STMicroelectronics STM32H7 Nucleo-144 User manual

March 2019 UM2407 Rev 1 1/48
1
UM2407
User manual
STM32H7 Nucleo-144 boards (MB1364)
Introduction
The STM32H7 Nucleo-144 boards based on the MB1364 reference board (NUCLEO-
H743ZI, NUCLEO-H753ZI) provide 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 STM32H7 Series microcontroller. The ST
Zio connector, which extends the Arduino™ Uno V3 connectivity, and the ST morpho
headers provide an easy means of expanding the functionality of the Nucleo open
development platform with a wide choice of specialized shields. The STM32H7 Nucleo-144
boards do not require any separate probe as they integrate the STLINK-V3
debugger/programmer. The STM32H7 Nucleo-144 boards come with the comprehensive
free software libraries and examples available with the STM32Cube MCU Package.
Pictures are not contractual.
Figure 1. Nucleo-144 board (top view) Figure 2. Nucleo-144 board (bottom view)
www.st.com

Contents UM2407
2/48 UM2407 Rev 1
Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1 Nucleo-144 board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 Mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.3 Embedded STLINK-V3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3.2 STLINK-V3 firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3.3 Using an external debug tool to program and debug the on-boards
STM32H7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4.1 Power supply input from STLINK-V3 USB connector (default setting) . 20
6.4.2 External power supply input from VIN (7 V to 12 V, 800 mA max) . . . . 21
6.4.3 External power supply input 5V_EXT (5 V, 500 mA max) . . . . . . . . . . . 22
6.4.4 External power supply input from USB CHARGER (5 V) . . . . . . . . . . . 23
6.4.5 External power supply input from 3V3_EXT (3.3 V) . . . . . . . . . . . . . . . 23
6.4.6 Debugging while using VIN or EXT as an external power supply . . . . . 24
6.5 Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.5.1 HSE clock (high speed external clock) . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.5.2 LSE clock (low-speed external clock) - 32.768 kHz . . . . . . . . . . . . . . . . 25

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6.6 Board functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.6.1 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.6.2 Push-buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.6.3 MCU voltage selection: 1V8/3V3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.6.4 Current consumption measurement (IDD) . . . . . . . . . . . . . . . . . . . . . . . 27
6.6.5 Virtual COM port (VCP): LPUART/USART . . . . . . . . . . . . . . . . . . . . . . 27
6.6.6 USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.6.7 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.7 Solder bridges and jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.1 STLINK-V3 USB Micro-B connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . 34
7.2 USB OTG FS connector CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.3 Ethernet RJ45 connector CN14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Extension connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.1 ST Zio connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2 ST morpho connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Appendix A Federal Communications Commission (FCC)
and Industry Canada (IC) Compliance . . . . . . . . . . . . . . . . . . . . . . . 44
A.1 FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.1.1 Part 15.19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.1.2 Part 15.105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.1.3 Part 15.21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.2 IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.2.1 Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.2.2 Déclaration de conformité. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Appendix B CISPR32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
B.1 Warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

List of tables UM2407
4/48 UM2407 Rev 1
List of tables
Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. ON/OFF conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 4. Jumper configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 5. MIPI-10 debug connector (CN5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6. External power sources: VIN (7 V to 12 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 7. External power sources: 5V_EXT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 8. External power sources: CHGR (5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 9. External power sources: 3V3_EXT (3.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 10. USART3 connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 11. LPUART1 connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 12. USB pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 13. Ethernet pin configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 14. Solder bridge and jumper configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 15. USB Micro-B connector pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 16. USB OTG FS Micro-AB connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 17. Ethernet connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 18. CN7 ZIO included Arduino™ connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 19. CN8 ZIO included Arduino™ connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 20. CN9 ZIO included Arduino™ connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 21. CN10 ZIO included Arduino™ connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 22. ST morpho connector pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 23. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

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UM2407 List of figures
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List of figures
Figure 1. Nucleo-144 board (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Nucleo-144 board (bottom view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 3. Hardware block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4. Nucleo-144 board top layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5. Nucleo-144 bottom layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6. Nucleo-144 board mechanical drawing in millimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 7. Nucleo-144 board mechanical drawing in mil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. USB composite device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 9. Connecting an external debug tool to program the on-board STM32H7 . . . . . . . . . . . . . . 19
Figure 10. Power supply input from ST-LINK USB connector with PC (5 V, 500 mA max). . . . . . . . . 21
Figure 11. Power supply input from VIN (7 V to 12 V, 800 mA max). . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12. Power supply input from 5V_EXT (5 V, 500 mA max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 13. Power supply input from ST-LINK USB connector with USB charger (5 V) . . . . . . . . . . . . 23
Figure 14. Power supply input from 3V3_EXT (3.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 15. USB Micro-B connector CN1 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 16. USB OTG FS Micro-AB connector CN13 (front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 17. Ethernet RJ45 connector CN14 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 18. NUCLEO-H743ZI2 and NUCLEO-H753ZI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Features UM2407
6/48 UM2407 Rev 1
1 Features
The STM32H7 Nucleo-144 boards offer the following features:
•STM32H7 Arm®(a) Cortex®core-based microcontroller in LQFP144 package
•Ethernet compliant with IEEE-802.3-2002 (depending on STM32H7 support)
•USB OTG full-speed
•3 user LEDs
•2 push-buttons: USER and RESET
•LSE crystal:
– 32.768 kHz crystal oscillator
•Board connectors:
– USB with Micro-AB
– Ethernet RJ45
–MIPI10
•Board expansion connectors:
– ST Zio including Arduino™Uno V3
–STmorpho
•Flexible power-supply options: ST-LINK USB VBUS or external sources
•On-board STLINK-V3 debugger/programmer with SWD connector:
– USB re-enumeration capability: virtual COM port, mass storage, debug port
– STLINK-V3 standalone kit capability
•Comprehensive free software libraries and examples available with the STM32Cube
package
•Supported by wide choice of integrated development environments (IDEs) including
IAR™, Keil®and GCC-based IDEs
a. Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

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UM2407 Ordering information
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2 Ordering information
To order the Nucleo-144 board corresponding to the targeted STM32, use the order code
given below in Table 1:
2.1 Product marking
Evaluation tools marked as “ES” or “E” are not yet qualified and therefore not ready to be
used as reference design or in production. Any consequences deriving from such usage will
not be at ST charge. In no event, ST will be liable for any customer usage of these
engineering sample tools as reference design or in production.
“E” or “ES” marking examples of location:
•On the targeted STM32H7 that is soldered on the board (for illustration of STM32H7
marking, refer to the STM32H7 datasheet “Package information” paragraph at the
www.st.com website).
•Next to the evaluation tool ordering part number that is stuck or silk-screen printed on
the board.
These boards feature a specific STM32H7 device version which allows the operation of any
stack or library. This STM32H7 device shows a "U" marking option at the end of the
standard part number and is not available for sales.
2.2 Codification
The meaning of the codification is explained in Table 2.
Table 1. Ordering information
Order code Board reference Target STM32H7 Differentiating feature
NUCLEO-H743ZI
MB1364
STM32H743ZIT6U
– Ethernet
– USB OTG FS on
Micro.AB connector
–ST-LINK/V2-1
NUCLEO-H753ZI STM32H753ZIT6U
– Ethernet
– USB OTG FS on
Micro.AB connector
– STLINK-V3E
– Cryptography
Table 2. Codification explanation
NUCLEO-XXYYZTN Description Example: NUCLEO-H743ZI2
XX MCU series in STM32 Arm Cortex MCUs STM32H7 Series
YY MCU Product line in the series STM32H743
Z STM32 package pin count 144 pins

Ordering information UM2407
8/48 UM2407 Rev 1
This order code is mentioned on a sticker placed on top side of the board.
TSTM32H7 Flash memory size:
-I for 2 Mbytes 2 Mbytes
N
Board version:
-void = ST-LINK/V2-1
-2 = STLINK-V3E
STLINK-V3E
Table 2. Codification explanation
NUCLEO-XXYYZTN Description Example: NUCLEO-H743ZI2

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UM2407 Development environment
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3 Development environment
3.1 Development toolchains
•Keil®MDK-ARM(a)
•IAR™EWARM(a)
•GCC-based IDEs
3.2 System requirements
•Windows®OS (7, 8 and 10), Linux®or macOS®(b)
•USB Type-A to Micro-B cable
3.3 Demonstration software
The demonstration software, included in the STM32Cube package, is preloaded in the
STM32H7 Flash memory for easy demonstration of the device peripherals in standalone
mode. The latest versions of the demonstration source code and associated documentation
can be downloaded from the www.st.com/stm32nucleo web page.
a. On Windows only.
b. macOS is a trademark of Apple Inc., registered in the U.S. and other countries.

Conventions UM2407
10/48 UM2407 Rev 1
4 Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present
document.
In this document, for any information that is common to all sales types, the references are
noted “STM32H7 Nucleo-144 board” and “STM32H7 Nucleo-144 boards”.
Table 3. ON/OFF conventions
Convention Definition
Jumper JPx ON Jumper fitted
Jumper JPx OFF Jumper not fitted
Solder bridge SBx ON SBx connections closed by solder or 0 ohm resistor
Solder bridge SBx OFF SBx connections left open

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UM2407 Quick start
47
5 Quick start
The STM32H7 Nucleo-144 board is a low-cost and easy-to-use development kit, used to
evaluate and start a development quickly with an STM32H7 Series microcontroller in
LQFP144 package.
Before installing and using the product, accept the Evaluation Product License Agreement
from the www.st.com/epla web page. For more information on the STM32H7 Nucleo-144
and for demonstration software, visit the www.st.com/stm32nucleo web page.
5.1 Getting started
Follow the sequence below to configure the Nucleo-144 board and launch the
demonstration application (for components location refer to Figure 4):
1. Check jumper position on the board:
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. To power the board connect the STM32H7 Nucleo-144 board to a PC with a USB cable
‘Type-A to Micro-B’ through the USB connector CN1 on the ST-LINK. As a result, the
green LED LD6 (PWR) and LD4 (COM) light up and the red LED LD3 blinks.
4. Press button B1 (left button).
5. Observe the blinking frequency of the three LEDs LD1 to LD3 changes, by clicking on
the button B1.
6. The software demonstration and the several software examples, that allow the user to
use the Nucleo features, are available at the www.st.com/stm32nucleo web page.
7. Develop an application, using the available examples.
Table 4. Jumper configuration
Jumper Definition Position Comment
JP1 STLK_RST OFF -
JP3 T_NRST ON -
JP5 VDD_MCU power selection ON [1-2] (default) VDD_MCU supplied with 3V3_VDD
ON [2-3] (optional) VDD_MCU supplied with 1V8_VDD
JP4 IDD measurement ON MCU current measurement
JP2 Power source selection ON [1-2] 5V_USB_STLK (from ST-LINK)

Hardware layout and configuration UM2407
12/48 UM2407 Rev 1
6 Hardware layout and configuration
The STM32H7 Nucleo-144 board is designed around the STM32H7 Series microcontrollers
in a 144-pin LQFP package.
Figure 3 shows the connections between the STM32H7 and its peripherals (STLINK-V3,
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 STM32H7 Nucleo-144
board.
The mechanical dimensions of the board are showed in Figure 6 and Figure 7.
Figure 3. Hardware block diagram
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UM2407 Rev 1 13/48
UM2407 Hardware layout and configuration
47
6.1 Nucleo-144 board layout
Figure 4. Nucleo-144 board top layout
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Figure 5. Nucleo-144 bottom layout
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47
6.2 Mechanical drawing
Figure 6. Nucleo-144 board mechanical drawing in millimeter

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Figure 7. Nucleo-144 board mechanical drawing in mil

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47
6.3 Embedded STLINK-V3
There are two different ways to program or debug the on-board STM32H7 MCU:
•Using the embedded STLINK-V3
•Using an external debug tool connected to CN5 MIPI-10 connector.
The STLINK-V3 programming and debugging tool is integrated in the STM32H7
Nucleo-144 board.
The STLINK-V3 makes the STM32H7 Nucleo-144 board Mbed enabled.
The embedded STLINK-V3 supports only SWD and VCP for STM32H7 devices. For
information about debugging and programming features refer to Overview of ST-LINK
derivatives, Technical note (TN1235), which describes in details all the STLINK/V3 features.
Features supported on STLINK-V3STLINK-V3:
•5 V power supplied by USB connector (CN1)
•USB 2.0 high-speed-compatible interface
•JTAG/serial wire debugging (SWD) specific features:
– 3 V to 3.6 V application voltage on the JTAG/SWD interface and 5V tolerant inputs
–JTAG
– SWD and serial viewer (SWV) communication
•Direct firmware update feature (DFU) (CN2)
•STDC14 (MIPI10) compatible connector (CN5)
•Status COM LED (LD4) which blinks during communication with the PC
•Fault red LED (LD6) alerting on USB overcurrent request
•5 V/300 mA output power supply capability (U2) with current limitation and LED
•Green LED ON: 5V enabled (LD5)
6.3.1 Drivers
Before connecting the Nucleo-144 board to a Windows 7, Windows 8 or Windows XP PC
via USB, a driver for STLINK-V3 must be installed (not require for Windows 10). The driver
is automatically installed by the toolset supporting ST-LINK. It is also available from the
www.st.com website.
In case the STM32H7 Nucleo-144 board is connected to the PC before installing the driver,
the PC device manager may report some Nucleo interfaces as “Unknown”.
To recover from this situation, after installing the dedicated driver, the association of
“Unknown” USB devices found on the STM32H7 Nucleo-144 board to this dedicated driver,
must be updated in the device manager manually.
Note: It is recommended to proceed using USB composite device, as shown in Figure 8.

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Figure 8. USB composite device
Note: 37xx = 374E for STLINK-V3 without bridges functions
374F for STLINK-V3 with bridges functions
6.3.2 STLINK-V3 firmware upgrade
The STLINK-V3 embeds a firmware upgrade mechanism for in-situ upgrade through the
USB port. As the firmware may evolve during the lifetime of the STLINK-V3 product (for
example new functionalities, bug fixes, support for new microcontroller families), it is
recommended to keep the STLINK-V3 firmware up to date before starting to use the
STM32H7 Nucleo-144 board. The latest version of this firmware is available from the
www.st.com website.
6.3.3 Using an external debug tool to program and debug the on-boards
STM32H7
There are two basic ways to support an external debug tool:
1. Keep the embedded STLINK-V3 running.
Power on the STLINK-V3 at first until the COM LED lights RED. Then connect your
external debug tool through CN5 MIPI-10 debug connector.
2. Set the embedded STLINK-V3 in high impedance state:
When you state the jumper JP1 (STLK_RST) ON, the embedded STLINK-V3 is in
RESET state and all GPIOs are in high impedance, then you can connect your external
Debug tool on the debug connector CN5.
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Figure 9. Connecting an external debug tool to program the on-board STM32H7
Table 5. MIPI-10 debug connector (CN5)
MIPI-10
Pin
STDC14
Pin CN5 Designation
-1NCReserved
-2NCReserved
13 T_VCCTarget VCC
24 T_SWDIO
Target SWDIO using SWD protocol or Target JTMS
(T_JTMS) using JTAG protocol
35 GNDGround
46 T_SWCLK
Target SWCLK using SWD protocol or Target JCLK (T_JCLK)
using JTAG protocol
57 GNDGround
68 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
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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: VIN (7 V to 12 V), E5V (5 V) or +3.3 V power supply pins on CN8 or CN11. In case
VIN, 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.
-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