Low-power SoC equipped with RISC-V 32-bit single-core processor, up to 160MHz main frequency. Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE).400KB of SRAM and 384KB ROM, and 4MB of onboard Flash memory Castellated module and onboard ceramic antenna, allows soldering direct to carrier boards.Supports flexible clock, module power supply independent setting, and other controls to realize low power consumption in different scenarios Integrated with USB serial port full-speed controller, 15 × GPIO pins allows flexibly configuring pin functions 3 × SPI, 1 × I2C, 2 × UART, 1 × I2S, 2 × ADC, etc.