An object of the present invention is to supply a semiconductor device capable of communicating data through radio communication, such as an RFID tag or a label-like object, with high productivity at low cost. In the invention, a memory portion, a signal control circuit portion and a communication circuit...http://www.google.com/patents/US20050134463?utm_source=gb-gplus-sharePatent US20050134463 - Semiconductor device, RFID tag and label-like object
