NRF52832 Radio clock speed and triggers

[Andreas Wileur]

Hi,

I'm wondering what speed the NRF52832 radio is clocked at internally. is it the main 64MHz clock or 16MHz like the NRF51?

The reason I'm asking is that I would like to trigger a timer capture on the receive event and want as good resolution as possible. I'm considering updating to the 52 for better speed, but if it still runs all radio events at 16MHz then it makes no sense, right?

The datasheet and update guide wasn't quite specific on the issue.

Best regards, Andreas Wileur

[Ole Bauck]

The peripheral bus runs at 16MHz, so events can't come in faster than this. Only the cpu runs at 64MHz, see here. Also, the timer peripheral runs at maximum 16MHz as seen here.

[Andreas Wileur]

Thank you very much. That's what I was afraid of but it's good to get it confirmed.

Best regards, Andreas Wileur