Patent ID: 7703062
Filing Date: 2010-04-20
Classification: G06F,H01L,H03K

Abstract:
1. A semiconductor integrated circuit comprising: a first boundary cell having a first power source wiring, a second power source wiring and a first pseudo power source wiring; a first circuit cell having a third power source wiring connected with the first power source wiring, a second pseudo power source wiring connected with the first pseudo power source wiring, and a first circuit formed of a first circuit transistor; and a first switching transistor having a first electrode connected with the second power source wiring, a second electrode connected with the first pseudo power source wiring, and a gate electrode, wherein the first switching transistor is operated to be turned “ON” and “OFF” according to a control signal inputted to the gate electrode of the first switching transistor and an absolute value of a threshold voltage of the first switching transistor is larger than an absolute value of a threshold voltage of the first circuit transistor.