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EMX Current sink and source


#1

Hi,

How much current can the EMX module pins sink/source.

I would like to source current for the Ethernet link and speed LED’s (J13 and J14) rather than sink it like in the EMX DevSys.

Any help greatly appreciated


#2

It depends on what is also connected to other pins.
If I remember well you should not exceed a total of 20mA and 3-5mA per pin. But maybe GHI can confirm or not.

Maybe you can dig into the LPC2478 user manual. For an other chip, this was also a big question: https://www.ghielectronics.com/community/forum/topic?id=1290&page=1