參數(shù)資料
型號(hào): M2V56S20AKT
廠商: Mitsubishi Electric Corporation
英文描述: 256M Synchronous DRAM
中文描述: 256M同步DRAM
文件頁數(shù): 6/49頁
文件大?。?/td> 244K
代理商: M2V56S20AKT
Feb.2000
MITSUBISHI LSIs
MITSUBISHI ELECTRIC
SDRAM (Rev.1.1)
Single Data Rate
M2V56S20/ 30/ 40/ TP -6, -7, -8
256M Synchronous DRAM
6
COMMAND TRUTH TABLE
NOTE:
1. A7-9,11-12=L, A0-A6 =Mode Address
H=High Level, L=Low Level, V=Valid, X=Don't Care, n=CLK cycle number
COMMAND
MNEMONIC
CKE
n-1
CKE
n
/CS
/RAS
/CAS
/WE
BA0,1
A10
/AP
A0-9,
11-12
Deselect
DESEL
H
X
H
X
X
X
X
X
X
No Operation
NOP
H
X
L
H
H
H
X
X
X
Row Address Entry &
Bank Activate
ACT
H
X
L
L
H
H
V
V
V
Single Bank Precharge
PRE
H
X
L
L
H
L
V
L
X
Precharge All Banks
PREA
H
X
L
L
H
L
H
X
Column Address Entry
& Write
WRITE
H
X
L
H
L
L
V
L
V
Column Address Entry
& Write with
Auto-Precharge
WRITEA
H
X
L
H
L
L
V
H
V
Column Address Entry
& Read
READ
H
X
L
H
L
H
V
L
V
Column Address Entry
& Read with
Auto-Precharge
READA
H
X
L
H
L
H
V
H
V
Auto-Refresh
REFA
H
H
L
L
L
H
X
X
X
Self-Refresh Entry
REFS
H
L
L
L
L
H
X
X
X
Self-Refresh Exit
REFSX
L
H
H
X
X
X
X
X
X
L
H
L
H
H
H
X
X
X
Burst Terminate
TBST
H
X
L
H
H
L
X
X
X
Mode Register Set
MRS
H
X
L
L
L
L
L
L
V
X
note
1
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