What to do with all those left over pins
Guys,
What is one to do with all the left over port pins that are not used in an application of an sx chip.· I've noticed that I get very noisy transistions on open pins that are configured at High Z for imput but not connected.· Is there a standard parctice for these orphaned guys???· I do notice that when I configure these for output with '0' the noise seem to stop and things settle down.
Regards,
JJ
·
What is one to do with all the left over port pins that are not used in an application of an sx chip.· I've noticed that I get very noisy transistions on open pins that are configured at High Z for imput but not connected.· Is there a standard parctice for these orphaned guys???· I do notice that when I configure these for output with '0' the noise seem to stop and things settle down.
Regards,
JJ
·
Comments
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Thanks James!
JJ
When considering whether to tie a spare pin high or low, I often tie it high through a resistor, since many chip's i/o ports·can sink more current than they can source.· This way, if I need to use the pin for something later,·the "active" state is the low, high drive state.
My $0.02.
Jim