Apparatus and method for improving sensing margin of electrically programmable fuses
US7307911B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2006 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jul 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/027
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for sensing the state of a programmable resistive memory element device includes a latch device is coupled to a fuse node and a reference node, the fuse node included within a fuse leg and the reference node configured within a reference resistance leg. The latch device is configured to detect a differential signal developed between the reference node and the fuse node as the result of sense current passed through the fuse leg and the reference resistance leg. The fuse and reference resistance legs are further configured for first and second sensing modes, wherein the second sensing mode utilizes a different level of current than the first sensing mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.