Wireless chip for chip-to-chip wireless transfer

A wireless chip for chip-to-chip wireless transfer, comprising:

• an antenna used as a wireless transfer path of data or power;
• a circuit unit providing information about whether there is input/output data and information about a request for transmitting/receiving power;
• a mode control unit having a first terminal connected with the circuit unit, outputting a first signal having a first level or a second signal having a second level through a second terminal in accordance with whether there is input/output data, and outputting the first signal or the second signal through a third terminal in accordance with a request for transmitting or receiving power;
• a data communication unit activated and inputting/outputting the data between the circuit unit and the antenna, only when the first signal is inputted through the second terminal;
• a power reception unit activated and supplying power, which the antenna has wirelessly received, to the circuit unit, between the circuit unit and the antenna, the power reception unit being activated in response to detection of the second signal of the second terminal of the mode control unit and the first signal of the third terminal of the mode control unit;
• and
• a power transmission unit activated and relaying power, which is supplied from the circuit unit, to the antenna, between the circuit unit and the antenna, the power transmission unit being activated in response to detection of the second signal of the second terminal of the mode control unit and the second signal of the third terminal of the mode control unit.