Semiconductor device and applied system device thereof

Static information storage and retrieval – Read/write circuit – Differential sensing

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365 94, 36518907, G11C 702

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active

059869577

ABSTRACT:
A semiconductor device includes an identification data storing circuit having ROM cells, a dummy data storing circuit having destructive type ROM cells, and a comparing circuit. The identification data storing circuit stores identification data inherent to a semiconductor chip. The dummy data storing circuit stores dummy data which is exclusive with respect to the identification data. The comparing circuit compares and checks data items read out from the above two data storing circuits and outputting the result of comparison.

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