maximum input frequency on GPIO port of nRF52840

[manoj008]

Hi,

What is the maximum frequency that i can capture on GPIO port of nRF52840 ?

I'm planning to capture a frequency of 32MHz from a sensor on GPIO pin , can I do this ?

Thanks,

[awneil]

What, exactly, do you mean by "capture" ?

[manoj008]

I mean ,i want to sample a clock of max 32MHz on GPIO pin . Is it possible ?

[awneil]

That's not much clearer!

If you actually want to do any processing of that, then the CPU speed is going to be a (the?) limiting factor ...

[manoj008]

How many cycles does CPU take to read gpio port ?

What is the maximum clock for system as well as GPIO peripheral ?