We have been manufacturing for a while with the nRF51822, Revision 2, and WLCSP package and build code D0 (D0 is what Nordic recommended me to spec to contract manufacturers in China. Honestly have never really understood exactly how Dx0 translates to D0). At our board level testing we check the chip revision to make sure everything is OK and for many thousand units it has been reporting 004D which matches the compatibility matrix.
This morning the chips started reporting 006A and I cannot find this in the compatibility matrix. Could someone help me decipher what this is? Could someone also help me know all valid chip revisions so I dont have any more line down situations?
Thanks in advance for the help!