The STM8S207R6T6 is an 8-bit MCU from STMicroelectronics' STM8S value line, built around the STM8 core running at 24 MHz. It carries 32 KB of Flash program memory, 6 KB of SRAM, and 1 KB of EEPROM.
Peripherals and I/O — what connects where
The 16-channel 10-bit ADC samples at a rate that keeps up with a dozen thermistor inputs scanned at 10 Hz each — no external mux needed. On the serial side, you get I²C, SPI, UART/USART, LIN, and IrDA; the LIN controller is useful for automotive body-module gateways, and IrDA saves a wireless IR link for a handheld programmer.