Low currency redundancy anti-fuse method and apparatus

Details Low currency redundancy anti-fuse method and apparatus Low currency redundancy anti-fuse method and apparatus

1997-07-18

1998-12-08

Fears, Terrell W.

Static information storage and retrieval

Read only systems

Fusible

365 94, G11C 1300

Patent

active

058479872

ABSTRACT:
A programmable circuit includes a first node and provides a programmed signal based on the state of the first node. A first anti-fuse has a programmed state and an unprogrammed state and couples the first node to a first power supply when in the programmed state and decouples the first node from the first power supply when in the unprogrammed state. A second anti-fuse has a programmed state and an unprogrammed state and couples the first node to a second power supply when in the programmed state and decouples the first node from the second power supply when in the unprogrammed state. The state of the programmed signal can be used to replace a primary circuit element of an integrated circuit with a redundant circuit element.

REFERENCES:
patent: 5243226 (1993-09-01), Chan
patent: 5264725 (1993-11-01), Mullarkey et al.
patent: 5315177 (1994-05-01), Zagar et al.
patent: 5424672 (1995-06-01), Cowles et al.
patent: 5508638 (1996-04-01), Cowles et al.

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