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ADuC 702x external voltage reference Vref

Question asked by analogNoob on Jul 31, 2018

Hello,

 

I am planning on using the ADuC702x MCU for an application (aduc7022 specifically, first time using this mcu).

 

I expect an analog input from the range of 0V - 3.3V. However I see that the ADuC702x has an internal 2.5V Vref, reference voltage for its ADC. 

The datasheet sheet states that the band gap reference (which I assumer means 0V-Vref) can be changed from the 2.5V from an external reference.

 

Does this simply mean I can route 3.3V to the Vref pin (pin 33), program REFCON = 0x00, and I should be able to use the ADC for a range from 0V-3.3V? 

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