M2V28S20ATP View Datasheet(PDF) - MITSUBISHI ELECTRIC
Part Name
Description
Manufacturer
M2V28S20ATP Datasheet PDF : 51 Pages
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SDRAM (Rev. 1.0E)
Nov. '99
MITSUBISHI LSIs
128M Synchronous DRAM
M2V28S20ATP -6,-6L,-7,-7L,-8,-8L (4-BANK x 8,388,608-WORD x 4-BIT)
M2V28S30ATP -6,-6L,-7,-7L,-8,-8L (4-BANK x 4,194,304-WORD x 8-BIT)
M2V28S40ATP -6,-6L,-7,-7L,-8,-8L (4-BANK x 2,097,152-WORD x 16-BIT)
FUNCTION TRUTH TABLE
Current State /CS /RAS /CAS /WE Address
Command Action
IDLE
H X X XX
DESEL NOP
L H H HX
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 Bank Active, Latch RA
L L H L BA, A10
PRE /
NOP*4
PREA
L L L HX
REFA Auto-Refresh*5
Op-Code,
LLLL
Mode-Add
ROW ACTIVE H X X X X
MRS Mode Register Set*5
DESEL NOP
L H H HX
NOP NOP
L H H L BA
TBST NOP
L
H
L
H BA, CA, A10
READ / Begin Read, Latch CA, Determine
READA Auto-Precharge
L
H
L
L BA, CA, A10 WRITE / Begin Write, Latch CA, Determine
WRITEA Auto-Precharge
L L H H BA, RA
ACT Bank Active / ILLEGAL*2
L L H L BA, A10
PRE /
Precharge / Precharge All
PREA
L L L HX
Op-Code,
L
L
L
L Mode-Add
REFA ILLEGAL
MRS ILLEGAL
MITSUBISHI ELECTRIC
7
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