MB81F643242C Datasheet, PDF (9/56 Pages) Fujitsu Component Limited. – 4 X 512 K X 32 BIT SYNCHRONOUS DYNAMIC RAM

MB81F643242C-60/-70/-10 Advanced Info (AE0.1E)
(Continued)
Current
State
CS RAS CAS WE
Addr
Command
Function
Notes
Read
HXXX
X
DESL
NOP (Continue Burst to End → Bank
Active)
L HHH
X
NOP
NOP (Continue Burst to End → Bank
Active)
L HH L
X
BST
Burst Stop → Bank Active
L
H
L
H
BA, CA, AP
READ/READA
Terminate Burst, New Read;
Determine AP
L
H
L
L
BA, CA, AP
WRIT/WRITA
Terminate Burst, Start Write;
Determine AP
*4
L LHH
BA, RA
ACTV
Illegal
*2
L LHL
BA, AP
PRE/PALL
Terminate Burst, Precharge → Idle;
Determine Precharge Type
L L LH
X
REF/SELF Illegal
LLLL
MODE
MRS
Illegal
Write
HXXX
X
DESL
NOP (Continue Burst to End →
Bank Active)
L HHH
X
NOP
NOP (Continue Burst to End →
Bank Active)
L HH L
X
BST
Burst Stop → Bank Active
L
H
L
H
BA, CA, AP
READ/READA
Terminate Burst, Start Read;
Determine AP
*4
L
H
L
L
BA, CA, AP
WRIT/WRITA
Terminate Burst, New Write;
Determine AP
L LHH
BA, RA
ACTV
Illegal
*2
L LHL
BA, AP
PRE/PALL
Terminate Burst, Precharge;
Determine Precharge Type
L L LH
X
REF/SELF Illegal
LLLL
MODE
MRS
Illegal
(Continued)
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