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interfacing 3.3v logic with 5v logic
I want to make a one-wire-lan adapter for the etrax lx development board
and develop bit-bang software for it.
Are the parallel ports suitble for this (these are the only ports that
are brought out on a header.
Also I want the e-trax to interface to an external i2c bus. (is the
internal i2c bus brought out on a header somewhere ?
Can someone please give me some tips to interface 5v logic to the 3.3v