ST B-U585I-IOT02A Manuale utente

Introduction

The B-U585I-IOT02A Discovery kit provides a complete demonstration and development platform for the STM32U585AI

microcontroller, featuring an Arm® Cortex®‑M33 core with Arm® TrustZone® and Armv8-M mainline security extension, 2 Mbytes

of flash memory and 786 Kbytes of SRAM, as well as smart peripheral resources.

This Discovery kit enables a wide diversity of applications by exploiting low-power communication, multiway sensing, and direct

connection to cloud servers.

It includes Wi‑Fi® and Bluetooth® modules, as well as microphones, temperature and humidity, magnetometer, accelerometer

and gyroscope, pressure, Time-of-Flight, and gesture-detection sensors.

The support for ARDUINO® Uno V3, STMod+, and Pmod™ connectivity provides unlimited expansion capabilities with a large

choice of specialized add-on boards.

For even more user-friendliness, the on-board STLINK-V3E debugger provides out-of-the-box loading and debugging

capabilities, as well as a USB Virtual COM port bridge.

The B-U585I-IOT02A Discovery kit leverages the STM32U5 series key assets to enable prototyping for a variety of wearable or

sensor applications in fitness, metering, industrial, or medical, with state-of-the-art energy efficiency and higher security.

Figure 1. B-U585I-IOT02A Discovery kit for the IoT node

Picture is not contractual.

Discovery kit for IoT node with STM32U5 series

UM2839

User manual

UM2839 - Rev 4 - May 2023

For further information contact your local STMicroelectronics sales office. www.st.com

1Features

• Ultra-low-power STM32U585AII6Q microcontroller based on the Arm® Cortex®‑M33 core with Arm®

TrustZone®, 2 Mbytes of flash memory and 786 Kbytes of SRAM, and SMPS in UFBGA169 package

• 512‑Mbit Quad-SPI flash memory, 64‑Mbit Octo‑SPI PSRAM, 256‑Kbit I2C EEPROM

• USB FS, Sink and Source power, 2.5 W power capability

• 802.11 b/g/n compliant Wi‑Fi® module from MXCHIP

• Bluetooth® Low Energy from STMicroelectronics

• MEMS sensors from STMicroelectronics

– 2 digital microphones

– Relative humidity and temperature sensor

– 3-axis magnetometer

– 3D accelerometer and 3D gyroscope

– Pressure sensor, 260-1260 hPa absolute digital output barometer

– Time-of-Flight and gesture-detection sensor

• Ambient-light sensor

• STSAFE authentication and security for peripherals and IoT devices from STMicroelectronics

• 2 user LEDs

• User push-button

• Reset push-button

• Board connectors

– USB Type-C®

– ARDUINO® Uno V3 expansion connectors

– Camera module expansion connector

– 2× STMod+ expansion connectors

– Pmod™ expansion connector

• Flexible power-supply options: ST-LINK USB VBUS, USB connector, 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

Note: Arm and TrustZone are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

UM2839

Features

UM2839 - Rev 4 page 2/54

2Ordering information

To order the B-U585I-IOT02A Discovery kit, 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

B-U585I-IOT02A MB1551 STM32U585AII6Q

2.1 Codification

The meaning of the codification is explained in Table 2.

Table 2. Codification explanation

B-XXXXM-AAANNT Description B-U585I-IOT02A

B Discovery kit with application focus Discovery kit for IoT node

XXXX MCU product line in STM32 32-bit Arm Cortex MCUs STM32U575/585 in the STM32U5 series

of ultra-low-power microcontrollers

MSTM32 flash memory size:

• I for 2 Mbytes 2 Mbytes

AAA Application focus:

• IOT for Internet of Things Internet of Things

NN Sequential number

Second Discovery kit for IoT node

(after B-L475E-IOT01A and its

B-L4S5I-IOT01A upgrade)

Connector type:

• A for ARDUINO®

• M for ST morpho

• Z for Zio connector

ARDUINO® connector

UM2839

Ordering information

UM2839 - Rev 4 page 3/54

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 and regions.

Linux® is a registered trademark of Linus Torvalds.

Windows is a trademark of the Microsoft group of companies.

3.2 Development toolchains

•IAR Systems® - IAR Embedded Workbench®(1)

•Keil® - MDK-ARM(1)

• STMicroelectronics - STM32CubeIDE

1. On Windows® only.

UM2839

Development environment

UM2839 - Rev 4 page 4/54

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

Capacitor Cx ON Capacitor soldered

Capacitor Cx OFF Capacitor not soldered

UM2839

Conventions

UM2839 - Rev 4 page 5/54

5Delivery recommendations

Before the first use, check the board for any damage that might have occurred during shipment, and check that all

socketed components are firmly fixed in their sockets and that none is loose in the plastic bag.

UM2839

Delivery recommendations

UM2839 - Rev 4 page 6/54

6Getting started

1. Make sure that the jumpers and switches are in the default position according to Figure 27.

2. Install the STLINK-V3E USB driver available on the www.st.com website.

3. Connect the board to the laptop using the CN8 ST-LINK connector, which is a USB Micro-B port.

4. Open a terminal like Tera Term and configure it with the following parameters:

– 115200 bps baud rate

– 8-bit data size

– No parity

5. The LD3 red COM LED is lit and the LD5 5V LED blinks.

6. Provide Wi‑Fi® credential (SSID/PWD) via terminal.

7. Via the browser (client), it is possible to ping the server via IP.

Now, a web page appears on the browser and the web page content is accessible.

UM2839

Getting started

UM2839 - Rev 4 page 7/54

7Hardware layout and configuration

The B-U585I-IOT02A Discovery kit is designed around the STM32U585AII6Q target microcontroller in a 169-pin

BGA package. The hardware block diagram in Figure 2 illustrates the connection between the STM32 and

peripherals:

Figure 2. Hardware block diagram

STM32U585AII6Q

MP23DB01HPTR digital

microphone

RTC

SWD

3.3 V Power

supply

32 KHz crystal

STLINK-V3E

GPIOs and

SPI2

MDF/ADF

EMW3080

Wi-Fi® module

Pmod™ connector

(CN4)

LEDs,

Reset and user buttons GPIOs

GPIOs, SPI1

GPIOs, and

UART2

USB Type-C®

Sink and Source USB-C

OCTOSPI2

MX25LM51245GXDI00

512-Mbit Octo-SPI flash

VCP

UART1

ARDUINO® Uno

shield connectors

GPIOs,

UART3,

and SPI1

USB

Micro-B

connector

GPIOs and

UART4

STM32WB5MMGH6TR

Bluetooth® module

M24256-DFMC6TG

I2C bus EEPROM

GPIOs and

I2C2

IIS2MDCTR 3-axis

magnetometer

ISM330DHCX

3D accelerometer

and 3D gyroscope

LPS22HH

digital barometer

HTS221

humidity and temperature

VL53L5CXV0GC/1

time-of-flight and gesture

detection

STSAFE-A110

authentication and

security

MP23DB01HPTR digital

microphone

GPIOs, SPI3

GPIOs, and

UART3

STMod+ connector

(CN2)

STMod+ connector

(CN3)

GPIOs, SPI1

GPIOs, and

UART2

Camera connector

GPIOs and

I2C1

VEML6030 / VEML3235

ambient light

64-Mbit Octo-SPI RAM

TCPP03 for

USB Type-C®

GPIOs and

I2C2

OCTOSPI1

UM2839

Hardware layout and configuration

UM2839 - Rev 4 page 8/54

Figure 3. B-U585I-IOT02A Discovery kit layout (top view)

DT55054V1

Microphones

(U6, U7)

STM32WB55

Bluetooth® Low Energy

module

(U1)

User LEDs

(LD6, LD7)

5V source

selection

(JP4)

STLINK-V3E

USB port (CN8)

STMod+

(CN3)

User button

(B3)

Reset button

(B2)

Camera connector

(CN7)

Pmod™

(CN4)

USB type-C®

(CN1)

5V power LED

(LD5)

STMod+

(CN2)

TAG connector

(CN10)

USB LED

(LD1)

WLAN module

(M1)

VL53L5

Time-of-flight

sensor

(U27)

VEML6030

Light

sensor

(U17)

Bluetooth® Low Energy

module debug connector

(CN5)

Bluetooth® Low Energy

module boot selection

(SW6)

Bluetooth® Low Energy

module power selection

(SW3)

UM2839 - Rev 4 page 9/54

UM2839

Hardware layout and configuration

Figure 4. B-U585I-IOT02A Discovery kit layout (bottom view)

DT55055V1

ARDUINO®

(CN13)

ARDUINO®

(CN17)

Bluetooth® module

USB (CN12)

ARDUINO® Power

(CN16)

Bluetooth® module

reset (B1)

Optional

battery holder

(CN15)

MCU debug switch

(SW4)

Bluetooth® Low Energy

debug switch

(SW5)

ARDUINO®

(CN14)

UM2839 - Rev 4 page 10/54

UM2839

Hardware layout and configuration

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