HA16117FA HITACHI [Hitachi Semiconductor], HA16117FA Datasheet - Page 12

• Manufacturer Part Number: HA16117FA
• Description: CMOS Watchdog Timer
• Manufacturer: HITACHI [Hitachi Semiconductor]

HA16117F Series
5. t
12
OFF
P-RUN
RES
when P-RUN signal 90 kHz
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