Low current redundancy anti-fuse method and apparatus

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

1996-10-03

2000-02-08

Zarabian, A.

Static information storage and retrieval

Read/write circuit

Bad bit

3652257, G11C 700

Patent

active

060234318

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: 5200922 (1993-04-01), Rao
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.
patent: 5566107 (1996-10-01), Gilliam
patent: 5657293 (1997-08-01), Merritt

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