Electrical fuse circuit for security applications

Details Electrical fuse circuit for security applications Electrical fuse circuit for security applications

2010-09-14

2011-10-04

Pham, Thanh V (Department: 2894)

Semiconductor device manufacturing: process

Direct application of electrical current

To alter conductivity of fuse or antifuse element

C438S466000, C438S600000, C438S601000, C257S529000

Reexamination Certificate

active

08030181

ABSTRACT:
A fuse circuit is disclosed, which comprises at least one electrical fuse element having a resistance that changes after being stressed in an electromigration mode, a switching device serially coupled with the electrical fuse element in a predetermined path between a fuse programming power supply (VDDQ) and a low voltage power supply (GND) for selectively allowing a programming current passing through the electrical fuse element during a programming operation, and at least one peripheral circuit coupled to the VDDQ, wherein the peripheral circuit is active and draws current from the VDDQ during a fuse programming operation.

REFERENCES:
patent: 6018488 (2000-01-01), Mishima et al.
patent: 7821041 (2010-10-01), Chung et al.
patent: 2002/0075062 (2002-06-01), Kitade

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