Memory unit having programmable device ID

Static information storage and retrieval – Read/write circuit

Reexamination Certificate

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C365S185330, C365S189070

Reexamination Certificate

active

06944064

ABSTRACT:
An integrated circuit memory device has a memory array and a non-volatile register for storing a stored signal. A bus is connected to the device for supplying an externally supplied signal to the device. A comparator compares the stored signal and the externally supplied signal and provides access to the memory array in response to the comparison.

REFERENCES:
patent: 5619453 (1997-04-01), Roohparvar et al.
patent: 5991841 (1999-11-01), Gafken et al.
patent: 6085282 (2000-07-01), Hansen et al.
patent: 6330635 (2001-12-01), Stafford
patent: 6366521 (2002-04-01), Roohparvar
patent: 6421765 (2002-07-01), Poisner
patent: 6820179 (2004-11-01), Kobayashi et al.

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