DATA PROCESSING DEVICE, IC CARD AND COMMUNICATION SYSTEM

摘要

An object is to provide a data processing device which achieves multiple functions or easy additional providing of a function while suppressing adverse influence on a communication distance or to improve resistance to electrostatic discharge in the data processing device. The data processing device includes an antenna which transmits and receives a first signal to/from a first terminal device through wireless communication, an integrated circuit which executes a process in accordance with the first signal, and a terminal portion which transmits and receives a second signal to/from a second terminal device and has an exposed conductive portion on its surface. A protection circuit is provided between at least one terminal of terminals of the terminal portion and a power supply terminal of a high potential and between the one terminal and a power supply terminal of a low potential.