Gate-array chip
First Claim
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1. A gate-array chip comprising:
- a semiconductor bulk;
a plurality of groups of basic-cell arrays arranged in parallel on said semiconductor bulk of said gate-array chip, each of said groups of basic-cell arrays including a plurality of basic-cells;
a plurality of impurity regions provided for each of said groups of basic-cell arrays, formed on said semiconductor bulk and in regions between each of said groups of basic-cell arrays, first predetermined ones of said impurity regions and first predetermined ones of said groups of basic-cell arrays located on either side of said predetermined ones of said impurity regions connected to form input/output circuits;
a first cutting region, formed between second predetermined ones of said basic-cell arrays, for enabling said plurality of groups of basic-cell arrays on said gate-array chip to be cut into smaller plurality of groups of basic cell arrays to form chips smaller than said gate-array chip; and
first input/output pad forming regions formed adjacent to said first cutting region.
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Abstract
A gate-array chip includes a plurality of basic-cell arrays arranged in parallel on a semiconductor bulk and a plurality of impurity regions formed on the semiconductor bulk and in regions between the basic-cell arrays. The impurity regions and part of the basic-cell arrays are adapted to form input/output circuits whereby the gate-array chip is divided into several chips each having a desired size and a desired number of gates.
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Citations
10 Claims
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1. A gate-array chip comprising:
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a semiconductor bulk; a plurality of groups of basic-cell arrays arranged in parallel on said semiconductor bulk of said gate-array chip, each of said groups of basic-cell arrays including a plurality of basic-cells; a plurality of impurity regions provided for each of said groups of basic-cell arrays, formed on said semiconductor bulk and in regions between each of said groups of basic-cell arrays, first predetermined ones of said impurity regions and first predetermined ones of said groups of basic-cell arrays located on either side of said predetermined ones of said impurity regions connected to form input/output circuits; a first cutting region, formed between second predetermined ones of said basic-cell arrays, for enabling said plurality of groups of basic-cell arrays on said gate-array chip to be cut into smaller plurality of groups of basic cell arrays to form chips smaller than said gate-array chip; and first input/output pad forming regions formed adjacent to said first cutting region. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A gate array chip formed on a semiconductor bulk, comprising:
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groups of basic-cell arrays, arranged in parallel on the semiconductor bulk, each of said groups of basic-cell arrays including basic-cells; a first cutting region, formed on the semiconductor bulk and adjacent each of said groups of basic cell arrays, for cutting said groups of basic-cell arrays on said gate array chip in a first direction into a plurality of groups of basic-cell arrays which are smaller than said groups of basic-cell arrays, to form chips smaller than said gate array chips ; wiring regions, formed on the semiconductor bulk and provided between adjacent ones of said groups of basic-cell arrays, at least a first one of said wiring regions formed adjacent said first cutting region for forming input/output pads, and at least a second of one of said wiring regions formed adjacent said first one of said wiring regions and formed between at least two of said groups of basic-cell arrays, said second one of said wiring regions and said at least two of said groups of basic-cell arrays being connected to form input/output circuits; a second cutting region formed on the semiconductor bulk and extending in a second direction orthogonal to said first cutting region for cutting said plurality of groups of basic-cell arrays in the second direction into smaller groups of basic-cell arrays to form chips smaller than said gate array chip; and impurity diffusion regions, formed under said wiring regions and between each of said groups of basic-cell arrays, said impurity diffusion regions and selected ones of said groups of basic-cells connected to form buffer circuits. - View Dependent Claims (9, 10)
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Specification