Hi Paul, The above settings help to enable the internal adc reference voltage(2.5v). But still I am having problem with ICONV bit in AMC configuartion register0. The value of ICONV bit is giving zero although I had set the INCOV bit to 1. Also i tried to change the AMC configuration register1(0x4D) values for different adc conversion speed, by setting the CONV-RATE-1 and CONV-RATE-0 values but still I am getting the random values of ADC, not the proper values. Also when, I sets the ADC-REF-INT value in amc configuration register only once, then internal adc reference voltage(2.5v) resets to 0 v after approximately 2-3 minutes, and when I sets this value again and again then the adc reference voltage(2.5v) is maintained.
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