banh
Advanced Member level 1
i'm testing the ADC module of the microcontroller i'm using. 10-bit adc, so that maximum value is 0x3FF.
if there is an input volatge the read value will be changed accordingly.
however, one thing is that if i left the adc input pin unconnected, the read value is 0x3FF.
is there any reason for this value? why is it not 0x0?
if there is an input volatge the read value will be changed accordingly.
however, one thing is that if i left the adc input pin unconnected, the read value is 0x3FF.
is there any reason for this value? why is it not 0x0?