Features: – Small dimension and easy to embed into your project – Support I2C, SPI and HSU (High Speed UART), easy to change between those modes – Support RFID reading and writing, P2P communication with peers, NFC with Android phone – RFID reader/writer supports: * Mifare 1k, 4k, Ultralight, and DesFire cards * ISO/IEC 14443-4 cards such as CD97BX, CD light, Desfire, P5CN072 (SMX) * Innovision Jewel cards such as IRT5001 card * FeliCa cards such as RCS_860 and RCS_854 – Up to 5cm~7cm reading distance – On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI – Arduino compatible