用AVR单片机ATMega32通过U2270B读取H4001只读RFID卡号的范例，H4001卡有关信息，采用曼切斯特编码，125Khz,RF/64,位周期512uS，激光编程64位ID。-with AVR ATMega32 through U2270B RFID read CD-H4001 Create a model, the H4001 card information using Manchester encoding, 125Khz, RF/64. 512 uS-cycle laser programming 64 ID.