PN532 NFC HAT for Raspberry Pi, Arduino, and STM32, I2C / SPI / UART

Key Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
• Onboard PN532 chip, supports various NFC/RFID cards like MIFARE/NTAG2xx, etc.
• Three interface options: I2C, SPI, and UART, configured via jumpers and switches
• Breakout control pins, for easily connecting with host boards like STM32/Arduino
• Comes with development resources and manual (examples for Raspberry Python/C, STM32, Arduino)

Description

This is a Raspberry Pi NFC HAT based on PN532 operating in the 13.56MHz frequency range. It supports three communication interfaces: I2C, SPI, and UART.

NFC (Near Field Communication) is a wireless technology allows contactless point-to-point data communication between devices within a short distance of 10 cm. It is widely used in applications such as access control systems, smart tickets, meal cards, etc.

Based on the popular NFC controller PN532 with multi-interface options, this HAT will easily enable NFC function for your Raspberry Pi.

Specification

• NFC controller: PN532
• Operating voltage: 3.3V/5V
• Operating frequency: 13.56MHz
• Communication interfaces: I2C, SPI, UART (default)
• Default baud rate: 115200 bps
• Operating modes:
  • reader/writing mode supporting ISO/IEC 14443A / MIFARE scheme
  • reader/writing mode supporting FeliCa scheme
  • reader/writing mode supporting ISO/IEC 14443B scheme
  • card operation mode supporting ISO 14443A / MIFARE scheme
  • card operation mode supporting FeliCa scheme
  • ISO/IEC18092, ECM340 point-to-point

Applications

• Contactless payment system
• Bluetooth and WiFi devices chaining
• Social sharing function like sharing contacts, photos, and videos
• Smartphone NFC app

What's on Board

1. Raspberry Pi GPIO connector: for connecting with Raspberry Pi
2. PN532 control pins: for connecting with other host boards like STM32
3. NFC induction coil
4. PN532 chip: NFC controller
5. Power indicator
6. DIP switches: for configuring the connection between PN532 and Raspberry Pi (only one of the I2C/SPI/UART can be connected at the same time)
7. Mode selection:
   • I0-L, I1-L: enable UART
   • I0-H, I1-L: enable I2C
   • I0-L, I1-H: enable SPI
8. INT0 jumper: response signal, connects to Raspberry Pi D16
9. RSTPDN jumper: reset signal, connects to Raspberry Pi D20

Dimension

Part List

1. PN532 NFC HAT x1
2. MIFARE Classic 1K Card x1