CPU reset circuit

Details CPU reset circuit CPU reset circuit

1996-05-22

1997-07-29

Beausoliel, Jr., Robert W.

Excavating

371 62, G01R 3128, G06F 1100

Patent

active

056528361

ABSTRACT:
A circuit for resetting a system controller includes a level detector and a watch-dog circuit. The level detector compares a first reference voltage with a supply voltage provided to the system, and provides output of a first reset signal indicating that the controller is in an abnormal state in dependence upon the comparison between the first reference voltage and the supply voltage. The watch-dog circuit compares a second reference voltage with a voltage exhibited by the first reset signal, and provides output of a second reset signal to the controller to reset the controller in dependence upon the comparison between the second reference voltage and the voltage exhibited by the first reset signal. A connector provides the first reset signal from the level detector to the watch-dog circuit.

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