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ST Nucleo-64 STM32U3 User Manual
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ST Nucleo-64 STM32U3 User Manual

ST Nucleo-64 STM32U3 User Manual

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Introduction
The Nucleo-64 boards based on the MB1841 reference board
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 STM32U3 series and STM32U5 series
microcontrollers.
®
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 STM32 Nucleo-64 board does not require any separate probe as it integrates the STLINK-V3EC debugger/programmer.
The STM32 Nucleo-64 board comes with the STM32 comprehensive free software libraries and examples available with the
STM32CubeU3
and
STM32CubeU5
Figure 1.
NUCLEO-U385RG-Q top view
Pictures are not contractual.
UM3062 - Rev 2 - February 2025
For further information, contact your local STMicroelectronics sales office.
STM32U3/U5 Nucleo-64 boards (MB1841)
(NUCLEO-U385RG-Q
MCU Packages.
and
NUCLEO-U545RE-Q
Figure 2.
NUCLEO-U385RG-Q bottom view
UM3062
User manual
order codes)
www.st.com

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Summary of Contents for ST Nucleo-64 STM32U3

  • Page 1 ® 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 STM32 Nucleo-64 board does not require any separate probe as it integrates the STLINK-V3EC debugger/programmer.
  • Page 2 ® – ARDUINO Uno V3 – ST morpho extension pin headers for full access to all STM32 I/Os • Flexible power-supply options: ST-LINK USB V , user USB connector, or external sources • On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port •...
  • Page 3 UM3062 Ordering information Ordering information To order the Nucleo-64, 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 Differentiating feature Microcontroller featuring NUCLEO-U385RG-Q STM32U385RGT6Q 1 Mbyte of flash memory and...
  • Page 4 The latest versions of the demonstration source code and associated documentation can be downloaded from www.st.com. CAD resources All board design resources, including schematics, CAD databases, manufacturing files, and the bill of materials, are available from the NUCLEO-U385RG-Q NUCLEO-U545RE-Q product pages at www.st.com. UM3062 - Rev 2 page 4/47...
  • Page 5 UM3062 Conventions Conventions 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...
  • Page 6 UM3062 Safety recommendations Safety recommendations Targeted audience This product targets users with at least basic electronics or embedded software development knowledge such as engineers, technicians, or students. This board is not a toy and is not suited for use by children. Handling the board This product contains a bare printed circuit board and like all products of this type, the user must be careful about the following points:...
  • Page 7 STM32U3 series or STM32U5 series microcontroller in an LQFP 64‑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 STM32 Nucleo-64 board and the software example, visit the www.st.com/...
  • Page 8 UM3062 Quick start Figure 3. Default board configuration JP3 [1-2 ] JP5 [1-2 ] JP4 [1-2 ] STM32 microcontroller UM3062 - Rev 2 page 8/47...
  • Page 9 [3-4] from CN6 or CN7 5V source from external 5V (E5V) from [5-6] CN6 or CN7 5V power selection 5V source from ST-LINK in USB charger [7-8] mode without USB negotiation (CN1) ® 5V source from user USB Type-C [9-10] (CN3) No 5V power source.
  • Page 10 Figure 4 shows the connections between the STM32 and its peripherals (STLINK-V3EC, push‑buttons, ® LEDs, USB, ARDUINO connectors, and ST morpho headers). Figure 5 Figure 6 show the location of these features on the STM32 Nucleo-64 board. The mechanical dimensions of the board are shown in Figure Figure 4.
  • Page 11 (LD4) STLK COM LED (LD1) 5V LED (LD3) MIPI10 (CN14) 5V jumper selection (JP3) User button Reset button (B1) (B1) ST morpho connector ST morpho connector (CN10) (CN7) VDD selection 3V3/1V8 IDD jumper (JP5) (JP4) ® ARDUINO D[15-8] ® ARDUINO...
  • Page 12 UM3062 Hardware layout and configuration Figure 6. Nucleo-64 board bottom layout SN sticker CPN sticker UM3062 - Rev 2 page 12/47...
  • Page 13 UM3062 Hardware layout and configuration Mechanical drawing Figure 7. Nucleo-64 board mechanical drawing (in millimeters) UM3062 - Rev 2 page 13/47...
  • Page 14 The chapter below gives some information about the implementation of the STLINK-V3EC on this Nucleo-64 board. For detailed information about ST-LINK capabilities, LED management, driver, and firmware for this STLINK-V3EC, refer to the technical note Overview of ST-LINK derivatives (TN1235).
  • Page 15 The driver installation is not mandatory since Windows 10 allocates an ST-specific name to the ST-LINK COM port in the system device manager. For detailed information on the ST-LINK USB driver, refer to the technical note Overview of ST-LINK derivatives (TN1235). 7.3.3 STLINK-V3EC firmware upgrade The STLINK-V3EC embeds a firmware upgrade (STSW-LINK007) mechanism through the USB port.
  • Page 16 UM3062 Hardware layout and configuration 7.3.4 Using an external debug tool to program and debug the on-board STM32 To support an external debug tool, set the jumper (JP1) to isolate the output I/O from STLINK-V3EC. Then connect the external debug tool through the STDC14/MIPI10 debug connector (CN4). When using the external debug connector (CN4), it is possible to use the STLINK-V3EC USB connector (CN1) to supply the Nucleo-64 board or select another power supply source as described in Section 7.4: Power supply and...
  • Page 17 UM3062 Hardware layout and configuration Figure 9 shows the STDC14/MIPI10 connector (CN4). Figure 9. STDC14/MIPI10 debug connector (CN4) STDC14/MIPI10 (CN4) Table 6. STDC14/MIPI10 debug connector (CN4) pinout describes the STDC14/MIPI10 connector (CN4) pinout. Table 6. STDC14/MIPI10 debug connector (CN4) pinout MIPI10 pin STDC14 pin Function...
  • Page 18 (CN1) ® • VIN: 7 to 12 V from ARDUINO (CN6) or ST morpho connector (CN7), with 5 V adaptation from LDO (U16) • E5V: External 5 V power from ST morpho connector (CN7) • CHGR: 5 V from STLINK-V3EC USB (CN1) without USB enumeration ®...
  • Page 19 UM3062 Hardware layout and configuration STLK is a 5 V DC power with limitations from the STLINK-V3EC USB connector (CN1). In this case, the 5V jumper selection (JP3) must be on pin [1-2] to select the STLK power source on the JP3 connector. This is the default setting.
  • Page 20 VIN (VIN_5V) is the 7 to 12 V DC power source from the ARDUINO connector (CN6) pin 8 (VIN), or from the ST morpho connector (CN7) pin 24. The 5V jumper selection (JP3) must be on pin [3‑4] to select the VIN_5V power ®...
  • Page 21 Hardware layout and configuration E5V is the DC power coming from an external 5 V DC power source from the ST morpho connector (CN7) pin 6. The 5V jumper selection (JP3) must be on pin [5-6] to select the E5V power source on the JP3 connector and must be connected as shown in Figure 12.
  • Page 22 UM3062 Hardware layout and configuration CHGR is when a DC power charger is connected to the USB STLINK-V3EC (CN1). To select the CHGR power source, the 5V jumper selection (JP3) must be on pins [7-8]. If an external USB charger powers the Nucleo-64 board, then the debugging feature through (CN1) is not available.
  • Page 23 UM3062 Hardware layout and configuration ® USB_USER is the DC power source coming from the 5 V of the USB Type-C connector (CN3). The 5V jumper selection (JP3) must be on pins [9-10] and must be connected as shown in Figure Figure 14.
  • Page 24 In case the current consumption of the Nucleo-64 and the expansion boards exceeds the allowed current on the ST-LINK USB connector, the external power VIN, E5V, or USB-USER can be used. In such a case, it is still possible to use the embedded ST-LINK for VCP, programming, and debugging.
  • Page 25 VDD, such as the level shifter power supply pins for STLINK-V3EC, the user button, ® the ARDUINO shield on the IOREF pin, and the power supply pins on the ST morpho connector. 7.4.5 MCU power supply...
  • Page 26 STLINK-V3EC tricolor LEDs (LD1 and LD4) The tricolor (green, orange, and red) LEDs provide information about STLINK-V3EC communication status (LD1) and power status (LD4). For detailed information about these LEDs, refer to the technical note Overview of ST- LINK derivatives (TN1235).
  • Page 27 • SB1 and SB2 ON • SB18 and SB22 OFF External oscillator connected to PC14 input From the external oscillator through pin 25 of the ST morpho connector (CN7). The following configuration is needed: • SB1 and SB2 OFF •...
  • Page 28 Uno V3 D0/D1 1. The default configuration is in bold. By default: • The serial communication between the target MCU and ST-LINK MCU is enabled on USART1 because this interface supports Bootloader mode. ® • The serial communication between the target MCU and ARDUINO Uno V3 or ST morpho connector is enabled on LPUART1, not to interfere with the VCP interface.
  • Page 29 By default, this pin is set to level “0” (pull‑down resistor), to boot on the internal flash. It is possible to put this GPIO to level “1” to boot on system flash (bootloader), by connecting a jumper (pitch 2.54 mm) between the ST morpho connector (CN7) pin 7 and pin 5 (VDD).
  • Page 30 Configuration channel: UCPD_CCx and dead battery UCPD_DBn: As the STM32 Nucleo-64 supports only Sink current mode with 5 V and 500 mA (2.5 W), these signals are directly connected to the ground through the ST USB port protection TCPP01-M12. •...
  • Page 31 UM3062 Hardware layout and configuration Table 11 describes the hardware configuration for the UCPD feature. Table 11. Hardware configuration for the UCPD feature Solder bridge Setting Configuration PC2 used as VBUS_SENSE SB31 PC2 NOT used for UCPD. It can be used on the expansion connector. 1.
  • Page 32 Six extension connectors are implemented on the Nucleo-64 board: ® • ARDUINO Uno V3 connectors (CN5, CN6, CN8, and CN9) • ST morpho connectors (CN7 and CN10) ® ARDUINO Uno V3 ® The CN5, CN6, CN8, and CN9 connectors are female connectors supporting the ARDUINO Uno V3 standard.
  • Page 33 UM3062 Extension connectors ® Table 13. ARDUINO power connector (CN6) pinout Pin name Signal name STM32 pin MCU function RESERVED IOREF IOREF I/O REF NRST NRST NRST RESET 3V3 input/output 5V output VIN (7-12 V) ® Table 14. ARDUINO ADC connector (CN8) pinout Pin name Signal name STM32 pin...
  • Page 34 UM3062 Extension connectors In MB1841D, D14/D15 are configured to PB7 and PB6: ® Table 16. ARDUINO D[15-8] connector (CN5) pinout (MB1841D) Pin name Signal name STM32 pin MCU function I2C_SCL I2C1_SCL/I2C4_SCL I2C_SDA I2C1_SDA/I2C4_SDA VREFP SPI_SCK SPI1_SCK SPI_MISO SPI1_MISO SPI_MOSI/PWM SPI1_MOSI/TIM3_CH2 SPI_NSS/PWM SPI_NSS/TIM3_CH4 TIM3_CH1...
  • Page 35 ST morpho headers (CN7 and CN10) The ST morpho connector consists of CN7 and CN10 2.54‑pitch male pin headers. They can be used to connect the STM32 Nucleo-64 board to an extension or a prototype/wrapping board placed on top of it. All signals and power pins of the STM32 are available on the ST morpho connector.
  • Page 36 UM3062 Extension connectors Table 18. ST morpho connector pin assignment CN7 odd pins CN7 even pins CN10 odd pins CN10 even pins Pin number Pin name Pin number Pin name Pin number Pin name Pin number Pin name PC10 PC11...
  • Page 37 UM3062 Extension connectors Solder bridge configuration for the expansion connector Table 19 details the solder bridges of the STM32 Nucleo-64 board for the expansion connector. Table 19. Solder bridge configuration Definition Bridge Setting (1)(2) Comment IOREF is not connected to the VDD power supply. IOREF is connected to the VDD power supply.
  • Page 38 • On the targeted STM32 that is soldered on the board (for an illustration of STM32 marking, refer to the STM32 datasheet Package information paragraph at the www.st.com website). • Next to the ordering part number of the evaluation tool that is stuck, or silk-screen printed on the board.
  • Page 39 UM3062 NUCLEO-U385RG-Q and NUCLEO-U545RE-Q product information NUCLEO-U385RG-Q and NUCLEO-U545RE-Q product history Table 20. Product history Order Product Product details Product change description Product limitations code identification MCU: • STM32U545RET6Q silicon revision "A" MCU errata sheet: SWDIO: Because of the level shifter •...
  • Page 40 UM3062 Federal Communications Commission (FCC) and ISED Canada Compliance Statements Federal Communications Commission (FCC) and ISED Canada Compliance Statements 10.1 FCC Compliance Statement Part 15.19 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 41 UM3062 Product disposal Product disposal Disposal of this product: WEEE (Waste Electrical and Electronic Equipment) (Applicable in Europe) This symbol on the product, accessories, or accompanying documents indicates that the product and its electronic accessories should not be disposed of with household waste at the end of their working life.
  • Page 42 UM3062 Revision history Table 22. Document revision history Date Revision Changes 03-Apr-2023 Initial release. Added NUCLEO-U385RG-Q product, and Safety recommendations Product disposal. 06-Feb-2025 Updated top and bottom views in Introduction and MCO clock configurable by software in OSC clock supply. UM3062 - Rev 2 page 42/47...
  • Page 43 UM3062 Contents Contents Features................2 Ordering information .
  • Page 44 ST morpho headers (CN7 and CN10) ........
  • Page 45 ST morpho connector pin assignment........
  • Page 46 ST morpho connector ........
  • Page 47 ST’s terms and conditions of sale in place at the time of order acknowledgment. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of purchasers’...

This manual is also suitable for:

Nucleo-64 stm32u5Mb1841