參數(shù)資料
型號: UPD46128953-X
廠商: NEC Corp.
英文描述: 128M-BIT CMOS MOBILE SPECIFIED RAM 4M-WORD BY 32-BIT ADDRESS / DATA MULTIPLEXED EXTENDED TEMPERATURE OPERATION
中文描述: 128兆位CMOS移動指明內(nèi)存分詞由32位地址/數(shù)據(jù)復(fù)用溫度范圍
文件頁數(shù): 51/60頁
文件大?。?/td> 468K
代理商: UPD46128953-X
P
5
μ
P
8
t
VPL
t
OVL
t
AS
t
AH
L
H
t
OHZM
t
AS
t
AH
t
WP
t
WP
t
WP
t
WHP
t
WHP
t
DW
t
DH
t
CS
t
CHZM
t
CP
t
CS
t
CS
t
CS
t
CS
t
CS
t
MSC
t
MSC
t
MSC
t
MSC
t
MSC
t
MSC
t
CP
t
CP
t
CP
t
CP
t
CP
t
VPL
t
VPL
t
VPL
t
VPL
t
VPL
t
DW
t
DH
t
DW
t
DH
t
DW
t
DH
t
DW
t
DH
t
AS
t
AH
t
AS
t
AH
t
AS
t
AH
t
AS
t
AH
t
AOSM
t
OLZM
t
ACM
t
OVL
t
AOSM
t
OLZM
t
ACM
t
AOSM
t
OLZM
t
ACM
t
OVL
Note
Note
Note
Note
Note
Note
Code1
Care
CLK (Input)
/ADV (Input)
/CE1 (Input)
/OE (Input)
A/DQ0 to A/DQ21 (Input/Output)
/WE (Input)
DQ22 to DQ31 (Input/Output)
1st Cycle
2nd Cycle
3rd Cycle
4th Cycle
5th Cycle
6th Cycle
Care
Don't
Don't
Don't
Don't
Code1
Code2
Code2
Code3
Code3
Figure 8-3. Mode Register Read Timing Chart
Note
Address
All “1” (3FFFFFH)
Remark
When setting the mode register, fix CLK to HIGH or LOW. If CLK is toggled, the mode register is not correctly set.
When the mode register is set, DM0 to DM3 are don’t care (HIGH or LOW).
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