Hardware layout and configuration
UM2407
20/48
UM2407 Rev 1
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 ST-LINK is not powered and cannot be used.
6.4.1
Power supply input from STLINK-V3 USB connector (default setting)
The STM32H7 Nucleo-144 board and shield can be powered from the ST-LINK USB
connector CN1 (5 V), by placing a jumper between the pins 1-2 of JP2 "STLINK" (see
Figure 10
).
This is the default setting.
-
13
T_VCP_RX
Target RX used for VCP (must be UART dedicated to
bootloader)
-
14
T_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
