Patent ID: 8073643
Filing Date: 2011-12-06
Classification: G06F,Y02D

Abstract:
1. A semiconductor device comprising: a first power supply line coupled to at least one component and not connected to a first circuit; second power supply line coupled to the first circuit and to a voltage determining circuit: a first power supply terminal for receiving a second supply voltage at the first power supply line; and a second power supply terminal for receiving a second supply voltage at the second power supply line, wherein the first circuit receives power supplied via the second power supply line, wherein the voltage determining circuit determines a voltage level of the second power supply line, wherein the voltage determining circuit enables operation of the first circuit when the voltage level of the second power supply line reaches a predetermined voltage, wherein power supplied to the first power supply line is not interrupted, wherein power supplied to the second power supply line is interrupted and resumed, wherein the first circuit enters an operation stop state when outputting of the second supply voltage to the second power supply line is interrupted, and wherein, when outputting of the second supply voltage to the second power supply line is resumed, the first circuit in the operation stop state shifts to an operation state on the basis of a determination result of the voltage determining circuit.