HA16117F Ver la hoja de datos (PDF) - Renesas Electronics

Número de pieza

componentes Descripción

Lista de partido

HA16117F

CMOS Watchdog Timer

Renesas Electronics 

HA16117F Series

2. With a low-frequency P-RUN signal (≈ 13 Hz to 26 Hz)

When fP-RUN is 13 Hz to 26 Hz, the WD duty (D = 100 × t2/2T) is 25% to 50%. When the WD

duty is 25% or above, multivibrator (power-on and auto-reset circuit) oscillation stops. As a

result, the RES signal is fixed high.

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

40 ms (25 Hz)

2T

t1 5 µs

t2

33 ms

3.2 V

CR

1.6 V

0V

H

B

L

H

C

L

H

RES

L

60 ms

20 ms

Rev.3.00 Jun 15, 2005 page 9 of 30

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