8.8 USERROW - User Row

The AVR16EB14/20/28/32 devices have a special 64-byte memory section called the User Row (USERROW). USERROW can be used for end-production data and is not affected by chip erase. It can be written by the Unified Program and Debug Interface (UPDI) even if the part is locked, which enables storage of final configuration without having access to any other memory. The UPDI is not allowed to read the content of the USERROW when the part is locked.

The CPU can write and read this memory as an ordinary Flash. Refer to the System Memory Address Map for further details.