Method of designing semiconductor integrated circuit device and semiconductor integrated circuit device
First Claim
1. A semiconductor integrated circuit device comprising:
- memory mats arranged in a first direction, each of said memory mats including memory cells arranged in said first direction and a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
first power supply lines electrically connected to said memory cells and extending on said memory mats in said first direction; and
second power supply lines and third power supply lines extending over said first power supply lines in said second direction and arranged between adjacent ones of said memory mats, in said first direction, said second power supply lines being electrically connected to said first power supply lines, and said third power supply lines being electrically connected to said well region.
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Accused Products
Abstract
In a semiconductor integrated circuit device and a method of designing the same, design information about circuit cells each having a desired function are described as objects according to selected purposes. The pieces of design information are registered in a cell library as cell information capable of forming any of substrate potential fixed cells and substrate potential variable cells. Further, a data sheet common to the substrate potential fixed cell and the substrate potential variable cell is offered to a user, so that the user is able to make a selection according to the user'"'"'s purposes. The substrate potential fixed cells and the substrate potential variable cells are mixed together on a semiconductor chip so as to be properly used according to the functions or the like of circuit portions in which the cells are used.
7 Citations
26 Claims
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1. A semiconductor integrated circuit device comprising:
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memory mats arranged in a first direction, each of said memory mats including memory cells arranged in said first direction and a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
first power supply lines electrically connected to said memory cells and extending on said memory mats in said first direction; and
second power supply lines and third power supply lines extending over said first power supply lines in said second direction and arranged between adjacent ones of said memory mats, in said first direction, said second power supply lines being electrically connected to said first power supply lines, and said third power supply lines being electrically connected to said well region. - View Dependent Claims (2, 3, 4, 20, 21, 22, 23, 24, 25, 26)
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5. A semiconductor integrated circuit device comprising:
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memory mats arranged in a first direction, each of said memory mats including memory cells arranged in said first direction and a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
power supply lines extending in said second direction and arranged between adjacent ones of said memory mats in said first direction, said power supply lines being electrically connected to said well region; and
switch circuits placed at both of opposing ends of said memory mats, in said second direction, and are, respectively, electrically connected to corresponding ones of said power supply lines through a transistor for supplying one of a first voltage and a second voltage, lower than said first voltage. - View Dependent Claims (6, 7, 8)
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9. A semiconductor integrated circuit device comprising:
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memory mats arranged in a first direction, each of said memory mats including memory cells arranged in said first direction and a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
first power supply lines electrically connected to said memory cells; and
second power supply lines and third power supply lines formed over said first power supply lines, extending in said second direction, and arranged between said adjacent memory mats in said first direction, said second power supply lines being electrically connected to said first power supply lines, and said third power supply lines being electrically connected to said well region. - View Dependent Claims (10, 11, 12, 14, 15, 16, 18, 19)
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13. A semiconductor integrated circuit device comprising:
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a first memory array and a second memory array arranged in a first direction, each of the memory arrays including memory cells arranged in said first direction and in a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
a first power supply line electrically connected to said memory cells; and
a second power supply line and a third power supply line formed over said first power supply line, extending in said second direction, and arranged between said first memory array and said second memory array in said first direction, said second power supply line being electrically connected to said first power supply line, and said third power supply line being electrically connected to said well region.
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17. A semiconductor integrated circuit device comprising:
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memory mats arranged in a first direction, each of said memory mats including memory cells arranged in said first direction and a second direction, perpendicular to said first direction, said memory cells being formed in a well region, formed in a substrate, respectively;
first power supply lines electrically connected to said memory cells and extending on said memory mats in said first direction; and
second power supply lines and third power supply lines extending over said first power supply lines in said second direction and arranged between adjacent ones of said memory mats in said first direction, said second power supply lines being electrically connected to said first power supply lines, said third power supply lines being electrically connected to said well region, and said second power supply lines being electrically connected to said third power supply lines at outside said memory mats.
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Specification