STMicroelectronics NUCLEO-WBA52CG User guide

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UM3103

User manual

STM32WBA Nucleo-64 board (MB1863)

Introduction

NUCLEO-WBA52CG is a Bluetooth® Low Energy wireless and ultra-low-power board embedding a powerful and

ultra‑low‑power radio compliant with the Bluetooth® Low Energy SIG specification v5.3. The ARDUINO® Uno V3 connectivity support and the ST morpho headers allow the easy expansion of the functionality of the

STM32 Nucleo open development platform with a wide choice of specialized shields.

Figure 1. NUCLEO-WBA52CG global view

Picture is not contractual.

UM3103 - Rev 2 - April 2023 For further information contact your local STMicroelectronics sales office.

www.st.com

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UM3103

Features

1 Features

• Ultra-low-power wireless STM32WBA52CG 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 (MB1863): – 2.4 GHz RF transceiver supporting Bluetooth® specification v5.3 – Arm® Cortex® M33 CPU with Arm® TrustZone®, MPU, DSP, and FPU

– Integrated PCB antenna

• Three user LEDs

• Three user and one reset push-buttons

• Board connectors: – USB Micro-B –

ARDUINO® Uno V3 expansion connector

– ST morpho headers for full access to all STM32 I/Os

• Flexible power-supply options: ST-LINK USB V

• On-board STLINK-V3MODS 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

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

or external sources

BUS

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2 Ordering information

To order the NUCLEO-WBA52CG board, refer to Table 1. Additional information is available from the datasheet and reference manual of the target microcontroller.

Order code Board reference Target STM32

NUCLEO-WBA52CG

1. Mezzanine board

2. MCU RF board

2.1 Codification

The meaning of the codification is explained in Table 2.

NUCLEO-WBXXYYRZ Description Example: NUCLEO-WBA52CG

XX MCU series in STM32 32-bit Arm Cortex MCUs STM32WBA series

YY MCU product line in the series STM32WBAx2 product line

STM32 package pin count:

• C for 48 pins

STM32 flash memory size:

• G for 1 Mbyte

Table 1. List of available products

• MB1801

• MB1863

(1)

(2)

Table 2. Codification explanation

UM3103

Ordering information

STM32WBA52CG

48 pins

1 Mbyte

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3 Development 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:

3.2 Development toolchains

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.

•

IAR Systems® - IAR Embedded Workbench

•

Keil® - MDK-ARM

• STMicroelectronics - STM32CubeIDE

On Windows® only.

(1)

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Development environment

®(1)

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4 Conventions

Table 3 provides the conventions used for the ON and OFF settings in the present document.

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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Conventions

Table 3. ON/OFF convention

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5 Safety recommendations

5.1 Targeted audience

This product targets users with at least basic electronics or embedded software development knowledge like engineer, technician, or student.

This board is not a toy and is not suited for use by children.

UM3103

Safety recommendations

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:

• 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, please 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 could be damaged when shorted.

• Do not put any liquid on the board and 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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6 Quick start

This section describes how to start development quickly using NUCLEO-WBA52CG. To use the product, you 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 socketed components must be firmly secured in their sockets.

• Nothing must be loose in the board blister.

The Nucleo board is an easy-to-use development kit to evaluate quickly and start development with an STM32 microcontroller in a UFQFPN48 package.

6.1 Getting started

Follow the sequence below to configure the STM32WBA52CG board and launch the demonstration application (refer to Figure 3 and Figure 5 for component location):

1. Check jumper positions on board: JP2 ON, JP1 on USB_STLK [1-2].

2. Check that switch SW1 is on the 3V3 power supply.

Install ST Bluetooth® Low Energy sensor mobile application on a Bluetooth® Low Energy compatible mobile device from App Store or Google Play.

Connect the Nucleo board to a PC with a USB cable Type-A or USB Type-C® to Micro-B through a USB connector (USB_STLK). Once connected the green LED (LD2) lights up. Refer to the user manual

STLINK-V3MODS and STLINK-V3MINI debugger/programmer tiny probes for STM32 microcontrollers

(UM2502) available at www.st.com.

5. Use ST Bluetooth® Low Energy Sensor mobile application to detect the STM32WBA P2P server (P2PSRV) and connect it. The smartphone application displays the service and characteristics of the device.

6. Pushing the button (B1) on the board toggles the alarm on the smartphone display. On the smartphone, push the lamp to switch ON/OFF the Nucleo board blue LED (LD1).

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Quick start

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7 Hardware layout and configuration

NUCLEO-WBA52CG is designed around the STM32WBA52CG. The design includes a mezzanine board and an MCU RF board. The hardware block diagram in Figure 2 illustrates the connection between STM32WBA52CG

and peripherals (ARDUINO® Uno V3 connectors, ST morpho connector, and embedded ST-LINK).

Figure 3 and Figure 5 help users locate these features on the NUCLEO-WBA52CG board. The mechanical

dimensions of the NUCLEO-WBA52CG product are shown in Figure 6.

Figure 2. Hardware block diagram

NUCLEO-WBA52CG (MB1801+MB1863)

UM3103

Hardware layout and configuration

Three LEDs

Three push-buttons

32 MHz

crystal

32.768 kHz crystal

Reset

push-button

Power board

Power selector

LDO

5 to 3V

ARDUINO

expansion connectors

STM32WBA52

Power selector

STM32WBA52 side

LDO

5 to 3 V

ST morpho

expansion connectors

Filter

matching

ST-LINK side

PCB

antenna

Level shifter

MB1863

UM3103 - Rev 2

External Power Supply (1.8 to 3.3 V)

Optional

LDO

5 to 3 V

External

Power

Supply

(7 to 12 V)

Optional

External

Power

Supply

(5 V)

Optional

5 V ST-LINK

STLINK-V3MODS

STM32WBA52 Debug

RF path GPIOs Power management

DT56190V1

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Figure 3. NUCLEO-WBA52CG PCB top view

PCB antenna

UM3103

Hardware layout and configuration

Digital 8-15 (CN6)

ARDUINO

Power (CN5)

ARDUINO

ST morpho (CN4)

ST morpho (CN3)

Digital 0-7 (CN8)

ARDUINO

Analog (CN7)

5V source selector (JP1)

ARDUINO

MIPI10/STDC14 connector footprint

VDD jumper (JP2)

User push-buttons (B1, B2, and B3) User LEDs (LD1, LD2, and LD3)

Reset push-button (B4)

ST-LINK status LED (LD4)

Figure 4. NUCLEO-WBA52CG PCB details of the MCU RF board

PCB antenna

C12/L1/C13/L2/C14

Matching network and filter

HSE crystal (32 MHz)

STM32WBA52CG (U1)

LSE crystal (32.768 kHz)

UM3103 - Rev 2

MIPI10/STDC14 connector footprint

DT56192V1

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STLINK-V3MODS

USB-C

connector footprint

Hardware layout and configuration

Figure 5. NUCLEO-WBA52CG PCB bottom view

LDO 5V (U3) LDO 3V3 (U4)

(CN9)

(optional)

SW1 ST-LINK USB connector

UM3103

DT56193V1

Note:

The USB-C® connector footprint (CN9) is not available on the MB1801-NoUSB variant.

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Hardware layout and configuration

Figure 6. NUCLEO-WBA52CG mechanical dimensions (in millimeters)

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7.1 Power supply

7.1.1 General description

By default, the STM32WBA52CG embedded on this Nucleo board is supplied by 3V3 but the board proposes a lot of possibilities to supply the module. In fact, at first, the 3V3 can come from ST-LINK USB, ARDUINO®, or ST

morpho connectors. Moreover, STM32WBA52CG can be supplied by an external source (between 1.8 and 3.3 V). Thanks to level shifters, the debug by embedded STLINK is always possible even if the supply voltage of the target is different than 3V3 (ST-LINK supply). Figure 7 shows the power tree. Moreover, this figure also shows the default state of the jumpers and the solder bridges.

NUCLEO-WBA52CG

AVDD (CN11-1)

ARDUINO ST morpho AVDD (CN4-7)

ST morpho 5V_EXT (CN3-6)

ARDUINO ST morpho VIN (CN3-24)

External (CN10-1)

AVDD (CN6-8)

VIN (CN5-8)

5V_USB MCU (CN9)

5V_USB MCU (CN4-8)

SB20

OFF

SB21

OFF SB22

OFF

Figure 7. STM32WBA52CG power tree

JP1 [9-10]

OFF

JP1 [5-6]

LDO_5V

OFF

JP1 [7-8]

OFF

JP1 [3-4]

OFF

JP1 [1-2]

3V3

LDO 3V3

UM3103

Power supply

VDDA/VREF+

SB1

VDD

SW1U4

JP2

STM32WBA52CG

VDD

7.1.2 7 to 12 V power supply

A 7 to 12 V DC power source can power NUCLEO-WBA52CG. There are three accesses for this type of level:

• Pin VIN of the ARDUINO® connector (CN5-8). It is possible to apply until +12 V on this pin or use an ARDUINO® shield, which can deliver this type of voltage on the VIN pin

• Pin VIN of the ST morpho connector (CN3-24). It is possible to apply until +12 V on this pin like for the ARDUINO® connection

• External input (CN10). Be careful, in this case, the states of the jumpers and solder bridge are very important. Verify these states in Table 4.

These sources are connected to a linear low‑drop voltage regulator (U2). The output of this regulator (5 V) is a potential source of the 5V signal (refer to details in the next section).

3V3_STLK

LDO 3V3

5V_STLNK

STLINK-VMODS-

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7.1.3 5 V power supply

A 5 V DC power source can power NUCLEO-WBA52CG. The 5 V can come from several connectors:

• External input (CN10). Be careful, in this case, the states of the jumpers and solder bridge are very important. Refer to Table 4.

• 5V_EXT from ST morpho connector (CN5-6)

• 7-12 V input through the voltage regulator (U2) (refer to Section 7.1.2 7 to 12 V power supply).

The jumper (JP1) allows selecting the 5V source. Table 4 shows the configuration to apply the selected source. Depending on the current needed on the devices connected to the USB port, and the board itself, power

limitations can prevent the system from working as expected. The user must ensure that NUCLEO-WBA52CG is supplied with the correct power source depending on the current needed.

Jumper/solder bridge Setting Configuration

Table 4. Power supply selector (JP1) description

5V sources

MCU

USB

VIN

VEXT

EXT

STLK

NUCLEO-WBA52CG is supplied through the

USB Micro-B receptacle (CN15) (USB_STLNK).

UM3103

Power supply

Default setting

JP1

5V supply source

selector

JP1

5V sources

MCU

USB

VIN

VEXT

EXT

STLK

Not available on variant MB1801-NoUSB.

JP1

5V sources

MCU

USB

VIN

VEXT

EXT

STLK

NUCLEO-WBA52CG is supplied through the pin

8 of the ARDUINO® connector (CN5) or pin 24 of

the ST morpho connector (CN3) or CN10 (refer

to the configuration details in the present Power

supply section).

JP1

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Jumper/solder bridge Setting Configuration

5V sources

MCU

USB

VIN

VEXT

EXT

STLK

NUCLEO-WBA52CG is supplied through CN10

(refer to the configuration details in the present

Power supply section).

UM3103

Power supply

JP1

5V supply source

selector

5V sources

MCU

USB

VIN

VEXT

EXT

STLK

NUCLEO-WBA52CG is supplied through the pin

6 of the ST morpho connector (CN3).

JP1

When 5V_USB_STLINK is used, JP1 is set to [1-2]. The sequence is specific. In the beginning, only STLINKV3MODS is supplied. If the USB enumeration succeeds, the 5V_USB_STLINK power is enabled by asserting the PWR_EN signal from STLINK-V3MODS. This pin is connected to a power switch (TPS2041C) which supplies the rest of the board. This power switch also features a current limitation to protect the PC in case of currents exceeding 300 mA.

JP1

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7.1.4 Current measurement

As the device has got low power features, it can be interesting to measure the current consumed by NUCLEOWBA52CG. To do this measurement easily, there are two possibilities:

1. Measure the supply current of the SoC using an amperemeter in place of the jumper (JP2). In this case, all supply sources can be used except the AVDD coming from the ARDUINO® connector. Figure 8 shows the

configuration.

NUCLEO-WBA52CG

AVDD (CN11-1)

ARDUINO ST morpho AVDD (CN4-7)

ST morpho 5V_EXT (CN3-6)

External (CN10-1)

AVDD (CN6-8)

ARDUINO ST morpho VIN (CN3-24)

VIN (CN5-8)

SB20

SB21

OFF SB22

OFF

5V USB MCU (CN9) 5V USB MCU (CN4 - 8)

OFF

Figure 8. Current measurement with an ammeter

JP1 [9-10]

OFF

LDO 5V

JP1 [5-6]

OFF

JP1 [7-8]

OFF

JP1 [3-4]

OFF

JP1 [1-2]

3V3

LDO 3V3

VDD

SW1U4

JP2

OFF

UM3103

Power supply

VDDA/VREF+

SB1

STM32WBA52CG

VDD

3V3_STLK

LDO 3V3

5V STLNK

STLINK-VMODS-

DT59001V1

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UM3103

Clock sources

2. Use an external power supply with current measurement capability. In this case, the jumper (JP2) must be removed and the supply connected to pin 2 of JP2 (refer to Figure 9). The supply voltage should be between 1V8 and 3V3. AVDD input (CN1-8) must not be used during this measurement.

Figure 9. Current measurement with an external power supply

NUCLEO-WBA52CG

AVDD (CN11-1)

ARDUINO ST morpho AVDD (CN4-7)

ST morpho 5V_EXT (CN3-6)

External (CN10-1)

AVDD (CN6-8)

ARDUINO ST morpho VIN (CN3-24)

VIN (CN5-8)

SB20

SB21

OFF SB22

OFF

5V USB MCU (CN9) 5V USB MCU (CN4 - 8)

OFF

LDO 5V

JP1 [9-10]

OFF

JP1 [5-6]

OFF

JP1 [7-8]

OFF

JP1 [3-4]

OFF

JP1 [1-2]

LDO 3V3

3V3

VDD

SW1U4

External

Power supply

1V8 to 3V3

SB1

JP2

OFF

VDDA/VREF+

STM32WBA52CG

VDD

7.2 Clock sources

7.2.1 HSE clock references

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.

7.2.2 LSE clock references

The accuracy of the low‑speed clock (LSE) of the MCU RF board is committed to a 32.768 kHz crystal oscillator.

7.3

Reset sources

The reset signal of NUCLEO-WBA52CG is active LOW. The internal PU forces the RST signal to a high level. The sources of reset are:

• Reset push-button (B4)

• Embedded STLINK-V3

• ARDUINO® connector (CN5 pin 3), reset from the ARDUINO® board

• ST morpho connector (CN3 pin 14)

3V3_STLK

LDO 3V3

5V STLNK

STLINK-VMODS-

DT59002V1

7.4

UM3103 - Rev 2

Embedded STLINK-V3

The STLINK-V3 programming and debugging tool is integrated into NUCLEO-WBA52CG.

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The features supported on the STLINK-V3 are:

• USB 2.0 high-speed interface

• Probe firmware update through USB

• JTAG communication support up to 21 MHz

• SWD and SWV communication support up to 24 MHz

• 3.0 to 3.6 V application voltage support and 5 V tolerant inputs

• Virtual COM port (VCP) up to 16 Mbps

• Optional drag-and-drop flash memory programming binary files

• Multipath bridge USB to SPI/UART/I2C/CAN/GPIOs For all general information concerning debugging and programming features common between V3 and V2-1

versions, refer to the user manual ST-LINK in-circuit debugger/programmer for STM8 and STM32 microcontrollers (UM0627) at www.st.com.

7.4.1 Drivers

STLINK-V3 requires a dedicated USB driver, which, for Windows 7® and Windows 8® is available from

www.st.com. For Windows 10®, it is not necessary to install the driver. ST-LINK is automatically identified.

In cases the NUCLEO-WBA52CG board is connected to the PC before the driver is installed, some board interfaces might be declared as Unknown in the PC device manager. In this case, the user must install the dedicated driver files and update the driver of the connected device from the device manager, as shown in

Figure 10. USB composite device.

Note: It is preferable to use the USB Composite Device to handle a full recovery.

UM3103

Embedded STLINK-V3

7.4.2 STLINK-V3 firmware upgrade

STLINK-V3 embeds a firmware mechanism for the in‑place upgrade through the USB port. As the firmware might evolve during the lifetime of the STLINK-V3 product (for example new functionalities, bug fixes, support for new microcontroller families), visiting the www.st.com website is recommended before starting to use the NUCLEO-WBA52CG board, then periodically to stay up-to-date with the latest firmware version.

Figure 10. USB composite device

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7.4.3 STLINK-V3 USB connector (CN15)

The main function of this connector is the access to STLINK-V3 embedded on the NUCLEO-WBA52CG for the debugging as explained above. It allows supplying the board (refer to Section 7.1 Power supply). The connector is a standard USB Micro-B connector.

Table 5. ST-LINK USB Micro-B connector (CN15)

Pin Pin name Signal name Function

1 VBUS 5V_USB_ST_LINK VBUS power

2 DM USB_STLK_N DM

3 DP USB_STLK_P DP

4 ID - -

5 GND GND GND

7.4.4 Virtual COM port USART1

STLINK-V3 offers a USB Virtual COM port bridge. This feature allows access to the USART1 of NUCLEOWBA52CG by the USB_STLNK connector. By default, this USART1 interface of NUCLEO-WBA52CG is connected to the VCP1 of the STLINK-V3 MCU (STM32F723IE).

An intermediate connection allows using differently this VCP. On the CN14 connector, both signals (TX and RX) are available, and two solder bridges allow disconnecting the UART coming from the SoC.

UM3103

Embedded STLINK-V3

STM32WBA52CG

LPUART1 RX (PA8/pin 45) Pin 1 STLINK_TX: UART2 TX (PA2/pin 12)

LPUART1 TX (PB12/pin 47) Pin 2 STLINK_RX: UART2 RX (PA3/pin 13)

7.4.5 Virtual COM port LPUART1

It is possible to replace the mass storage interface with a second Virtual COM port. To do so, the solder bridges SB7 and SB8 must be ON. It is also necessary to do a firmware upgrade through STM32CubeProgrammer (refer to the technical note Overview of ST-LINK derivatives (TN1235) at www.st.com.

7.4.6 Level shifter

NUCLEO-WBA52CG has a system for supplying STM32WBA52CG with a different voltage than the ST-LINK. The ST-LINK is always supplied by 3V3 sources. By default, the STM32WBA52CG is supplied by the same voltage value as ST-LINK, but it is possible to supply the SoC with another value. It accepts voltage between 1.8 and 3.3 V trust to a specific component (level shifter). This level shifter assures the voltage conversion between ST-LINK and the SoC. It drives SWD and UART signals connected to the VCP on the ST-LINK.

Table 6. UART interface pinout description

CN14 STM32F723

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7.5 LEDs

7.5.1 Description

Four LEDs on the top side of the Nucleo board help the user during the application development.

UM3103

LEDs

Figure 11. LEDs location

User LED (LD3) User LED (LD2)

User LED (LD1) ST-LINK status LED (LD4)

• LD1: This blue LED is available for user application.

• LD2: This green LED is available for user application.

• LD3: This red LED is available for user application.

• LD4: This LED turns green when a 5V source is available (to select the 5V source, refer to

Section 7.1.3 5 V power supply).

LEDs are also available on the ST-LINK on the bottom side of the MB1801 mezzanine board. Refer to the user manual STLINK-V3MODS and STLINK-V3MINI debugger/programmer tiny probes for STM32 microcontrollers (UM2502) at www.st.com.

DT59003V1

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7.6 Push-buttons

7.6.1 Description

NUCLEO-WBA52CG provides two types of buttons:

• USER1 push-button (B1)

• USER2 push-button (B2)

• USER2 push-button (B3)

• Reset push-button (B4), used to reset the Nucleo board.

UM3103

Push-buttons

Figure 12. Push-button location

User push-button (B1) User push-button (B2) User push-button (B3)

Reset push-button (B4)

7.6.2 Reset push-button

B4 is dedicated to the hardware reset of the NUCLEO board.

7.6.3 User push-buttons

There are three push-buttons available for the user application. They are connected to PA0, PE4, and PA6. It is possible to use with GPIO reading or to wake up the device (only B1).

Note that PA0 is also connected to ARDUINO® and ST morpho connectors as GPIO, depending on the use case that can generate conflict with B1. In this case, it is possible to remove the connection of B1 (SB11 OFF).

Name

USER1 pushbutton (B1). PC13 WKUP1

USER2 pushbutton (B2) PB6 --

USER3 pushbutton (B3) PB7 --

DT59004V1

Table 7. I/O configuration for the physical user interface

I/O Wake-Up available

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7.7 RF I/O stage

The RF output stage is configured by default to use a PCB antenna. The components before the antenna are used for two functions: low-pass filtering the signal and matching the impedance of the circuit and the antenna.

STM32WBA52CG

UM3103

RF I/O stage

Figure 13. RF I/O stage

The components C12, L1, C13, L2, and C14 build the output filter and matching network of the PCB antenna.

7.8

ARDUINO® connectors

7.8.1 Description

On the bottom side of the board, there is an ARDUINO® Uno V3 extension socket. It is built around four standard connectors (CN5, CN6, CN7, and CN8). Most shields designed for ARDUINO® can fit with the Discovery kits to

offer flexibility in small form factor applications.

1.3 nH

1.8 nH

C12

1.5 pF

C13

3.9 pF

C14

2.7 pF

Low pass filter and matching

network of the PCB antenna

Figure 14. ARDUINO® Uno connectors and ARDUINO® shield location

PCB

antenna

DT59005V1

UM3103 - Rev 2

ARDUINO

Power

(CN5)

Analog 0-5

(CN7)

NUCLEO-WB52CG

ARDUINO

NC IOREF NRST 3V3 5V GND GND VIN

A0 A1 A2 A3 A4 A5

Uno shield

D15 D14

AVDD

GND

D13 D12 D11 D10

ARDUINO

Digital 8-15

(CN6)

D9 D8

D7 D6 D5 D4 D3 D2 D1 D0

ARDUINO (CN8)

Digital 0-7

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DT59006V1

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7.8.2 Operating voltage

The ARDUINO® Uno V3 connectors support 5 V, 3.3 V, and VDD for I/O compatibility.

Caution:

Do not supply 3.3 V or 5 V from the ARDUINO® shield. Supplying 3.3 V or 5 V from the ARDUINO® shield might damage the Nucleo board.

Furthermore, if it is necessary to supply the Nucleo board by the ARDUINO® connector, a dedicated pin is available. VIN allows supplying the board directly. To use this feature, refer to Section 7.1.2 7 to 12 V power

supply.

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ARDUINO® connectors

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ARDUINO® connectors

7.8.3

ARDUINO® interface and pinout

Figure 15 shows the position of the ARDUINO® shield when it is plugged into NUCLEO-WBA52CG with the

pinout. The pinout shown in Figure 15 corresponds to standard ARDUINO® naming. To see the correspondence with the STM32, refer to Table 8.

STM32WBA52CG

PA7

PA6

PA2

PA1

PA5/PA8*

PA0/PA3*/PA5*

Vtarget

GPIO11

GPIO12

GPIO17

GPIO18

GPIO21

GPIO22

ARDUINO

IOREF

NRST

3V3

GND

VIN

ARDUINO

Figure 15. ARDUINO® connectors pinout

D15

D14

AVDD

GND

D13

D12

D11

D10

ARDUINO

D5 D4

GPIO

GPIO28

GPIO29

VDDA

GND

GPIO31

GPIO33

GPIO34 GPIO37

GPIO39

GPIO41

GPIO42

GPIO44

GPIO47

GPIO49

GPIO50

GPIO52

GPIO54

GPIO55

STM32WBA52CG

PB2

PB1

PB4 (LD1)

PB3

PA15

PA12

PA9

PB15/PA11*/PB10*

STM32WBA52CG

PB9/PC13*

PB0 PB14

PB13

PB6 (B2)

PB7 (B3)

PB5 (VCP2_TX*)

PA10 (VCP2_RX*)

CN5

CN7GPIO

ARDUINO

connector description

(*) Optional, need to change

state of solder bridges

CN6 ARDUINO

CN8 GPIO

STM32WBA52CG pin name

GPIO ARDUINO

signal name

Power ST morpho pin number Not connected (nc)

DT59007V1

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Page 24

ARDUINO® connectors

Table 8. Pinout of the ARDUINO® connectors

Connector Pin number Signal name STM32 port Comment

1 NC - NC (reserved for tests)

2 3V3 (IOREF) - IOREF 3V3

3 NRST NRST NRST

CN5

CN7

CN8

CN6

1. Optional need to change the state of solder bridges.

4 3V3 - 3V3

5 5V - 5V

6 GND - GND

7 GND - GND

8 VIN - External supply input (+12 V)

1 A0 PA7 ADC1_IN9

2 A1 PA6 ADC1_IN11

3 A2 PA2 ADC1_IN6

4 A3 PA1 ADC1_IN5

(1)

/PA5

(1)

5 A4

6 A5

PA5/PA8

PA0/PA3

1 ARD_D0 PA10 LPUART1_RX

2 ARD_D1 PB5 LPUART1_TX

3 ARD_D2 PB7 GPIO

4 ARD_D3 PB6 GPIO

5 ARD_D4 PB13 GPIO/LPTIM2_IN1

6 ARD_D5 PB14 GPIO/TIM2_CH4

7 ARD_D6 PB0 GPIO/TIM1_CH1

(1)

/PB10

(1)

8 ARD_D7

1 ARD_D8

PB9/PC13

PB15/PA11

2 ARD_D9 PA9 GPIO/TIM2_CH1

3 ARD_D10 PA12 SPI1_NSS

4 ARD_D11 PA15 SPI1_MOSI

5 ARD_D12 PB3 SPI1_MISO

6 ARD_D13 PB4 SPI1_SCK/TIM2_CH1

7 GND - GND

8 AVDD - VDDA

9 ARD_D14 PB1 I2C1_SDA

10 ARD_D15 PB2 I2C1_SCL

UM3103

ADC1_IN7

ADC1_IN8

GPIO

UM3103 - Rev 2

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Page 25

7.9 ST morpho connectors

7.9.1 ST morpho interface and pinout

The ST morpho connectors (CN3 and CN4) are male pin headers accessible on both sides of the board. All signals and power pins of the MCU are available on the ST morpho connectors. An oscilloscope, logical analyzer, or voltmeter can also probe these connectors.

Figure 16. Pinout of ST morpho connectors

UM3103

ST morpho connectors

PH3 (BOOT0)

PA13 (JTMS/SWDIO)

PA14(JTCLK/SWCLK)

PB11 (LD2)

PC14 (OSC32_IN)

PC15 (OSC32_OUT)

OSC_IN

OSC_OUT

PA8 (VCP1_RX)

PB12 (VCP1_TX)

STM32WBA52CG pin name

GPIO0

GPIO1

VDD

GPIO3

GPIO5

GPIO6

GPIO8

GPIO9

GPIO10

GND

GPIO13

GPIO14

GPIO15

GPIO16

GPIO19

GPIO20

VBAT

GPIO23

GPIO24

CN3

ST morpho

10 12

GPIO2

GPIO4

5V_EXT

GND

IOREF

Vtarget

NRST

3V3

GND

VIN

GPIO7

GPIO11

GPIO12

GPIO17

GPIO18

GPIO21

GPIO22

GPIO ARDUINO

PB9

PA7

PA6

PA2

PA1

PA5/PA 8*

PA0/PA3*/PA5*

ST morpho

connectors description

(*) Optional, need to change

state of solder bridges

signal name

PB2

PB1

PB3

PA9

PB0

GPIO

GPIO26

GPIO28

GPIO29

GPIO31

GPIO33

GPIO34

GPIO37

GPIO39

GPIO41

GPIO42

GPIO44

GPIO47

GPIO49

GPIO50

GPIO52

GPIO54

GPIO55

STM32WBA52CG

PB4 (LD1)

PA15

PA12

PB15/PA11*/PB10*

PB9/PC13*

PB14

PB13

PB6 (B2)

PB7 (B3)

PB5 (VCP2_TX*)

PA10 (VCP2_RX*)

Power ST morpho pin number Not connected (nc)

D15

D14

VDDA

GND

D12

D11

D10

ST morpho

D13

D6 D5

CN4

GPIO

GPIO25

GPIO27

GPIO30

5V_USB_MCU

GPIO32

12 12

GPIO35

GPIO36

GPIO38

GPIO40

GND

GPIO43

GPIO45

GPIO46

GPIO48

GPIO51

GND

GPIO53

GPIO56

GPIO57

STM32WBA52CG

PB4 (LD1)

PB3 (SWO*)

PA0*/PA15* (JTDI*)

PB10

PA12*

PA11

PB8*/PB15*

PB6 (B2)

PB7 (B3)

PC13 (B1)

PB8 (LD3)

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Page 26

ST morpho connectors

Table 9. Pinout of the ST morpho connectors

CN3 CN4

number

1. Optional, need to change the state of solder bridges.

STM32WBA52CG

pin name

number

STM32WBA52CG

pin name

number

STM32WBA52CG

pin name

number

STM32WBA52CG

1 NC 2 PB9 1 NC 2 NC

3 NC 4 NC 3 PB2 4 NC

5 VDD 6 5V_EXT 5 PB1 6 NC

7 BOOT0 8 GND 7 VDDA 8 5V_USB_MCU

9 PA13 10 NC 9 GND 10

PB3/SWO

11 PA14 12 IOREF 11 PB4 12 NC

13 NC 14 NRST 13 PB3 14 NC

15 NC 16 3V3 15 PA15 16

PA0/PA15

17 NC 18 5V 17 PA12 18 PB10

19 GND 20 GND 19 PA9 20 GND

21 NC 22 GND 21

23 PB11 24 VIN 23

PB15/PA11 PB10

PB9/PC13

25 PC14 26 NC 25 PB0 26

(1)

24 PA11

NC/PA12

NC/PB8

27 PC15 28 PA7 27 PB14 28 NC

29 OSC_IN 30 PA6 29 PB13 30 PB6

31 OSC_OUT 32 PA2 31 PB6 32 GND

33 VBAT 34 PA1 33 PB7 34 PB7

35 PA8 36 PA5 35 PB5 36 PC13

(1)

37 PB12 38

PA0/PA3

/PA5

(1)

37 PA10 38 PB8

UM3103

pin name

(1)

/JTDI

(1)

/PB15

(1)

UM3103 - Rev 2

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Page 27

7.10 MCU RF board interface and pinout

The ST-MCU RF board connectors (CN1 and CN2) are accessible on the top side of the board. They are used to plug the MCU RF board into the mezzanine board.

Figure 17. Pinout of the MCU RF board connectors

UM3103

MCU RF board interface and pinout

GPIO14

PH3 (BOOT0)

PA13 (JTMS/SWDIO)

PA14 (JTCLK/SWCLK)

PB11 (LD2)

PC14 (OSC32_IN)

PC15 (OSC32_OUT)

OSC_IN

OSC_OUT

PA8 (VCP1_RX)

PB12 (VCP1_TX)

STM32WBA52CG pin name

GND

GPIO3

GPIO5 GPIO6

GND

GPIO14

GND

GPIO15 GPIO16

GND

GPIO19 GPIO20

GPIO23 GPIO24

GND

MCU RF board

1 2

3 4

5 6 7 8 9 10

11 12

13 14 15 16 17 18

19 20

21 22

23 24 25 26

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

43 44 45 46 47 48 49 50

CN1

VDD1 nc

GND

GPIO2

PB9

nc NRST

GND

VDD3

VDDA GND

GPIO11

GND

VDD4 nc

GND

A2 A3

GND

A4 A5

GND

nc nc

PA7 PA6

GPIO12

PA2

GPIO17 GPIO18

PA1

PA5/PA8*

GPIO21 GPIO22

PA0/PA3*/PA5*

GPIO ARDUINO

MCU RF board

connectors description

GPIO15

(*) Optional, need to change

state of solder bridges

signal name

CN2

MCU RF board

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

GND nc

nc GND

GPIO30 GPIO32

GND

GPIO38 GPIO40

GND

GPIO43

GPIO45

GND

GPIO46

GND

GPIO51

GPIO53

GND

GPIO56 GPIO57

GND

PB4 (LD1) PB3 (SWO*)

PA0*/PA15* (JTDI*) PB10

PA12*

PA11

PB8*/PB15*

PB6 (B2) PB7 (B3)

PC13 (B1)

PB8 (LD3)

nc nc

D15

GPIO28

PB2 PB1

PB4 (LD1)

PB3

PA15

PA12

PB15/PA11*/PB10*

PB5 (VCP2_TX*)

PA10 (VCP2_RX*)

Power ST morpho pin number Not connected (nc)

PA9

PB9/PC13*

PB0

PB14

PB13 PB6 (B2) PB7 (B3)

GPIO29 GPIO31 GPIO33 GPIO34

GPIO37 GPIO39 GPIO41 GPIO42 GPIO44

GPIO47 GPIO49 GPIO50 GPIO52

GPIO54 GPIO55

D14 D13 D12 D11

D10 D9 D8 D7

GPIO

D6 5

D5 D4 D3 D2 D1 D0

VDD15

DT59009V1

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Page 28

MCU RF board interface and pinout

Table 10. Pinout of the MCU RF board connectors

CN1 CN2

number

1. Optional, need to change the state of solder bridges.

STM32WBA52CG

pin name

number

STM32WBA52CG

pin name

number

STM32WBA52CG

pin name

number

1 GND 2 VDD1 1 NC 2 GND

3 NC 4 NC 3 NC 4 NC

5 NC 6 GND 5 NC 6 NC

7 GND 8 PB9 7 PB2 8 GND

9 BOOT0 10 NC 9 PB1 10 PB4

11 NC 12 NRST 11 PB4 12

13 PA13 14 GND 13 PB3 14 GND

15 PA14 16 NC 15 PA15 16 NC

17 GND 18 VDD3 17 NC 18 NC

19 NC 20 VDDA 19 NC 20 GND

21 NC 22 GND 21 PA12 22

23 NC 24 PA7 23 PA9 24 PB10

25 GND 26 PA6 25

27 NC 28 GND 27

PB15/PA11 PB10

PB9/PC13

(1)

26 GND

29 PB11 30 VDD4 29 PB0 30 PA11

31 GND 32 NC 31 NC 32 GND

33 PC14 34 GND 33 NC 34

35 PC15 36 PA2 35 PB14 36 NC

37 GND 38 PA1 37 PB13 38 GND

39 OSC_IN 40 GND 39 PB6 40 PB6

(1)

/PA5

41 PB7 42 PB7

(1)

43 PB5 44 GND

41 OSC_OUT 42

43 NC 44

PA5/PA8

PA0/PA3

45 PA8 46 GND 45 PA10 46 PC13

47 PB12 48 NC 47 NC 48 PB8

49 GND 50 NC 49 VDD15 50 GND

UM3103

STM32WBA52CG

pin name

(1)

/PB15

(1)

/JTDI

PB3/SWO

PA0/PA15

NC/PA12

NC/PB8

(1)

UM3103 - Rev 2

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Page 29

7.11 MIPI10/STDC14 connector pinout

The MIPI10 and STDC14 connectors are compatible as STDC14 is an extension of the MIPI10 connector.

Figure 18. Pinout of the MIPI10/STDC14 connector (CN3 of the MCU RF board)

UM3103

MIPI10/STDC14 connector pinout

MIPI10/STDC14

14 2

Table 11. Pinout of the MIPI10/STDC14 connector (CN3 of the MCU RF board)

STDC14 pin #

1 -

2 -

3 1

4 2 T_JTMS/T_SWDIO I/O

5 3 GND S

6 4 T_JCLK/T_SWCLK O

7 5 GND S

8 6

9 7 T_JCLK O

10 8

11 9 GNDDetect O

12 10 T_NRST O

13 - T_VCP_RX O

14 - T_VCP_TX I

MIPI10 pin # Pin description Type

Reserved

T_VCC

T_JTDO/T_SWO

T_JTDI/NC

(1)

(2)

(3)

(4)

113

DT59010V1

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8 NUCLEO-WBA52CG product information

8.1 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.

UM3103

NUCLEO-WBA52CG product information

UM3103 - Rev 2

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Page 31

8.2 NUCLEO-WBA52CG product history

Table 12. Product history

UM3103

NUCLEO-WBA52CG product history

Order

code

NUCLEO-WBA52CG

Product

identification

NUWBA52CG$DT1

NUWBA52CG$DT2

Product details Product change description Product limitations

MCU: STM32WBA52CGU6 silicon revision "Z"

MCU errata sheet:

STM32WBA52xx device errata

(ES0592)

Boards:

• MB1801-NoUSB-A01 (Mezzanine board)

• MB1863-WBA52CG-A03 (MCU RF board)

MCU: STM32WBA52CGU6 silicon revision "Z"

MCU errata sheet:

STM32WBA52xx device errata

(ES0592)

Boards:

• MB1801-NoUSB-B01 (Mezzanine board)

• MB1863-WBA52CG-A03 (MCU RF board)

8.3 Board revision history

Initial revision No limitation

Upgrade of MB1801 and hardware flow control added on VCP2.

No limitation

Table 13. Board revision history

Board reference Board variant and revision Board change description Board limitations

MB1801

(Mezzanine board)

MB1863

(MCU RF board)

MB1801-NoUSB-A01 Initial revision No limitation

MB1801-NoUSB-B01

MB1863-WBA52CG-A03 Initial revision No limitation

Added the VCP2 possibility with hardware flow control (RTS/CTS)

No limitation

UM3103 - Rev 2

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Page 32

UM3103

Federal Communications Commission (FCC) and ISED Canada Compliance Statements

9 Federal Communications Commission (FCC) and ISED Canada

Compliance Statements

9.1 FCC Compliance Statement

Identification of products: NUCLEO-WBA52CG. FCC ID: YCP-MB1863000

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:

• 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.

9.2

Warning: The demonstration on the board has an RF output power of 0 dBm by default. It is possible

to change the RF output power through ST software. However, this certification is only valid for a maximum RF output power of +7.5 dBm (programmed). This board does not meet the requirement to be considered compliant beyond this power.

Responsible party (in the USA)

Terry Blanchard Americas Region Legal | Group Vice President and Regional Legal Counsel, The Americas STMicroelectronics, Inc. 750 Canyon Drive | Suite 300 | Coppell, Texas 75019 USA Telephone: +1 972-466-7845

ISED Compliance Statement

This radio transmitter (8976A-MB1863000) has been approved by ISED Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

Le présent émetteur radio (8976A-MB1863000) a été approuvé par ISDE Canada pour fonctionner avec les types d'antenne énumérés ci-dessous et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur.

UM3103 - Rev 2

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Page 33

UM3103

ISED Compliance Statement

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

This device complies with ISED radiation exposure limits set forth for general population. This device must be installed to provide a separation distance of at least 20cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

Le présent appareil est conforme aux niveaux limites d’exigences d’exposition RF aux personnes définies par ISDE. L’appareil doit être installé afin d’offrir une distance de séparation d’au moins 20cm avec les personnes et ne doit pas être installé à proximité ou être utilisé en conjonction avec une autre antenne ou un autre émetteur.

Warning: The demonstration on the board has an RF output power of 0 dBm by default. It is possible

UM3103 - Rev 2

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Page 34

10 RED Compliance Statement

Déclaration de conformité CE simplifiée STMicroelectronics déclare que l'équipement radioélectrique du type " NUCLEO-WBA52CG " est conforme à la

directive 2014/53/UE. Bande de fréquence utilisée en transmission et puissance maximale rayonnée dans cette bande :

• Bande de fréquence : 2400-2483.5 MHz (Bluetooth®)

• Puissance maximale : 4 mW p.i.r.e Simplified EC compliance statement Hereby, STMicroelectronics declares that the radio equipment type "NUCLEO-WBA52CG" is in compliance with

Directive 2014/53/EU. Frequency range used in transmission and maximal radiated power in this range:

•

Frequency range: 2400-2483.5 MHz (Bluetooth®)

• Maximal power: 4 mW e.i.r.p

UM3103

RED Compliance Statement

UM3103 - Rev 2

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Page 35

Revision history

Table 14. Document revision history

Date Revision Changes

14-Mar-2023 1 Initial release.

Updated:

4-Apr-2023 2

• Two links in Features

• New product in Table 12

• New board in Table 13

UM3103

UM3103 - Rev 2

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Page 36

UM3103

Contents

1 Features...........................................................................2

2 Ordering information ..............................................................3

2.1 Codification ...................................................................3

3 Development environment .........................................................4

3.1 System requirements ...........................................................4

3.2 Development toolchains .........................................................4

4 Conventions.......................................................................5

5 Safety recommendations ..........................................................6

5.1 Targeted audience..............................................................6

5.2 Handling the board .............................................................6

6 Quick start ........................................................................7

6.1 Getting started .................................................................7

7 Hardware layout and configuration.................................................8

7.1 Power supply .................................................................12

7.1.1 General description ......................................................12

7.1.2 7 to 12 V power supply ...................................................12

7.1.3 5 V power supply .......................................................13

7.1.4 Current measurement ....................................................15

7.2 Clock sources ................................................................16

7.2.1 HSE clock references ....................................................16

7.2.2 LSE clock references ....................................................16

7.3 Reset sources ................................................................16

7.4 Embedded STLINK-V3 .........................................................16

7.4.1 Drivers ...............................................................17

7.4.2 STLINK-V3 firmware upgrade ..............................................17

7.4.3 STLINK-V3 USB connector (CN15)..........................................18

7.4.4 Virtual COM port USART1 ................................................18

7.4.5 Virtual COM port LPUART1 ...............................................18

7.4.6 Level shifter ...........................................................18

7.5 LEDs ........................................................................19

7.5.1 Description ............................................................19

7.6 Push-buttons .................................................................20

7.6.1 Description ............................................................20

7.6.2 Reset push-button.......................................................20

7.6.3 User push-buttons.......................................................20

UM3103 - Rev 2

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Page 37

UM3103

Contents

7.7 RF I/O stage..................................................................21

7.8 ARDUINO® connectors ........................................................21

7.8.1 Description ............................................................21

7.8.2 Operating voltage .......................................................22

7.8.3 ARDUINO® interface and pinout ............................................23

7.9 ST morpho connectors .........................................................25

7.9.1 ST morpho interface and pinout ............................................25

7.10 MCU RF board interface and pinout ..............................................27

7.11 MIPI10/STDC14 connector pinout ...............................................29

8 NUCLEO-WBA52CG product information..........................................30

8.1 Product marking ..............................................................30

8.2 NUCLEO-WBA52CG product history .............................................31

8.3 Board revision history ..........................................................31

9 Federal Communications Commission (FCC) and ISED Canada Compliance

Statements .......................................................................32

9.1 FCC Compliance Statement ....................................................32

9.2 ISED Compliance Statement ....................................................32

10 RED Compliance Statement.......................................................34

Revision history .......................................................................35

List of tables ..........................................................................38

List of figures..........................................................................39

UM3103 - Rev 2

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Page 38

UM3103

List of tables

Table 1. List of available products...............................................................3

Table 2. Codification explanation ...............................................................3

Table 3. ON/OFF convention ..................................................................5

Table 4. Power supply selector (JP1) description ................................................... 13

Table 5. ST-LINK USB Micro-B connector (CN15) .................................................. 18

Table 6. UART interface pinout description ....................................................... 18

Table 7. I/O configuration for the physical user interface .............................................. 20

Table 8. Pinout of the ARDUINO® connectors ..................................................... 24

Table 9. Pinout of the ST morpho connectors...................................................... 26

Table 10. Pinout of the MCU RF board connectors ...................................................28

Table 11. Pinout of the MIPI10/STDC14 connector (CN3 of the MCU RF board) .............................. 29

Table 12. Product history .................................................................... 31

Table 13. Board revision history ................................................................31

Table 14. Document revision history .............................................................35

UM3103 - Rev 2

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Page 39

UM3103

List of figures

Figure 1. NUCLEO-WBA52CG global view .......................................................1

Figure 2. Hardware block diagram .............................................................8

Figure 3. NUCLEO-WBA52CG PCB top view......................................................9

Figure 4. NUCLEO-WBA52CG PCB details of the MCU RF board .......................................9

Figure 5. NUCLEO-WBA52CG PCB bottom view .................................................. 10

Figure 6. NUCLEO-WBA52CG mechanical dimensions (in millimeters) ................................... 11

Figure 7. STM32WBA52CG power tree......................................................... 12

Figure 8. Current measurement with an ammeter ..................................................15

Figure 9. Current measurement with an external power supply ......................................... 16

Figure 10. USB composite device..............................................................17

Figure 11. LEDs location....................................................................19

Figure 12. Push-button location ............................................................... 20

Figure 13. RF I/O stage.....................................................................21

Figure 14.

Figure 15.

Figure 16. Pinout of ST morpho connectors.......................................................25

Figure 17. Pinout of the MCU RF board connectors ................................................. 27

Figure 18. Pinout of the MIPI10/STDC14 connector (CN3 of the MCU RF board) .............................29

ARDUINO® Uno connectors and ARDUINO® shield location ...................................21

ARDUINO® connectors pinout ........................................................ 23

UM3103 - Rev 2

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Page 40

UM3103

IMPORTANT NOTICE – READ CAREFULLY

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UM3103 - Rev 2

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