nRF52 PCA10040

[Usman Rashid]

Hi,

I have Nordic NRF52 DK. What chip does it have? because there are quite many chips of NRF52 series and can you also tell me about the PCB reference design of the chip?

[gxf]

Hi Jorn

By checking your mentioned documents link above. nRF52832 has cortex-M4 MCU. It using Atmel SAM3U2C MCU. But SAM3U2C is cortex m3.

What is going on?

[Jørn]

The nRF52832 has a ARM Cortex M4F MCU. The Atmel SAM3U2C you mention is a separate MCU mounted on the development kit, and works as a on-board Segger J-Link interface. When you connect to the board via USB, you are communicating with the SAM3U2C, which then handles flashing and debug of the nRF. You can read more about it over on segger's website.