ST STM32U5 User manual
Introduction
The STM32U5 Nucleo-144 board based on the MB1549 reference board (NUCLEO-U575ZI-Q) 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 STM32U5 microcontroller.
The ST Zio connector, which extends the ARDUINO® Uno V3 connectivity, and the ST morpho headers provide easy expansion
of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields.
The STM32U5 Nucleo-144 board does not require any separate probe as it integrates the STLINK-V3E debugger/programmer.
The STM32U5 Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available with the
STM32CubeU5 MCU Package.
Figure 1. STM32U5 Nucleo-144 board
Picture is not contractual.
STM32U5 Nucleo-144 board (MB1549)
UM2861
User manual
UM2861 - Rev 2 - September 2021
For further information contact your local STMicroelectronics sales office. www.st.com
1Features
•STM32U5 Series microcontroller (Arm® Cortex®-M33 at 160 MHz) in LQFP144 package
• Internal SMPS to generate Vcore logic supply, identified by '-Q' suffixed boards(1)
• USB Type-C® sink device FS
• 3 user LEDs
• RESET and USER push-buttons
• 32.768 kHz crystal oscillator
• Board connectors:
–USB Type-C® connector
–ST Zio connector including ARDUINO® Uno V3
– ST morpho extension pin headers for full access to all STM32 I/Os
• Flexible power-supply options: ST-LINK, USB VBUS, or external sources
• On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, Virtual
COM port, and debug port
• Comprehensive free software libraries and examples available with the STM32CubeU5 MCU Package
• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded
Workbench®, MDK-ARM, and STM32CubeIDE
1. SMPS significantly reduces power consumption in Run mode, by generating Vcore logic supply from an internal DC/DC
converter.
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 NUCLEO-U575ZI-Q 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-U575ZI-Q MB1549 STM32U575ZIT6Q
2.1 Products and codification
The meaning of the codification is explained in Table 1.
Table 2. Codification explanation
NUCLEO-XXYYZE-Q Description Example: NUCLEO-U575ZI-Q
XX MCU series in STM32 Arm Cortex MCUs STM32U5 Series
YY MCU product line in the series STM32U575/585
Z STM32 package pin count 144 pins
E
STM32 Flash memory size:
• I for 2 Mbytes
• J for 4 Mbytes
2 Mbytes
-Q STM32 has an internal SMPS function SMPS
The order code is mentioned on a sticker placed on the top or bottom side of the 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 Micro-B cable
Note: macOS® is a trademark of Apple Inc. registered in the U.S. and other countries.
Linux® is a registered trademark of Linus Torvalds.
All other trademarks are the property of their respective owners.
3.2 Development toolchains
• IAR Systems® - IAR Embedded Workbench®(1)
• Keil® - MDK-ARM(1)
• STMicroelectronics - STM32CubeIDE
1. On Windows® only.
3.3 Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to the on-board
microcontroller, is preloaded in the STM32 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 www.st.com.
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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
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Conventions
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5Quick start
The STM32U5 Nucleo-144 board is a low-cost and easy-to-use development kit, to quickly evaluate and start
development with an STM32U5 Series microcontroller in an LFQFP144-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 STM32U5 Nucleo-144 board and demonstration software, visit the www.st.com/stm32nucleo
webpage.
5.1 Getting started
Follow the sequence below to configure the STM32U5 Nucleo-144 board and launch the demonstration
application (refer to Figure 4 for component location):
1. Check the jumper position on the board (refer to Default board configuration).
2. For the correct identification of the device interfaces from the host PC and before connecting the board,
install the STLINK-V3E USB driver available on the www.st.com website.
3. Connect the STM32U5 Nucleo-144 board to a PC with a USB cable (USB Type-A or USB Type-C® to
Micro-B) through the USB connector CN1 to power the board.
4. The LD5 5V_PWR green LED and LD4 COM LED light up, and the green LD1 blinks.
5. Press the B1 blue user button.
6. Observe how the blinking of the LEDs LD1, LD2, and LD3 changes, according to clicks on button B1.
7. Download the demonstration software and several software examples that help to use the STM32 Nucleo
features. These are available on the www.st.com website.
8. Develop your application using the available examples.
5.2 Default board configuration
By default, the STM32U5 Nucleo-144 board is configured with VDD_MCU@3V3. It is possible to set the board for
VDD_MCU@1V8. Before switching to 1V8, check that the extension module and external shield connected to the
NUCLEO board are 1.8 V compatible.
The default jumper configuration and voltage setting are shown in Table 4.
Table 4. Default jumper configuration
Jumper Definition Default position Comment
JP1 STLK_NRST OFF STLINK-V3E MCU not under reset mode
JP2 T_NRST ON RST connected between MCU target
and debugger
JP4 VDD [1-2] VDD MCU voltage selection 3V3
JP5 IDD measurement ON MCU VDD current measurement
JP6 5V power selection [1-2] 5V from STLINK-V3E
JP7 UCPD_DBCC1 OFF Refer to Section 6.11.2 UCPD.
JP8 UCPD_DBCC2 OFF Refer to section Section 6.11.2 UCPD.
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Figure 2. Default board configuration
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Default board configuration
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Table 5 explains the other jumper settings and configurations.
Table 5. Jumper configuration
Jumper Definition Setting(1) Comment
JP1 STLK_RST
ON Use to reset the STLINK-V3E MCU
when an external debug probe is used.
OFF Normal mode: use the STLINK-V3E
debug probe
JP2 T_NRST
ON STLINK-V3E able to reset target MCU
OFF
STLINK-V3E not able to reset Target
MCU configuration to use when an
external debug probe is used.
JP4 VDD voltage selection
[1-2] VDD voltage selection is 3V3
[2-3] VDD voltage selection is 1V8
OFF No internal VDD power supply
(External 3V3 or 1V8 needed)
JP5 IDD measurement
ON MCU is powered by the on‑board
power supplies.
OFF
Use an ammeter to measure the MCU
power consumption, or connect an
external source 3V3 or 1V8 on pin
2 to supply the MCU (STLINK-PWR
tools with STM32CubeMonitor-Power or
ULPBench probe as exemple)
JP6 5V Power selection
[1-2] 5V source from STLINK-V3E
[3-4] 5V source from ARDUINO® VIN 7-12V
[5-6] 5V source from 5V_EXT
[7-8] 5V source from USB Type-C®
[9-10]
5V source from USB_CHGR
(from CN1 STLINK-V3E USB connector
without overcurrent protection)
OFF NO 5V power source, configuration
when external 3V3 is used.
JP7 UCPD_DBCC1
OFF UCPD_DBCC1 NOT connected to
GND
ON UCPD_DBCC1 connected to GND (For
debug purpose)
JP8 UCPD_DBCC2
OFF UCPD_DBCC2 NOT connected to
GND
ON UCPD_DBCC2 connected to GND (For
debug purpose)
1. The default configuration is in bold.
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Default board configuration
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6Hardware layout and configuration
The STM32U5 Nucleo-144 board is designed around an STM32U5 microcontroller in an LFQFP 144-pin package.
Figure 3 shows the connections between the STM32 and its peripherals (STLINK-V3E, push‑buttons, LEDs, USB
ST Zio connectors, and ST morpho headers). Figure 4 and Figure 5 show the location of these features on the
STM32U5 Nucleo-144 board.
The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
STM32U575ZI-Q
OSC_32
SWD
32KHz
Crystal
VCP
UART
GPIOs
GPIO
LED
GPIO
Embedded
STLINK-V3E
STDC14/MIPI10
SWD VCP
UART
USB MicroB
connector
B1
User
B2
RST
ARDUINO
MORPHO
GPIO
ARDUINO
MORPHO
5V
PWR SEL
5V
LED
RES COM
T_NRST
STLK
NRST
LEDLED
IDD1V8 / 3V3
USB Type C
connector
GND
GND
GNDGND
SWDUART
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Hardware layout and configuration
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6.1 STM32U5 Nucleo-144 board layout
Figure 4. STM32U5 Nucleo-144 board top layout
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STM32U5 Nucleo-144 board layout
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