Patent · US Expired

Microprocessor circuit arrangement with watchdog circuit

US5440725A · kind A · utility

7Cited by

10References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hugo Weller · Oberriexingen, DE
Peter Taufer · Renningen, DE
Knut Balzer · Beilstein, DE
Wilfried Burger · Hemmingen, DE

Key dates

Filing date	May 18, 1994
Grant date	Aug 8, 1995
Priority date	—
Expiry date	May 18, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG06F11/1415
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a microprocessor circuit arrangement having a watchdog circuit, which monitors the proper program flow for the processor and which must be triggered in specific time intervals by the microprocessor, since otherwise it will reset (reset function) the microprocessor to the program start or the like. For reasons of simplification, it is proposed that when the microprocessor (2) recognizes that a malfunction has occurred, it spuriously triggers the watchdog circuit (5) in a selective manner to release a reset function coming from the watchdog circuit (5).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.