Hardware layout and configuration
UM2408
18/45
UM2408 Rev 1
6.4
Power supply and power selection
The power supply can be provided by five different sources:
•
A host PC connected to CN1 through a USB cable (default setting)
•
An external 7-11 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
In case V
IN
, EXT, CHGR 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 or a 5 V USB charger on CN1, the ST-LINK is not powered
and cannot be used.
6.4.1
Power supply input from ST-LINK/V3 USB connector (default setting)
The STM32H7 Nucleo-144 board and shield can be powered from the ST-LINK USB
connector CN1 (U5V), by placing a jumper between the pins 1-2 of JP2 "STLK" (see
This is the default setting.
2
4
T_SWDIO
Target SWDIO using SWD protocol or Target JTMS (T_JTMS) using
JTAG protocol
3
5
GND
Ground
4
6
T_SWCLK
Target SWCLK using SWD protocol or Target JCLK (T_JCLK) using
JTAG protocol
5
7
GND
Ground
6
8
T_SWO
Target SWO using SWD protocol or Target JTDO (T_JTMS) using
JTAG protocol
7
9
T_JRCLK
Not used by SWD protocol, Target JRCLK (T_JRCLK) using JTAG
protocol, only for specific use
8
10
T_JTDI
Not used by SWD protocol, Target JTDI (T_JTDI) using JTAG protocol,
only for external tools
9
11
GNDDetect
GND detect for plug indicator, used on SWD and JTAG neither
10
12
T_NRST
Target NRST using SWD protocol or Target JTMS (T_JTMS) using
JTAG protocol
-
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 4. MIPI-10 debug connector (CN5) (continued)
MIPI-10
Pin
STDC14
Pin
CN5
Designation
