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External power supply on MSP430F5529-LP boosterpack connector?

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Hi,
Is that possible to externally supply the MSP430F5529 throught boosterpack connect that expose +3V3 and/or +5V instead of attaching the power to the EZFET connector? Looking at the schematics there seem to be no diodes preventing the reverse current from the boosterpack but I’m not sure if that is going to blow my launchpad or not ;-)
 
Additionally, can I provide only  the 3V3 voltage and no 5V? Of course then I do not expect the USB facilities of the F5529 to work, I just need it to serve the GPIOs.
 
Best Regards,
Tomek
 

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