Repair circuit and fuse circuit
US9287009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2015 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Jan 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/4402
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A repair circuit includes first and second fuse circuits, a determination circuit and an output circuit. The first fuse circuit includes a first fuse and is configured to generate a first master signal indicating whether the first fuse has been programmed. The second fuse circuit includes second fuses and is configured to generate a first address indicating whether each of the second fuses has been programmed. The determination circuit is configured to generate a detection signal based on the first master signal and the first address. The detection signal indicates whether a negative program operation has been performed on the second fuse circuit. The output circuit is configured to generate a second master signal based on the first master signal and the detection signal and generate a repair address corresponding to a defective input address based on the first address and the detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.