Latest (1.1) nRF52832 QFAx reference design confusion

RE: Latest (1.1) nRF52832 QFAx reference design confusion

Hung Bui — Thu, 11 Jan 2018 09:48:58 GMT

Hi Sam,

It should be fine, just set P0.25 P0.26 and P0.27 as output as set them to 0.

RE: Latest (1.1) nRF52832 QFAx reference design confusion

Sam — Wed, 10 Jan 2018 21:49:34 GMT

My design is already in production for US and we just started to cert CE. The device failed currently, and passed only when we tied these two pins to GND. Before booking another trip to the lab, will it be the same by driving '0' on P0.25 and P0.26 in high drive mode? Will this pass CE limits? Thanks.

RE: Latest (1.1) nRF52832 QFAx reference design confusion

Hung Bui — Mon, 19 Dec 2016 12:18:47 GMT

Hi Lauri,

We updated the reference design due to a PAN (ERRATA) we found lately. Please refer to the Errata here. It's at PAN #138.

Please note that, you only need these 2 caps if you plan to use P0.25 and P0.26. If you don't use them you can simply connect them to the center pad to save cost and space.

Regarding your second question, C6 only needed for WLCSP and not needed for QFN48 package, so you don't need to populate it in your QFN design.