ST STM32G4 Nucleo-64 User Manual

Figure 9. STM32G4 Nucleo-64 board power tree
In case 5V_VIN, E5V, 5V_USB_CHGR, or 3V3 is used to power the STM32G4 Nucleo-64 board, this power
source must comply with the EN-60950-1: 2006+A11/2009 standard and must be Safety Extra Low Voltage
(SELV) with limited power capability.
If the power supply is 3V3, the ST-LINK is not powered and cannot be used.
Power supply input from STLINK-V3E USB connector (default setting)
The STM32G4 Nucleo-64 board and shield can be powered from STLINK-V3E connector CN1 (5 V) by placing a
jumper between pins 1-2 of JP5, “5V_SEL”, as illustrated in Figure 10. This is the default setting.
UM2505
Power supply
UM2505 - Rev 2
page 14/43

ST STM32G4 Nucleo-64 Specifications

General

Brand	ST
Model	STM32G4 Nucleo-64
Category	Motherboard
Language	English