Programmable logic device having expanded logic capability

Details Programmable logic device having expanded logic capability Programmable logic device having expanded logic capability

1991-03-19

1991-10-01

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307468, 307480, H03K 19177

Patent

active

050536460

ABSTRACT:
A programmable logic device includes: a programmable AND array; an OR array operatively connected to the AND array; a plurality of external terminals; and a plurality of cell blocks operatively connected to the AND array and OR array and provided for each of the plurality of external terminals, each receiving two output signals from the OR array and outputting a signal to a corresponding external terminal based on the two output signals. By controlling an input/output of an input signal and an internally produced signal and a feedback thereof to the AND array, it is possible to realize various logic constitutions and develop a degree of freedom of the logic design in the entire device.

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Wescon 87, vol. 31, 1987, pp. 1-11, Agrawal,AMD/MMI's Spectrum of Application Specific PLDs.
Electron Design, vol. 35, No.8, Apr., 1987, pp. 13-25, Bursky, Faster, More Complex PLDs Arrive With Better Programming Tools.
ALTERA Corp., ALTERA EPLD Handbook 1985, pp. 20-28.

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