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Altera_Forum's avatar
Altera_Forum
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18 years ago

10 things that should be enabled in Quartus by default, but are not...

Hello, I've compiled a list of things that have are enabled in Quartus by default, but really shouldn't be for most designs. I've seen issues in the lab with some of these default settings, so hopef...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

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I agree this "burns" a lot of us. Pun intended. The reasoning behind defaulting as outputs driving GND is for power consumption reasons. Floating inputs may oscillate with noise causing unwanted power consumption. For a large device and package this really adds up. The downside is when using dev kits and not remembering that this setting must be changed every time!

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OK, that almost makes sense. May I suggest "As inputs with weak pull-up" as the default? It's less likely to damage something than driving ground as well as able to deal with floating inputs. Seems win-win to me...