U216 · M5Stack
Unit NFC 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… (M5Stack U216)
| Part number | U216 |
|---|---|
| Manufacturer | M5Stack |
| Category | Communication & Wireless › NFC & RFID Readers |
| Pins | 4 |
| Current | 14.443 kA |
| Frequency | 13.56 MHz |
NFC Universal Unit (ST25R3916) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | SIG1 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 2 | SIG2 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 3 | 5V | power | |
| 4 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Related parts
Grove - 125KHz RFID Reader113020002
PN532 NFC/RFID controller breakout boardADA364
RFID 2 Unit (WS1850S)U031-B
SparkFun RFID Qwiic ReaderSEN-15191
Adafruit ST25DV16K I2C RFID EEPROM Breakout - STEMMA QT / QwiicADA4701
Gravity: UART & I2C NFC ModuleDFR0231-H
Grove - NFC(PN532)113020006
SparkFun Qwiic Dynamic NFC/RFID TagSEN-21274