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ken-salt's avatar
ken-salt
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5 years ago

Weak Pull Up Setting

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. I...
ken-salt's avatar
ken-salt
Icon for New Contributor rankNew Contributor
5 years ago

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

EngWei_O_Intel's avatar
EngWei_O_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

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_tab_dp_unused_pins.htm

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/logicops/def_weak_pull_up.htm

Both are different setting.

Thanks.

Eng Wei