M5Stack NFC Universal Unit (ST25R3916)

The M5Stack NFC Universal Unit is a versatile 13.56MHz NFC/RFID read and write module with support for multiple protocols, making it suitable for access control, identity verification, smart transport, and custom NFC applications.

The M5Stack NFC Universal Unit is a near-field communication read/write unit operating at 13.56 MHz.

The module features the ST25R3916 high-performance NFC front-end IC, supporting mainstream protocols including ISO 14443A, ISO 14443B, FeliCa™, and ISO 15693, enabling reliable read/write operations and data exchange with a wide variety of NFC/RFID tags and cards.

The IC supports reader/writer mode, card emulation mode, and custom protocol mode, with automatic antenna tuning, high-sensitivity reception, and comprehensive protocol handling capabilities. This unit communicates with the host device via I2C interface, ensuring reliable and stable data transmission.

The product features a LEGO-compatible hole design for easy structural integration and screw-mount installation, making it suitable for a wide range of near-field communication and identity verification applications, including access control systems, identity authentication, and smart transportation.

Features

• 13.56 MHz high-frequency near-field communication
• Equipped with ST25R3916 high-performance IC
• Supports ISO14443A, ISO14443B, FeliCa™, and ISO15693 protocols
• Supports three operating modes: Reader/Writer / Card Emulation / Custom Protocol
• I2C Communication interface
• LEGO-compatible mounting holes
• Development Platform
  • UiFlow2
  • Arduino IDE

Specifications

Resources

• Product documents

Package Contents

• 1x M5Stack NFC Universal Unit (ST25R3916)
• 1x HY2.0-4P Grove Cable (20cm)