The result of excessive write cycles is shortened data retention. That 1 million writes/100 year retention rating means that even after a MILLION erase/write cycles the EEPROM still offers 100 years of data retention. You need to also consider the failure mode of cumulative wear from repetitive erase/write cycles at the byte level. This limits any wear to only the specific byte(s) being written. It also offers byte level read/writes instead of requiring entire pages or blocks to be erased during a write operation. That chip is rated at 1 MILLION write cycles and 100 YEARS of data retention. Nextion uses a 24C08 to provide the 1024 bytes of EEPROM on the Enhanced series.
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