User Row

In addition to the EEPROM, the ATtiny1614/1616/1617 has one extra page of EEPROM memory that can be used for firmware settings, the User Row (USERROW). This memory supports single byte read and write as the normal EEPROM. The CPU can write and read this memory as normal EEPROM and the UPDI can write and read it as a normal EEPROM memory if the part is unlocked. The User Row can also be written by the UPDI when the part is locked. USERROW is not affected by a chip erase.