X4003 Datasheet (Intersil Corporation)

X4003, CPU Supervisor

These devices combine three popular functions, Power-on Reset Control, Watchdog Timer, and Supply Voltage Supervision.

This combination lowers system cost, reduces board space requirements, and increases reliability.

Applying power to the device activates the power-on reset circuit which holds RESET

X4003 Features

* Selectable watchdog timer

* Select 200ms, 600ms, 1.4s, off

* Low VCC detection and reset assertion

* Five standard reset threshold voltages nominal 4.62V, 4.38V, 2.92V, 2.68V, 1.75V

* Adjust low VCC reset threshold voltage using special programming sequence