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Original question:

DP83826I: Development Board

DP83826I: Volts over Vdd

Alicia Rosenberger
Genius 13670 points
Part Number: DP83826I

Hi,

To balance heating, I am running the DP83826I ( Vdda & Vddio tied together ) on a separate 3.3V regulator from the microcontroller and other logic. The 3.3V regulators could mismatch by at most 0.14V ( e.g. +0.14V disparity, or -0.14V disparity ). The Ground as usual is identical & tied together. Also, the microcontroller seems ok with +0.3V over Vdd.

How many volts over Vdd is the DP83826I ok with for I/O signals?

Thanks,

~Alicia