ESP8266 Community Forum

- Wed Oct 05, 2016 4:00 pm #56118 Hi !
I Wonder how long esp memory will work. I woud save two bytes every 30 s
to 0 and 1 address in esp eeprom ( I know this two bytes will be safe to esp flash, but in arduino ide it's still called eeprom).

- Wed Oct 05, 2016 6:51 pm #56126 Check the data sheet for your specific eeprom part.

Normally eeproms have 100k - 1M write cycles per location these days.

You could implement a simple wear levelling algorithm to extend the lifetime.

Now assuming the worst case 100k writes, if you write every 30 seconds, you could write your values for approximately 50,000 minutes, which is approx. 34.7 days

- Wed Oct 05, 2016 8:13 pm #56128

Check the data sheet for your specific eeprom part.

It seems that he said for the ESP8266 part and not for an external part.

- Tue Oct 11, 2016 5:43 pm #56392 Oops, my bad.

The expressif data sheet should show eeprom life, and wear levelling can extend that.