I'm using the 8052 (analog 812) to do AD conversion. I have a problem in that my analog input exceeds the internal voltage reference. I do not seem to be able to bypass this internal Vref with an external Vref. Is there an SCCON bit that needs to be set?? because I can't seem to find one on the data sheets. My input analog signal is also less then Avdd so I don't think this is the problem.
Thank You.