Patent ID: 7791369
Filing Date: 2010-09-07
Classification: H03K

Abstract:
1. A semiconductor integrated circuit on a semiconductor substrate, the semiconductor integrated circuit comprising: a first circuit block having first circuit block internal circuits electrically connected to a source voltage line and a virtual reference voltage supply line, said virtual reference voltage supply line being electrically connectable to a reference voltage supply line; a second circuit block having second circuit block internal circuits electrically connected to another source voltage line and another reference voltage supply line, wherein said source voltage line is connectable to said another source voltage line, said reference voltage supply line being connectable to said another reference voltage supply line, wherein a power line switch section connects said source voltage line to said another source voltage line, said reference voltage supply line being connected to said another reference voltage supply line, wherein said power line switch section includes a plurality of transistors connected in parallel between said reference voltage supply line and said another reference voltage supply line.