Self-terminating blow process of electrical anti-fuses
US6642602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An anti-fuse system composed of a multiplicity of anti-fuse circuits (24, 26, 28, N) connected across a voltage source (10) by a pair of conductors (16, 18). Each anti-fuse circuit comprising an anti-fuse (30) connected in a series with a blow or control transistor (36) and a control circuit (44) for monitoring the status of the anti-fuse (30), Control circuit (44) provides an “on” signal to the gate (38) of control transistor (36) only when a_“select_” signal is received at an input (46) of control circuit (44) and if anti-fuse (30) has not been blown. After the anti-fuse (30) is blown, control circuit (44) turns off the control transistor (36) thereby providing a constant power source voltage across each anti-fuse circuit (24, 26, 28, N) regardless of the number of parallel anti-fuses which have been blown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.