9.2 Overview

The NVM Controller (NVMCTRL) is the interface between the CPU and Nonvolatile Memories (Flash, EEPROM, Signature Row, User Row, and fuses). These are reprogrammable memory blocks that retain their values when they are not powered. The Flash is mainly used for program storage and can also be used for data storage, while the EEPROM, Signature Row, User Row, and fuses are used for data storage.