High-performance ISO/IEC 14443 A/B frontend

  • Not recommended for new designs. For new designs, please use recommended product MFRC631 plus from the CLRC663 plus family.

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Product Details


  • Includes NXP® ISO/IEC14443-A, Innovatron ISO/IEC14443-B and NXP MIFARE®
    Crypto 1 intellectual property licensing rights
  • High-performance multiprotocol NFC frontend for transfer speed up to 848 kbit/s
  • Supports ISO/IEC 14443 A/MIFARE, ISO/IEC 14443 B
  • Supports MIFARE Classic® encryption by hardware in read/write mode
  • Allows to read MIFARE Ultralight®, MIFARE Classic with 1K memory, MIFARE Classic with 4K memory, MIFARE® DESFire® EV1, MIFARE DESFire EV2 and MIFARE Plus® cards
  • Low-power card detection
  • Compliance to “EMV contactless protocol specification V2.3.1” on RF level can be achieved
  • Antenna connection with minimum number of external components
  • Supported host interfaces:
    • SPI up to 10 Mbit/s
    • I2C-bus interfaces up to 400 kBd in Fast mode, up to 1000 kBd in Fast mode plus
    • RS-232 Serial UART up to 1228.8 kBd, with voltage levels dependent on pin voltage supply
  • Separate I2C-bus interface for connection of a secure access module (SAM)
  • buffer with size of 512 bytes for highest transaction performance
  • Flexible and efficient power-saving modes including hard power down, standby, and low-power card detection
  • Cost saving by integrated PLL to derive system clock from 27.12 MHz RF quartz crystal
  • 3 V to 5.5 V power supply
  • Up to 8 free programmable input/output pins
  • Typical operating distance in read/write mode for communication to a ISO/IEC 14443A/MIFARE Card up to 12 cm, depending on the antenna size and tuning


Quick reference to our documentation types.

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Quick reference to our board types.

1 hardware offering


Quick reference to our software types.

4 software files

Note: For better experience, software downloads are recommended on desktop.


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