M5Stack RFID Unit MFRC522/RFID 2 Unit WS1850S

File:TArduinoM5StackRFIDUnit.png

Summary

I2C RFID reader/writer module supporting MIFARE and ISO/IEC 14443 Type A protocols with configurable antenna gain, collision detection, and low-power operation.

Description

The M5Stack RFID Unit MFRC522/RFID 2 Unit WS1850S is a highly integrated RFID reader IC designed for 13.56MHz contactless communication. It provides configurable antenna gain, multiple modulation schemes, CRC error detection, and full support for MIFARE Classic and ISO/IEC 14443 Type A protocols. The component features advanced signal processing, collision detection, and programmable transmitter/receiver parameters for flexible RFID system integration. Typical applications include access control systems, inventory tracking, contactless payments, and smart object identification.

Diagram:

Properties

• Address – I2C device address (Default: 0x28).
• Antenna – Antenna configuration.
  • Enabled – Enables antenna (Default: True).
  • Gain (dB) – Antenna gain level (Options: 18, 23, 33, 38, 43, 48) (Default: 33dB).
• Card Operations – Card operation elements:
  • Unbrick – Card recovery operation.
  • Change ID – ID modification operation.
  • Sector – Sector operations.
• CRC – CRC configuration.
  • Most Significant Byte First – MSB-first CRC calculation (Default: False).
  • Preset – CRC preset value (Options: 0x6363, 0x0000, 0xA671, 0xFFFF) (Default: 0x6363).
• Interrupt – Interrupt configuration.
  • Enabled – Enables interrupts (Default: True).
  • Inverted – Interrupt polarity inversion (Default: False).
  • Open Drain – Open-drain interrupt output (Default: False).
• Name – Component identifier (Default: RFID).
• Parity Check – Parity checking (Default: True).
• Power Down – Power-down mode (Default: False).
• Receiver – Receiver configuration.
  • Auto Deactivate – Automatic deactivation (Default: True).
  • Conductance Values – Conductance values configuration.
  • Negative – Negative signal processing.
    • Continuous Wave – Negative continuous wave (Default: 8).
    • Modulation – Negative modulation (Default: 8).
  • Positive – Positive signal processing.
    • Continuous Wave – Positive continuous wave (Default: 32).
    • Modulation – Positive modulation (Default: 32).
  • CRC – Receiver CRC (Default: False).
  • Decode Channel – Decode channel selection.
    • Auto Select – Automatic channel selection (Default: True).
    • Freeze During Communication – Freeze during communication (Default: True).
    • Use In-Phase Channel(I) – Use I-channel (Default: False).
  • Enabled – Enables receiver (Default: True).
  • External Input – External input configuration.
  • Demodulate – Demodulation settings.
    • Enabled – Enables demodulation (Default: False).
  • Frame Guard Delay (Clock...) – Frame guard delay.
  • Ignore Errors – Error ignoring (Default: False).
  • Minimal Signal Levels – Minimum signal levels.
  • Collision – Collision detection level (Default: 4).
  • Decode – Decode level (Default: 8).
  • Phase Locked Loop Time – PLL timing.
  • Burst – Burst mode (Default: 1).
  • Data Receiving – Data receiving mode (Default: 3).
  • Power Down – Receiver power down (Default: False).
  • Speed (kBd) – Receiver speed (Default: 106kBd).
• Transmitter – Transmitter configuration.
  • Additional Response Time – Additional response time (Default: 2).
  • CRC – Transmitter CRC (Default: False).
  • External Output Pin Mode (MFOL) – External output mode (Options: ThreeState, Low, High, Test, Modulation, TransmitterStream, ReceiverStream) (Default: ThreeState).
  • Force Amplitude Shift Keying – Force ASK modulation.
    • Inverted – Inverted modulation (Default: True).
    • Inverted External Input (MFIN) – Inverted external input (Default: False).
  • Miller Modulation Width – Miller modulation width (Default: 38).
  • Outputs – Output configuration.
    • Enabled – Enables outputs (Default: True).
    • External Modulation – External modulation (Default: False).
    • Pin1 (TX1) – TX1 pin configuration.
      • Enabled – Enables TX1 (Default: True).
      • Inverted When Disabled – Invert when disabled (Default: False).
      • Inverted When Enabled – Invert when enabled (Default: False).
    • Pin2 (TX2) – TX2 pin configuration.
      • Enabled – Enables TX2 (Default: True).
      • Inverted When Disabled – Invert when disabled (Default: False).
      • Inverted When Enabled – Invert when enabled (Default: False).
  • Unmodulated – Unmodulated output (Default: False).
  • True State – True state output (Default: False).
  • Remain Active – Remain active mode (Default: False).
  • Speed (kBd) – Transmitter speed (Default: 106kBd).

Pins

Input Pins

• Interface (i2c) – I2C communication interface.
• Reset (digital) – Hardware reset signal.

Output Pins

• Card Detected (digital) – Card detection signal.
• Card Type (text) – Card type identification.
• Card ID (binary) – Card ID identification.
• Version (integer) – Card version information.
• Overheated (digital) – Overheating detection.

Categories

• File:I2C.png – I2C communication interface components.
• File:RFID.png – RFID reader/writer components.
• – Wireless communication components.
• File:Security.png – Security and access control components.
• File:Communication.png – Communication protocol components.