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 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