參數(shù)資料
型號: IC42S81600L-7TIG
英文描述: 4(2)M x 8(16) Bits x 4 Banks (128-MBIT) SYNCHRONOUS DYNAMIC RAM
中文描述: 4(2)M中的x 8(16)位× 4銀行(128 - Mbit的)同步動態(tài)RAM
文件頁數(shù): 3/69頁
文件大?。?/td> 1118K
代理商: IC42S81600L-7TIG
IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
Integrated Circuit Solution Inc.
11
DR023-0E 6/11/2004
COMMAND TRUTH TABLE
CKE
A11
Symbol
Command
n-1
n
CS
RAS
CAS
WE
BA
A10 A9-A0
DESL
Device deselect
H
X
H
XXX
XX
X
NOP
No operation
HX
L
H
X
MRS
Mode register set
H
X
LLLL
LL
V
ACT
Bank activate
HX
L
H
V
READ
Read
HX
L
H
L
H
V
L
V
READA
Read with auto precharge
HX
L
H
L
H
VH
V
WRIT
Write
HX
L
H
L
V
L
V
WRITA
Write with auto precharge
HX
L
H
L
VH
V
PRE
Precharge select bank
HX
L
H
L
V
L
X
PALL
Precharge all banks
HX
L
H
L
X
H
X
BST
Burst stop
HX
L
H
L
X
REF
CBR (Auto) refresh
H
LLL
H
X
SELF
Self refresh
H
L
LLL
H
X
Notes:
H : High level
L : Low level
X : High or Low level (Don’t care)
V : Valid Data input
DQM TRUTH TABLE
CKE
Symbol
Command
n-1
n
DQM
ENB
Data Write / Output Enable
H
X
L
MASK
Data Mask / Output Disable
H
X
H
CKE TRUTH TABLE
CKE
Symbol
Command
Current State
n-1
n
CS
RAS
CAS
WE
Addreess
Clock suspend mode entry
Activating
H
L
XXX
X
Clock suspend
Any
L
XXX
X
Clock suspend mode exit
Clock suspend
L
H
XXX
X
REF
CBR refresh command
Idle
H
LLL
H
X
SELF
Self refresh entry
Idle
H
LLLL
H
X
Self refresh exit
Self refresh
L
H
L
HHH
X
LH
H
X
Power down entry
Idle
H
L
XXX
X
Power down exit
Power down
L
H
XXX
X
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