Changing chip function based on fuse states

Electronic digital logic circuitry – Security

Reexamination Certificate

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C326S037000

Reexamination Certificate

active

11016220

ABSTRACT:
Techniques and systems whereby operation of and/or access to particular features of an electronic device may be controlled after the device has left the control of the manufacturer are provided. The operation and/or access may be provided based on values stored in non-volatile storage elements, such as electrically programmable fuses (eFUSES).

REFERENCES:
patent: 5898776 (1999-04-01), Apland et al.
patent: 5930826 (1999-07-01), Lee et al.
patent: 6753590 (2004-06-01), Fifield et al.
patent: 6814297 (2004-11-01), Mueller
IEEE Electron Device Letters, vol. 23, No. 9, Sep. 2002, “Electrically Programmable Fuse (eFUSE) Using Electromigration in Silicides”, by C. Kothandaraman and S. Iyer.

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