MK31VT872A-8YC 98.06.26
FUNCTION TRUTH TABLE (Table1)(1/2)
Current State
/CS
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
/RAS
X
H
H
H
L
/CAS
X
H
H
L
/WE BA
ADDR
X
Action
Idle
X
H
L
X
H
L
H
L
X
X
H
L
H
L
X
X
H
L
H
L
H
L
X
X
H
L
H
L
H
L
X
X
H
L
X
X
NOP
NOP
X
X
CA
RA
A10
X
BA
BA
BA
BA
X
L
X
X
BA
BA
BA
BA
X
ILLEGAL 2
ILLEGAL 2
Row Active
NOP 4
H
H
L
L
L
L
X
H
H
H
L
Auto-Refresh or Self-Refresh 5
L
OP Code Mode Register write
Row Active
X
H
L
X
X
NOP
NOP
Read
CA,A10
CA,A10
RA
A10
L
Write
H
H
L
X
H
H
L
ILLEGAL 2
L
L
Precharge
ILLEGAL
X
X
X
X
Read
X
H
H
H
H
L
X
X
NOP(Continue Row Active after Burst ends)
NOP(Continue Row Active after Burst ends)
Burst Stop
BA
BA
BA
BA
BA
X
CA,A10
CA,A10
RA
A10
Term Burst,start new Burst Read 3
Term Burst,start new Burst Write 3
ILLEGAL 2
L
H
H
L
X
H
H
L
L
L
Term Burst,execute Row Precharge
ILLEGAL
X
X
X
X
Write
X
H
H
H
H
L
X
X
NOP(Continue Row Active after Burst ends)
NOP(Continue Row Active after Burst ends)
Burst Stop
BA
BA
BA
BA
BA
X
CA,A10
CA,A10
RA
A10
Term Burst,start new Burst Read 3
Term Burst,start new Burst Write 3
ILLEGAL 2
L
H
H
L
X
H
H
L
L
H
L
X
H
H
L
L
H
L
L
L
Term Burst,execute Row Precharge 3
ILLEGAL
X
X
X
X
NOP(Continue Burst to End and enter Row Precharge)
Read with
Auto Precharge
X
H
H
H
H
L
X
X
NOP(Continue Burst to End and enter Row Precharge)
BA
BA
X
BA
X
ILLEGAL 2
H
L
CA,A10
ILLEGAL 2
X
ILLEGAL
X
X
X
H
L
H
L
X
X
RA,A10
ILLEGAL 2
L
X
X
X
ILLEGAL
NOP(Continue Burst to End and enter Row Precharge)
Write with
Auto Precharge
X
H
H
H
H
L
X
X
NOP(Continue Burst to End and enter Row Precharge)
BA
BA
X
BA
X
X
CA,A10
X
RA,A10
X
ILLEGAL 2
ILLEGAL 2
ILLEGAL
ILLEGAL 2
ILLEGAL
L
OKI [ OKI ELECTRONIC COMPONETS ]
