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Weak Pull Up Setting

ken-salt
Beginner
362 Views

When compiling a Cyclone10 LP device, unused pins are set to “As input tri-stated with weak pull-up”.

Looking at the compiled report, the  display is different only for unused VREFB pins.

weak_pull_up.png
Is Weak Pull Up enabled for this pin?

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4 Replies
EngWei_O_Intel
Employee
329 Views

Hi there

 

You can refer to .pin file on the connection for the unused pins. The .pin file will be generated after completion of the Fitter compilation.

 

You can also refer to link below:

https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/soluti...

 

Thanks.

Eng Wei

ken-salt
Beginner
320 Views

The pin number "AB4" enclosed in red is an unused VREFB pin. Is Weak Pull Up enabled?

 

weak_pull_up.png

EngWei_O_Intel
Employee
300 Views

Hi

 

What view is this in Quartus tools?

 

As far as I understand, you could set the unused pin as shown here:

https://www.intel.com/content/www/us/en/programmable/quartushelp/13.0/mergedProjects/comp/comp/comp_...

 

whereas the Weak Pull-Up Resistor shall be set through pin planner or assignment editor:

https://www.intel.com/content/www/us/en/programmable/quartushelp/13.0/mergedProjects/logicops/logico...

 

Both are different setting. 

 

Thanks.

Eng Wei

 

EngWei_O_Intel
Employee
229 Views

Hi there


I hope you are doing fine. We do not receive any response from you to the previous reply that have been provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.


Eng Wei


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