https://www.ti.com/lit/an/swra601n/swra601n.pdf nice document to summarize https://www.youtube.com/watch?v=NEJgvSI6PW4 https://www.st.com/resource/en/application_note/an6146-introduction-to-certification-of-customer-products-using-stm32wb0-series-mcus-stmicroelectronics.pdf