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
Whats on Board
Raspberry Pi GPIO connector: for connecting with Raspberry Pi
PN532 control pins: for connecting with other host boards like STM32
NFC induction coil
PN532 chip: NFC controller
Power indicator
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)
Mode selection:
I0-L, I1-L: enable UART
I0-H, I1-L: enable I2C
I0-L, I1-H: enable SPI
INT0 jumper: response signal, connects to Raspberry Pi D16
RSTPDN jumper: reset signal, connects to Raspberry Pi D20
Dimension

Part List
PN532 NFC HAT x1
MIFARE Classic 1K Card x1