Patent ID: 7123084

Claim:
A semiconductor integrated circuit formed of a rectangular semiconductor chip having input/output cells arranged only along first and second sides thereof facing to each other, comprising: first and second input/output cell areas formed of input/output cells arranged along the first and second sides, respectively; first and second power supply lines wired along the first side in said first input/output cell area; first and second power supply lines wired along the second side in said second input/output cell area; a power supply line area including first and second power supply lines that are wired along a third side of the semiconductor chip and connect the first and second power supply lines in said first input/output cell area to the first and second power supply lines in said second input/output cell area, respectively, the third side connecting the first and second sides; and a power supply cell disposed in at least one of a corner of the first and third sides and a corner of the second and third sides, wherein said power supply cell comprises: a pad for supply of one of first and second power supply voltages; a first connecting line connecting the first power supply line in one of said first and second input/output cell areas to the first power supply line in said power supply line area; a second connecting line connecting the second power supply line in one of said first and second input/output cell areas to the second power supply line in said power supply line area; and a leadout line connecting one of the first and second connecting lines to the pad.