| 摘要 |
An SOI structure semiconductor integrated circuit is disclosed that reduces the number of power supply wires setting substrate potential of a semiconductor element and reduces power consumption. With an SOI structure semiconductor integrated circuit, a first circuit block 51 does not include a critical path and a second circuit block 61 does include a critical path. First power supply wiring 28 supplies a first power supply and second power supply wiring 29 supplies a second power supply of a high-voltage compared to the first power supply. A wiring section 71 (P-channel first substrate power supply wiring and P-channel first power supply wiring) supplies the first power supply as a substrate power supply for P-channel elements of the first circuit block 51 and a source power supply. A wiring section 91 (P-channel second substrate power supply wiring) supplies the first power supply as a substrate power supply for P-channel elements of a second circuit block 61 , and a wiring section 81 (P-channel second power supply wiring) supplies the second power supply as a source power supply for P-channel elements of the second circuit block 61. |
