Programmable fuse state determination system and method
US7030641B1 · kind B1 · utility
40Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Sep 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable fuse state determination system and method provide a fuse current through a programmed fuse which produces a voltage that varies with the fuse's resistance. The voltage is compared with a threshold voltage to indicate whether the fuse is blown or intact. The invention employs ‘normal’ and ‘test’ modes, in which the relationship between the fuse's resistance and the threshold voltage differ, such that a higher fuse resistance is required for the fuse to be determined blown in the ‘test’ mode than in the ‘normal’ mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.