Circuit to indicate the status of a supply voltage
US6574577B2 · kind B2 · utility
37Cited by
13References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/263
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system includes a processor, a voltage regulator and a circuit. The processor uses a first supply voltage to furnish a first indication of a second supply voltage to be received by the processor. The voltage regulator furnishes the second supply voltage in response to both the first indication and a second indication that the first supply voltage is valid. The circuit provides the second indication and regulates a timing of the second indication to prevent the voltage regulator from furnishing the second supply voltage until a predefined interval of time has elapsed after the first supply voltage becomes valid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.