Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Weak pull-up resistors

Hi everyone! I enabled weak pull-ups for the input and output pin (cyclone II device). But when I measure the voltage on these pins, on the input pin is 3V and on the output pin is 0V. Shouldn...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I'm am not driving the output pin low. I wanted just to check if it will be high after programming the device. The peripheral which I will connect the FPGA to requires the signal to be high. I use voltmeter to measure the voltage on the pins after programming the device. After compiling the project, there is one warning about the output pin that says: "Output pin is stuck at GND". I will follow your suggestion Dave and see if there are any changes.

Thanks,

Nikola