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| HA16117F Datasheet, PDF (18/31 Pages) Hitachi Semiconductor – CMOS Watchdog Timer | |||
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HA16117F Series
Operating Characteristics and Test Circuits
5V
VTL
VCC
0V
5V
RES
0V
5V
P-RUN
0V
5V
RES
0V
tON
50 ms/div
time
Power-on reset time (tON)
SW,OFF
tOFF
50 ms/div
time
Reset-clock off time (tOFF)
5V
0V
0.01 µ
510 k
VCC
Tadj
P-RUN ACC
750 k
CF
CR
0.1 µ
GND
RES
Oscilloscope
Circuit for measuring tON
5V
0V
5V
f = 500Hz
duty 50%
50â°
VCC
Tadj
P-RUN ACC
CF
GND
510 k
750 k
CR
RES
0.01 µ
0.1 µ
Oscilloscope
Circuit for measuring tOFF
tRH
5V
RES
CR
0V
tRL
5V
0.01 µ
510 k
VCC
Tadj
P-RUN ACC
750 k
CF
CR
0.1 µ
GND
RES
Oscilloscope
Oscilloscope
20 ms/div
time
RES and CR waveforms at detect abnormal conditions
Circuit for measuring RES and CR waveforms
18
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