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
L
X
H
H
X
H
H
X
H
L
X
X
DESEL
READ with
AUTO
NOP (Continue Burst to END)
NOP
PRECHARGE
NOP (Continue Burst to END)
ILLEGAL
TBST
BA
READ /
READA
WRITE /
WRITEA
L
H
L
H
BA, CA, A10
ILLEGAL
L
L
H
L
L
L
BA, CA, A10
BA, RA
ILLEGAL
H
H
ACT
Bank Active / ILLEGAL*2
PRE /
PREA
L
L
L
L
H
L
L
BA, A10
X
ILLEGAL*2
ILLEGAL
H
REFA
MRS
Op-Code,
L
H
L
L
L
X
H
H
L
X
H
H
L
X
H
L
ILLEGAL
Mode-Add
X
X
DESEL
NOP
WRITE with
AUTO
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
PRECHARGE
TBST
BA
READ /
READA
WRITE /
WRITEA
L
L
H
H
L
L
H
L
BA, CA, A10
BA, CA, A10
ILLEGAL
ILLEGAL
Bank Active / ILLEGAL*2
L
L
L
L
L
L
L
L
H
H
L
L
H
L
H
L
BA, RA
BA, A10
X
ACT
PRE /
PREA
ILLEGAL*2
ILLEGAL
ILLEGAL
REFA
MRS
Op-Code,
Mode-Add
JULY.2000
Rev.2.2
Page-9
VML [ VANGUARD INTERNATIONAL SEMICONDUCTOR ]
