M2V56S20AKT-5 View Datasheet(PDF) - MITSUBISHI ELECTRIC
Part Name
Description
Manufacturer
M2V56S20AKT-5 Datasheet PDF : 51 Pages
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SDRAM (Rev.1.31)
Single Data Rate
Apr. '02
MITSUBISHI LSIs
M2V56S20/ 30/ 40 ATP
M2V56S20/ 30/ 40 AKT
256M Synchronous DRAM
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
RE-
H
X
X
XX
FRESHING L
H
H
HX
L
H
H
LX
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
MODE
H
X
X
XX
REGISTER L
H
H
HX
SETTING L
H
H
LX
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
Command
DESEL
NOP
TBST
READ / WRITE
ACT
PRE / PREA
REFA
MRS
DESEL
NOP
TBST
READ / WRITE
ACT
PRE / PREA
REFA
MRS
Action
NOP (Idle after tRFC)
NOP (Idle after tRFC)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Idle after tRSC)
NOP (Idle after tRSC)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ABBREVIATIONS:
H=High Level, L=Low Level, X=Don't Care
BA=Bank Address, RA=Row Address, CA=Column Address, NOP=No Operation
NOTES:
1. All entries assume that CKE was High during the preceding clock cycle and the current clock cycle.
2. ILLEGAL to bank in specified state; function may be legal in the bank indicated by BA, depending
on the state of that bank.
3. Must satisfy bus contention, bus turn around, write recovery requirements.
4. NOP to bank precharging or in idle state. May precharge bank indicated by BA.
5. ILLEGAL if any bank is not idle.
6. Refer to Read with Auto-Precharge in page 26
7. Refer to Write with Auto-Precharge in page 25
ILLEGAL = Device operation and/or data-integrity are not guaranteed.
MITSUBISHI ELECTRIC
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