Programmable logic device with partial battery backup
US6441641B1 · kind B1 · utility
101Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/76
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A PLD can be manufactured to include power supply lines from two sources so that a portion of the PLD can be backed up with a battery when power to the PLD is removed. A switch that supplies power to the backed up portion of the PLD receives power from both an external power supply and from the battery, and detects voltage level of the external power supply, switching to battery power when voltage from the external power supply is not sufficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.