This is a frequently asked question in the world of Automotive Safety, especially for programs up to ASIL B. There are contradicting answers to this question even amongst Safety Industry experts and every answer is based on its own rationale. In this blog, we have provided a background on what is core self-test and why is it needed from a functional safety standpoint. Background Typically, when we develop an item that is required to be ASIL compliant, it is state-of-the-art to choose a Microcontroller that is designed for ISO 26262 compliance. Microcontrollers that are ASIL certified are developed as per the HW development processes specified by ISO26262. They also incorporate safety mechanisms to detect, correct or prevent (if possible) systematic and random faults. These safety mechanisms provide sufficient diagnostic coverage against faults and enable the Microcontroller to achieve a FIT rate that is sufficiently low, so that the Item that is integrating it can meet its required FIT...