5 Quick start
The STM32H7Rx/7Sx Nucleo-144 board is a low-cost and easy-to-use development kit, to evaluate and start
development quickly with an STM32H7S3L8H6 microcontroller in a TFBGA225 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 STM32H7Rx/7Sx Nucleo-144 board and demonstration software, visit
the www.st.com/stm32nucleo webpage.
5.1
Getting started
Follow the sequence below to configure the STM32H7Rx/7Sx Nucleo-144 board and launch the demonstration
application (refer to Figure 5 for component location):
1. Check the jumper position on the board (refer to Figure 3 for the default board configuration).
2. For the correct identification of the device interfaces from the host PC and before connecting to the board,
install the STLINK-V3EC USB driver available on the www.st.com website.
3.
Connect the STM32H7Rx/7Sx Nucleo-144 board to a PC with a USB cable (USB Type-A or USB Type-C
®
to
USB Type-C
®
) through the USB connector (CN5) to power the board.
4. The 5V_PWR green (LD5) and COM (LD8) LEDs light up, and the green LED (LD1) blinks.
5. Press the blue user button (B2).
6. Observe how the blinking of the LEDs (LD1, LD2, and LD3) changes, according to the number of clicks on the
button (B2).
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 STM32H7Rx/7Sx Nucleo-144 board is configured with a 3V3 VDD_MCU power source. It is
possible to set the board for a 1V8 VDD_MCU power source. 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 settings are shown in Table 4.
Table 4. Default jumper configuration
Jumper
Definition Default position Comment
JP1 External debugger selection OFF Debug with internal ST-LINK
JP2 IDD measurement ON VDD_MCU current measurement
JP3
5 V power source selection
(user USB power source
selection)
[1-2] 5V source from STLINK-V3EC
JP5 VDD voltage selection [1-2] The VDD voltage selection is 3V3.
UM3276
Quick start
UM3276 - Rev 1
page 6/40
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