NRF7002DK using high speed SPI4

RE: NRF7002DK using high speed SPI4

runsiv — Thu, 19 Jun 2025 05:29:20 GMT

Please see

https://docs.nordicsemi.com/bundle/ug_nrf7002_dk/page/UG/nrf7002_DK/hw_external_memory.html

and https://docs.nordicsemi.com/bundle/ug_nrf7002_dk/page/UG/nrf7002_DK/solder_bridge.html
Seems like it should be enough to solder the bridges to connect the pins to the header. Also remember

There is no need to remove the external flash

Regards

Runar

RE: NRF7002DK using high speed SPI4

Turbo J — Wed, 18 Jun 2025 07:27:47 GMT

You can reconfigure SPIM4 pins to other GPIOs with a DTS overlay and it seems to work all the way up to 32MHz if you remembered to configure pins to high drive mode. That way you don't need a soldering iron here.

Note that I have tested the 32MHz only on a finished PCB and not with a DK board and the frequency is high enough to get into possible HF problems with long cables.

Datasheet is a bit unclear if general purpose GPIOs can be used for 32MHz SPI mode.