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US 8,151,238 B2Granted
Semiconductor integrated circuit and design method thereof
AssigneePanasonic Corporation
InventorsKouji Fujiyama, Takahiro Nagatani, Atsushi Takahashi
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Abstract
In a layout process of a semiconductor integrated circuit, a power supply is initially formed in an arrangement in which the current threshold value is not exceeded. In a case where the excess over the current threshold value occurs after the power supply is formed, the power supply arrangement is changed according to the current threshold value, design rule data base, and power supply wiring density so as not to exceed the current threshold value.
Claims20
A semiconductor integrated circuit comprising:
- a first power supply source IO terminal;
- a first power supply source wire;
- and
- a first ring power supply, wherein:
- the first power supply source IO terminal is connected to the first power supply source wire,
- the first power supply source wire is connected to the first ring power supply,
- the first power supply source wire includes a first branched wire, and
- the first branched wire is connected to the first ring power supply.
5 more elements
Dependencies are inferred from the claim text.