Watchdog circuit, power IC and watchdog monitor system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 9, 2019
Grant Date -
Feb 1, 2018
app pub date -
Sep 21, 2017
filing date -
Feb 1, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
A watchdog timer circuit for use in microcomputer monitor systems is disclosed. This circuit includes a timer circuit responsive to receipt of a count clock signal for counting it up, and a timer control circuit which loads an externally inputted data signal (stn) in sync with a timer refresh instruction (prun) and holds therein a sequentially loaded latest multi-bit data signal as reference data. When the reference data agrees with a predefined pattern and simultaneously another prespecified condition is met, the timer control circuit interrupts the clock signal counting operation of the timer circuit. During interruption of the counting operation, when the reference data does not agree with the predefined pattern or when the above-stated another prespecified condition becomes unsatisfied, the control circuit allows the timer circuit to restart the clock signal counting operation.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP5951429 | Sep 26, 2012 |
| EP | B1 | EP2624139 | Jan 31, 2013 |
| US | B2 | US9229521 | Jan 31, 2013 |
| CN | B | CN107589825 | Feb 01, 2013 |
| CN | B | CN103246577 | Feb 01, 2013 |
| CN | U | CN203191965 | Feb 01, 2013 |
| US | B2 | US9798602 | Nov 29, 2015 |
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G06F Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 9, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 9, 2031 |
