Wake-up circuit
US6509767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Sep 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wake-up contains a controller provided with an analog voltage input terminal, a trigger signal input terminal, and first and second output terminals and enabled to control an external device according to a voltage value entered to the analog voltage input terminal and output a high level voltage via the first output terminal in a sleep state and output a low level voltage via the second output terminal upon applying of a voltage to the trigger signal input terminal, thereby it is woken up; resistance value changing means provided with a plurality of switches and a plurality of resistors; pull-up means; and wake-up trigger signal generating means. The wake-up trigger signal generating means outputs a trigger signal when the voltage of the resistance value changing means changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.