When write protection is applied during the internal write cycle time, write operation is terminated and data in the EEPROM is destroyed with the values becoming undefined. This will require another write operation.
Short for Electrically Erasable Programmable ROM, EEPROMs are a type of non-volatile memory that allows data to be written to each address via electric signals. ROHM EEPROMs are capable of an industry best 1 million rewrites and retains data for up to 40 years. ROHM's unique double cell technology has been incorporated into the entire lineup, resulting in remarkably high reliability (zero accidental defects).