STM32WBA55G-DK1 Discovery Kit

Data brief for the Discovery kit with STM32WBA55CG MCU

Features

Ultra-low-power wireless STM32WBA55CGU7 microcontroller based on the Arm® Cortex®-M33 core, featuring 1 Mbyte of flash memory and 128 Kbytes of SRAM in a UFQFPN48 package.
MCU RF board (MB1803): 2.4 GHz RF transceiver supporting Bluetooth® specification v5.4, Bluetooth® Low Energy specification supporting LE Audio, Arm® Cortex®-M33 CPU with Arm® TrustZone®, MPU, DSP, and FPU, Integrated PCB antenna.
One digital microphone
OLED display
One user LED
User joystick with 4-direction control and selector button
Reset push-button
Board connectors: ARDUINO® Uno V3 expansion connector, STMod+ expansion connector, Grove, USB Type-C®, Battery, Two 3.5 mm stereo jack sockets for input and output with microphone MIPI10, Tag-Connect™ 10-pin footprint.
Flexible power-supply options: ST-LINK USB VBUS or external sources.
On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port.
Comprehensive free software libraries and examples available with the STM32CubeWBA MCU Package.
Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE.

Description

The STM32WBA55G-DK1 Discovery kit is a complete demonstration and development platform for the STM32WBA55CGU7 microcontroller. It features an Arm® Cortex®-M33 core with Arm® TrustZone® and mainline security extension, 1 Mbyte of flash memory, and 128 Kbytes of SRAM, along with smart peripheral resources. The kit embeds a powerful and ultra-low-power radio compliant with Bluetooth® Low Energy SIG resources, enabling a wide diversity of applications by exploiting low-power communication, the Bluetooth® SIG isochronous channel feature for audio capability, Matter as Border Router, and Zigbee®. The support for ARDUINO® Uno V3 and STMod+ connectivity provides expansion capabilities with a large choice of specialized add-on boards. The kit integrates an STLINK-V3EC embedded in-circuit debugger and programmer with a USB Virtual COM port bridge and includes the STM32CubeWBA MCU Package, offering an STM32 comprehensive software HAL library and various software examples. The STM32WBA55G-DK1 Discovery kit leverages the STM32WBA series key assets for prototyping a variety of wireless, low-energy applications in fitness, metering, industrial, or medical sectors, emphasizing state-of-the-art energy efficiency and higher security.

Ordering Information

To order the STM32WBA55G-DK1 Discovery kit, refer to Table 1. For detailed descriptions of each board, consult the user manual on the product web page. Additional information is available from the datasheet and reference manual of the target STM32.

Table 1. Ordering information
Order code	Board reference	User manual	Target STM32
STM32WBA55G-DK1	MB1802⁽¹⁾ MB1803⁽²⁾	UM3255	STM32WBA55CGU7
1. Mezzanine board
2. MCU RF board

Product marking

Stickers on the PCBs provide product information. The first sticker typically shows the product order code and identification. The second sticker displays the board reference with revision and serial number.

Example for the second sticker format: MBxxxx-Variant-yzz syywwXXXXX

Parts marked as “ES” or “E” are engineering samples and not approved for production. ST is not responsible for consequences of their use in production. Contact ST's Quality department before using engineering samples for qualification.

“ES” or “E” markings can be found on the targeted STM32 soldered on the board, or next to the evaluation tool ordering part number.

Some boards feature a specific STM32 device version with a “U” marking, allowing operation of bundled commercial stacks/libraries. This version is not available for sales. Developers needing to use the same commercial stack may need to purchase a part number specific to that stack/library, which includes royalties.

Codification

The meaning of the codification is explained in Table 2.

Table 2. Codification explanation
STM32XXXYYZ-DKT	Description	Example: STM32WBA55G-DK1
XXX	MCU series in STM32 32-bit Arm Cortex MCUs	STM32WBA series
YY	MCU product line in the series	STM32WBA54/55 product line
Z	STM32 flash memory size: • G for 1 Mbyte	1 Mbyte
DK	Discovery kit	Discovery kit
T	Sequential number	First Discovery kit version

Development environment

The STM32WBA55G-DK1 Discovery kit runs with the STM32WBA55CGU7 32-bit microcontroller based on the Arm® Cortex®-M33 core with Arm® TrustZone®.

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

System requirements

Multi-OS support: Windows® 10, Linux® 64-bit, or macOS®
USB Type-A or USB Type-C® to USB Type-C® 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.

Development toolchains

IAR Systems® - IAR Embedded Workbench®⁽¹⁾
Keil® - MDK-ARM⁽¹⁾
STMicroelectronics - STM32CubeIDE

⁽¹⁾ On Windows® only.

Demonstration software

The demonstration software, included in the STM32Cube MCU Package for the on-board microcontroller, is preloaded in the STM32 flash memory for easy demonstration of the device peripherals in standalone mode. The latest versions of the demonstration source code and associated documentation can be downloaded from www.st.com.

Revision history

Table 3. Document revision history
Date	Revision	Changes
22-Mar-2024	1	Initial release.
20-Jun-2024	2	Updated microcontroller package and board connector order.

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