ST STM32H5 Nucleo-144 User manual

Introduction
The STM32H5 Nucleo-144 board based on the MB1404 reference board (order code NUCLEO-H563ZI) provides an affordable
and flexible way for users to try out new concepts and build prototypes, by choosing from the various combinations of
performance and power consumption features provided by the STM32H5 series microcontroller.
The ST Zio connector, which extends the ARDUINO® Uno V3 connectivity, and the ST morpho headers provide an easy
extension of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields.
The STM32H5 Nucleo-144 board does not require any separate probe as it integrates the STLINK-V3EC debugger/
programmer.
The STM32H5 Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available with the
STM32CubeH5 MCU Package.
Figure 1. NUCLEO-H563ZI top view Figure 2. NUCLEO-H563ZI bottom view
Pictures are not contractual.
STM32H5 Nucleo-144 board (MB1404)
UM3115
User manual
UM3115 - Rev 1 - February 2023
For further information contact your local STMicroelectronics sales office. www.st.com

1Features
•NUCLEO-H563ZI microcontroller based on the Arm® Cortex®-M33 core, featuring 2 Mbytes of flash
memory and 640 Kbytes of SRAM in an LQFP144 package
• Ethernet compliant with IEEE-802.3-2002
• USB Type-C® (sink only)
• Three user LEDs
• Reset and user push-buttons
• 32.768 kHz LSE crystal oscillator
• Board connectors:
–USB Type-C®
–ST Zio connector including ARDUINO® Uno V3 expansion connector
– ST morpho extension pin headers for full access to all STM32 I/Os
• Flexible power-supply options: ST-LINK USB VBUS, USB connector, or external sources
• On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual
COM port, and debug port
• Comprehensive free software libraries and examples available with the STM32CubeH5 MCU Package
• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded
Workbench®, MDK-ARM, and STM32CubeIDE
Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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Features
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2Ordering information
To order the STM32H5 Nucleo-144 board, refer to Table 1. Additional information is available from the datasheet
and reference manual of the target STM32.
Table 1. Ordering information
Order code Board reference Target STM32
NUCLEO-H563ZI MB1404 STM32H563ZIT6
2.1 Products and codification
The meaning of the codification is explained in Table 1.
Table 2. Codification explanation
NUCLEO-XXYYZT Description Example: NUCLEO-H563ZI
XX MCU series in STM32 32‑bit Arm Cortex MCUs STM32H5 series
YY MCU product line in the series STM32H563/573
Z STM32 package pin count 144 pins
TSTM32 flash memory size:
• I for 2 Mbytes 2 Mbytes
In this document, for any information that is common to all sales types, the references are noted as the STM32H5
Nucleo-144 board.
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Ordering information
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3Development environment
3.1 System requirements
• Multi‑OS support: Windows® 10, Linux® 64-bit, or macOS®
• USB Type-A or USB Type-C® to USB Type-C® cable
Note: macOS® is a trademark of Apple Inc., registered in the U.S. and other countries and regions.
Linux® is a registered trademark of Linus Torvalds.
Windows is a trademark of the Microsoft group of companies.
3.2 Development toolchains
•IAR Systems® - IAR Embedded Workbench®(1)
•Keil® - MDK-ARM(1)
• STMicroelectronics - STM32CubeIDE
1. On Windows® only.
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Development environment
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4Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
Convention Definition
Jumper JPx ON Jumper fitted
Jumper JPx OFF Jumper not fitted
Jumper JPx [1-2] Jumper fitted between Pin 1 and Pin 2
Solder bridge SBx ON SBx connections closed by 0 Ω resistor
Solder bridge SBx OFF SBx connections left open
Resistor Rx ON Resistor soldered
Resistor Rx OFF Resistor not soldered
Capacitor Cx ON Capacitor soldered
Capacitor Cx OFF Capacitor not soldered
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Conventions
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5Quick start
The STM32H5 Nucleo-144 board is a low-cost and easy-to-use development kit, to evaluate and start
development quickly with an STM32H5 series microcontroller in an LQFP 144-pin package.
Before installing and using the product, accept the Evaluation Product License Agreement from the www.st.com/
epla webpage. For more information on the STM32H5 Nucleo-144 board and demonstration software, visit the
www.st.com/stm32nucleo webpage.
5.1 Getting started
Follow the sequence below to configure the STM32H5 Nucleo-144 board and launch the demonstration
application (refer to Figure 4 and Figure 5 for component location):
1. Check the jumper position on the board as described in Table 4.
Table 4. Default jumper configuration
Jumper Definition Position Comment
JP1 External debug OFF -
JP2 Power source selection [1-2] STLK (5V_STLK from ST-LINK)
JP3 STLK_RST OFF -
JP4 VDD_MCU power selection [1-2] (default) VDD_MCU supplied with 3V3_VDD
[2-3] (optional) VDD_MCU supplied with 1V8_VDD
JP5 IDD measurement ON MCU current measurement
JP6 Ethernet transmit data1 ON RMII_TXD1
2. For the correct identification of the device interfaces from the host PC and before connecting the board,
install the Nucleo USB driver available on the www.st.com/stm32nucleo website.
3. Power the board by connecting the STM32H5 Nucleo-144 board to a PC with a USB Type-A or USB Type-
C® cable through the USB connector (CN1). As a result, the PWR green LED (LD5), the COM LED (LD4),
and the PWR LED (LD6) light up, while the three user LEDs (LD1 to LD3) blink.
4. Press the user blue button (B1).
5. Observe how the blinking frequency of the three LEDs (LD1 to LD3) changes, according to the clicks on
the user button (B1).
6. The software demonstration and the several software examples that allow the user to exercise the Nucleo
features, are available at the www.st.com website.
7. Develop your application using the available examples.
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Quick start
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6Hardware layout and configuration
The STM32H5 Nucleo-144 board is designed around an STM32H5 series microcontroller in a 144-pin LQFP
package.
Figure 3 shows the connections between the STM32H5 and its peripherals (STLINK-V3EC, push-buttons, LEDs,
USB, Ethernet, ST Zio connectors, and ST morpho headers).
Figure 4 and Figure 5 show the location of these features on the STM32H5 Nucleo-144 board.
The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
DT59060V1
Embedded
STLINK-V3EC
STM32
microcontroller
ST morpho extension header ST morpho extension header
I/O
VCP
UART
Reset
button
(B2)
User
button
(B1)
I/O
Zio connector
ST-LINK part
MCU part
LED1
LED2
LED3
USB Type-C®
connector
Zio connector
RJ45
connector
USB Type-C®
connector
SWD
SWD VCP
UART
USB RMII
Note: VCP: Virtual COM port
SWD: Serial Wire Debug
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Hardware layout and configuration
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6.1 STM32H5 Nucleo-144 board layout
Figure 4. STM32H5 Nucleo-144 board top layout
DT59061V1
ST-LINK RST (JP3)
User USB connector (CN13)
ST-LINK USB Type-C® connector (CN1)
ST-LINK COM LED (LD4)
ST-LINK power status LED (LD6)
Power LED (LD5) (green)
Power source selection (JP2)
ZIO connector (CN7)
ST morpho pin header (CN12)
ZIO connector (CN10)
Reset button (B2)
Ethernet RJ45 connector
(CN14)
User button (B1)
USB VBUS LED (LD7)
ZIO connector (CN9)
ST morpho pin header (CN11)
STM32 microcontroller (U14)
ZIO connector (CN8)
VDD_MCU power selection (JP4)
IDD measurement (JP5)
External debug (JP1)
User LEDs (LD1-LD3)
MIPI20 connector (CN5)
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STM32H5 Nucleo-144 board layout
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Figure 5. STM32H5 Nucleo-144 board bottom layout
DT59062V1
IOREF power
selection
(SB16, SB25)
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STM32H5 Nucleo-144 board layout
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6.2 Mechanical drawing
Figure 6. STM32H5 Nucleo-144 board mechanical drawing (in millimeters)
DT59087V1
133.34 mm
70.00 mm
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Mechanical drawing
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7Embedded STLINK-V3EC
The chapter below gives some information about the implementation of STLINK-V3EC.
For more details on STLINK-V3EC such as LEDs management, drivers, and firmware, refer to the technical note
Overview of ST-LINK derivatives (TN1235).
For information about debugging and programming features of STLINK-V3EC, refer to the user manual STLINK-
V3SET debugger/programmer for STM8 and STM32 (UM2448).
Description
There are two different ways to program and debug the onboard STM32 MCU.
• Using the embedded STLINK-V3EC programming and debugging tool on the NUCLEO-H563ZI board.
• Using an external debug tool connected to the CN5 MIPI20 connector (SWD/JTAG/TRACE)
The STLINK-V3EC facility for debugging and flashing is integrated into the STM32H5 Nucleo-144 board.
Supported features in STLINK-V3EC:
•5 V/500 mA power supply capability through the USB Type-C® connector (CN1)
• USB 2.0 high-speed-compatible interface
• JTAG and Serial Wire Debug (SWD) with Serial Wire Viewer (SWV)
• Virtual COM port (VCP)
• 1.7 to 3.6 V application voltage
• COM status LED, which blinks during communication with the PC
• Power status LED giving information about STLINK-V3EC target power.
• Overvoltage protection (U2) with current limitation
Two tricolor LEDs (green, orange, and red) provide information about STLINK-V3EC communication status (LD4)
and STLINK-V3EC power status (LD6).
For detailed information about the management of these LEDs, refer to the technical note Overview of ST-LINK
derivatives (TN1235).
Drivers
The installation of drivers is not mandatory from Windows 10® but allocates an ST-specific name to the ST-LINK
COM port in the system device manager.
For detailed information on the ST-LINK USB drivers, refer to the technical note Overview of ST-LINK derivatives
(TN1235).
STLINK-V3EC firmware upgrade
STLINK-V3EC embeds a firmware upgrade (stsw-link007) mechanism through the USB-C port. As the firmware
might evolve during the lifetime of the STLINK-V3EC product (for example to add new functionalities, fix bugs,
and support new microcontroller families), it is recommended to keep the STLINK-V3EC firmware up to date
before starting to use the NUCLEO-H563ZI board. The latest version of this firmware is available from the
www.st.com website.
For detailed information about firmware upgrades, refer to the technical note Overview of ST-LINK derivatives
(TN1235).
Using an external debug tool to program and debug the on-board STM32
Before connecting any external debug tool to the MIPI20 debug connector (CN5), the SWD and VCP signals from
STLINK-V3EC must be isolated. For this, fit the jumper on JP1. It disables the U1 level shifter and isolates SWD
and VCP signals from STLINK-V3EC. The configuration of the JP1 is explained in Table 5.
Once the jumper is fitted on JP1, an external debug tool can be connected to the MIPI20 debug connector (CN5).
The two level shifters U1 and U10 allow compatibility between the target MCU signals (1V8 or 3V3) and the
STLINK-V3EC signals (3V3). They are used on VCP and SWD interfaces to offer a debug capability when
operating the target MCU at 1V8.
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Embedded STLINK-V3EC
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Table 5 below explains the JP1 jumper setting.
Table 5. JP1 configuration
Jumper Definition Setting Comment
JP1 Debugger selection
ON [1-2]
An external debugger connected to
the MIPI20 connector (CN5) can be
used. The level shifter (U1) is in high
impedance (HZ).
STLINK-V3EC no longer drives the
embedded STM32
OFF The embedded STLINK-V3EC is
selected (default configuration).
Note: The MIPI20 TRACE connector supports 1V8 or 3V3 for target reference voltage. When using the external debug
connector (CN5), STLINK-V3EC can be used to supply the board through the CN1 USB Type-C® connector.
Otherwise, another power supply source can be used as described in Section 8 Power supply.
Figure 7. Connecting an external debug tool to program the on-board STM32
DT59063V1
5V power supply selection
(JP2)
STLINK-V3EC USB connector
(CN1)
MIPI20 connector
(SWD/JTAG/TRACE)
(CN5)
External debugger selection
(JP1)
Table 6. MIPI20 debug connector (CN5) pinout
MIPI20
pin CN5 Designation
1 VTref Target reference voltage (fed from VDD)
2 SWDIO/JTMS Target SWDIO using SWD protocol or target JTMS using JTAG protocol
3 GND Ground
4 SWCLK/JCLK Target SWCLK using SWD protocol or target JCLK using JTAG protocol
5 GND Ground
6 JTDO/SWO Target SWO using SWD protocol or target JTDO using JTAG protocol
7 KEY Not connected
8 JTDI Not used by SWD protocol, target JTDI (T_JTDI) using JTAG protocol, only for external
tools
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Embedded STLINK-V3EC
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MIPI20
pin CN5 Designation
9 GND Ground
10 NRST Target NRST using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
11 TgtPwr 5 V target power to the target MCU–To be disconnected (SB84 OFF)
12 TRACECLK Trace clock
13 TgtPwr 5 V target power to the target MCU–To be disconnected (SB84 OFF)
14 TRACED0 Trace Data0
15 GND Ground
16 TRACED1 Trace Data1
17 GND Ground
18 TRACED2 Trace Data2
19 GND Ground
20 TRACED3 Trace Data3
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Embedded STLINK-V3EC
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8Power supply
Six different sources can provide the power supply to NUCLEO-H563ZI:
• A host PC connected to CN1 through a USB cable (default configuration)
• An external 7 to 12 V power supply connected to CN8 pin 15 or CN11 pin 24 (VIN)
• An external 5 V power supply connected to CN11 pin 6 (5V_EXT)
• An external 5 V USB charger (VBUS_STLK) connected to CN1
• A host PC connected to CN13 through a USB cable
• An external 3.3 V power supply (3V3) connected to CN8 pin 7 or CN11 pin 16
In case VIN, 5V_EXT, or 3V3 is used to power the STM32H5 Nucleo-144 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.
In case the power supply is +3.3 V, STLINK-V3EC is not powered and cannot be used.
8.1 Power supply input from STLINK-V3EC USB connector: 5V_STLK (default
configuration)
The 5 V signal on the STLINK-V3EC USB connector (CN1) can power the STM32H5 Nucleo-144 board and its
shield. To select the 5V_STLK power source, JP2 must be set on [1-2] ‘STLK’ (refer to Figure 8).
This is the default configuration.
Figure 8. Power supply input from STLINK-V3EC USB connector with PC (5 V, 500 mA maximum)
DT59064V1
PC
5V
5V
3V3
If the USB enumeration succeeds, the ST-LINK power is enabled, by asserting the T_PWR_EN signal from
STLINK-V3EC. This pin is connected to a power switch STMPS2151STR (U2), which powers the board. The
power switch STMPS2151STR (U2) features also a current limitation to protect the PC in case of a short circuit
onboard. If an overcurrent (more than 500 mA) happens onboard, the POWER LED STATUS (LD6) is lit in red
color.
The STLINK-V3EC USB connector (CN1) can power the Nucleo board with its shield.
• If the host can provide the required power, the power switch STMPS2151STR and the green LED (LD5)
are turned ON. Thus, the Nucleo board and its shield can consume up to 500 mA current, but no more.
• If the host is not able to provide the requested current, the enumeration fails.
Therefore, the STMPS2151STR power switch (U2) remains OFF and the MCU part including the extension board
is not powered. As a consequence, the green LED (LD5) remains turned OFF. In this case, it is mandatory to use
an external power supply.
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Power supply
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Warning: In case the maximum current consumption of the STM32H5 Nucleo-144 board and its shield
boards exceed 500 mA, it is mandatory to power the STM32H5 Nucleo-144 board, using an
external power supply connected to 5V_EXT, VIN, or 3V3.
8.2 External power supply input from VIN (7 to 12 V, 800 mA maximum)
When the STM32H5 Nucleo-144 board is power supplied by VIN (refer to Table 7 and Figure 9, the JP2 jumper
must be fitted on [3-4] (VIN 5V).
The STM32H5 Nucleo-144 board and its shield boards can be powered in three different ways from the VIN
external power supply, depending on the used voltage. The three power sources are summarized in Table 7.
Table 7. External power sources VIN (7 to 12 V)
Input
power
name
Connector pins Voltage Maximum
current Limitation
VIN CN8 pin 15
CN11 pin 24 7 to 12 V 800 mA
From 7 to 12 V only and input current capability is
linked to input voltage:
• 800 mA input current when VIN = 7 V
• 450 mA input current when 7 V < VIN < 9 V
• 250 mA input current when 9 V < VIN < 12 V
Figure 9. Power supply input from VIN (7 to 12 V, 800 mA maximum)
DT59065V1
5V
3V3
VIN < 12V
8.3 External power supply input 5V_EXT (5 V, 1.3 A maximum)
When the STM32H5 Nucleo-144 board is power supplied by 5V_EXT (refer to Figure 10 and Table 8, the JP2
jumper must be fitted on [5-6] (E5V).
Table 8. Power supply input from 5V_EXT (5 V, 1.3 A)
Input power
name Connector pins Voltage Maximum current
5V_EXT CN11 pin 6 4.75 to 5.25 V 1.3 A
Note: Refer to Using an external debug tool to program and debug the on-board STM32 about debugging when using
an external power supply.
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External power supply input from VIN (7 to 12 V, 800 mA maximum)
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Figure 10. Power supply input from 5V_EXT (5 V, 1.3 A maximum)
DT59066V1
5V_EXT
5V
3V3
8.4 External power supply input from a USB charger (5 V)
When the STM32H5 Nucleo-144 board is power supplied by a USB charger on CN1 (refer to Figure 11 and
Table 9), the JP2 jumper must be set on [7-8] (CHGR).
Table 9. External power source CHGR (5 V)
Input power
name Connector pins Voltage Maximum current
CHGR CN1 5 V -
Figure 11. Power supply input from STLINK-V3EC USB connector with a USB charger (5 V)
DT59067V1
USB charger or PC
5V
5V
3V3
No
debug
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External power supply input from a USB charger (5 V)
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8.5 External power supply input from the USB user connector (5 V, 3 A maximum)
The STM32H5 Nucleo-144 board and shield can be powered from the USB user connector (CN13). To select the
USB user power source, JP2 must be fitted on [9-10] 'USB USER' (refer to Figure 12 and Table 10).
Table 10. External power source USB user (5 V, 3 A)
Input power
name Connector pins Voltage Maximum current
USB USER CN13 5 V 3 A
Figure 12. Power supply input from USB user connector (5 V, 3 A)
DT59088V1
5V
5V
Host PC
3V3
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External power supply input from the USB user connector (5 V, 3 A maximum)
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8.6 External power supply input 3V3_EXT (3.3 V, 1.3 A maximum)
In some cases, it might be interesting to use the 3V3 provided by a shield board (CN8 pin 7 or CN11 pin 16)
directly as power input (refer to Figure 13 and Table 11). In this case, note that programming and debugging
features are unavailable as STLINK-V3EC is not powered.
Table 11. External power source 3V3_EXT (3.3 V, 1.3 A maximum)
Input power
name Connector pins Voltage range Maximum current
3V3 CN8 pin 7
CN11 pin 16 3.0 to 3.6 V 1.3 A
Figure 13. Power supply input from 3V3_EXT (3.3 V)
DT59068V1
3V3_EXT
No
jumper
3V3
8.7 Debugging/programming when not using an external power supply
When powered by VIN (VIN 5 V) or 5V_EXT (E5V), it is still possible to use STLINK-V3EC for programming or
debugging only. In this case, it is mandatory to power the board first using VIN 5 V or E5V, then connect the USB
cable from CN1 to the PC. In this way, the enumeration succeeds, thanks to the external power source.
The following power-sequence procedure must be respected:
1. Configure the jumper JP2 [5-6] for E5V or [3-4] for VIN 5V.
2. Connect the external power source to VIN 5 V or E5V.
3. Power on the external power supply 7 V < VIN < 12 V to VIN 5 V, or 5 V for E5V.
4. Check that the green LED (LD5) is turned ON.
5. Connect the PC to the USB connector (CN1).
If this order is not respected, the following risks might be encountered:
1. If the board needs more than 300 mA current, the PC might be damaged, or the PC can limit the supplied
current. As a consequence, the board is not powered correctly.
2. If 300 mA is requested during enumeration, there is a risk that the request is rejected and the enumeration
does not succeed if the PC cannot provide such current. Consequently, the board is not power supplied.
The green LED (LD5) remains OFF.
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External power supply input 3V3_EXT (3.3 V, 1.3 A maximum)
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9Clock sources
9.1 HSE clock (high‑speed external clock)
There are four ways to configure the pins corresponding to the high‑speed external clock (HSE):
• MCO from STLINK-V3EC (default): The MCO output of ST-LINK is used as an input clock of the STM32H5.
The MCO clock frequency cannot be changed. it is fixed at 8 MHz and connected to the PF0/PH0‑OSC_IN
of the STM32H5 series microcontroller. The configuration must be:
– SB49 ON
– SB48 and SB50 OFF
– SB3 and SB4 OFF
• HSE on-board oscillator from X3 crystal (provided): For typical frequencies and its capacitors and resistors,
refer to the STM32H5 series microcontroller datasheet and the application note Oscillator design guide for
STM8AF/AL/S, STM32 MCUs and MPUs (AN2867) for the oscillator design guide. The X3 crystal has the
following characteristics: 25 MHz, 6 pF, and 20 ppm. ST recommends using NX2016SA-25MHz-EXS00A-
CS11321 manufactured by NDK. The configuration must be:
– SB3 and SB4 ON
– C69 and C70 ON with 5.6 pF capacitors
– SB48 and SB50 OFF
– SB49 OFF
• Oscillator from external PF0/PH0: From an external oscillator through pin 29 of the CN11 connector. The
configuration must be:
– SB50 ON
– SB48 and SB49 OFF
– SB3 and SB4 OFF
• HSE not used: PF0/PH0 and PF1/PH1 are used as GPIOs instead of clocks. The configuration must be:
– SB48 and SB50 ON
– SB49 OFF
– SB3 and SB4 OFF
9.2 LSE clock (low‑speed external clock): 32.768 kHz
There are three ways to configure the pins corresponding to the low-speed clock (LSE):
• On-board oscillator (default): X2 crystal. Refer to the application note Oscillator design guide for
STM8AF/AL/S, STM32 MCUs and MPUs (AN2867) for oscillator design guide for STM32H5 series
microcontrollers. ST recommends using NX3215SA-32.768kHZ-EXS00A-MU00525 (32.768 kHz, 9 pf load
capacitance, 20ppm) from NDK. The configuration must be:
– SB44 and SB45 OFF
– R34 and R35 ON
• Oscillator from external PC14: From an external oscillator through pin 25 of the CN11 connector. The
configuration must be:
– SB45 ON
– SB44 OFF
– R34 and R35 OFF
• LSE not used: PC14 and PC15 are used as GPIOs instead of the low-speed clock.
The configuration must be:
– SB44 and SB45 ON
– R34and R35 OFF
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Clock sources
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10 Board functions
10.1 LEDs
User green LED (LD1)
The user green LED (LD1) is connected to the PB0 STM32 I/O (SB43 ON and SB51 OFF) or PA5 (SB51 ON and
SB43 OFF) corresponding to the D13 ST Zio.
User yellow LED (LD2)
The user yellow LED (LD2) is connected to PF4.
User red LED (LD3)
The user red LED (LD3) is connected to PG4.
These user LEDs are ON when the I/O is in the HIGH state, and are OFF when the I/O is in the LOW state.
COM LED (LD4)
The tri-color (green, orange, and red) LED (LD4) provides information about the ST-LINK communication status.
LD4 default color is red. LD4 turns to green to indicate that communication is in progress between the PC and
STLINK-V3EC, with the following setup:
• Slow blinking red/OFF at power-on before USB initialization
• Fast blinking red/OFF after the first correct communication between PC and STLINK-V3EC (enumeration)
• Red LED ON when the initialization between the PC and STLINK-V3EC is complete
• Green LED ON after a successful target communication initialization
• Blinking red/green during communication with the target
• Green ON communication finished and successful
• Orange ON communication failure
Green PWR LED (LD5)
The green LED (LD5) indicates that the +5 V power supply is available on the STM32H5 Nucleo-144. This source
is available on CN8 pin 9 and CN11 pin 18.
STLINK POWER STATUS LD6
The tricolor LED (LD6) provides information about the STLINK-V3EC target power.
USB Type-C® green LED (LD7)
The green LED (LD7) indicates the VBUS presence on the user USB Type-C® connector (CN13).
10.2 Push-buttons
Blue user button (B1)
The user button is connected to the PC13 I/O by default (tamper support: SB54 ON and SB59 OFF) or PA0
(Wakeup support: SB59 ON and SB54 OFF) of the STM32H5 series microcontroller
Black reset button (B2)
This push-button is connected to NRST and is used to reset the STM32H5 series microcontroller.
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Board functions
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