MM1142 Datasheet (Mitsumi Electronics)

MM1142, System Reset

Pin No.

1 2 3 4 5 6 7 8 Pin name TC * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

www.DataSheet4U.com MITSUMI System Reset (with built-in watchdog timer) MM1142 System Reset (with built-in watchdog timer) Monolithic IC MM1142 Outline This IC was developed to drive low voltage batteries, and has a watchdog timer with built-in microcomputer reset voltage detection circuit and low battery detection circuit.

A single reference voltage is used for low battery voltage detection and microcomputer reset voltage .

detection, so detection voltage difference is uniform ( = .

0.2V).

MM1142 Features

* 1. Accurate voltage drop detection voltage 1. Low battery detection 2.2V±3% 2. Power supply voltage detection 2.0V±3% 3. Detection voltage error 0.2V±20mV 1-2 4. Hysteresis both 50mV typ. 2. Watchdog function stop pin (can be made to function only as reset IC during VCC rise) 3. Low current consumpt