Xnucleo User Manual Waveshare
5
V2.5.3, Apr. 13th 2015
For using an external power supply, connect the power supply socket
CN2 on the Xnucleo board to a 6~12V power adapter.
3) Connect the ST-LINK/V2 (mini) debugger/programmer to the SWD
connector
Notices: It is recommended to plug in the USB power supply or the
external power supply before connecting the ST-LINK/V2(mini) module
to the SWD interface. Otherwise, the ST-LINK/V2(mini) initialization may
be failure.
1.2.2 Observing the actions
The blinking of the USER LED indicator will change from fast to slow or from
slow to fast, when clicking the USER key.
2. Hardware configuration
2.1 Power supply settings
The power supply of the STM32 Xnucleo board is provided either by the host
PC through the USB cable, or by an external source:
VIN (7V~12V) or +3V3 power pins on CN6;
E5V(5V) pin on CN7;
CN2 power supply connector (7V~12V).
In case VIN, E5V, +3V3 or CN2 is used to power the Xnucleo board, you should
use an external power supply unit.
2.1.1 Power supply input from the USB connector
All 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 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.
And 300mA current at maximum may be provided when 5V voltage is
outputted to the Xnucleo board. 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.
Each part of STM32 Xnucleo including the extension board can be powered by
USB(U5V). However, if the maximum current consumption of the board
exceeds 300mA, the USB may be damaged. When the board is power supplied
by USB(U5V), a jumper must be connected between pin 1 and pin 2 of JP5 as
shown in Table 2.
