<p>A power shutdown area is correctly provided. A cell region whereupon a plurality of core cells are arranged, and a power supply switch arranged corresponding to each cell region is provided. A plurality of power shutdown areas are formed by a unit of the core cell, and power shutdown is performed for each power shutdown area by the power supply switch corresponding to each power shutdown area. Thus, the power shutdown area can be finely set by the unit of the core cell, and the power shutdown area is correctly provided. The current consumption during the standby time can be reduced by the correction of the power shutdown are a.</p>
