Securing an integrated circuit

Details Securing an integrated circuit Securing an integrated circuit

2008-01-22

2008-01-22

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Having fuse element

C365S185040, C365S201000

Reexamination Certificate

active

07321522

ABSTRACT:
Securing an integrated circuit, including fabricating the integrated circuit so that the integrated circuit includes at least one efuse that is intended to be always blown during operation of the integrated circuit and the integrated circuit includes security circuitry capable of blowing the efuse and of performing other security related functions; blowing, by the security circuitry of the integrated circuit, the efuse when power is applied to the integrated circuit and prior to performing any other security related functions; and setting, by the security circuitry after blowing the efuse, a security state of the integrated circuit in dependence upon a sensed state of the efuse.

REFERENCES:
patent: 6639848 (2003-10-01), Maejima
patent: 7129769 (2006-10-01), Dixon et al.
patent: 7224633 (2007-05-01), Hovis et al.
patent: 7236418 (2007-06-01), Uvieghara

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