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do you connect 0V or 3.3V first when you apply the power.
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I think that the potentials 0 V and 3.3 V only have a meaning if there is a voltage from one to another (or to a third potential in the device). So I don't understand the question and its aim.
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What kind of voltage regulator do you have on the board?
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It is a low-dropout regulator: ADP3338. It is on a different board.
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What is the source of all the inputs to the board?
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At present, there are only a bus (adresses, data, control signals - from a bus transceiver IC), 5 V (from a mains adapter) and 3.3 V (from the power regulator).
Honored Contributor
