nRF51822 revision

RE: nRF51822 revision

Fredrik Sundt Brynhildsvoll — Thu, 07 May 2015 08:31:54 GMT

The 'T' and the 'R7' describe the packaging of the chip. On page 74 in the product specification (available here) you can read that the 'T' means tray and 'R7' means 7''Reel.

In the future, please post questions in a new post, not as a comment on old ones. We follow up all new questions, but we can only answer questions in comments when we find them (by chance).

RE: nRF51822 revision

chalecampb — Tue, 21 Apr 2015 21:24:40 GMT

Hi Stefan,

I ran into this post while trying to verify that I was ordering the correct part number, but I feel like I am still missing some information.

For example, I need the nRF51822-QFAC chip. This needs to be revision 3. The valid product number should then be, per Page 4 of the compatibility matrix, nRF51822-QFAC-Ax0. What Digikey (and Mouser) have listed are QFAC-T and QFAC-R7 product numbers.

T and R7 don't make any sense to me. T would be, according to section 10.6 in the PS v3.1, a hardware version of "T", no production identifier? R7 would be hardware revision R, production identifier 7?

I would expect something like a product number nRF51822-QFAC-Ax0, where the x is 0-9. Something like nRF51822-QFAC-A00 - why don't the available products on the distributor website match this scheme?

Thanks, -Alex

RE: nRF51822 revision

Stefan Birnir Sverrisson — Mon, 03 Nov 2014 11:40:00 GMT

To identify what nRF51822 chip you have, read the "How to identify the harware revision" in nWP-021.

The hardware revision of nRF51822 can be determined by looking at table 1 in the nWP-021 white paper.

The chips that have Product Specification document v1.x in table 1 are first revision nRF51822 hardware
The chips that have Product Specification document v2.x in table 1 are second revision nRF51822 hardware
The chips that have Product Specification document v3.x in table 1 are third revision nRF51822 hardware

Update 28.1.2015 A more obvious way to see the hardware revision of any nrf51 chip is to look at the nRF51 compatibility matrix

Update 8.5.2015 To see the hardware revision, RAM size and ROM size progrmmatically, call the nrf_ic_info_get function defined in \nRF51_SDK_8.1.0_b6ed55f\components\libraries\ic_info\nrf_ic_info.h. This function is new for nRF51 SDK 8.1.0, it is not present in SDK 8.0.0