128Mb Synchronous DRAM
P2V28S20ATP-7,-75,-8 (4-BANK x 8,388,608-WORD x 4-BIT)
P2V28S30ATP-7,-75,-8 (4-BANK x 4,194,304-WORD x 8-BIT)
P2V28S40ATP-7,-75,-8 (4-BANK x 2,097,152-WORD x 16-BIT)
FUNCTION TRUTH TABLE (continued)
Current State
/CS /RAS /CAS /WE Address
Command Action
H
L
X
H
X
H
X
H
DESEL
NOP
X
X
NOP
NOP
WRITE
RECOVERING
L
L
L
L
H
H
L
L
H
L
L
X
H
L
BA
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
TBST
READ /
WRITE
BA, CA, A10
BA, RA
BA, A10
H
H
ACT
PRE /
PREA
L
L
L
L
L
L
H
L
X
REFA
MRS
ILLEGAL
ILLEGAL
Op-Code,
Mode-Add
REFRESHING
H
L
L
L
L
L
X
H
H
H
L
X
H
H
L
X
H
L
X
X
DESEL
NOP
NOP (Idle after tRC)
NOP (Idle after tRC)
ILLEGAL
TBST
BA
READ /
WRITE
X
H
L
BA, CA, A10
BA, RA
BA, A10
ILLEGAL
H
H
ACT
ILLEGAL
PRE /
PREA
L
ILLEGAL
L
L
L
L
L
L
H
L
X
REFA
MRS
ILLEGAL
ILLEGAL
Op-Code,
Mode-Add
JULY.2000
Rev.2.2
Page-11
VML [ VANGUARD INTERNATIONAL SEMICONDUCTOR ]
