[beagleboard] Slew rate when toggling Enhanced GPIO pins in the PRU?

The PRU rise and fall times are 1.00 - 3.00 nSec. Your scope probe or application circuit may be limiting the slew rate. Another possibility is your oscilloscope input is bandwidth limited. If you are using a 1X scope probe it will contribute significant capacitive loading and slow the edges way down.

Keep us informed with your progress and good luck.


Lowell Bohn
Chief Engineer
Basis Vector LLC
(303) 249-3763

First of all, Thank you all for your help and suggestions.

It turns out it was the fault of the oscilloscope. I found a better model and found my rates to be ~1.5ns.

In case anybody was curious, this is being designed to control a radioactive electron measurement ASIC.