Identification of integrated circuit

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

Reexamination Certificate

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Reexamination Certificate

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07960985

ABSTRACT:
An apparatus in an example comprises an integrated circuit and one or more resistors. The integrated circuit comprises an internal current source and an external interface pin. The one or more resistors arc external to the integrated circuit and coupled with the external interface pin of the integrated circuit. Application of current from the internal current source of the integrated circuit to the one or more resistors through the external interface pin serves to generate a voltage that is employed to identify the integrated circuit.

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patent: 6894501 (2005-05-01), Flasck et al.
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patent: 2003/0151942 (2003-08-01), Bardouillet et al.
patent: 2005/0025495 (2005-02-01), Devine, III et al.
patent: 2005/0237841 (2005-10-01), Wu et al.
patent: 2005/0247997 (2005-11-01), Chung et al.
patent: 2006/0063286 (2006-03-01), Bidermann et al.
patent: 2006/0179047 (2006-08-01), Bresemann et al.

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