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MFRC52201HN1/TRAYB Datasheet(PDF) 7 Page - NXP Semiconductors |
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MFRC52201HN1/TRAYB Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 96 page  MFRC522_33 © NXP B.V. 2009. All rights reserved. Product data sheet PUBLIC Rev. 3 — 26 October 2009 112133 7 of 96 NXP Semiconductors MFRC522 Contactless reader IC 8. Functional description The MFRC522 transmission module supports the Read/Write mode for ISO/IEC 14443 A/MIFARE using various transfer speeds and modulation protocols. The physical level communication is shown in Figure 5. The physical parameters are described in Table 4. The MFRC522’s contactless UART and dedicated external host must manage the complete ISO/IEC 14443 A/MIFARE protocol. Figure 6 shows the data coding and framing according to ISO/IEC 14443 A/MIFARE. Fig 4. MFRC522 Read/Write mode (1) Reader to card 100 % ASK, Miller encoded, transfer speed 106 kBd to 848 kBd. (2) Card to reader subcarrier load modulation, Manchester encoded or BPSK, transfer speed 106 kBd to 848 kBd. Fig 5. ISO/IEC 14443 A/MIFARE Read/Write mode communication diagram 001aak583 BATTERY reader/writer contactless card MICROCONTROLLER MFRC522 ISO/IEC 14443 A CARD (1) (2) 001aak584 MFRC522 ISO/IEC 14443 A CARD ISO/IEC 14443 A READER Table 4. Communication overview for ISO/IEC 14443 A/MIFARE reader/writer Communication direction Signal type Transfer speed 106 kBd 212 kBd 424 kBd 848 kBd Reader to card (send data from the MFRC522 to a card) reader side modulation 100 % ASK 100 % ASK 100 % ASK 100 % ASK bit encoding modified Miller encoding modified Miller encoding modified Miller encoding modified Miller encoding bit length 128 (13.56 µs) 64 (13.56 µs) 32 (13.56 µs) 16 (13.56 µs) Card to reader (MFRC522 receives data from a card) card side modulation subcarrier load modulation subcarrier load modulation subcarrier load modulation subcarrier load modulation subcarrier frequency 13.56 MHz/16 13.56 MHz/16 13.56 MHz/16 13.56 MHz/16 bit encoding Manchester encoding BPSK BPSK BPSK |
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