Circuital device for the power-on reset of digital integrated circuits in MOS technology
US4874965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1987 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power-on reset circuit for supplying a reset pulse when a supply voltage rises above a preset threshold includes a reference voltage generator connected between the supply voltage and ground for supplying a reference signal having a constant preset value when the supply voltage is greater than the preset threshold. A supply follower provides an input signal which follows the supply voltage with a preset reduction factor. A bistable comparator having a first input driven by the reference signal and a second input driven by the input signal switches from a first state to a second state when the input signal exceeds the reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.