This product uses a high-performance ARM Cortex-M0 32-bit kernel with a maximum operating frequency of 48 MHz, built-in high-speed memory, rich enhanced I / O ports and peripherals connected to an APB bus. All models of devices include 112-bit ADC, 5 universal 16-bit timer, 1 advanced PWM timer, 2 voltage comparators and 3 operational amplifiers. They also include standard and advanced communication interfaces: 1 I2C, interface and SPI interface, and 1 USART interface. The power supply voltage of this product is 2.0V to 5.5V, including the temperature range of-40°C to + 85°C and the extended temperature range of-40°C to + 105°C. A series of power-saving modes ensure the requirements of low power consumption applications. The product provides two different packaging forms, including 32 feet and 48 feet; according to the different packaging forms. The following is a basic introduction of all the peripherals in this series of products.