Semiconductor integrated circuit including fuse circuit and method of manufacturing the same
US7489536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to an embodiment of the invention, a fuse circuit includes: a pair of fuses; and a comparator circuit connected with nodes on one end side of the fuses through separating switches. The nodes on one end side of the pair of fuses are further connected with a ground terminal through blow switches. The other ends of the pair of fuses are connected with, for example, a power supply potential. Each blow switch is turned ON at the time of blowing the pair of fuses to supply a current to the pair of fuses. Each separating switch separates the comparator circuit from the nodes on one end side at the time of blowing the pair of fuses. One of the pair of fuses is certainly blown upon programming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.