ha16117fpc Renesas Electronics Corporation., ha16117fpc Datasheet - Page 9

• Manufacturer Part Number: ha16117fpc
• Description: Cmos Watchdog Timer
• Manufacturer: Renesas Electronics Corporation.

2. With a low-frequency P-RUN signal ( 13 Hz to 26 Hz)
P-RUN
RES
WD
C
C
Q
Q
A
B
C
R
F
3.6 V
0.9 V
3.2 V
1.6 V
5 V
0 V
5 V
0 V
When f
duty is 25% or above, multivibrator (power-on and auto-reset circuit) oscillation stops. As a
result, the RES signal is fixed high.
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
P-RUN
20 ms
is 13 Hz to 26 Hz, the WD duty (D = 100
60 ms
40 ms (25 Hz)
t
1
5 s
t
33 ms
2
2T
t
2
/2T) is 25% to 50%. When the WD
HA16117F Series
9