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RE: leave unconnected pins open?
All inputs should have a well defined state. Bi-directional unused GPIO pins can be set to output.
From: Alex Raimondi [mailto:firstname.lastname@example.org]
Sent: den 3 december 2002 15:39
Subject: leave unconnected pins open?
What should I do with unused pins such as gXX_in, rxd1(T17), cts1 (V19) and
other gXX (shared in-/output) ports? Can we leave them unconnected or should
we pull them up by external pullup resistor?