Serial Peripheral Interface Communication Between MCU EM78P447A and RF Reader IC MF RC530

摘要

A significant method in the way the MCU EM78P447A manipulates the RF reader IC MF RC530 ' s functions used in RF IC card application is presented. In this paper, RF reader IC MF RC530's SPI compatible interface is introduced. The kernel technologies including SPI connection, software design, register initiation, request-response between the reader 1C and the MCU, authentication and the proper format of the key are explained. Adopting the serial peripheral interface is the innovation in the paper. TheSPI communication mode proves feasible and precise. Furthermore, in the way we avoid the abuse of parallel interface.