saneesh george
New Member
Haii all ..
I have a doubt with analog inputs in pic16f877a....I have designed a temperature indicator using lm35 and pic 16f877a(AN0 pin used) it is working well also.I found a scenario that when we connect any of other analog inputs (AN1 to AN7) to VCC then the temperature reading increasing by 15 degree(ie 150 mv).I measured the voltage at AN0 pin and it not have an increase of 150mv.So the error may be an internal...? How this type of interference occurs. May be this is a simple question for professional...but i am a beginner ...help me
I have a doubt with analog inputs in pic16f877a....I have designed a temperature indicator using lm35 and pic 16f877a(AN0 pin used) it is working well also.I found a scenario that when we connect any of other analog inputs (AN1 to AN7) to VCC then the temperature reading increasing by 15 degree(ie 150 mv).I measured the voltage at AN0 pin and it not have an increase of 150mv.So the error may be an internal...? How this type of interference occurs. May be this is a simple question for professional...but i am a beginner ...help me