Patent ID: 7978787

Claim:
A semiconductor device comprising: a data demodulation circuit in which a wireless signal is demodulated; a level shift circuit in which an outputted signal of the data demodulation circuit is inputted; and a clock generation circuit in which an output of the level shift circuit is inputted; a control circuit in which the output of the level shift circuit is inputted, wherein the level shift circuit is supplied with a first DC power supply voltage and a second DC power supply voltage, a voltage amplitude of the second DC power supply voltage is lower than that of the first DC power supply voltage, wherein the control circuit is supplied with the second DC power supply voltage, and wherein the level shift circuit outputs a signal having the same voltage amplitude as that of the second DC power supply voltage, which is converted from an inputted signal having the same voltage amplitude as that of the first DC power supply voltage, and wherein the clock generating circuit outputs a clock signal to the control circuit.