Product term based programmable logic array devices with reduced

Details Product term based programmable logic array devices with reduced Product term based programmable logic array devices with reduced

1996-01-16

1997-11-25

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 41, H03K 1994, H03K 738

Patent

active

056916531

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.

REFERENCES:
patent: Re34363 (1993-08-01), Freeman
patent: 3473160 (1969-10-01), Wahlstrom
patent: 3949370 (1976-04-01), Reyling, Jr. et al.
patent: 4124899 (1978-11-01), Birkner et al.
patent: 4609986 (1986-09-01), Hartmann et al.
patent: 4617479 (1986-10-01), Hartmann et al.
patent: 4642487 (1987-02-01), Carter
patent: 4677318 (1987-06-01), Veenstra
patent: 4713792 (1987-12-01), Hartmann et al.
patent: 4717844 (1988-01-01), Shima et al.
patent: 4758745 (1988-07-01), Elgamal et al.
patent: 4774421 (1988-09-01), Hartmann et al.
patent: 4871930 (1989-10-01), Wong et al.
patent: 4899067 (1990-02-01), So et al.
patent: 4912342 (1990-03-01), Wong et al.
patent: 5121006 (1992-06-01), Pedersen
patent: 5220214 (1993-06-01), Pedersen
patent: 5260610 (1993-11-01), Pedersen et al.
patent: 5260611 (1993-11-01), Cliff et al.
patent: 5274581 (1993-12-01), Cliff et al.
patent: 5350954 (1994-09-01), Patel
patent: 5371422 (1994-12-01), Patel et al.
patent: 5530378 (1996-06-01), Kucharewski, Jr. et al.
patent: 5610535 (1997-03-01), Masaki et al.
R. C. Minnick, "A Survey of Microcellular Research," Journal of the Association for Computing Machinery, vol. 14, No. 2, pp. 203-241, Apr. 1967.
S. E. Wahlstrom, "Programmable Logic Arrays--Cheaper by the Millions," Electronics, Dec. 11, 1967, pp. 90-95.
Recent Developments in Switching Theory, A. Mukhopadhyay, ed., Academic Press, New York, 1971, chapters VI and IX, pp. 229-254 and 369-422.
El Gamal et al., "An Architecture for Electrically Configurable Gate Arrays," IEEE Journal of Solid-State Circuits, vol. 24, No. 2, Apr. 1989, pp. 394-398.
El-Ayat et al., "A CMOS Electrically Configurable Gate Array," IEEE Journal of Solid-State Circuits, vol. 24, No. 3, Jun. 1989, pp. 752-762.
"XC5000 Logic Cell Array Family, Technical Data, Advance Information," Xilinx, Inc., Feb. 1995.
H. Fleisher et al., "An Introduction to Array Logic," IBM Journal of Research and Development, Mar. 1975, pp. 98-109.
A. Weinberger, "High-Speed Programmable Logic Array Adders," IBM Journal of Research and Development, vol. 23, No. 2, Mar. 1979, pp. 163-178.

Affiliated with

Also associated with

Rating

Product term based programmable logic array devices with reduced does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Product term based programmable logic array devices with reduced, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Product term based programmable logic array devices with reduced will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2110036