Integrated circuit with programmable fuse array
US6876594B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2216/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit (IC). The integrated circuit comprises an array (14) of data cells arranged in a plurality of rows and a plurality of columns. Each of the data cells comprises an electrically programmable fuse (40), and each electrically programmable fuse comprises a current path for providing a first digital state when the current path is left intact and for providing a second digital state when the current path is destroyed. Each row of the plurality of rows comprises at least one cell reserved for providing a protection indicator for the row, wherein the protection indicator is selected from a set consisting of read protection and write protection. The integrated circuit also comprises control circuitry (12) for selectively destroying the programmable fuse in selected ones of the data cells in a programmation mode. The integrated circuit also comprises control circuitry (12) for reading selected ones of the data cells in a read mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.