基于USB接口射频卡读卡器的设计与实现

摘要

本文介绍了基于USB接口的射频卡读卡器的设计与实现.该读卡器利用恩智浦半导体(NXP)公司的MFRC531芯片作为射频芯片,以STC89C52单片机作为主控芯片,并利用CH372芯片扩展了USB接口,实现了利用USB协议中标准HID类接口设计出一款低成本通用射频卡读卡器的目的.%This paper introduces the design and implemention of USB-base Radio-Frequency card reader. The reader uses MFRC531 of NXP Semiconductors (NXP) as RF chip, uses STC89C52 MCU as the master chip, and uses CH372 to expand a high-speed USB interface. Finally, the reader employs USB HID class to design a Low-cost Radio Frequency Card reader.