Zero power fuse circuit using subthreshold conduction
US6191641A · kind A · utility
9Cited by
5References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Feb 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A zero static power laser fuse circuit is formed from one laser fuse and three transistors, with the fuse connected in series to a reverse-biased diode and with the common node of the fuse and diode connected to the input of a driving circuit, such as a CMOS inverter. Blowing the fuse allows a small subthreshold conduction current to flow to the common node and pull the node to the opposite logic state. This fuse circuit, which allows the capacitance at the common node to be minimized for zero static power operation, requires less circuit area than previous zero static power fuse circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.