Microchip Technology ATWINC3400 SPI+UART to Wi-Fi® and BLUETOOTH® Low Energy (BLE) Module is designed to quickly and easily add wireless connectivity to Internet of Things (IoT) applications. The ATWINC3400 Module is an ideal add-on to existing Microcontroller (MCU) solutions offering Wi-Fi and BLE network capabilities through an SPI-to-Wi-Fi interface. The ATWINC3400 connects to any Microchip PIC® or SAM MCU with minimal resource requirements.