STMicroelectronics STM32WBA55G-DK1 User Manual

UM3255
User manual
Discovery kit with STM32WBA55CG MCU
Introduction
The STM32WBA55G-DK1 Discovery kit is a complete demonstration and development platform for the STM32WBA55CGU7
microcontroller, featuring an Arm® Cortex®‑M33 core with Arm® TrustZone® and mainline security extension, 1 Mbyte of flash
memory, and 128 Kbytes of SRAM, as well as smart peripheral resources.
The STM32WBA55G-DK1 Discovery kit embeds a powerful and ultra-low-power radio compliant with the Bluetooth® Low
Energy SIG resources. This Discovery kit enables a wide diversity of applications by exploiting low-power communication, the
Bluetooth® SIG isochronous channel feature related to audio capability for Bluetooth® Low Energy Audio, 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 STM32WBA55G-DK1 Discovery kit integrates an STLINK-V3EC embedded in-circuit debugger and programmer for the
STM32 microcontroller with a USB Virtual COM port bridge and comes with the STM32CubeWBA MCU Package, which
provides an STM32 comprehensive software HAL library as well as various software examples.
The STM32WBA55G-DK1 Discovery kit leverages the STM32WBA series key assets to enable prototyping for a variety of
wireless, low‑energy applications in fitness, metering, industrial, or medical, with state-of-the-art energy efficiency, and higher
security.
Figure 1. STM32WBA55G-DK1 top view
Figure 2. STM32WBA55G-DK1 bottom view
Pictures are not contractual.
UM3255 - Rev 1 - March 2024
For further information contact your local STMicroelectronics sales office.
www.st.com
UM3255
Features
1
Features
•
•
•
•
•
•
•
•
•
•
•
•
Note:
UM3255 - Rev 1
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 QFN48 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:
–
–
–
–
–
USB Type-C®
One jack socket with stereo line input and one jack socket with stereo output and microphone input
Battery
Grove
MIPI10
–
Tag‑Connect™ 10‑pin footprint
–
ARDUINO® Uno V3 expansion connector
–
STMod+ expansion connector
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
Arm and TrustZone are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
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UM3255
Ordering information
2
Ordering information
To order the STM32WBA55G-DK1 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
•
•
STM32WBA55G-DK1
MB1802(1)
MB1803(2)
Target STM32
STM32WBA55CGU7
1. Mezzanine board
2. MCU RF board
2.1
Codification
The meaning of the codification is explained in Table 2.
Table 2. Codification explanation
STM32XXXYYZ-DKT
XXX
MCU series in STM32 32-bit Arm Cortex MCUs
YY
MCU product line in the series
Z
UM3255 - Rev 1
Description
STM32 flash memory size:
•
G for 1 Mbyte
DK
Discovery kit
T
Sequential number
Example: STM32WBA55G-DK1
STM32WBA series
STM32WBAx5 product line
1 Mbyte
Discovery kit
First Discovery kit version
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Development environment
3
Development environment
3.1
System requirements
Note:
•
Multi‑OS support: Windows® 10, Linux® 64-bit, or macOS®
•
USB Type-A or USB Type-C® to USB Type-C® cable
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.
3.3
Demonstration software
The demonstration software, included in the STM32Cube MCU Package corresponding to 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.
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Conventions
4
Conventions
Table 3 provides the conventions used for the ON and OFF settings in the present document.
Table 3. ON/OFF convention
UM3255 - Rev 1
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
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UM3255
Safety recommendations
5
Safety recommendations
5.1
Targeted audience
This product targets users with at least basic electronics or embedded software development knowledge like
engineers, technicians, or students.
This board is not a toy and is not suited for use by children.
5.2
Handling the board
This product contains a bare printed circuit board and as with all products of this type, the user must be careful
about the following points:
•
•
•
•
•
UM3255 - Rev 1
The connection pins on the board might be sharp. Be careful when handling the board to avoid hurting
yourself
This board contains static‑sensitive devices. To avoid damaging it, handle the board in an ESD‑proof
environment.
While powered, do not touch the electric connections on the board with your fingers or anything conductive.
The board operates at voltage levels that are not dangerous, but components might be damaged when
shorted.
Do not put any liquid on the board. Avoid operating the board close to water or at a high humidity level.
Do not operate the board if dirty or dusty.
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UM3255
Quick start
6
Quick start
This section describes how to start quickly development using STM32WBA55G-DK1.
To use the product, the user must accept the evaluation product license agreement from the www.st.com/epla
webpage.
Before the first use, make sure that no damage occurred to the board during shipment:
•
•
All components are firmly secured in their sockets.
No component is loose in the board's carton.
STM32WBA55G-DK1 is an easy-to-use Discovery kit to evaluate and start development with an STM32
microcontroller in a QFN48 package.
6.1
Getting started
Follow the sequence below to configure the STM32WBA55G-DK1 Discovery board and launch the demonstration
application (refer to Figure 4 for component locations):
1. Check jumper positions on board: JP4 on 5V_STLK position, JP5 ON, JP7 ON [1-2], and JP6 OFF.
2. Connect the Discovery board with a USB Type-C® cable through the USB connector (CN6).
3. Connect a headset (optionally with microphone and 4-pin jack to enable bidirectional streams) on the 3.5‑mm
jack connector (CN3).
4. At startup, press the right direction on the joystick two times to start advertising.
5. Using a device compatible with Bluetooth® Low Energy audio unicast client role, like a smartphone supporting
the low energy audio feature, connect to the unicast server and link up the available services. Once the
unicast client is connected, start a streaming procedure on it, media playing or call, to send audio to the
unicast server. Ensure that the volume is up.
6. For further information, refer to the ST Bluetooth® Low Energy audio wiki pages.
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UM3255
Hardware layout and configuration
7
Hardware layout and configuration
The STM32WBA55G-DK1 Discovery kit is designed around the STM32WBA55CGU7 in a QFN48 package. The
hardware block diagram in Figure 3 illustrates the connection between the MCU and peripherals, such as
embedded ST-LINK, ARDUINO® Uno shields, STMod+ connector, digital microphones, audio codec, and OLED
display. Figure 4 and Figure 5 help to locate these features on the actual Discovery board.
Figure 3. Hardware block diagram
3.3 V
power supply
STM32WBA55CGU7
32 KHz crystal
LSE
32 MHz crystal
HSE
SAI
Digital microphone
VCP
USART1
USB
Type-C®
connector
STLINKV3EC
STMod+ connector
ARDUINO® Uno
shield connectors
RESET
GPIOs and
SPI3
OLED
GPIOs and SPI3
GPIOs and USART2
I2C and
SAI
Audio codec with
input and output
stereo jacks
GPIOs
LEDs and user
buttons
GPIOs, USART2,
and SPI3
NRST
ADC
DT59235V1
Joystick
SWD
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UM3255
Hardware layout and configuration
Figure 4. STM32WBA55G-DK1 Discovery kit IoT node board (top view)
MCU RF board
Digital microphone input
(U21)
Audio stereo output jack
with microphone
(CN3)
Audio input stereo
jack with microphone
(CN4)
OLED RST selection
(JP7)
Battery input (CN16)
5V power LED
(LD4)
Grove connector
(CN13)
5V source selection
(JP4)
USB LED (LD3)
Grove connector
5V or 3V selection (JP3)
STLINK-V3EC
USB port
(CN6)
ST-LINK reset jumper (JP1)
UART or SPI selection
on STMod+ (JP2)
STDC14/MIPI10
debug connector
(CN14)
Power status LED (LD1)
TAG connector (CN15)
Reset button (B3)
COM status LED (LD2)
User joystick
OLED display (U13)
DT59236V1
STMod+ connector (CN12)
Figure 5. STM32WBA55G-DK1 Discovery kit IoT node (bottom view)
Digital microphone
(U21)
ARDUINO® Digital
(CN10)
ARDUINO® Analog
(CN11)
ARDUINO® Power
(CN9)
®
DT59237V1
ARDUINO Digital
(CN8)
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Hardware layout and configuration
Figure 6. STM32WBA55G-DK1 Discovery board mechanical drawing (top view, in millimeters)
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Hardware layout and configuration
7.1
Embedded STLINK-V3EC
There are two different ways to program and debug the on-board STM32WBA55 MCU:
•
•
The STLINK-V3EC programming and debugging tool is integrated into the STM32WBA55G-DK1 Discovery
kit.
The embedded STLINK-V3EC supports only SWD and VCP for STM32WBA55 devices. For information
about debugging and programming features refer to the technical note Overview of ST-LINK derivatives
(TN1235), which describes in detail all the STLINK-V3EC features.
For information about the debugging and programming with STLINK-V3EC, refer to the user manual STLINKV3SET debugger/programmer for STM8 and STM32 (UM2448).
Features supported on ST-LINK/V3EC:
•
•
•
•
•
•
•
5 V/500 mA power supplied by USB connector (CN6)
USB 2.0 high-speed-compatible interface
JTAG/SWD (Serial Wire Debug) with SWV (Serial Wire Viewer)
3 to 3.6 V application voltage on the JTAG/SWD interface and 5 V tolerant inputs
MIPI10 compatible connector (CN14)
Status COM LED (LD2) which blinks during communication with the PC (red by default)
Fault LED (LD1) alerting on USB overcurrent (green, orange, or red)
•
USB-C® overvoltage protection (U9) with current limitation
For detailed information about these LEDs, refer to the technical note Overview of ST-LINK derivatives (TN1235).
7.1.1
Drivers
The driver installation is not mandatory since Windows® 10 but if done, it allocates an ST‑specific name to the STLINK COM port in the system device manager.
For detailed information on the ST-LINK USB drivers, refer to the technical note Overview of ST-LINK derivatives
(TN1235).
7.1.2
STLINK-V3EC firmware upgrade
The STLINK-V3EC embeds a firmware upgrade mechanism through the USB port. The firmware might evolve
during the lifetime of the STLINK-V3EC product (for example to add new functionalities, fix bugs, and support new
microcontroller families). Make sure to have the latest ST-LINK firmware version before using the
STM32WBA55G-DK1 board. The latest version of this firmware is available from the www.st.com website.
For detailed information on the ST-LINK firmware upgrade, refer to the technical note Overview of ST-LINK
derivatives (TN1235).
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Hardware layout and configuration
7.1.3
Using an external debug tool to program and debug the on-board STM32
Set the embedded STLINK-V3EC in a high‑impedance state: When the jumper JP1 (STLK_RST) is ON, the
embedded STLINK-V3EC is put in Reset state and all GPIOs in high impedance, then you can connect the
external debug tool on the debug connector (CN14).
Table 4. MIPI10 debug connector (CN14) pinout
MIPI10 pin
CN14
Function
-
NC
Reserved
-
NC
Reserved
1
T_VCC
Target VCC
2
T_SWDIO
Target SWDIO using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
3
GND
4
T_SWCLK
5
GND
Ground
6
T_SWO
Target SWO using SWD protocol or target JTDO (T_JTMS) using JTAG protocol
7
T_JRCLK
Not used by SWD protocol, target JRCLK (T_JRCLK) using JTAG protocol, only for
specific use
8
T_JTDI
Not used by SWD protocol, target JTDI (T_JTDI) using JTAG protocol, only for
external tools
9
GNDdetect
Ground detection for plug indicator, used on SWD and JTAG neither
10
T_NRST
Target NRST using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
-
T_VCP_RX
Target RX used for VCP (must be UART dedicated to the bootloader
-
T_VCP_TX
Target TX used for VCP (must be UART dedicated to the bootloader
Ground
Target SWCLK using SWD protocol or target JCLK (T_JCLK) using JTAG protocol
The TAG connector is implemented on the STM32WBA55G-DK1 Discovery kit IoT node board. The TAG
connector is a 10‑pin footprint that supports SWD and JTAG modes.
.
UM3255 - Rev 1
DT59239V1
Figure 7. TAG connector
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UM3255
Hardware layout and configuration
Table 5. TAG footprint (CN15) pinout for TC2050-IDC-NL cable
CN15 pin
Signal
Function
Target power(2)
1
3V3
2
MCU.SWDIO
3
GND
4
MCU.SWCLK
5
GND
6
MCU.SWO
7
NC
8
MCU.JTDI
Not used by SWD protocol, target JTDI (T_JTDI) using JTAG protocol
9
JNTRST
JTAG reset
10
NRST
Target NRST using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
Target SWDIO using SWD protocol or target JTMS (T_JTMS) using JTAG protocol
Ground
Target SWCLK using SWD protocol or target JTCK (T_JTCK) using JTAG protocol
Ground
It must be disconnected (SB1) if the debugger probe provides a power supply on this pin.
Target SWO using SWD protocol or target JTDO (T_JTDO) using JTAG protocol(3)
NC(1)
1. Not connected on this board
2. Output for this board
3. SWO is optional and required only for Serial Wire Viewer (SWV) trace.
7.2
Power supply
The STM32WBA55G-DK1 Discovery kit IoT node board is designed to be powered by a 5 V DC power supply. It
is possible to configure the Discovery board using a jumper on JP4 to use any of the following four sources for the
power supply (5V_USB_STLK, 5V_VIN, 5V_EXT, and 5V_USB_CHGR). The user must only connect one source
at a time.
5V_STLK
5V_STLK is a 5 V DC power with limitation from the STLINK-V3EC USB Type-C® connector (CN6). In that case,
a jumper must be set on [1‑2] to select the 5V_USB_STLK power source on the JP4 silkscreen (refer to Figure 8
below). This is the default setting. If the USB enumeration succeeds (as explained below), the 5V_STLK power is
enabled, by asserting the T_PWR_EN signal (from STLINK-V3EC MCU). This pin is connected to a power
controller TPS259535DSG, which powers the board. This power controller also features a current limitation to
protect the PC, in case of a short circuit on board or if the USB port is unable to provide the necessary current.
DT59240V1
Figure 8. 5V_USB_STLK selection: JP4 [1-2]
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Hardware layout and configuration
5V_VIN
5V_VIN is the 7 to 12 V DC power from the ARDUINO® connector (CN9 pin 8) named VIN on the ARDUINO®
connector silkscreen (the extension connectors for ARDUINO® Uno shields or daughterboards). In this case, a
jumper must be set on [3‑4] to select the 5V_VIN power source on the JP4 silkscreen (refer to Figure 9 below). In
this case, the DC power can come from the power supply through the ARDUINO® battery shield (compatible with
Adafruit® PowerBoost 500 shield).
DT59241V1
Figure 9. 5V_VIN selection from CN17 (VIN): JP4 [3-4]
5V_EXT
5V_EXT is the 5 V DC power provided by an external source like a battery or regulator from the CN16 connector.
In this case, a jumper must be set on [5‑6] to select the 5V_EXT on the JP4 silkscreen (refer to Figure 10).
The product must be powered by a voltage source or auxiliary equipment that complies with EN
62368-1:2014+A11:2017
DT59242V1
Figure 10. 5V_EXT selection: JP4 [5-6]
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UM3255
Hardware layout and configuration
VBUS_STLK
5V_USB_CHGR is the DC power charger connected to the USB STLINK (CN6). Then, a jumper must be on [7‑8]
to select the 5V_USB_CHARGER power source on the JP4 silkscreen. In this case, if the STM32WBA55G-DK1
Discovery board is powered by an external USB charger then the debug is not available. If a PC is connected
instead of the charger, then the limitation is no more effective and that might damage the PC.
DT59243V1
Figure 11. 5V_USB_CHGR selection: JP4 [7-8]
Note:
If the board is powered by a USB charger, there is no USB enumeration, so the red LED (LD2) remains OFF
permanently.
Caution:
Do not connect a PC to the ST-LINK connector (CN6). The PC might be damaged. The green LED (LD1) is lit
when 5V powers correctly the STM32WBA55G-DK1 Discovery board.
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UM3255
Hardware layout and configuration
The power tree is the following one:
Figure 12. Power tree
5V_USB_STLK
5V_VIN
U20
5V_VIN
USB_ST_LINK (CN6)
5V
10
VIN
LDO
12 V max. input
ARDUINO®
(CN8-CN11)
VREFP
1
1
8
8
1
CN16
6
CN14
1
3V3
U19
3V3
CN13
CN17
1V8
Audio 1V8 LDO
Audio codec (U4)
5V
STMod+ connectors (CN12)
U16
5V
3V6
3.6V LDO
OLED (U13)
U11
3V3_STLK
LDO 3V3
ST_LINKV3EC
Joystick (B1)
U9
Power Switch 5V/3A
USBC protection
Grove connector (CN13)
Digital microphone (U21)
OLED (U13)
U18
JP4
5V
5V_STLK
3.3 V LDO
MIPI10 (CN14)
3V3
5V_VIN
TAG (CN15)
5V_VEX
VBUS_STLK
JP4
VDD_MCU
DT59244V1
JP5
7.3
Clock sources
7.3.1
HSE clock reference
The accuracy of the high‑speed clock (HSE) of the MCU RF board is committed to a 32 MHz crystal oscillator.
The HSE oscillator is trimmed during board manufacturing.
7.3.2
LSE clock reference
The accuracy of the low‑speed clock (LSE) of the MCU RF board is committed to a 32.768 kHz crystal oscillator.
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Hardware layout and configuration
7.4
Reset sources
The reset signal of the STM32WBA55G-DK1 Discovery kit is active at a low level and the reset sources can come
from:
7.5
•
The reset push-button (B3),
•
•
•
The CN9 pin3 of the ARDUINO® connector,
The embedded STLINK-V3EC debugger,
Or the MIPI10 and TAG interfaces.
Virtual COM port
The serial interface USART1 is directly available as a Virtual COM port of the PC, connected to the STLINK-V3EC
USB connector (CN6).
7.6
Audio codec
There is a low‑power stereo audio codec (U4) with a headphone amplifier, provided with STM32WBA55G-DK1.
Input and output stereo jacks are also provided.
The MCU is connected to the audio codec using an I2C interface for the control path (I2C3) and the SAI1 interface
for the data path.
7.7
Onboard MEMS audio sensor omnidirectional digital microphone
A miniature high‑performance low‑power silicon digital microphone with a single‑bit PDM output is available on
this Discovery board and connected to the SAI interface.
7.8
Display
On the STM32WBA55G-DK1 Discovery board, an OLED display with a panel matrix of 128x64, 2000/1 contrast is
provided on SPI3. Make sure that jumper JP7 is in the position [1-2] to select the OLED reset.
7.9
Buttons and LEDs
Joystick
A joystick is provided on the Discovery board with the position detected with an ADC.
Here are the positions with the associated ADC level to be detected:
Table 6. Document revision history
Position
Ratio
ADC4 channel 8
Select
0.00
0.00 V
Left
0.20
0.67 V
Down
0.40
1.32 V
Up
0.61
2.01 V
Right
0.80
2.65 V
The black button (B3) located on the top side is the reset of the STM32WBA55CGU7 microcontroller. Refer to
Figure 4.
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Hardware layout and configuration
Table 7 gives the assignment of control ports to the LED indicators.
Table 7. Button and LED control port
Reference
UM3255 - Rev 1
Color
Name
Comment
B1
Blue
Joystick
User button with five positions
B3
Black
Reset
MCU reset
LD1
Tricolor (red, green, and orange)
PW_ST
Power status (refer to Section 7.1 for more detail)
LD2
Tricolor (red, green, and orange)
STLK
ST-LINK LED (refer to Section 7.1)
LD3
Blue
User LED
Driven by GPIO
LD4
Green
5V LED
5V available
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Hardware layout and configuration
7.10
ARDUINO® Uno revision 3 connector
CN8, CN9, CN10, and CN11 are female connectors (SMD component devices) compatible with the ARDUINO®
standard. Most shields designed for ARDUINO® can fit the STM32WBA55G-DK1 Discovery board.
The ARDUINO® connectors on the Discovery board support the ARDUINO® Uno revision 3.
The I/Os of this STM32WBA55CGU7 microcontroller are 5 V tolerant, so no issue with ARDUINO® Uno
compatibility.
Figure 13. ARDUINO® connector location (front view)
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Table 8. ARDUINO® connector pinout
Left connectors
Connector
Pin number
Pin name
Right connectors
MCU pin
Function
MCU pin
Pin name
Pin number
I2C3 SCL
PA6
SCL/D15
10
I2C3 SDA
PA7
SDA/D14
9
Reference
voltage
-
AVDD
8
Ground
-
GND
7
1
NC
-
-
SPI3_SCK/
LED3
PA0
SCK/D13
6
2
IOREF
-
3V3 reference
SPI3_MISO
PB9
MISO/D12
5
3
NRST
NRST
System reset
SPI3_MOSI/
TIM1_CH1
PB8
PWM/MOSI/D11
4
4
3V3
-
3V3
SPI3_NSS/
TIM2_CH1
PA5
PWM/CS/D10
3
5
5V
-
5V
TIM3_CH2
PA9
PWM/D9
2
6
GND
-
Ground
GPIO drives
LD3 by setting
SB2 ON
PB15
D8
1
7
GND
-
Ground
8
VIN
-
Power input
GPIO
PA12
D7
8
TIM3_CH1
PA10
PWM/D6
7
CN9 power
1
A0
PA2
ADC
TIM1_CH2
PA15
PWM/D5
6
2
A1
PA1
ADC
GPIO
PC13
D4
5
3
A2
PA5
ADC
TIM1_CH1
PB3
PWM/D3
4
4
A3
PB9
ADC
GPIO
PB1
D2
3
5
A4
PA7
ADC/I2C3_SDA
UART2_TX
PB0
TX/D1
2
6
A5
PA6
ADC/I2C3_SCL
UART2_RX
PA11
RX/D0
1
Connector
CN8 digital
CN10 digital
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Hardware layout and configuration
CN11 analog
Function
UM3255
Hardware layout and configuration
7.11
STMod+ connector (CN12)
On the STM32WBA55G-DK1 Discovery board, one STMod+ connector is provided to support flexibility in small
form factor applications. The STMod+ connector extends the SPI interface and the spare I/Os for different
peripheral expansions like cellular modems.
The pin assignments are based on the existing STMod+ standard.
The jumper JP2 is used to select UART or SPI. If JP2 is ON, UART is selected. If JP2 is OFF, then SPI is
selected.
Table 9. STMod+ connector (CN12) pinout
UM3255 - Rev 1
Pin
number
Pin names
Alternate pin names
STM32WBA
pin
Function
1
STMOD+.1_UART2_CTS
STMOD+.1_SPI3_NSS
PB15/PA5
UART/SPI
2
STMOD+.1_UART2_TX
STMOD+.1_SPI3_MOSI
PB0/PB8
UART/SPI
3
STMOD+.1_UART2_RX
STMOD+.1_SPI3_MISO
PA11/PB9
UART/SPI
4
STMOD+.1_UART2_RTS
STMOD+.1_SPI3_SCK
PB1/PA0
UART/SPI
5
GND
-
Ground
6
5V
-
Power supply
7
I2C3_SCL
-
PA6
I2C
8
-
-
-
-
9
-
-
-
-
10
I2C3_SDA
-
PA7
I2C
11
STMOD+.1_INT
-
PC13
Interrupt
12
STMOD+.1_RST
-
PA9
Reset
13
STMOD+.1_ADC
-
PA2
ADC (ADC4_IN7)
14
STMOD+.1_TIM
-
PA1
TIM (TIM1_CH1N, TIM3_CH2)
15
5V
-
-
Power supply
16
GND
-
-
Ground
17
STMOD+.1_17
-
PA10
GPIO
18
STMOD+.1_18
-
PA12
GPIO
19
STMOD+.1_19
-
PA15
GPIO
20
STMOD+.1_20
-
PB3
GPIO
page 21/37
UM3255
Hardware layout and configuration
7.11.1
STMod+ switch (U12)
A switch is used on the STMod+ connector to choose SPI or UART on the STMod+ alternate pins
The JP2 jumper drives the switch. The default configuration is set on SPI (JP2 OFF).
To select UART, the jumper JP2 must be assembled.
Table 10. STMod+ switch (U12) configuration
JP2
JP2 OFF(1)
JP2 ON
SPI
ON
OFF
UART
OFF
ON
1. The default configuration is shown in bold.
7.11.2
Switch overview
Table 11. Switch reference table
Reference
Default position
Comment
JP1
OFF
STLINK-V3EC reset, active low
JP2
OFF
Jumper for STMod+ alternate pin selection. Refer to Section 7.11.1.
JP3
[1-2]
Supply selection (5 or 3 V) on Grove connector (CN13)
JP4
5V_STLK
Board power source selection. Refer to Section 7.2.
Jumper for MCU current measurement.
JP5
ON
The MCU current measurement can be performed on JP5. By default, JP5 is ON.
For the current measurement configuration, an ammeter must replace the JP5
jumper.
JP6
JP7
UM3255 - Rev 1
OFF
[1-2]
MCU Boot mode selection
BOOT0 by default low to boot on internal flash
GPIO PA12 is exclusive between the OLED reset pin and the ARDUINO®/STMod+
pin. The JP7 jumper helps with selection.
Set the JP7 jumper to [1‑2] to select OLED reset and to position [2‑3] to select
ARDUINO® or STMod+ pin.
page 22/37
UM3255
Limitations on MB1802
8
Limitations on MB1802
8.1
ARDUINO® and STMod+
8.2
•
ARDUINO® connector is exclusive with STMod+ connector.
•
ARDUINO® ADC_A2 exclusive with ARDUINO® SPI3_NSS on PA5
•
ARDUINO® ADC_A3 exclusive with ARDUINO® SPI3_MOSI on PB8
•
ARDUINO® ADC_A4 and ADC_A5 exclusive with I2C3 on PA6 and PA7
Digital microphone and ARDUINO®/STMod+
The digital microphone is exclusive with ARDUINO® pin D9 on PA9 and D6 on PA10 and STMod+ reset pin and
pin 17.
8.3
ARDUINO® and OLED
ARDUINO® ADC_A3 is exclusive to OLED D/C on PB9.
8.4
ARDUINO® and joystick
The joystick is exclusive to ARDUINO® ADC_A1 on PA1.
UM3255 - Rev 1
page 23/37
UM3255
MB1802 B01 I/O assignment updates
9
MB1802 B01 I/O assignment updates
Table 12. STM32WBA55G-DK1 I/O assignment
UM3255 - Rev 1
QFN48
pinout
Pin name
Main function pinout assignment
Alternate function pinout assignment
1
VSSSMPS
-
-
2
VDDSMPS
-
-
3
VLXSMPS
-
-
4
PB12
MCU.VCP_TX
-
5
PA8
MCU.VCP_RX
-
6
PA7
ARD _ADC.A4
I2C3_SDA
7
PA6
ARD_ADC.A5
I2C3_SCL
8
VDDA
-
-
9
PA5
ARD_ADC.A2
SPI3_NSS
10
PA2
ARD_ADC.A0
-
11
VDD
-
-
12
PA1
ARD_ADC.A1
-
13
PA0
ARD.D13
SPI3_SCK
14
PB9
ARD.D12
SPI3_MISO
15
PB8
ARD.D11_TIM
SPI3_MOSI
16
PC15
32 KHz out
-
17
PC14
32 KHz in
-
18
PC13
STMOD+.1_INT
ARD.D4_INT
19
PB7
Audio.SD_B
-
20
PB6
Audio.SCK_B
-
21
PB5
Audio.FS_B
-
22
VDD
-
-
23
PB4
Audio.MCLK_B
-
24
PB3
STMOD+.1_20
ARD.D3_TIM
25
PA15
ARD.D5_TIM
STMOD+.1_19
26
PA14
MCU.SWCLK
-
27
PA13
MCU.SWDIO
-
28
PA12
ARD.D7_IO
OLED_RST
29
PA11
ARD.D0_RX
-
30
PB2
AUDIO_NRST
-
31
PB1
ARD.D2
STMOD+_UART2_RTS
32
PB0
ARD.D1_TX
STMOD+_UART2_RX
33
PB15
ARD.D8_IO
STMOD+_UART2_CTS
34
PH3
Boot0
OLED.CS
35
VDD
-
-
36
NRST
-
-
37
RF
RF output
-
page 24/37
UM3255
MB1802 B01 I/O assignment updates
UM3255 - Rev 1
QFN48
pinout
Pin name
Main function pinout assignment
Alternate function pinout assignment
38
VDDHPA
-
-
39
VDDANA
-
-
40
VDDRF
-
-
41
OSC_OUT
32 MHz out
-
42
OSC_IN
32 MHz in
-
43
VDDRFPA
-
-
44
VDD
-
-
45
VDD11
-
-
46
PA10
ARD.D6_TIM
Audio.1_D1
47
PA9
ARD.D9_TIM
Audio.1_CK1
48
PB14
Audio.SD_A
-
49
VSS
Exposed pad
-
page 25/37
UM3255
STM32WBA55G-DK1 product information
10
STM32WBA55G-DK1 product information
10.1
Product marking
The stickers located on the top or bottom side of all PCBs provide product information:
•
First sticker: product order code and product identification, generally placed on the main board featuring
the target device.
Example:
Product order code
Product identification
•
Second sticker: board reference with revision and serial number, available on each PCB.
Example:
MBxxxx-Variant-yzz
syywwxxxxx
On the first sticker, the first line provides the product order code, and the second line the product identification.
On the second sticker, the first line has the following format: “MBxxxx-Variant-yzz”, where “MBxxxx” is the board
reference, “Variant” (optional) identifies the mounting variant when several exist, “y” is the PCB revision, and “zz”
is the assembly revision, for example B01. The second line shows the board serial number used for traceability.
Parts marked as “ES” or “E” are not yet qualified and therefore not approved for use in production. ST is not
responsible for any consequences resulting from such use. In no event will ST be liable for the customer using
any of these engineering samples in production. ST’s Quality department must be contacted prior to any decision
to use these engineering samples to run a qualification activity.
“ES” or “E” marking examples of location:
•
•
On the targeted STM32 that is soldered on the board (for an illustration of STM32 marking, refer to the
STM32 datasheet Package information paragraph at the www.st.com website).
Next to the evaluation tool ordering part number that is stuck, or silk-screen printed on the board.
Some boards feature a specific STM32 device version, which allows the operation of any bundled commercial
stack/library available. This STM32 device shows a “U” marking option at the end of the standard part number
and is not available for sales.
To use the same commercial stack in their applications, the developers might need to purchase a part number
specific to this stack/library. The price of those part numbers includes the stack/library royalties.
UM3255 - Rev 1
page 26/37
UM3255
STM32WBA55G-DK1 product information
10.2
STM32WBA55G-DK1 product history
Table 13. Product history
Order
code
Product
identification
Product details
Product change description
Product limitations
MCU:
STM32WBA55G-DK1
•
STM32WBA55CGU7
silicon revision "B"
MCU errata sheet:
DK32WBA55G1$DR1
•
STM32WBA5x device
errata (ES0592)
Initial revision
No limitation
Boards:
•
•
10.3
MB1802-WBA55C-B01
(mezzanine board)
MB1803-WBA55CGA-B01
(MCU RF board)
Board revision history
Table 14. Board revision history
Board reference
Board variant and revision
Board change description
Board limitations
MB1802
(mezzanine board)
WBA55C-B01
Initial revision
No limitation
MB1803
(MCU RF board)
WBA55CGA-B01
Initial revision
No limitation
UM3255 - Rev 1
page 27/37
UM3255
Federal Communications Commission (FCC) and ISED Canada Compliance Statements
11
Federal Communications Commission (FCC) and ISED Canada
Compliance Statements
11.1
FCC Compliance Statement
Identification of products: STM32WBA55CG-DK1
Contains FCC ID: YCP-MB180300
Part 15.19
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Part 15.21
Any changes or modifications to this equipment not expressly approved by STMicroelectronics may cause
harmful interference and void the user's authority to operate this equipment.
Part 15.105
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception which can be determined by turning the equipment off and on,
the user is encouraged to try to correct interference by one or more of the following measures:
•
•
•
•
Note:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Use only shielded cables.
Responsible party (in the USA)
Francesco Doddo
STMicroelectronics, Inc.
200 Summit Drive | Suite 405 | Burlington, MA 01803
USA
Telephone: +1 781-472-9634
UM3255 - Rev 1
page 28/37
UM3255
Federal Communications Commission (FCC) and ISED Canada Compliance Statements
11.2
ISED Compliance Statement
This device complies with FCC and ISED Canada RF radiation exposure limits set forth for general population for
mobile application (uncontrolled exposure). This device must not be collocated or operating in conjunction with
any other antenna or transmitter.
Identification of products: STM32WBA55CG-DK1
Contains FCC ID: YCP-MB180300
Identification du produit : STM32WBA55CG-DK1
Contient sous-ensemble certifié IC : 8976A-MB180300
Compliance Statement
Notice: This device complies with ISED Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
ISED Canada ICES-003 Compliance Label: CAN ICES-3 (B) / NMB-3 (B).
Déclaration de conformité
Avis: Le présent appareil est conforme aux CNR d'ISDE Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d'en compromettre le fonctionnement.
Étiquette de conformité à la NMB-003 d'ISDE Canada : CAN ICES-3 (B) / NMB-3 (B).
RF exposure statement
To satisfy FCC and ISED Exposure requirements for mobile devices, a separation distance of 20 cm or more
should be maintained between the antenna of this device and persons during operation. To ensure compliance,
operation at closer than this distance is not recommended. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
Pour satisfaire aux exigences FCC et ISED concernant l'exposition aux champs RF pour les appareils mobiles,
une distance de séparation de 20 cm ou plus doit être maintenu entre l'antenne de ce dispositif et les personnes
pendant le fonctionnement. Pour assurer la conformité, il est déconseillé d'utiliser cet équipement à une distance
inférieure. Cet émetteur ne doit pas être co-situé ou fonctionner conjointement avec une autre antenne ou un
autre émetteur.
UM3255 - Rev 1
page 29/37
UM3255
RED Compliance Statement
12
RED Compliance Statement
Simplified EU declaration of conformity
Hereby, STMicroelectronics declares that the radio equipment type "STM32WBA55G-DK1" is in compliance with
Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address: www.st.com.
Déclaration de conformité CE simplifiée
STMicroelectronics déclare que l'équipement radioélectrique du type "STM32WBA55G-DK1 " est conforme à la
directive 2014/53/UE.
Le texte complet de la déclaration de conformité EU est disponible à cette adresse: www.st.com.
UM3255 - Rev 1
page 30/37
UM3255
UKCA Compliance Statement
13
UKCA Compliance Statement
SIMPLIFIED UK DECLARATION OF CONFORMITY
Hereby, the manufacturer STMicroelectronics, declares that the radio equipment type “STM32WBA55G-DK1” is in
compliance with the UK Radio Equipment Regulations 2017 (UK S.I. 2017 No. 1206). The full text of the UK
Declaration of Conformity is available at the following internet address: www.st.com.
UM3255 - Rev 1
page 31/37
UM3255
Revision history
Table 15. Document revision history
UM3255 - Rev 1
Date
Revision
22-Mar-2024
1
Changes
Initial release.
page 32/37
UM3255
Contents
Contents
1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1
3
Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Development environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2
Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3
Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5
Safety recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6
5.1
Targeted audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.2
Handling the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
6.1
7
Hardware layout and configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1
8
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Embedded STLINK-V3EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.1
Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.2
STLINK-V3EC firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.3
Using an external debug tool to program and debug the on-board STM32 . . . . . . . . . . . . 12
7.2
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3
Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3.1
HSE clock reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3.2
LSE clock reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4
Reset sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5
Virtual COM port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6
Audio codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7
Onboard MEMS audio sensor omnidirectional digital microphone . . . . . . . . . . . . . . . . . . . . . 17
7.8
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.9
Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.10
ARDUINO® Uno revision 3 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.11
STMod+ connector (CN12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.11.1
STMod+ switch (U12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.11.2
Switch overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Limitations on MB1802 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
8.1
UM3255 - Rev 1
ARDUINO® and STMod+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
page 33/37
UM3255
Contents
8.2
Digital microphone and ARDUINO®/STMod+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.3
ARDUINO® and OLED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.4
ARDUINO® and joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9
MB1802 B01 I/O assignment updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
10
STM32WBA55G-DK1 product information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
11
10.1
Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.2
STM32WBA55G-DK1 product history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.3
Board revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Federal Communications Commission (FCC) and ISED Canada Compliance
Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11.1
FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.2
ISED Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
12
RED Compliance Statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
13
UKCA Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
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List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Codification explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ON/OFF convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
MIPI10 debug connector (CN14) pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TAG footprint (CN15) pinout for TC2050-IDC-NL cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Button and LED control port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
ARDUINO® connector pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STMod+ connector (CN12) pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
STMod+ switch (U12) configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Switch reference table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
STM32WBA55G-DK1 I/O assignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Product history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Board revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
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List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
STM32WBA55G-DK1 top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
STM32WBA55G-DK1 bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
STM32WBA55G-DK1 Discovery kit IoT node board (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STM32WBA55G-DK1 Discovery kit IoT node (bottom view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STM32WBA55G-DK1 Discovery board mechanical drawing (top view, in millimeters) . . . . . . . . . . . . . . . . . . 10
TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5V_USB_STLK selection: JP4 [1-2]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5V_VIN selection from CN17 (VIN): JP4 [3-4] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5V_EXT selection: JP4 [5-6]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5V_USB_CHGR selection: JP4 [7-8] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 13.
ARDUINO® connector location (front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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UM3255 - Rev 1
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