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UM3418
User manual
STM32WL3x Nucleo-64 boards (MB1801 and MB2029)
Introduction
The STM32WL3x Nucleo-64 boards based on the MB1801 mezzanine board and MB2029 MCU RF board
(NUCLEO-WL33CC1
and
NUCLEO-WL33CC2
order codes) embed the
STM32WL33CCV6
sub-GHz application processor. This high‑performance
and low‑power application processor can operate in 433, 868, and 915 MHz bands.
®
The ARDUINO
Uno V3 connectivity support and the ST morpho headers provide an easy means of expanding the functionality
of the STM32 Nucleo open development platform with a wide choice of specialized shields.
The STM32WL3x Nucleo-64 boards are supplied with a dedicated software package, HAL library, and various packaged
software examples available with the
STM32CubeWL3
MCU Package.
The boards are declined in two product variants with dedicated front ends tuned for specific frequency bands.
Figure 1.
NUCLEO-WL33CCx global view
Picture is not contractual.
UM3418 - Rev 1 - November 2024
www.st.com
For further information contact your local STMicroelectronics sales office.
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Summary of Contents for ST Nucleo-64 STM32WL3 Series
- Page 1 ® The ARDUINO Uno V3 connectivity support and the ST morpho headers provide an easy means of expanding the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields. The STM32WL3x Nucleo-64 boards are supplied with a dedicated software package, HAL library, and various packaged...
- Page 2 ® – ARDUINO Uno V3 expansion connector – ST morpho extension pin headers for full access to all MCU I/Os • Flexible power-supply options: ST-LINK USB V or external sources • On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port •...
- Page 3 UM3418 Ordering information Ordering information To order the STM32WL3x Nucleo-64 boards, 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 references Target STM32 Differentiating feature Front end optimized for •...
- Page 4 STMicroelectronics - STM32CubeIDE 1. On Windows ® only. CAD resources All board design resources, including schematics, CAD databases, manufacturing files, and the bill of materials, are available from the NUCLEO-WL33CC1 NUCLEO-WL33CC2 product pages at www.st.com. UM3418 - Rev 1 page 4/39...
- Page 5 UM3418 Conventions Conventions Table 3 provides the conventions used for the ON and OFF settings in the present document. Table 3. ON/OFF convention Convention Definition Jumper JPx ON Jumper fitted Jumper JPx OFF Jumper not fitted Jumper JPx [1-2] Jumper fitted between Pin 1 and Pin 2 Solder bridge SBx ON SBx connections closed by 0 Ω...
- Page 6 UM3418 Safety recommendations Safety recommendations 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. Handling the board This product contains a bare printed circuit board.
- Page 7 The green LD4 (5V) and LD5 (ST-LINK power status), and the red LD6 (COM) LEDs light up. For more information about ST-LINK PWR and COM LEDs, refer to the technical note Overview of ST-LINK derivatives (TN1235). 5. Use STM32CubeWiSE-RadioExplorer to configure radio parameters, and start radio emission or reception.
- Page 8 Figure 2 illustrates the connection between STM32WL33CCV6, ® peripherals (ARDUINO Uno V3 connectors, ST morpho connector, and embedded ST-LINK), and RF front end. Figure 3 Figure 5 help users locate these features on the board. The mechanical dimensions of the...
- Page 9 (CN4) RF shield ARDUINO® Power ARDUINO® Digital (CN5) (CN6) ARDUINO® Digital (CN8) ARDUINO® Analog (CN7) ST-LINK COM status LED (LD6) IDD jumper (JP2) ST-LINK power status LED 5V source selector (LD5) (JP1) User push-buttons User LEDs (B1, B2, and B3)
- Page 10 UM3418 Hardware layout and configuration Figure 5. NUCLEO-WL33CCx bottom view LVDO 3V3 LDO 5V (U4) (U3) Embedded STLINK V3 Switch external/internal power source (SW1) ® USB-C connector (CN15) Figure 6. NUCLEO-WL33CCx mechanical dimensions (in millimeters) UM3418 - Rev 1 page 10/39...
- Page 11 (CN5-8). It is possible to apply up to +12 V on this pin or use an ® ARDUINO shield, which can deliver this type of voltage. • Pin VIN of the ST morpho connector (CN3-24). It is possible to apply up to +12 V on this pin like for the ® ARDUINO connection. •...
- Page 12 Refer to the configuration details in the present VEXT/5V_EXT Power supply section. VBUS_STLINK NUCLEO-WL33CCx is supplied through CN10 or through pin 6 of the ST morpho connector (CN3). JP1 [7-8] Refer to the configuration details in the present Power supply section. NUCLEO-WL33CCx is directly supplied by the ®...
- Page 13 SW1 default setting ® 2. Position [3-2]: The external sources might be applied on VEXT on CN10, ST morpho 5VEXT, or ARDUINO VIN. The externally applied voltages must be in the range of STM32WL33CC supply: 1.7 to 3.6 V. Refer to solder bridge configurations of SB21, SB22, and SB23 given your use case.
- Page 14 Solder an SB resistor on the R1 footprint of the MCU RF board. Note that this is not ideal, as the STM32WL33CC does not boot on internal flash memory until the SB is OFF. • Inserting a jumper between pins 5-7 of the ST morpho connector CN3, as shown in Figure Figure 9.
- Page 15 Driver installation is not mandatory for Windows 10 and above but assigns an ST-specific name to the ST-LINK 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). 7.5.3 STLINK-V3EC firmware upgrade ®...
- Page 16 3V3 source with a dedicated LDO. Level shifters avoid conflict when using a different target voltage. Level shifters ensure the voltage conversion between ST-LINK and the SoC. It drives SWD and UART signals connected to ST-LINK.
- Page 17 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). LD5 and LD6 are ST-LINK power status and communication LEDs. For more information about ST-LINK PWR and COM LEDs, refer to the technical note Overview of ST-LINK derivatives (TN1235). UM3418 - Rev 1...
- Page 18 ® Note that PA0 is also connected to the ARDUINO and ST morpho connectors as a GPIO, depending on the use case that can generate conflict. In this case, it is possible to remove the connection to push-buttons. Refer to...
- Page 19 UM3418 Hardware layout and configuration RF stage The RF front end is designed to match and filter RF on three different paths: TX, RX, and RX_WAKEUP. NUCLEO-WL33CCx embeds an IPD (integrated passive device) that combines both TX and RX matching and filtering in a tiny package.
- Page 20 UM3418 Hardware layout and configuration 7.8.1 RX_LPAWUR STM32WL33CC features a low‑power autonomous wake-up receiver (LPAWUR) meant to receive dedicated wake‑up frames during a deep-sleep MCU state. The LPAWUR can work on three different frequency bands. By default, this feature is not connected to the antenna path. C3 is OFF. BOM changes might be needed depending on the frequency band used, as shown in Table Table 8.
- Page 21 UM3418 Hardware layout and configuration ® ARDUINO connectors 7.9.1 Description ® On the bottom side of the board, there is an ARDUINO Uno V3 connector. It is built around four standard ® connectors (CN5, CN6, CN7, and CN8). Most shields designed for ARDUINO can fit with the Nucleo kits to offer flexibility in small form factor applications.
- Page 22 ® Table 9. ARDUINO Uno V3 connectors pinout Left connectors Right connectors Connector Pin name MCU pin Function Function MCU pin Pin name Connector number number I2C2_SCL ARD_D15 I2C2_SDA ARD_D14 AVDD SPI1_SCK PB11 ARD_D13 CN6 Digital IOREF (V_TARGET) SPI1_MISO ARD_D12 (IOREF) NRST NRST...
- Page 23 ST morpho interface and pinout The ST morpho connectors (CN3 and CN4) are male pin headers accessible on both sides of the board. All MCU signals are available on the ST morpho connectors. An oscilloscope, logical analyzer, or voltmeter can also probe these connectors.
- Page 24 VCP1_RX PA15 PVD_VIN PB14 VCP1_TX ADC_VINP3/LD3 1. This is optional and needs to change the state of solder bridges. Table 11. Pinout of the ST morpho connector (CN4) Main function MCU pin Main function MCU pin number number I2C2_SCL I2C2_SDA...
- Page 25 7.11.1 MB1801 mezzanine board solder bridges MB1801 solder bridges allow different configurations of power trees, user LEDs and buttons, and ST-LINK. Some of the configurations are not relevant for NUCLEO-WL33CCx. MB1801 solder bridges are all located on the bottom side.
- Page 26 VCP2 of ST-LINK is connected to target MCU CTS. SB27 VCP2 is disconnected from target MCU CTS. ST-LINK I/O can control Boot0 of the target MCU BOOT0 SB28 Boot0 of the target MCU is disconnected from ST-LINK ST-LINK bridge I/O controls the target MCU reset.
- Page 27 Hardware layout and configuration Solder Solder bridge control State Description bridge (SB) 5V_EXT of ST morpho connector CN3 is connected to VEXT on JP1. 5VEXT SB33 5V_EXT is disconnected from the power tree. 1. The default configuration is in bold.
- Page 28 The TX_HP pin is disconnected from the RF TX path. TX pin is connected to the RF TX path. TX pin is disconnected from the RF TX path. OSC32_IN is output on the ST morpho connector CN3. OSC32_IN is disconnected. X1-LSE OSC32_OUT is output on the ST morpho connector CN3.
- Page 29 • 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.
- Page 30 UM3418 NUCLEO-WL33CCx product information NUCLEO-WL33CCx product history Table 14. Product history Order Product Product details Product change description Product limitations code identification MCU: STM32WL33CCV6 silicon revision "Z" MCU errata sheet: STM32WL33xx device errata (ES0612) NUWL33CC1$CR1 Initial revision No limitation Boards: •...
- Page 31 UM3418 Federal Communications Commission (FCC) and ISED Canada Compliance Statements Federal Communications Commission (FCC) and ISED Canada Compliance Statements FCC Compliance Statement FCC Compliance Statement Identification of products: NUCLEO-WL33CC1. FCC ID: YCP-MB202900 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.
- Page 32 UM3418 Federal Communications Commission (FCC) and ISED Canada Compliance Statements 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.
- Page 33 Le soussigné, STMicroelectronics, déclare que l'équipement radioélectrique du type Nucleo-WL33CC1 et Nuceo- WL33CC2 sont conformes à la directive 2014/53/UE. Le texte complet de la déclaration UE de conformité est disponible à l'adresse internet suivante : www.st.com. Bande de fréquence utilisée en transmission et puissance max rayonnés dans ces bandes : Nucleo-WL33CC1 : Bande de fréquence : 869.4-869.65 MHz...
- Page 34 UM3418 Revision history Table 16. Document revision history Date Revision Changes 20-Nov-2024 Initial release. UM3418 - Rev 1 page 34/39...
- Page 35 UM3418 Contents Contents Features................2 Ordering information .
- Page 36 ST morpho interface and pinout ........
- Page 37 Pinout of the ST morpho connector (CN3) ........
- Page 38 Boot0 jumper location on ST morpho connector (CN3)........
- Page 39 ST’s terms and conditions of sale in place at the time of order acknowledgment. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of purchasers’...
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