# Where in LMiC is the "fCnt" parameter stored?

**URL:** <https://www.thethingsnetwork.org/forum/t/where-in-lmic-is-the-fcnt-parameter-stored/3082>\
**Category:** Uncategorized\
**Created:** [August 9, 2016, 12:19pm UTC](https://www.thethingsnetwork.org/forum/t/where-in-lmic-is-the-fcnt-parameter-stored/3082 "2016-08-09T12:19:50Z")\
**Posts on this page:** 1\
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**Author:** ![jmarcelino](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jmarcelino/32/46753_2.png) [@jmarcelino](https://www.thethingsnetwork.org/forum/u/jmarcelino)\
**Post date:** [August 9, 2016, 10:30pm UTC](https://www.thethingsnetwork.org/forum/t/where-in-lmic-is-the-fcnt-parameter-stored/3082/5 "2016-08-09T22:30:46Z")

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EEPROMs usually have limited write cycles and the datasheet for both Arduinos and the PIC18LF46K22 micros inside the RN2483 module lists 100,000 erase/write cycles.

This means if you’re sending 5 messages/hour every day and recording to EEPROM every time you’ll potentially kill the EEPROM in about 2 years.

Maybe not a huge concern, just something to keep in mind.

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