Area efficient method for programming electrical fuses
US6426911B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Oct 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit for programming electrical fuses, in accordance with the present invention, includes a shift register including a plurality of latches. Each latch has a corresponding switch and a corresponding electrical fuse. A bit generator generates a single bit of a first state and all other bits of a second state. The bit generator propagates the generated bits into the shift register in accordance with a clock signal. Each switch enables conduction through the corresponding electrical fuse in accordance with the generated bits stored in the corresponding latch. A blow voltage line connects to the electrical fuses. The blow voltage line is activated to blow fuses in accordance with programming data such that the electrical fuses are programmed in accordance with the programming data when the single bit of the first state is stored in the latch corresponding to the fuse to be programmed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.