ST Nucleo U575ZI Q¶
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)
Three users LEDs
Two push-buttons: USER and RESET
USB Type-C™ Sink device FS
The STM32U575xx devices are an ultra-low-power microcontrollers family (STM32U5 Series) based on the high-performance Arm|reg| Cortex|reg|-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.
1.5 DMPIS/MHz (Drystone 2.1)
651 CoreMark® (4.07 CoreMark® /MHZ)
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
True Random Number Generator NIST SP800-90B compliant
96-bit unique ID
512-byte One-Time Programmable for user data
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
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 SysTick timer
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
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)
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™
Chrom-ART Accelerator (DMA2D) for enhanced graphic content creation
1 digital camera interface
CORDIC for trigonometric functions acceleration
FMAC (filter mathematical accelerator)
More information about STM32U575ZI can be found here:
The Zephyr nucleo_u575zi_q board configuration supports the following hardware features:
nested vector interrupt controller
serial port-polling; serial port-interrupt
Other hardware features are not yet supported on this Zephyr port.
The default configuration can be found in the defconfig file:
Connections and IOs¶
Nucleo U575ZI Q Board has 9 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.
For mode details please refer to STM32 Nucleo-144 board User Manual.
Default Zephyr Peripheral Mapping:¶
UART_1_TX : PA9
UART_1_RX : PA10
USER_PB : PC13
LD1 : PC7
LD2 : PB7
LD3 : PG2
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.
Nucleo U575ZI Q board has 6 U(S)ARTs. The Zephyr console output is assigned to USART1. Default settings are 115200 8N1.
Board is configured to be flashed using west STM32CubeProgrammer runner. Installation of STM32CubeProgrammer is then required to flash the board.
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 Hello World application.
Run a serial host program to connect with your Nucleo board:
$ minicom -D /dev/ttyACM0
Then build and flash the application.
# From the root of the zephyr repository west build -b nucleo_u575zi_q samples/hello_world west flash
You should see the following message on the console:
Hello World! arm
STM32U5 support is not currently supported in openocd. As a temporary workaround, user can use STMicroelectronics customized version of OpenOCD to debug the the Nucleo U575ZI Q. For this you need to fetch this repo, checkout branch “openocd-cubeide-r3” and build openocd following the instructions provided in the README of the project. Then, build zephyr project indicating the openocd location in west build command.
Here is an example for the Blinky application.
# From the root of the zephyr repository west build -b nucleo_u575zi_q samples/basic/blinky -- -DOPENOCD="<path_to_openocd>/openocd/src/openocd" -DOPENOCD_DEFAULT_PATH="<path_to_openocd>/openocd/tcl/"
Then, indicate openocd as the chosen runner in flash and debug commands:
$ west flash -r openocd $ west debug -r openocd