The STM8S903K3T6CTR is an 8-bit microcontroller from STMicroelectronics, designed for cost-sensitive applications. It features 8 KB of Flash memory, 1 KB of SRAM, and operates at a maximum clock frequency of 16 MHz. The microcontroller includes a variety of integrated peripherals, such as timers, an 8-channel 10-bit ADC, and several communication interfaces like UART and SPI. With its low power consumption and versatile I/O options, the STM8S903K3T6CTR is well-suited for embedded systems in consumer electronics, automotive, and industrial applications. Its robust architecture ensures reliable performance, making it an ideal choice for developers looking to create efficient and compact designs.