Patent ID: 8035411

Claim:
A semiconductor integrated circuit, comprising: a first power supply line configured to supply a given voltage; a second power supply line disposed separately from the first power supply line; a switch connected between the first power supply line and the second power supply line to control whether or not to supply the given voltage from the first power supply line to the second power supply line according to a inputted control signal; a first logic circuit connected to the second power supply line to operate based on a voltage generated in the second power supply line; a control signal line connected to the switch to supply the control signal to the switch; and a terminal connected to the control signal line to output the control signal that propagates through the control signal line to an outside, wherein the terminal is connected to a first scan chain, and wherein the first scan chain comprises a flip-flop connected to one end of the control signal line; and an OR circuit connected to another end of the control signal line.