Product description: Gravity series communication module with NFC tag - I2C / UART - DFRobot DFR0231-H
Gravity seriescommunication module with NFC tag manufactured by DFRobot. It uses the NXP PN532 integrated communication controller, which supports various types of smart proximity and bounce cards or NFC tags, including the MIFARE Classic and NTAG series commonly used on the market. It uses two buses: an I2C interface and a UART interface, which are selectable via a switch built into the board. It is compatible with 3.3V / 5V powered microcontrollers, which include Arduino, micro:bit, FireBeetle ESP32 or FireBeetle ESP8266.
The product iscompatible with Arduino
A product wiki page is available on the manufacturer's website, which includes a user guide and library for the Arduino IDE environment along with sample program code.
Key features
- Highly integrated NXP NFC controller
- Supports various types of popular proximity and bounce cards or NFC tags
- Compatible with controller operating at 3.3 V / 5 V
- The carrier frequency is 13.56 MHz
Suggested application
Pinout description
- 1 - D / T (SDA / TXD) - data transmission pin of I2C / UART interface
- 2 - C / R (SCL / RXD) - I2C / UART clock line pin
- 3 - GND - system ground
- 4 - VCC - power supply pin with voltage from 3,3 V to 5,5 V
- 5 - / - I2C / UART interface selection pin
- 6 - IRQ - interrupt output pin
- 7 - NA - power indicator (red signaling)
- 8 - / - NFC antenna
Technical specification of the communication sensor
- Circuit: NXP PN532
- Input voltage (VCC): 3.3 V to 5.5 V
- Communication interface: Gravity I2C and UART
- UART baud rate: 115200 bps
- Communication interface address: 0x48
- Communication frequency: 13.56 MHz
- Maximum communication distance: ≥10 mm
- Supported protocols:
- Reader/writer mode: ISO / IEC 14443A, ISO / IEC 14443B, MIFARE, FeliCa
- Card emulation mode: ISO 14443A / MIFARE Classic 1K or 4K, FeliCa
- Equivalent network: ISO / IEC18092, ECM340
Kit contents
- Gravity - UART and I2C NFC communication module
- Connection cable with Gravity 4-pin I2C / UART standard
- Connector goldpin 2.54 mm raster
- Sticker with NFC tag