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STM32F103 64 pin package. Vref questions

Question asked by Wood.Robert on Mar 2, 2016
Latest reply on Mar 2, 2016 by Clive One

The 64 pin package of the STM32F103 has no Vref pins. I can't see any way, though, of switching between external and internal ref for *any* of the parts.

I'm assuming that where there is no Vref pin, you can only use the internal Vref?

The internal Vref seems to be only 1.2V and you can't seem to feed this to the outside world. So, do you need another external 1.2V reference to feed to potentiometers?

You don't seem to be able to even use Vcc as Vref. Am I missing something or is the 64pin package not really very good if you want to use the ADC?

Thanks :)