Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1994-05-04
1996-07-23
Westin, Edward P.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326113, H01L 2500, H03K 19177
Patent
active
055393314
ABSTRACT:
A field programmable gate array comprises: a first wire group (8) composed of a plurality of first wires; a second wire group (7) composed of a plurality of second wires; switching sections (9) provided at least one intersection between the first and second wires of the first and second wire groups (8, 7), for determining connection and disconnection between both when programmed; and a basis cell (6B) having a first transmission gate (4) turned on in response to a high gate voltage and a second transmission gate (5) turned on in response to a low gate voltage, gates of the first and second transmission gates (4, 5) being connected to each other as a common gate or being connectable to each other as a common gate by the switching sections when programmed, input and output terminals and the common gates of the first and second transmission gates (4, 5) being connected to any of the first wires of the first wire group (8), respectively. Wiring of different lengths is provided for connecting circuit elements within the field programmable gate array, with wires of a first length being more numerous than wires of a second, longer length. The quantity of wires of different lengths varies in accordance with the -2.5 power of the length of the wires.
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Hatori Fumitoshi
Ichida Makoto
Nogami Kazutaka
Sakurai Takayasu
Calogero Stephen
Kabushiki Kaisha Toshiba
Westin Edward P.
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