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In case of the board requiring the current more than 300mA, it should be mandatory to use an external power supply as explained in the next chapter.Įach part of STM32 Xnucleo including the extension board can be powered by USB(U5V). And 300mA current at maximum may be provided when 5V voltage is outputted to the Xnucleo board. In case the ST-LINK/V2 (mini) USB connector is used to power the Xnucleo board, the host PC will provide 150mA current at maximum as 3.3V voltage is outputted from the ST-LINK/V2 (mini) USB connector to the Xnucleo board. Power supply input from the USB connectorĪll parts of the STM32 Xnucleo board and Shield can be powered from the ST-LINK/V2 (mini) USB connector by the host PC. In case VIN, E5V, 3V3 or CN2 is used to power the Xnucleo board, you should use an external power supply unit.
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