參數(shù)資料
型號: MSM80C40
廠商: OKI SEMICONDUCTOR CO., LTD.
元件分類: 8位微控制器
英文描述: CMOS 8-Bit Microcontroller
中文描述: 的CMOS 8位微控制器
文件頁數(shù): 30/39頁
文件大?。?/td> 355K
代理商: MSM80C40
30/38
Semiconductor
MSM80C31F/80C51F
External Data Memory Access AC Characteristics 1
(V
CC
= 5 V
±
20%, V
SS
= 0 V, Ta = –40
°
C to +85
°
C; load capacitance for Port 0, ALE, and
PSEN
=
100 pF ; load capacitance for all other outputs = 80 pF)
Parameter
Symbol
Min.
126
43
Max.
Unit
XTAL1, XTAL2 Oscillation Cycle
ALE Single Width
Adderss Setup Time
(to ALE Falling Edge)
Adderss Hold Time
(from ALE Falling Edge)
RD
Single Width
WR
Single Width
RAM Data Read Time
(from
RD
Single Falling Edge)
RAM Data Read Hold Time
(from
RD
Single Rising Edge)
Data Bus Floating Time
(from
RD
Single Rising Edge)
RAM Data Read Time
(from
ALE
Single Falling Edge)
RAM Data Read Time
(from Address Output)
RD
/
WR
Output Time from
ALE Falling Edge
RD
/
WR
Output Time from
Address Output
RD
Output Time from Data Output
Time from Data Output to
WR
Rising Edge
Data Hold Time (
WR
Rising Edge)
Time from
RD
Output to
Address Float
Time from
RD
/
WR
Rising
Edge to ALE Rising Edge
t
CLCL
t
LHLL
t
AVLL
ns
ns
ns
Max.
Min.
62.5
2t
CLCL
– 40
1t
CLCL
– 40
t
LLAX
48
ns
1t
CLCL
– 35
12 MHz Clock
Variable Clock
See Guaranteed
Operating Range
t
RLRH
t
WLWH
t
RLDV
400
400
ns
ns
ns
251
6t
CLCL
– 100
6t
CLCL
– 100
5t
CLCL
– 165
t
RHDX
0
ns
0
t
RHDZ
2t
CLCL
– 70
ns
96
t
LLDV
8t
CLCL
– 150
ns
516
t
AVDV
9t
CLCL
– 165
ns
585
t
LLWL
200
3t
CLCL
+ 50
ns
300
3t
CLCL
– 50
t
AVWL
203
ns
4t
CLCL
– 130
t
QVWX
t
QVWH
23
433
ns
ns
1t
CLCL
– 60
7t
CLCL
– 150
t
WHQX
t
RLAZ
33
0
ns
ns
0
1t
CLCL
– 50
t
WHLH
43
1t
CLCL
+ 50
ns
133
1t
CLCL
– 40
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