Watchdog circuit
The present invention relates to a watchdog circuit for monitoring the function of a processor, in which the processor outputs a cyclically repeating test signal to the watchdog circuit, and the watchdog circuit generates a reset signal for the processor if the test signal does not appear in a time...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
08.10.2002
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| Online Access | Get full text |
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| Summary: | The present invention relates to a watchdog circuit for monitoring the function of a processor, in which the processor outputs a cyclically repeating test signal to the watchdog circuit, and the watchdog circuit generates a reset signal for the processor if the test signal does not appear in a time slot specified by the watchdog circuit.
A watchdog circuit (WD) monitors the function of the processor (MC) in that the processor (MC) outputs a cyclically repeating test signal to the watchdog circuit (WD), and the watchdog circuit (WD) generates a reset signal (RST) for the processor (MC) if the test signal (WDS) does not appear in a time slot (SS) specified by the watchdog circuit (WD). The width of the time slot (SS) can be increased in the starting phase of a program sequence of the processor (MC). |
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