https://devzone.nordicsemi.com/f/nordic-q-a/35664/maximum-number-of-pages-with-fstorageHi, I&#39;m currently trying to make a flash logger using the nRF51822_XXAB. I want to use as much space as possible in the flash storage for the logs. I will be logging a word every 10 seconds. I made a program that works well for that, using my first pageen-USTelligent Community 13Fri, 22 Jun 2018 16:32:07 GMThttps://devzone.nordicsemi.com/thread/137268?ContentTypeID=1Fri, 22 Jun 2018 16:32:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d0aab12f-ae99-4191-9e9c-0ef6c0da2f7ePhilemon<p>Ahhh, makes a lot of sense! Thanks for the quick answer!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/137267?ContentTypeID=1Fri, 22 Jun 2018 16:18:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:83788a5e-36d1-4d8b-9795-82820f23ecebtesc<p>Hi,</p> <p>If it is a BLE application (using the s130 SoftDevice v2.0.1) then you must account for both application size and SoftDevice size for the total flash memory usage.</p> <p>Just as you wrote, nRF51822 xxAB variants have 128 kB of flash.</p> <p>s130 v2.0.1 is 108 kB. Add 17 kB to that for 125 kB total SD + app, leaving 3 kB free space.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>