UM2407 Rev 2 19/50
UM2407 Hardware layout and configuration
49
6.4 Power supply
The power supply can be provided by five different sources:
• A host PC connected to CN1 through a USB cable (default setting)
• An external 7 V to 12 V power supply connected to CN8 pin 15 or CN11 pin 24
• An external 5 V power supply connected to CN11 pin 6
• An external 5 V USB charger (5V_USB_CHGR) connected to CN1
• An external 3.3 V power supply (3V3) connected to CN8 pin 7 or CN11 pin 16
The power supply is provided either by the host PC through the USB cable or by an external
source: V
IN
(7 V to 12 V), E5V (5 V), or +3.3 V power supply pins on CN8 or CN11. In case
V
IN
, E5V, or +3.3 V is used to power the Nucleo-144 board, this power source must comply
with the standard EN-60950-1: 2006+A11/2009 and must be Safety Extra Low Voltage
(SELV) with limited power capability.
In case the power supply is +3.3 V, the STLINK-V3E is not powered and cannot be used.
6.4.1 Power supply input from STLINK-V3E USB connector (default setting)
The STM32H7 Nucleo-144 board and shield can be powered from the STLINK-V3E USB
connector CN1 (5
V), by placing a jumper between the pins 1-2 of JP2 ‘STLINK’ (Refer to
Figure 10).
This is the default setting.
-13T_VCP_RX
Target RX used for VCP (must be UART dedicated to
bootloader)
-14T_VCP_TX
Target TX used for VCP (must be UART dedicated to
bootloader)
Table 5. MIPI-10 debug connector (CN5) (continued)
MIPI-10
Pin
STDC14
Pin
CN5 Designation
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