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unused prn/clrn inputs

Altera_Forum
Honored Contributor II
1,767 Views

Noob question if I may. 

In the schematic editor, how should I pull up unused prn/clrn inputs to a flip flop? 

Currently I tie them to an unassigned input pin default vcc. Circuit works fine, but that doesn't seem right.
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Altera_Forum
Honored Contributor II
943 Views

Hi, 

 

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In the schematic editor, how should I pull up unused prn/clrn inputs to a flip flop 

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Using Assignment Editor you can pull up, check the screenshot. 

https://www.altera.com/support/support-resources/operation-and-testing/io/io-features.html#programmablepullupresistor 

 

Let me know if this has helped resolve the issue you are facing or if you need any further assistance. 

 

Best Regards 

Vikas Jathar  

(This message was posted on behalf of Intel Corporation)
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Altera_Forum
Honored Contributor II
943 Views

I know about pin pullups, thanks. My question was about unused flip flop inputs. Using discreet logic I would pull these up. Currently I'm assuming if I leave them unconnected the synthesizer will optimise the function out. Seems to work.

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Altera_Forum
Honored Contributor II
943 Views

Hi, 

Can you please brief your question with Schematic editor (screenshot), what are you trying to do & what issue are you facing? 

 

Best Regards 

Vikas Jathar  

(This message was posted on behalf of Intel Corporation)
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