In other cases, an external permanent storage device can be used for storing permanent settings like the MAC address: for the Bora/BoraX product family, DAVE proposes to use the OTP block on NOR SPI flash for storing permanently ConfigID, UniqueID and MAC address.
=== About this document ===
In this Application Note, we will describe how to use the Bora/BoraX NOR SPI for programming and using the MAC address programmed on its OTP block area.