CA, AC WR/WRA
L LHH
BA, RA
ACTV
L LHL
BA, AC
PC
L LHL
BA, AC
PCA
L L LH
X
REF/SELF
LLLL
MODE
MRS/EMRS
Note *13
Function
Notes
NOP
NOP
Illegal
*14
Illegal
*15
Illegal
*15
Bank Active after lRCD
NOP
NOP
*14
Auto-refresh or Self-refresh *16
Mode Register /
Extended Mode Register Set *16
(Idle after lRSC)
NOP
NOP
Illegal
Begin Read; Determine AC
Begin Write; Determine AC
Illegal
*15
Page Close
Page Close
*14
Illegal
Illegal
7