Low power power-on-reset (POR) circuit
US8344767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one general aspect, an apparatus can include a first voltage detect circuit configured to produce an output signal at a first power supply voltage, and configured to be in a non-monitoring state at a second power supply voltage greater than the first power supply voltage. The apparatus can include a second voltage detect circuit configured to change from a non-monitoring state to a monitoring state and configured to produce an output signal at a third power supply voltage between the first power supply voltage and the second power supply voltage. The apparatus can also include a combination circuit configured to produce a power-on-reset signal based on a logical combination of the output signal produced by the first voltage detect circuit and the output signal produced by the second voltage detect circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.