M2S12D20TP データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M2S12D20TP Datasheet PDF : 38 Pages
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DDR SDRAM (Rev.1.1)
Feb.ME'0LITE2SCUTBRIISCHI
MITSUBISHI LSIs
M2S12D20/ 30TP -75, -75L, -10, -10L
512M Double Data Rate Synchronous DRAM
COMMAND TRUTH TABLE
COMMAND
Deselect
No Operation
Row Address Entry &
Bank Activate
Single Bank Precharge
Precharge All Banks
Column Address Entry
& Write
Column Address Entry
& Write with
Auto-Precharge
Column Address Entry
& Read
Column Address Entry
& Read with
Auto-Precharge
Auto-Refresh
Self-Refresh Entry
Self-Refresh Exit
Burst Terminate
Mode Register Set
MNEMONIC CKE CKE /CS
n-1 n
DESEL
H
X
H
NOP
H
X
L
ACT
H
H
L
PRE
PREA
H
H
L
H
H
L
WRITE
H
H
L
WRITEA
H
H
L
READ
H
H
L
READA
REFA
REFS
REFSX
TERM
MRS
H
H
L
H
H
L
H
L
L
L
H
H
L
H
L
H
H
L
H
H
L
/RAS /CAS /WE BA0,1 A10 A0-9, note
/AP 11-12
X
X
X
X
X
X
H
H
H
X
X
X
L
H
H
V
V
V
L
H
L
V
L
X
L
H
L
X
H
X
H
L
L
V
L
V
H
L
L
V
H
V
H
L
H
V
L
V
H
L
H
V
H
V
L
L
H
X
X
X
L
L
H
X
X
X
X
X
X
X
X
X
H
H
H
X
X
X
H
H
L
X
X
X1
L
L
L
L
L
V2
H=High Level, L=Low Level, V=Valid, X=Don't Care, n=CLK cycle number
NOTE:
1. Applies only to read bursts while autoprecharge is disabled; this command is undefined (and should not be used) during
read bursts while autoprecharge is enabled, as well as write bursts.
2. BA0-BA1 select either the Base or the Extended Mode Register (BA0 = 0, BA1 = 0 selects Mode Register;BA0=1 ,
BA1 = 0 selects Extended Mode Register; other combinations of BA0-BA1 are reserved; A0-A12 provide the
op-codes to be written to the selected Mode Register.
MITSUBISHI ELECTRIC
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