MB3793-34A

Document Number: 002-08556 Rev. *A

Page 15 of 26

the MB3793 cancels the reset signal and starts operating the watchdog timer.

The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses. If no clock pulse is input, the MB3793

repeats operations (6) and (7).

signal (setting the RESET pin to “L” level from “H” level).

repeats operations 4 and 5 as long as the CK1/CK2 pin inputs clock pulses.

11.Making the inhibit pin active (setting the INH pin to “H” from “L”) forces the watchdog timer to stop operation.

The watchdog timer remains inactive unless the inhibit input is canceled.

The inhibition (INH) pin must be connecting a voltage of more low impedance, to evade of the noise.

12.Cancelling the inhibit input (setting the INH pin to “L” from “H”) restarts the watchdog timer.

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Values of A, B, C, and D

specification value.

ABCD

Remark

1300

1500

0

100

time

(ms)

Symbol

130

15

10

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