參數(shù)資料
型號(hào)： MSM80C51F
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(yè)數(shù)： 35/39頁(yè)
文件大小： 355K
代理商： MSM80C51F
35/38
Semiconductor
MSM80C31F/80C51F
AC Characteristics Measuring Conditions
Input/output signal
V
OH
V
OL
V
IH
V
IL
V
IH
V
IL
TEST POINT
V
OH
V
OL
*
The input signals in AC test mode are either V
OH
(logic "1") or V
OL
(logic "0") input signals
where logic "1" corresponds to a CPU output signal waveform measuring point in excess of
V
IH
, and logic "0" to a point below V
IL
.
Floating
*
The port 0 floating interval is measured from the time the port 0 pin voltage drops below V
IH
after sinking to GND at 2.4 mA when switching to floating status from a "1" output, and from
the time the port 0 pin voltage exceeds V
IL
after connecting to a 400
m
A source when
switching to floating status from a "0" output.
V
OH
V
OL
V
IH
V
IL
V
IH
V
IL
Floating
V
OH
V
OL
XTAL1 External Clock Input Waveform Conditions
Parameter
Min.
DC
20
20
—
—
Max.
16
—
—
20
20
Unit
MHz
ns
ns
ns
ns
Symbol
Variable Clock
See Guaranteed Operating Range
External Clock Frequency
High Time
Low Time
Rise Time
Fall Time
1/t
CLCL
t
CHCX
t
CLCX
t
CLCH
t
CHCL
External clock waveform
0.7V
CC
0.2V
CC
– 0.1
t
CHCX
0.45 V
V
CC
– 0.5
t
CHCL
t
CLCH
t
CLCX
t
CLCL
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