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有關PIC16F877AD參考電壓的設定
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中級會員
 
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想請問大家有關PIC16F877AD參考電壓的設定
我將ADCON1中最後4個BIT改成0011可以設定PORTA.3 為參考電壓利用可變電阻調節參考電壓的大小 但調整之後AD轉換的誤差越來越大且低於3V的時候 AD轉換出來的值就不對了 不知道是哪裡出了問題 是不是哪裡我沒有考慮到請大家教我一下3Q
發表於: 2007/6/25 12:14
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