Design of 13.56MHz RF card reader based on MF RC500

In order to improve security and speediness of access control system, a RF reader design solution of frequency 13.56MHz based on microcontroller chip P89C58X2RN and radio frequency chip MF RC500 is proposed in this paper. The operating characteristics of frequency chip RC500 and RF card MIFARE1 are analyzed, and the hardware circuit of IC reader, RF antenna and the software design are developed. The system has been successfully applied to the access control system of a company, and the RF reader attains preferable application results.