MH32S72BBFA 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC
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MH32S72BBFA
MITSUBISHI ELECTRIC
MH32S72BBFA Datasheet PDF : 56 Pages
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MITSUBISHI LSIs
MH32S72BBFA -7,-8
2,415,919,104-BIT ( 33,554,432-WORD BY 72-BIT ) Synchronous DYNAMIC RAM
FUNCTION TRUTH TABLE
Current State
IDLE
ROW ACTIVE
READ
/S /RAS /CAS /WE Address
Command
Action
H
X
X
XX
L
H
H
HX
DESEL
NOP
NOP
NOP
L
H
H
L BA
TBST
ILLEGAL*2
L
H
L
X BA,CA,A10 READ/WRITE ILLEGAL*2
L
L
H
H BA,RA
L
L
H
L BA,A10
ACT
Bank Active,Latch RA
PRE/PREA NOP*4
L
L
L
HX
Op-Code,
L
L
L
L
Mode-Add
REFA
MRS
Auto-Refresh*5
Mode Register Set*5
H
X
X
XX
L
H
H
HX
DESEL
NOP
NOP
NOP
L
H
H
L BA
TBST
NOP
Begin Read,Latch CA,
L
H
L
H BA,CA,A10 READ/READA
Determine Auto-Precharge
WRITE/ Begin Write,Latch CA,
L
H
L
L BA,CA,A10
WRITEA Determine Auto-Precharge
L
L
H
H BA,RA
ACT
Bank Active/ILLEGAL*2
L
L
H
L BA,A10
PRE/PREA Precharge/Precharge All
L
L
L
HX
Op-Code,
L
L
L
L
Mode-Add
H
X
X
XX
REFA
MRS
DESEL
ILLEGAL
ILLEGAL
NOP(Continue Burst to END)
L
H
H
HX
L
H
H
L BA
NOP
TBST
NOP(Continue Burst to END)
Terminate Burst
Terminate Burst,Latch CA,
L
H
L
H BA,CA,A10 READ/READA Begin New Read,Determine
Auto-Precharge*3
Terminate Burst,Latch CA,
L
H
L
L BA,CA,A10 WRITE/WRITEABegin Write,Determine Auto-
Precharge*3
L
L
H
H BA,RA
ACT
Bank Active/ILLEGAL*2
L
L
H
L BA,A10
L
L
L
HX
PRE/PREA Terminate Burst,Precharge
REFA
ILLEGAL
Op-Code,
L
L
L
L
Mode-Add
MRS
ILLEGAL
MIT-DS-331-0.0
MITSUBISHI
ELECTRIC
16/Jun. /1999 7
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