Hardware layout and configuration UM2324
20/44 UM2324 Rev 2
CHG configuration: jumper JP2 [7-8] must be connected as showed in Figure 12.
Figure 12. JP2 [7-8]: CHG power source
6.5.2 External power supply output:
• 5V: The 5V (CN6 pin 5 or CN7 pin 18) is usable as output power supply for an Arduino
shield or an extension board, when the NUCLEO-G070RB or NUCLEO-G071RB board
is powered by USB, VIN or E5V. In this case the maximum current allowed is showed in
Table 7.
• 3.3V: on CN6 pin 4 or CN7 pin 16 is usable as power supply output. The current is
limited by the maximum current capability of the regulator U6 (LDL112PV33R from
STMicroelectronics). In this condition the maximum consumption of the STM32
NUCLEO-G070RB or NUCLEO-G071RB board and the connected shield must be less
than 500
mA.
6.6 Programming/debugging when the power supply is not from
ST-LINK
VIN or E5V is usable as an external power supply in case the current consumption of the
STM32 NUCLEO-G070RB or NUCLEO-G071RB board and its extension boards exceed
the allowed current on the USB. In such condition it is still possible to use the USB for
communication, programming or debugging only. In this case it is mandatory to power the
board first using VIN or E5V then to connect the USB cable to the PC. Proceeding this way
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