Look-up table based logic element with complete permutability of the inputs to the secondary signals

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United States of America Patent

PATENT NO 5821773
SERIAL NO

08524698

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Abstract

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A logic element for a programmable logic device. The logic element includes a look-up table (400) for implementing logical functions, a programmable delay block (415), a storage block (430) configurable as a latch or a flip-flop, and a diagnostic shadow latch (435). A plurality of inputs (410) to the logic element and complements of these inputs are available to control the secondary functions of the storage block (430).

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Patent Owner(s)

Patent OwnerAddress
CADENCE DESIGN SYSTEMS INC2655 SEELY AVENUE SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Butts, Michael R Beaverton, OR 40 2617
Norman, Kevin A Belmont, CA 31 1334
Patel, Rakesh H Cupertino, CA 101 3048
Sample, Stephen P Saratoga, CA 39 2816

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