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STM32F205RB - unused pins

Question asked by rc51 on Feb 4, 2015
Latest reply on Feb 5, 2015 by Clive One
       
             

      Hello - I have a few questions on unused pins for this device -

             
                   
      1. We will not use the RTC.  Can we leave the LSE pins unconnected?  Or do we tie them to a rail?
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      3. We will not use the ADC, DAC, sensors etc.  Can we leave VddA open or do we have to supply Vdd power to it?  We’re trying to minimize power consumption so if we can leave the ADC, DAC etc. un-powered that would be best.
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      5. Per RM003 para 29.5 USB connects to PA9, PA11 and PA12 (peripheral).  Are other GPIOs supported or must we connect to these ports.
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      Thank you!

             

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