Programmable logic device

Details Programmable logic device Programmable logic device

1987-07-06

1988-09-20

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

364716, 365231, G06F 1120, G06F 1122, G11C 2900

Patent

active

047728116

ABSTRACT:
A programmable logic device of a single semiconductor chip includes a plurality of programmable AND-OR logic blocks, each block including an AND gate array and an OR gate array and at least a pair of input and output lines; a plurality of input/output buffer blocks, each block including at least one input and output lines; and a plurality of interconnection lines across which the input and output lines extend. A programmable switch is provided at each of the intersections between the input and output lines and the interconnection lines, so that each of the input and output lines are selectively connected to a desired one of the interconnection lines. Preferably, each of the interconnection lines further includes at least one programmable switch so that each of the interconnection lines may be divided into a desired number of segments which are electrically isolated from one another. A programmable logic device may include a plurality of programmable logic unit cells and first interconnecting means for interconnecting the cells, each of the cells including a plurality of programmable AND-OR logic blocks, a plurality of input/output blocks and second interconnecting means for interconnecting the blocks.

REFERENCES:
patent: 4506341 (1985-03-01), Kalter et al.
patent: 4511812 (1985-04-01), Satake
patent: 4617649 (1986-10-01), Kyomasu et al.
patent: 4689654 (1987-08-01), Brockmann
patent: 4721868 (1988-01-01), Cornell et al.
patent: 4727268 (1988-02-01), Hori

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