Programmable logic integrated circuits with partitioned logic el

Details Programmable logic integrated circuits with partitioned logic el Programmable logic integrated circuits with partitioned logic el

1995-06-30

1998-09-29

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 41, H03K 738

Patent

active

058150030

ABSTRACT:
A programmable logic device (10) has a number of programmable logic elements (LEs) (12) which are grouped together in a plurality of logic array blocks (LABs) (14). An LE incorporates a plurality of partitioned look-up tables (40a, 40b) that may be selectively connected to its inputs and outputs by means of a number of multiplexers (44a-d, 46). Shared LAB-wide input lines (43a, 43b) provide a shared input line into a number of LEs in a LAB. A digital information processing system (500) incorporating the invention is disclosed. A wide-input AND gate (74) combining the outputs of a number of LEs is disclosed.

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Patterson et al.; "Computer Architecture: A Quantitative Approach"; copyright 1990 by Morgan Kaufmann Publishers, Inc.; pp. 204-206.
Altera Flex 8000 Data Sheet, Aug. 1993, ver. 3.

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