HA16117FPA RENESAS [Renesas Technology Corp], HA16117FPA Datasheet - Page 12

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HA16117FPA

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

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HA16117F Series
5. t
Rev.3.00 Jun 15, 2005 page 12 of 30
OFF
when P-RUN signal ≈ 90 kHz
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 the P-RUN frequency is high, even though within specification, the C
falls. If the P-RUN frequency falls sharply at this time, t
With values of C
P-RUN frequency is 20 kHz or below.
5 V
0 V
5 V
0 V
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
f
P_RUN
2.3 V
F
= 0.01 F and C
90 kHz
26 ms
R
t
OFF
= 0.1 F, the C
50 ms
R
pin potential will not fall as long as the
OFF
may be short.
R
pin potential

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