Understanding nRF52832 package marking

[eyalasko]

Hi, 

I'm trying to relate the package marking to the IC revision or more specifically to the relevant errata sheet.

The documentation mentions the fields <PP><VV><H><P> fields in the 2nd line of the marking (here). Total of 6 letters

So QFAAB0 should translate to QFN , 512 KB, Revision B0 ('B' = Hardware version, '0' = production configuration code)

But in the device errata documentation there is a reference to "revision 2 QFAA-E00" (for rev 2 errata here). Total of 7 letters

1. How do I match the marking with the IC version/revision
2. As of today (Nov 2018) What is considered 'stable' or 'latest' version of the chip (hopefully with the list number of anomalies) ?
3. How can one identify 'engineering' version of the IC?

Thanks

[Andreas]

Hi,

 

1. See this section of the compatibility matrix. 'B00' (last 0 not marked on the QFN packet) means production revision 1, 'E00' means production revision 2.
2. Production revision 2 is latest, you can find the list of erratas for all revisions here.
3. Engineering revision devices have build codes on the form of 'AA0, , 'BA0', 'BB0', whereas production revision devices have build codes on the form of 'B00', 'E00'. I.e. the second symbol gives it away, Letter => engineering revision, number => production revision. Note as the last 0 is not printed on the chip packet itself, the reading will be either QFAAAA, QFAABB, QFAAB0, QFAAE0. For nRF52832 there should not be any engineering revision devices around anymore, unless you have any DKs (version lower than v1.0.0) or samples acquired before early 2016.

 

Best regards,

Andreas