M2V28S20ATP Datasheet, PDF (8/51 Pages) Mitsubishi Electric Semiconductor – 128M Synchronous DRAM

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 (continued)
Current State /CS /RAS /CAS /WE Address
Command Action
READ
WRITE
H X X XX
DESEL NOP (Continue Burst to END)
L H H HX
NOP NOP (Continue Burst to END)
L H H L BA
TBST Terminate Burst
READ Terminate Burst, Latch CA, Begin New
L H L H BA, CA, A10
/READA Read, Determine Auto-Precharge*3
WRITE / Terminate Burst, Latch CA, Begin
L
H
L
L BA, CA, A10 _{WRITEA Write, Determine Auto-Precharge*3}
L L H H BA, RA
ACT Bank Active / ILLEGAL*2
L L H L BA, A10
PRE /
Terminate Burst, Precharge
PREA
L L L HX
REFA ILLEGAL
Op-Code,
L LLL
Mode-Add
MRS ILLEGAL
H X X XX
DESEL NOP (Continue Burst to END)
L H H HX
NOP NOP (Continue Burst to END)
L H H L BA
TBST Terminate Burst
READ / Terminate Burst, Latch CA, Begin
L H L H BA, CA, A10
READA Read, Determine Auto-Precharge*3
L
H
L
L BA, CA, A10 ^{WRITE / Terminate Burst, Latch CA,Begin}
WRITEA Write, Determine Auto-Precharge*3
L L H H BA, RA
ACT Bank Active / ILLEGAL*2
L L H L BA, A10
PRE / _{Terminate Burst, Precharge}
PREA
L L L HX
REFA ILLEGAL
L
L
L
L ^Op-Code,
Mode-Add
MRS ILLEGAL
MITSUBISHI ELECTRIC
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