Integrated circuits with fuse programming and sensing circuitry
US8154942B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Jul 5, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuitry on an integrated circuit is provided that may be used to program fuses such as polysilicon fuses. Fuse programming may be performed using an elevated power supply voltage. Other circuitry on the integrated circuit may be powered using a standard power supply voltage that is less than the elevated power supply voltage. Fuse sensing may be performed using the standard power supply voltage. A control block may be used to produce a fuse programming control signal. Power-on-reset circuitry may monitor the elevated power supply voltage and may produce a corresponding elevated power supply voltage power-on-reset signal indicative of whether the elevated power supply voltage is valid. The power-on-reset circuitry may also produce a standard power supply power-on-reset signal indicative of whether the standard power supply voltage is valid. The power-on-reset signals may be used in controlling fuse programming and fuse sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.