Curious what the input impedance is on analog in with a pull up turned on, is it 100K?
The analog input impedance will be close to the resistance of the pull resistor.
The resistance values of resistors vary depending on the input.
Do you have a specific use case in mind?
Pinout document from here:
https://www.ecumaster.com/products/emu-pro/
What I mean is, generally there is some form of impedance to ground and the pull. I can’t find anything besides the single selectable pull resistance in the EMU Pro. I’m asking so we can characterize sensors properly.
There is a 1 Mohm resistor from the input to the ground at all times.
If you are talking about characterizing NTC sensors, there is no need to include that resistance.
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Thats what I was wondering, thank you.