Patent ID: 7375547
Filing Date: 2008-05-20
Classification: H01L

Abstract:
1. An SOI (Silicon On Insulator) structure semiconductor integrated circuit with a plurality of circuit blocks composed of P-channel elements and N-channel elements, comprising: a first circuit block not including a critical path; a second circuit block including a critical path; first power supply wiring providing a first power supply; second power supply wiring supplying a second power supply of a high voltage compared to the first power supply; P-channel first substrate power supply wiring supplying the first power supply from the first power supply wiring as a substrate power supply for P-channel elements of the first circuit block; P-channel first power supply wiring supplying the first power supply from the first power supply wiring as a source power supply for P-channel elements of the first circuit block; P-channel second substrate power supply wiring supplying the first power supply from the first power supply wiring as a substrate power supply for P-channel elements of the second circuit block; and P-channel second power supply wiring supplying the second power supply from the second power supply wiring as a source power supply for P-channel elements of the second circuit block.