HA16117F View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HA16117F

CMOS Watchdog Timer

Hitachi -> Renesas Electronics 

HA16117F Series

7. When P-RUN frequency fluctuates (2)

If there is a double-pulse in P-RUN, RES will not be output as long as the ratio of P-RUN

pulse interval minimum value to maximum value is 3 or less. The timing chart for a P-RUN

minimum interval of 8 ms and maximum interval of 22 ms is shown below.

H

P-RUN

L

H

Q

L

H

Q

L

H

A

L

5V

3.6 V

CF

0.9 V

0V

H

WD

L

5V

3.2 V

CR

1.6 V

0V

H

B

L

H

C

L

H

RES

L

8 ms

22 ms

14

Share Link: