In a world increasingly driven by smart technology, embedded systems are the quiet heroes behind the scenes—powering everything from cars to industrial machines. This thesis dives into one such system: the SPC58NN84x microcontroller, a powerful chip designed for automotive applications. At the heart of the project is the Controller Area Network (CAN), a communication protocol that allows different parts of a vehicle to talk to each other reliably and efficiently. The journey begins with a hands-on exploration of how to bring this microcontroller to life. Using a combination of hardware boards, UART modules, and diagnostic tools like logic analyzers and debuggers, I built a test environment to evaluate how the CAN peripheral behaves under different conditions.