Programmable POR circuit with two switching thresholds
US6897689B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power on reset circuit (POR) includes a first reset circuit for delivering a first reset signal when a supply voltage of the POR circuit is between a first low threshold and a first high threshold, and a second reset circuit for delivering a second reset signal when the supply voltage is between a second low threshold and a second high threshold. The second high threshold is less than the first high threshold. The POR circuit further includes at least one electrically erasable and programmable non-volatile memory cell. A delivery circuit outputs the first reset signal or the second reset based upon whether the at least one electrically erasable and programmable non-volatile memory cell is in an erased or programmed state. The POR circuit has a threshold for outputting the first or second reset signal that is programmable according to the intended application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.