M2V64S20DTP 查看數據表（PDF） - Mitsumi
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M2V64S20DTP Datasheet PDF : 51 Pages
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MITSUBISHI LSIs
SDRAM (Rev.3.2)
Feb.'00
M2V64S20DTP-6,-6L,-7,-7L,-8,-8L (4-BANK x 4,194,304-WORD x 4-BIT)
M2V64S30DTP-6,-6L,-7,-7L,-8,-8L (4-BANK x 2,097,152-WORD x 8-BIT)
M2V64S40DTP-6,-6L,-7,-7L,-8,-8L (4-BANK x 1,048,576-WORD x 16-BIT)
64M Synchronous DRAM
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 LX
TBST ILLEGAL*2
READ &
L H L X BA, CA, A10
ILLEGAL*2
WRIT E
L L H H BA, RA
ACT Bank Active, Latch RA
L L H L BA, A10
PRE &
PREA
NOP*4
L L L HX
REFA Auto-Refresh*5
Op-Code,
LLLL
Mode-Add
MRS Mode Register Set*5
ROW ACT IVE H
X
X
XX
DESEL NOP
L H H HX
NOP NOP
L H H LX
TBST NOP
READ & Begin Read, Latch CA, Determine
L
H
L
H BA, CA, A10
READA
Auto-Precharge
WRITE & Begin Write, Latch CA, Determine
L H L L BA, CA, A10
WRITEA Auto-Precharge
L L H H BA, RA
L L H L BA, A10
ACT
PRE &
PREA
Bank Active / ILLEGAL*2
Precharge / Precharge All
L L L HX
Op-Code,
L
L
L
L Mode-Add
REFA ILLEGAL
MRS ILLEGAL
MITSUBISHI ELECTRIC
7
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