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atmega 8 current consumption

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vamsi.kodati

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atmega current consumption

what does source and sink current mean?
what is the max current atmega can give as output..
if i want atmega 8 to have minimum current consumption , should the ports be input or output ..if input pulled up or not

can any one pl help with these things..
 

assume an led connected to a pin of micro.if anode connect to micro and cathode connect to gnd it is source mode.if cathode connect to micro and anode connect to vcc it is sink mode.
 

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