The STM8AF6x26/4x/66/68 is a 8-bit microcontroller of the STM8A series, with a maximum CPU speed of 16 MHz, up to 32 Kbytes of Flash memory, 0.5-1 Kbytes of data memory (EEPROM), 10-bit ADC, Timer, LIN, SPI, I2C interface, working voltage range of 3-5.5 V.