Eng.Abbasi
New Member
hello all
i was implementing ADC on pic16f877a, it work probably when i made the refernces voltage is the same Vdd,Vss for the pic , but when i tried to put other reference voltage at pin 4,5 it only display 0 or 255 , and when i change the frequency of the signal it change but only on these two num 0 ,255.
i'll be grateful if any one help me
i was implementing ADC on pic16f877a, it work probably when i made the refernces voltage is the same Vdd,Vss for the pic , but when i tried to put other reference voltage at pin 4,5 it only display 0 or 255 , and when i change the frequency of the signal it change but only on these two num 0 ,255.
i'll be grateful if any one help me