The RDS12GHVAC is a reference design based on the 16-bit S12G ultra-reliable microcontroller, the RDS12GHVAC consists of a central control board with Human-Machine Interface (HMI), a motor control board, flap and blower motors for enabling basic functions of an automotive HVAC using temperature, light, humidity, and air quality sensing interfaces with configurable automatic climate control software algorithm to efficiently control vehicle climate.