Self current limiting antifuse circuit
US5631862A · kind A · utility
52Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Mar 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An antifuse bank includes a bank of self-decoupling antifuse circuits. The antifuse circuits are programmed according to a pattern of address bits by blowing antifuses corresponding to bits of the address. The antifuses are blown by applying a high voltage across the antifuse. As each antifuse is blown, its resistance drops and current through the antifuse increases. The self-decoupling circuit detects the increased current flow and, when the antifuse resistance is sufficiently low, limits current flow through the antifuse. The antifuse thus does not load the high voltage source as other antifuses are blown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.