Semiconductor integrated circuit comprising mutli-threshold CMOS (MTCMOS) and non-MTCMOS circuit cells in the same circuit block

摘要

Disclosed herein is a semiconductor integrated circuit including: a cell layout region (A1) including circuit cells (10) subject to power control the supply and interruption of power to which is controlled by a power switch (20), and always-on circuit cell groups (50) which are always powered after the activation; a main line (PL1) laid out in the cell layout region (A1) and applied with a source (VDD) or reference (VSS) voltage; and first and second branch lines (BL2) which branch from the main line (PL1) in the cell layout region (A1).