Guide to nRF51822 revisions? (LPCOMP, 12K pulldown)

[Guan Yang]

I'd like to use LPCOMP. I'd like to get rid of the 12K pulldown on SWDIO.

I can tell from PCN-082 that QFAA CA and C0, as well as QFAB AA and A0, will let me do that.

Since the 12K pulldown was a product anomaly, I've got to assume that any later revisions has that solved too. On Mouser, I can currently by QFAA R7 and QFAB R7. From the version code, it sounds like that is newer than CA or AA, but I am pretty sure that's not the case.

Is there a definitive list of all the nRF51822 revisions so I know if a feature I would like is present?

[Ole Morten]

The PCN explains all the differences between all revisions of the nRF51822, but you seem to have read it the other way around: it is in fact CA/C0 that does not have the LPCOMP and the internal pull down. As you can see in the "Marking/shipping labes" section, new devices will have FA, GC or G0 markings for the QFN, 256 kB package.

As for making sure to get a second revision chip, I'd currently recommend you to get in touch with our sales manager for your area. If you don't have the needed contact information, please send me a private message.

[Guan Yang]

So QFAA-R7 does, in fact, have LPCOMP and internal pulldown?