P2V28S20ATP-7 View Datasheet(PDF) - Vanguard International Semiconductor
Part Name
Description
MFG CO.
'P2V28S20ATP-7' PDF : 51 Pages View PDF
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
WRITE
H X X XX
RECOVERING
L
H H HX
DESEL NOP
NOP NOP
L H H L BA
TBST ILLEGAL*2
L
H L X BA, CA, A10 READ / ILLEGAL*2
WRITE
L L H H BA, RA
ACT ILLEGAL*2
L L H L BA, A10
PRE / ILLEGAL*2
PREA
L L L HX
REFA ILLEGAL
L
L
L L Op-Code,
Mode-Add
MRS ILLEGAL
REFRESHING H X X X X
DESEL NOP (Idle after tRC)
L H H HX
NOP NOP (Idle after tRC)
L H H L BA
TBST ILLEGAL
L
H
L X BA, CA, A10 READ / ILLEGAL
WRITE
L L H H BA, RA
ACT ILLEGAL
L L H L BA, A10
PRE /
PREA
ILLEGAL
L L L HX
REFA ILLEGAL
L
L
L L Op-Code,
Mode-Add
MRS ILLEGAL
JULY.2000
Page-11
Rev.2.2
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