HA16117 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

View to exact match

HA16117

CMOS Watchdog Timer

Hitachi -> Renesas Electronics 

HA16117F Series

5. tOFF when P-RUN signal 90 kHz

When the P-RUN frequency is high, even though within specification, the CR pin potential

falls. If the P-RUN frequency falls sharply at this time, tOFF may be short.

With values of CF = 0.01 µF and CR = 0.1 µF, the CR pin potential will not fall as long as the

P-RUN frequency is 20 kHz or below.

P-RUN

Q

Q

A

CF

WD

H

L

H

L

H

L

H

L

5V

3.6 V

0.9 V

0V

H

L

5V

3.2 V

CR

1.6 V

0V

H

B

L

H

C

L

H

RES

L

fP_RUN ≈ 90 kHz

50 ms

≈ 2.3 V

tOFF

26 ms

12

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