HA16117FPA RENESAS [Renesas Technology Corp], HA16117FPA Datasheet - Page 9

• Manufacturer Part Number: HA16117FPA
• Description: CMOS Watchdog Timer
• Manufacturer: RENESAS [Renesas Technology Corp]

HA16117F Series
2. With a low-frequency P-RUN signal (≈ 13 Hz to 26 Hz)
Rev.3.00 Jun 15, 2005 page 9 of 30
P-RUN
RES
WD
C
C
Q
Q
C
A
B
R
F
3.6 V
0.9 V
3.2 V
1.6 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.
5 V
0 V
5 V
0 V
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