MITSUMI

System Reset (Built-in Watch Dog Timer) MM1099

Block Diagram

MM1099A

~

- 305k

~

- 195k

MM1099B

~

- 350k

~

- 150k

Note 1. Cp = approx. 0.1µF

Note 2. C ~

- 1000pF

Note 3. The watchdog timer can be stopped by grounding the RCT pin.

(Function as voltage detection circuit.)

Timing Chart

1

2

3 4 5

5

6 7

8

9

10

11 12

CK

RESET

0.3V