Uc32 J7 resistors

[btb4198]

what ohms are Uc32 J7  resistors? R22-R33?

I did not see it on here:

http://ww1.microchip.com/downloads/en/DeviceDoc/chipKIT%20uC32_rm.pdf

[Bianca]

Hello,

Here is the schematic of uC32. Tracking the signals from J7 (last page) you can see that is connected through 200Ohm resistances to the Port B of the microcontroller (3rd page).

Best regards,

Bianca

[btb4198]

yeah I saw that, but I am sending 4mA to it and I am getting 4V back so it cant be 200 ohms.

V = I * R

so V should be 0.8V

[Bianca]

It is 200Ohm. Just in case that our documentation might be wrong, I measured the resistances with a multimeter and I got 200Ohm. The information provided is correct. 

 

 

[Larry Standage]

btb4198: Where are you measuring 4V? You say 4V, but you don't indicate if that is across the resistor or some other point in the net.

0.8V makes sense if you are measuring across the resistor. But if you are measuring somewhere else, then it depends on your port settings, state, etc.

[Bianca]

Exactly. I measured across the resistances and I got 0.8V. I also tried to measure in other points along them and I couldn't obtain 4V. Where are you measuring?