The keyword encapsulates three fundamental pillars of embedded system programming: immutable identity storage (OTPBIN), flexible configuration memory (Seeprombin), and the mechanism to deliver updates (UPD). Understanding each component allows engineers to design secure, updateable, and traceable hardware products. Whether you are debugging a failing update, setting up a manufacturing line, or reverse-engineering a proprietary firmware pack, mastering these concepts is invaluable.
avrdude -c usbasp -p m328p -U eeprom:w:eeprom.bin:r otpbin seeprombin upd