Electronic digital logic circuitry – Significant integrated structure – layout – or layout...
Patent
1995-12-06
1997-05-20
Hudspeth, David R.
Electronic digital logic circuitry
Significant integrated structure, layout, or layout...
326 47, 257206, 257335, H03K 17093
Patent
active
056315813
ABSTRACT:
A microelectronic integrated circuit includes a semiconductor substrate, and a plurality of microelectronic devices formed on the substrate. Each device has a periphery defined by a triangle, and includes an active area formed within the periphery. First and second terminals are formed in the active area adjacent to two vertices of the triangle respectively, and first to third gates are formed between the first and second terminals. The gates have contacts formed outside the active area adjacent to a side of the triangle between the two vertices. The power supply connections to the first and second terminals, the conductivity type (NMOS or PMOS), and the addition of a pull-up or a pull-down resistor are selected for each device to provide a desired AND, NAND, OR or NOR function. A third terminal can be formed between two of the gates and used as an output terminal to provide an AND/OR logic function. The devices are interconnected using three direction routing based on hexagonal geometry.
REFERENCES:
patent: 4148047 (1979-04-01), Hendrickson
patent: 4777521 (1988-10-01), Coe
patent: 5394030 (1995-02-01), Jennings, III et al.
Aleshin Stanislav V.
Andreev Alexander E.
Jones Edwin R.
Kapoor Ashok K.
Koford James S.
Hudspeth David R.
LSI Logic Corporation
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