General Description

The MIC1232 is a multifunction circuit which monitors microprocessor activity, external reset and power supplies in microprocessor based systems. The circuit functions include a watchdog time, power supply monitor, microprocessor reset, and manual pushbutton reset input.

Features

• Power OK/Reset time delay, 250ms min.

• Watchdog timer, 150ms, 600ms, or 1.2s typical

• Precision supply voltage monitor, select between 5% or 10% of supply voltage

• Available in 8-pin surface mount (SO)

• Debounced External reset input

• Low supply current, <18µA typical

Applications

• Automotive systems

• Intelligent systems

• Critical microprocessor power monitoring

• Battery powered computers

• Controllers