Patent ID: 7786793
Filing Date: 2010-08-31
Classification: G06F,H01L,H03K

Abstract:
1. A semiconductor integrated circuit comprising: a stoppable circuit unit configured to be alternately switched between a stopped state and an operating state; a first voltage line configured to apply a first voltage to the stoppable circuit unit when the stoppable circuit unit is in the operating state; a second voltage line configured to apply the first voltage to the stoppable circuit unit when the stoppable circuit unit is in a transient state of switching from the stopped state to the operating state; and a third voltage line configured to apply a second voltage to the stoppable circuit unit; wherein the stoppable circuit unit includes a circuit cell connected between the third voltage line and an internal voltage line, a first switch that isolates the second voltage line from the internal voltage line when the stoppable circuit unit is in the stopped state, and connects the second voltage line to the internal voltage line when the stoppable circuit unit is in the transient state, and a second switch that isolates the first voltage line from the internal voltage line when the stoppable circuit unit is in the stopped state and when the stoppable circuit unit is in the transient state, and connects the first voltage line to the internal voltage line when the stoppable circuit unit is in the operating state, wherein: wherein: