nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

SwRa — Mon, 06 Nov 2023 06:37:27 GMT

No problem.

-Swathy

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

Valentine — Sat, 04 Nov 2023 00:50:26 GMT

Swathy:

Thank you for the update.

Valentine

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

SwRa — Thu, 02 Nov 2023 10:11:44 GMT

Hi Valentine,

Just a heads up.. I checked internally to see why such a claim was made and it turns out that LCSC is not an authorized Nordic Distributer, and hence cannot comment on their message.. But the nRF52832-CIAA-Rx has not been obsoleted and there are no plans at the moment. You could see here to know who are the authorized Nordic distributors: https://www.nordicsemi.com/About-us/FindDistributor

Best Regards,

Swathy

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

SwRa — Tue, 31 Oct 2023 11:35:06 GMT

Hi Valetine,

The APProtect (Access Port Protection) is a security feature designed to enable readback protection. You could take a look at it here: Working with the nRF52 Series' improved APPROTECT The fix is in accordance to the loophole to bypass this feature as has been discussed here: Will there be new silicon version of nrf52 to fix this APPROTECT loophole which has has been addressed and incorporated into the nRF52832-CIAA-G-Rx, whereas, the CIAA-Rx is pre-approtect fix.

[quote user="Valentine"]CIAA-G-Rx is the preferred one, however, CIAA-Rx is fine, correct?[/quote]

Yes, that is indeed right. The CIAA footprint will still be available. As for information's regarding EOL, you will need to get in touch with your Regional Sales Manager for this.

[quote user="Valentine"]Are the two basically identical? [/quote]

Yes, It is, only that the one has approtect fix, one does not. 🙂

Best Regards,

Swathy

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

Valentine — Mon, 30 Oct 2023 22:59:33 GMT

Mix layer Gerber view

Top Layer

Top Layer w/o soldermask and footprints

Second layer GND

Third signal layer sandwiched between first and 3-rd GND and itself filled with GND poured copper.

Fourth layer GND

Fifth layer GND, with a power trace sandwiched between the two GND 4 and bottom..

Bottom layer GND

PCB design view

Schematics

Close-up micro:

Cheers,
Valentine

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

Valentine — Mon, 30 Oct 2023 15:19:09 GMT

[quote userid="107732" url="~/f/nordic-q-a/105146/nrf52832-nrf52832-ciaa-rx-discontinued-eol-query/453044"]But the older ones are still available and can be used. Who is your supplier[/quote]

Swathy

Thank you for the reply.

My supplier is LCSC (https://www.lcsc.com/) and I'm manufacturing using JLCPCB (internally they use LCSC as an SMD supplier).

You are saying, CIAA-G-Rx is the preferred one, however, CIAA-Rx is fine, correct? The link you sent me says "Not recommended for new design" do I read this as near future EOL for that particular silicon, but the CIAA footprint and nRF52832 silicon per se will be maintained as new revisions?

Are the two basically identical? What is the impact of the Approtect fix? Anything I need to read up on? Is it critical?

Cheers!

Valentine

RE: nRF52832 [NRF52832-CIAA-Rx] Discontinued / EOL Query

SwRa — Mon, 30 Oct 2023 13:06:12 GMT

Hi Valentine,

The RF52832-CIAA-Rx are not discontinued and are still in production. See here: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/ordering_info.html?cp=5_2_0_51_4#prod_opt

The RF52832-CIAA-Rx is the older ones, which doesn't have Approtect fix in them, so we recommend using RF52832-CIAA-G-Rx for new designs for this reason. But the older ones are still available and can be used. Who is your supplier.?

Regards,

Swathy