Methods and systems for voltage reference power detection
US9086434B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Feb 9, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for detection and monitoring of power supply voltage and voltage reference circuitry are provided. In one embodiment of the invention, a first signal is set to be proportional to a power supply voltage in response to a determination from control circuitry that an output voltage of bandgap voltage reference circuitry is less than a first threshold voltage. The first signal is set to a logic low level in response to a determination from control circuitry that the output voltage of the bandgap voltage reference circuit is greater than the first threshold voltage, wherein the first threshold voltage is less than a bandgap reference voltage. A value of a reset signal is determined based at least in part on the first signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.