本帖最后由 liuzonggong 于 2024-10-28 12:55 编辑
The MFRC522is a highly integrated reader/writer for contactless communication at 13.56 MHz. TheMFRC522 reader supports ISO 14443A / MIFARE® mode. The MFRC522’sinternal transmitter part is able to drive a reader/writer antenna designed tocommunicate with ISO/IEC 14443A/MIFARE® cards and transponders without additional active circuitry. The receiver part provides a robust and efficient implementation of a demodulation anddecoding circuitry for signals from ISO/IEC 14443A/MIFARE® compatible cards and transponders. The digital part handles the complete ISO/IEC 14443Aframing and error detection (Parity & CRC).The MFRC522 supports MIFARE®Classic (e.g. MIFARE® Standard) products. The MFRC522 supports contactless communication using MIFARE® higher transfer speedsup to 848 kbit/s in both directions. 从介绍看能做转发器transponders.是转发器的意思。高速公路的卡就是cpu卡,里面有单片机和电池。
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