FITUR DAN SPESIFIKASI : * 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) * Up to 5cm~7cm reading distance * On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI * Arduino compatible, plug in and play with our shield