Re: Chip Selection
I've never, and will never trust any Pull-up thing. As per their definition they are weak. nuff said. In a shielded enclosure with no external inputs, running off battery maybe they're fine... but not something I would use again on a final product since I already got issue with some handheld car instruments I've made years ago. Ununsed i/o are set to input and tied to GND directly, or with low value pull-down.
Some will say set them as output and left them floating... ok .. could be fine as long as you always have supply on your board.
GOOD ground plane will also help.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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