Affordable and flexible platform to ease prototyping using a STM32WB55RGVx microcontroller.


The NUCLEO-WB55RG is a multi-protocol wireless and ultra-low-power device embedding a powerful and ultra-low-power radio compliant with the Bluetooth® Low Energy (BLE) SIG specification v5.0 and with IEEE 802.15.4-2011. This Nucleo-64 is available as a standalone NUCLEO-WB55RG product but also integrated into the P-NUCLEO-WB55 product pack. The NUCLEO-WB55RG allows to simply and quickly evaluate STM32WB55xx and STM32WB35xx devices.

Microcontroller features

  • STM32WB microcontroller in a VFQFPN68 package
  • 2.4 GHz RF transceiver supporting Bluetooth® specification v5.0 and IEEE 802.15.4-2011 PHY and MAC
  • Dedicated Arm® 32-bit Cortex® M0+ CPU for real-time Radio layer
  • Includes ST state-of-the-art patented technology
  • Arm® 32-bit Cortex®-M4 CPU with FPU
  • Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from Flash memory
  • frequency up to 64 MHz, MPU, 80 DMIPS and DSP instructions
  • Up to 1 MB Flash memory with sector protection (PCROP) against R/W operations
  • Up to 256 KB SRAM, including 64 KB with hardware parity check
  • 20x32-bit backup register
  • Boot loader supporting, USART, SPI, I2C and USB interfaces
  • OTA (Over the air) Bluetooth® Low Energy and 802.15.4 update
  • Quad SPI memory interface with XIP
  • 12-bit ADC
  • Inter processor communication controller (IPCC) for communication with Bluetooth® Low Energy and 802.15.4
  • HW semaphores for resources sharing between CPUs
  • DMA controllers (2)
  • USART (1)
  • LPUART (low power) (1)
  • SPI 32 Mbit/s (2)
  • I2C (SMBus/PMBus) (2)
  • SAI (dual channel high quality audio) (1)
  • USB 2.0 FS device, crystal-less, BCD and LPM (1)
  • Touch sensing controller, up to 18 sensors
  • LCD 8x40 with step-up converter
  • Timers 16-bit, four channels advanced (1)
  • Timers 16-bits, two channels timer (2)
  • Timers 32-bits, four channels timer (1)
  • Timers 16-bits ultra-low-power timer (1)
  • Independent Systick (1)
  • Independent watchdog (1)
  • Window watchdog (1)

Nucleo features

  • Two types of extension resources
    • Arduino Uno Revision 3 connectivity
    • STMicroelectronics Morpho extension pin headers for full access to all STM32 I/Os
  • On-board ST-LINK/V2-1 debugger/programmer with SWD connector
    • Selection-mode switch to use the kit as a standalone ST-LINK/V2-1
  • Flexible board power supply
    • USB VBUS or external source (3.3 V, 5 V, 7 - 12 V)
    • Power management access point
    • Three user LEDs
    • Three user buttons and one reset button
  • USB re-enumeration capability: three different interfaces supported on USB
    • Virtual Com port
    • Mass storage (USB Disk drive) for drag'n'drop programming
    • Debug port

Nucleo pinout

Pins Legend


You can find more details on the available pins and labels in the PeripheralPins.c and PinNames.h files.

Arduino-compatible headers

/media/uploads/LMESTM/nucleo_wb55rg_arduino_left.png /media/uploads/LMESTM/nucleo_wb55rg_arduino_right.png

Morpho headers

These headers give access to all STM32 pins. /media/uploads/LMESTM/nucleo_wb55rg_morpho_left.png

Tips and Tricks

Find more information in ST WIKI pages.

BLE FW update

Check information:

Technical references

Standalone board :

Pack :


Known limitations

The following section describes known limitations of the platform. Note that general issues are tracked into the mbed repository available on GitHub.

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