Integrated circuit devices with power supply detection circuitry
US6549032B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Aug 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Integrated circuit devices are provided that include power detection circuits that indicate whether power supplies have reached functional voltage levels. The power detection circuits include latches coupled to power supplies that can detect whether all the power supplies have reached functional voltage levels, logic circuits to provide appropriate output signals, and well bias circuits that supply current to the power detection circuits. Well bias circuits provide current from first power supplies to reach functional voltage levels so that indication may be provided from the power detection circuit without requiring functional voltage levels of all power supplies. Outputs from power detection circuits can be combined with control signals, for various applications. Applications include holding an integrated circuit device in reset until power supplies have reached functional voltage levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.