DMC73CE167 データシートの表示（PDF） - Daewoo Semiconductor
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DMC73CE167 Datasheet PDF : 90 Pages
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8Bit Single Chip Microcontroller
11
DMC73C167
3.4 AC Characteristics
I/O Port
Parameter
I/O Port output
rise time
I/O Port output
fall time
Port
SCL SDA B0-B7
PWM1_n*
Except SCL, SDA,
B0-B7, PWM1_n
SCL SDA B0-B7
PWM1_n*
Except SCL, SDA,
B0-B7, PWM1_n
Conditions Min Typ Max
CL=50pF
1
CL=15pF
CL=50pF
CL=50pF
30
60
150
1
CL=15pF
CL=50pF
10
40
70
* External pull-up registers are needed in PWM1_n, B0-B3.
External pull-up registers are also needed in SCL, SDA. The values would be recommendable
to fit rise and falling time of I2C spec.
Unit
us
ns
us
ns
Clock I/O
Clock pulse
Parameter
Rise time
Fall time
Duty cycle
Symbol
tr(c)
tf(c)
dty(c)
Min Typ Max Unit
20
ns
10
ns
45
50
55
%
Y
X
X or Y
DUTY(%) =
x 100
Tc(c)
Tc(c) = X + Y
Note : Timing points are 90%(high) and 10%(low).
- Externally Driven Clock Input Waveform -
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DAEWOO ELECTRONICS CO., LTD.
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