Datasheet

compatibility between Rev. G and older revisions, must ensure that CKOPT is unprogrammed
(CKOPT = 1).
5. Reading EEPROM by using ST or STS to set EERE bit triggers unexpected interrupt request.
Reading EEPROM by using the ST or STS command to set the EERE bit in the EECR register
triggers an unexpected EEPROM interrupt request.
Problem Fix / Workaround:
Always use OUT or SBI to set EERE in EECR.
AVR 8-Bit Microcontroller
Errata
© 2017 Microchip Technology Inc.
Datasheet Complete
40001974A-page 395