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)
T
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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