.. zephyr:board:: nucleo_u575zi_q

Overview

The Nucleo U575ZI Q board, featuring an ARM Cortex-M33 based STM32U575ZI MCU, 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. Here are some highlights of the Nucleo U575ZI Q board:

STM32U575ZI microcontroller in LQFP144 package
Internal SMPS to generate V core logic supply
Two types of extension resources:
- Arduino Uno V3 connectivity
- ST morpho extension pin headers for full access to all STM32 I/Os
On-board ST-LINK/V3E debugger/programmer
Flexible board power supply:
- USB VBUS or external source(3.3V, 5V, 7 - 12V)
- ST-Link V3E
Three users LEDs
Two push-buttons: USER and RESET
USB Type-C® Sink device FS

Hardware

The STM32U575xx devices are an ultra-low-power microcontrollers family (STM32U5 Series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 160 MHz.

Ultra-low-power with FlexPowerControl (down to 300 nA Standby mode and 19.5 uA/MHz run mode)
Core: ARM® 32-bit Cortex®-M33 CPU with TrustZone® and FPU.
Performance benchmark:
- 1.5 DMPIS/MHz (Drystone 2.1)
- 651 CoreMark® (4.07 CoreMark® /MHZ)
Security
- Arm® TrustZone® and securable I/Os memories and peripherals
- Flexible life cycle scheme with RDP (readout protection) and password protected debug
- Root of trust thanks to unique boot entry and secure hide protection area (HDP)
- Secure Firmware Installation thanks to embedded Root Secure Services
- Secure Firmware Update support with TF-M
- HASH hardware accelerator
- Active tampers
- True Random Number Generator NIST SP800-90B compliant
- 96-bit unique ID
- 512-byte One-Time Programmable for user data
Clock management:
- 4 to 50 MHz crystal oscillator
- 32 kHz crystal oscillator for RTC (LSE)
- Internal 16 MHz factory-trimmed RC (±1%)
- Internal low-power 32 kHz RC (±5%)
- 2 internal multispeed 100 kHz to 48 MHz oscillators, including one auto-trimmed by LSE (better than ±0.25 % accuracy)
- 3 PLLs for system clock, USB, audio, ADC
- Internal 48 MHz with clock recovery
Power management
- Embedded regulator (LDO)
- Embedded SMPS step-down converter supporting switch on-the-fly and voltage scaling
RTC with HW calendar and calibration
Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V
Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors
Up to 17 timers and 2 watchdogs
- 2x 16-bit advanced motor-control
- 2x 32-bit and 5 x 16-bit general purpose
- 4x low-power 16-bit timers (available in Stop mode)
- 2x watchdogs
- 2x SysTick timer
ART accelerator
- 8-Kbyte instruction cache allowing 0-wait-state execution from Flash and external memories: up to 160 MHz, MPU, 240 DMIPS and DSP
- 4-Kbyte data cache for external memories
Memories
- 2-Mbyte Flash memory with ECC, 2 banks read-while-write, including 512 Kbytes with 100 kcycles
- 786-Kbyte SRAM with ECC OFF or 722-Kbyte SRAM including up to 322-Kbyte SRAM with ECC ON
- External memory interface supporting SRAM, PSRAM, NOR, NAND and FRAM memories
- 2 Octo-SPI memory interfaces
Rich analog peripherals (independent supply)
- 14-bit ADC 2.5-Msps, resolution up to 16 bits with hardware oversampling
- 12-bit ADC 2.5-Msps, with hardware oversampling, autonomous in Stop 2 mode
- 2 12-bit DAC, low-power sample and hold
- 2 operational amplifiers with built-in PGA
- 2 ultra-low-power comparators
Up to 22 communication interfaces
- USB Type-C / USB power delivery controller
- USB OTG 2.0 full-speed controller
- 2x SAIs (serial audio interface)
- 4x I2C FM+(1 Mbit/s), SMBus/PMBus
- 6x USARTs (ISO 7816, LIN, IrDA, modem)
- 3x SPIs (5x SPIs with dual OCTOSPI in SPI mode)
- 1x FDCAN
- 2x SDMMC interface
- 16- and 4-channel DMA controllers, functional in Stop mode
- 1 multi-function digital filter (6 filters)+ 1 audio digital filter with sound-activity detection
CRC calculation unit
Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
True Random Number Generator (RNG)
Graphic features
- Chrom-ART Accelerator (DMA2D) for enhanced graphic content creation
- 1 digital camera interface
Mathematical co-processor
CORDIC for trigonometric functions acceleration
FMAC (filter mathematical accelerator)

More information about STM32U575ZI can be found here:

STM32U575ZI on www.st.com_
STM32U575 reference manual_

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

Nucleo U575ZI Q Board has 9 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to STM32 Nucleo-144 board User Manual_.

Default Zephyr Peripheral Mapping:

CAN/CANFD_TX: PD1
CAN/CANFD_RX: PD0
DAC1_OUT1 : PA4
I2C_1_SCL : PB8
I2C_1_SDA : PB9
I2C_2_SCL : PF1
I2C_2_SDA : PF0
LD1 : PC7
LD2 : PB7
LD3 : PG2
LPUART_1_TX : PG7
LPUART_1_RX : PG8
SPI_1_NSS : PA4
SPI_1_SCK : PA5
SPI_1_MISO : PA6
SPI_1_MOSI : PA7
UART_1_TX : PA9
UART_1_RX : PA10
UART_2_TX : PD5
UART_2_RX : PD6
USER_PB : PC13

System Clock

Nucleo U575ZI Q System Clock could be driven by internal or external oscillator, as well as main PLL clock. By default System clock is driven by PLL clock at 160MHz, driven by 4MHz medium speed internal oscillator.

Serial Port

Nucleo U575ZI Q board has 6 U(S)ARTs. The Zephyr console output is assigned to USART1. Default settings are 115200 8N1.

Backup SRAM

In order to test backup SRAM you may want to disconnect VBAT from VDD. You can do it by removing SB50 jumper on the back side of the board.

Programming and Debugging

.. zephyr:board-supported-runners::

Nucleo U575ZI-Q board includes an ST-LINK/V3 embedded debug tool interface. This probe allows to flash the board using various tools.

Flashing

The board is configured to be flashed using west STM32CubeProgrammer_ runner, so its :ref:installation <stm32cubeprog-flash-host-tools> is required.

Alternatively, OpenOCD, JLink, or pyOCD can also be used to flash the board using the --runner (or -r) option:

.. code-block:: console

$ west flash --runner openocd $ west flash --runner jlink $ west flash --runner pyocd

For pyOCD, additional target information needs to be installed. This can be done by executing the following commands.

.. code-block:: console

$ pyocd pack --update $ pyocd pack --install stm32u5

Flashing an application to Nucleo U575ZI Q

Connect the Nucleo U575ZI Q to your host computer using the USB port. Then build and flash an application. Here is an example for the :zephyr:code-sample:hello_world application.

Run a serial host program to connect with your Nucleo board:

.. code-block:: console

$ minicom -D /dev/ttyACM0

Then build and flash the application.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nucleo_u575zi_q :goals: build flash

You should see the following message on the console:

.. code-block:: console

Hello World! arm

Debugging

Default flasher for this board is openocd. It could be used in the usual way. Here is an example for the :zephyr:code-sample:blinky application.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: nucleo_u575zi_q :goals: debug

.. _STM32 Nucleo-144 board User Manual: https://www.st.com/resource/en/user_manual/dm00615305.pdf

.. _STM32U575ZI on www.st.com: https://www.st.com/en/microcontrollers/stm32u575zi.html

.. _STM32U575 reference manual: https://www.st.com/resource/en/reference_manual/rm0456-stm32u575585-armbased-32bit-mcus-stmicroelectronics.pdf

.. _STM32CubeProgrammer: https://www.st.com/en/development-tools/stm32cubeprog.html

.. _STMicroelectronics customized version of OpenOCD: https://github.com/STMicroelectronics/OpenOCD