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What is the amount of voltage and current I get in each PORT pins of AT89S52 when it is at logic high state. And can it same for all the 4 ports or not.
hi, mr ganesh
in 8051 typr controller only 3 ports give 5volt high utput ,and also it will give very low current so no need strigtly connect the load so if connect transistor and u used load in micro controller 8051 gives approxi 20 mA it will give,
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