Product term based programmable logic array devices with reduced control memory requirements
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United States of America Patent
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Nov 25, 1997
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N/A
app pub date -
Jan 16, 1996
filing date -
Jan 16, 1996
priority date (Note) -
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Abstract
The number of programmable control elements required in a programmable AND array for use in a product term based programmable logic array device is reduced by generally feeding only the true or complement of each input logic signal into the AND array on an associated main word line conductor. Auxiliary word line conductors are provided for those input logic signals that are required in both true and complement form. The number of auxiliary word line conductors is less than the number of main word line conductors, which can reduce the required number of programmable control elements as compared to a conventional programmable AND array in which both the true and complement of all input logic signals are fed into the array.
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