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
L
L
L
X
H
H
H
L
X
H
H
L
X
H
L
X
X
DESEL
NOP
NOP (Idle after tRP)
NOP (Idle after tRP)
ILLEGAL*2
PRE -
CHARGING
TBST
BA
READ /
WRITE
X
H
L
BA, CA, A10
BA, RA
BA, A10
X
ILLEGAL*2
H
H
ACT
ILLEGAL*2
PRE /
PREA
L
NOP*4 (Idle after tRP)
L
L
L
L
L
L
H
L
REFA
MRS
ILLEGAL
ILLEGAL
Op-Code,
Mode-Add
ROW
H
L
X
H
X
H
X
H
X
X
DESEL
NOP
NOP (Row Active after tRCD)
NOP (Row Active after tRCD)
ACTIVATING
L
L
L
L
L
L
H
H
L
L
L
L
H
L
H
H
L
L
L
X
H
L
TBST
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL
BA
READ /
WRITE
BA, CA, A10
BA, RA
BA, A10
X
ACT
PRE /
PREA
H
L
REFA
MRS
Op-Code,
ILLEGAL
Mode-Add
JULY.2000
Rev.2.2
Page-10