Outline

This IC functions in a variety of CPU systems and other logic systems to generate a reset signal and reset the system accurately during momentary interruption or lowering of power supply voltage.

It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.

Features

1. Built-in watchdog timer

2. Low minimum operating voltage 130µA typ.

3. Low operating limit voltage VCC=0.8V

4. Watchdog stop function (RCT pin)

5. Long clock monitoring time

TPR (POWER ON) : TWD (clock monitoring)=1 : 5

6. Few external parts

Applications

1. Reset circuits in microcomputers, CPUs and MPUs

2. Logic circuit reset circuits

3. Microcomputer system monitoring, etc.