Power-on reset circuit
US11431335B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2021 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Sep 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A power-on reset circuit, including: a band-gap reference circuit, a current comparator, and a voltage comparison circuit powered by a voltage source; a first output terminal of the band-gap reference circuit connects to a control terminal of the current comparator; a first current input terminal and a second current input terminal of the current comparator receives a first current signal and a second current signal respectively, and an output terminal of the current comparator connects to a control terminal of the voltage comparison circuit; and a first input terminal of the voltage comparison circuit connects to the first output terminal of the band-gap reference circuit, a second input terminal thereof receives a signal indicating a voltage value of the voltage source, an output terminal thereof outputs a reset signal, thereby avoiding occurrence of an error caused by output of the reset signal when the reference generating circuit is unstable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.