nRF51822 - ID

[Jose Xavier]

Hello,

There is any unique ID per chip that we can use? On my application I'm able to add and remove devices from network, each network consist on 5 to 10 devices. I'm planing to product 100 units, will I need to program a different id code to identify each chip?

thank you

[endnode]

Hi Xavier,

Have you read the nRF51 Reference Manual (UICR and FICR chapters)? You will find the answers there (or you can see other posts on this forum such as: devzone.nordicsemi.com/.../ ). Basically you have 8-byte ID burned into the chip and additional register area which can hold some diversified ID at the programming stage.

Cheers Jan

[awneil]

endnode said:

Have you read the nRF51 Reference Manual (UICR and FICR chapters)? You will find the answers there

Actually, the answer that you will find there is wrong!

The manuals incorrectly state that the DEVICEID is "unique"; it is not - it is random.

https://devzone.nordicsemi.com/f/nordic-q-a/49664/deviceid-is-unique---but-is-it-random/198061#198061