M2V64S20BTP View Datasheet(PDF) - MITSUBISHI ELECTRIC
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Description
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M2V64S20BTP Datasheet PDF : 52 Pages
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SDRAM (Rev.1.2)
Apr. '99
64M bit Synchronous DRAM
MITSUBISHI LSIs
M2V64S20BTP-7,-7L,-8,-8L,-8A,-10,-10L (4-BANK x 4194304-WORD x 4-BIT)
M2V64S30BTP-7,-7L,-8,-8L,-8A,-10,-10L (4-BANK x 2097152-WORD x 8-BIT)
M2V64S40BTP-7,-7L,-8,-8L,-8A,-10,-10L (4-BANK x 1048576-WORD x 16-BIT)
FUNCTION TRUTH TABLE
Current State /CS /RAS /CAS /WE Address
IDLE
H
X
X
XX
L
H
H
HX
L
H
H
L BA
L
H
L
X BA, CA, A10
L
L
H
H BA, RA
L
L
H
L BA, A10
L
L
L
HX
Op-Code,
L
L
L
L
Mode-Add
ROW ACTIVE H
X
X
XX
L
H
H
HX
L
H
H
L BA
L
H
L
H BA, CA, A10
READ
L
H
L
L BA, CA, A10
L
L
H
H BA, RA
L
L
H
L BA, A10
L
L
L
HX
Op-Code,
L
L
L
L
Mode-Add
H
X
X
XX
L
H
H
HX
L
H
H
L BA
L
H
L
H BA, CA, A10
L
H
L
L BA, CA, A10
L
L
H
H BA, RA
L
L
H
L BA, A10
L
L
L
HX
Op-Code,
L
L
L
L
Mode-Add
Command
Action
DESEL
NOP
NOP
NOP
TBST
ILLEGAL*2
READ / WRITE ILLEGAL*2
ACT
Bank Active, Latch RA
PRE / PREA NOP*4
REFA
Auto-Refresh*5
MRS
Mode Register Set*5
DESEL
NOP
NOP
NOP
TBST
NOP
Begin Read, Latch CA,
READ / READA
Determine Auto-Precharge
WRITE /
WRITEA
Begin Write, Latch CA,
Determine Auto-Precharge
ACT
Bank Active / ILLEGAL*2
PRE / PREA Precharge / Precharge All
REFA
ILLEGAL
MRS
ILLEGAL
DESEL
NOP (Continue Burst to END)
NOP
NOP (Continue Burst to END)
TBST
Terminate Burst
Terminate Burst, Latch CA,
READ / READA Begin New Read, Determine
Auto-Precharge*3
WRITE /
WRITEA
Terminate Burst, Latch CA,
Begin Write, Determine Auto-
Precharge*3
ACT
Bank Active / ILLEGAL*2
PRE / PREA Terminate Burst, Precharge
REFA
ILLEGAL
MRS
ILLEGAL
MITSUBISHI ELECTRIC
7
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