Partial good integrated circuit and method of testing same

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing

Reexamination Certificate

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Reexamination Certificate

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10651874

ABSTRACT:
An integrated circuit, including: a multiplicity of macro-circuits, each macro-circuit having the same function; a fuse bank containing a multiplicity of fuses, the state of the fuses storing test data indicating at least which macro-circuits failed a test; and means for preventing utilization of failing macro-circuits during operation of the integrated circuit and a method generating a partial good integrated circuit, the method including: providing an integrated circuit have a multiplicity of macro-circuits arranged in one or more groups, each macro-circuit having the same function and a fuse bank containing fuses; testing each macro-circuit prior to a fuse programming operation; programming the fuses in the fuse bank in order to store data indicating at least which macro-circuits failed the testing step; and preventing utilization of each failing macro-circuit during operation of the integrated based on the data stored in the fuse bank.

REFERENCES:
patent: 5610867 (1997-03-01), DeBrosse et al.
patent: 6363020 (2002-03-01), Shubat et al.
patent: 6505324 (2003-01-01), Cowan et al.
patent: 6757204 (2004-06-01), Di Ronza et al.
patent: 6829181 (2004-12-01), Seitoh

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