It is said that the EEPROM has a lifetime of 100,000 write cycles. When the data is written every time the frequency changes, the life of the EEPROM may not last one year. For example, when the data is written every five minutes: 12 times per hour, 288 times per day (12 × 24), 8640 times per month (288 × 30), 103680 times per year (288 × 12). Please use the RAM when writing the data frequently.