EEPROM
Special memory that retains values without power. Slow to read, slow to write.
Unlike flash, EEPROM can be modified on a byte-by-byte basis. However, EEPROM memory cells have a limited life, they can only be altered 100,000 or sometimes 1M times before failing. While this may seem like a large amount, remember a microprocessor running at full speed can do this many writes in a second, so some care needs to be taken to avoid overworking memory locations. These considerations make EEPROM the perfect place to store IP addresses, or to save infrequently changing data, but not to store rapidly changing quanties.
Unlike flash, EEPROM can be modified on a byte-by-byte basis. However, EEPROM memory cells have a limited life, they can only be altered 100,000 or sometimes 1M times before failing. While this may seem like a large amount, remember a microprocessor running at full speed can do this many writes in a second, so some care needs to be taken to avoid overworking memory locations. These considerations make EEPROM the perfect place to store IP addresses, or to save infrequently changing data, but not to store rapidly changing quanties.
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