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Vref- minimum on stm32f103

Question asked by fischer_gundlach.jus on Feb 6, 2014
Latest reply on Feb 6, 2014 by sung.chen_chung
Hello together,

i´ve been searching for information about the minimal voltage wich has to applied to Vref-.
In particularly it is around the stm32f103CBT6. I´ve used the search function in the RefManual, but could only found out that Vref+ must be >= Vdd.
How´s about Vref-?
Has someone a hint to respective document?

best regards,