nRF52532 max number of write times in one block

[Lennart]

Primarily addressed Torbjørn Øvrebekk, Nordic.

Refer document  nRF52832 Product Specification v1.4

I read " The same block in the Flash can only be written nWRITE number of times before an erase must be performed " where nWRITE is 181 and block is 512 bytes.

I did perform 4096 number of write zero operations bit by bit with successfully read back same data one by one, and all bits was successfully zeros after restart. I could repeat this process. Was I just "lucky" ?

Do I MUST erase after 181 writing, it mean I cannot even perform two write operations for all the 32-bits in one block without erase ?

[Lennart]

Thanks a lot now everything is 100% clear. I will then only write 32-bit words once, 128 times.

/ Lennart 

[haakonsh]

You do have 181-128 = 53 writes to spare, so you can do 75 32-bit words and 2 x 53 half-words. 

[Lennart]

Thank's Håkan 

Sure I know this option now, if I run out of flash in the edge. For me the ticket can be closed as I have all information now.

/ Lennart