The STC15W408S-351-SOP28 is an integrated circuit (IC) manufactured by STC. It is a single-chip controller that pairs a CPU with powerful peripherals, including UARTs, I/Os and timers. The package is a RoHS compliant SOP-28 with 300mil body size. The STC15W408S-351-SOP28 features an STC15W408S-351MCU core, 8K Bytes ROM, 512 bytes RAM, 4 channels 10-bit ADC, 4 channels PWM timer, 3 channels standard USART, 1 channel I2C bus, and 1 channel SPI bus. It is designed for control,interface, network communications and other embedded applications.