System and method for disabling static current paths in fuse log

Details System and method for disabling static current paths in fuse log System and method for disabling static current paths in fuse log

1996-07-18

1997-09-02

Nguyen, Matthew V.

Static information storage and retrieval

Read only systems

Fusible

G11C 1700

Patent

active

056639023

ABSTRACT:
A programmable fuse circuit is provided with a disabling static current path. The fuse logic circuit includes a controllable switch, load device, and at least one fuse, all of which are connected in a series so as to share a static current path. The controllable switch is preferably a transistor and can be selectively controlled to enable or disable the current path of the programmable fuse circuit. Therefore, by providing the ability to disable the static current path of programmable fuse circuit without having to blow the fuse makes the programmable fuse circuit static current testable. Other applications for the programmable fuse circuit include, for instance, providing a serial number to integrated circuits.

REFERENCES:
patent: 4446534 (1984-05-01), Smith
patent: 4621346 (1986-11-01), McAdams
patent: 5140554 (1992-08-01), Schreck et al.
patent: 5212413 (1993-05-01), Phelan et al.

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