NUCLEO-WL55JC Data brief STM32WL Nucleo-64 board Features STM32WL55JC microcontroller multiprotocol LPWAN dual-core 32-bit (Arm Cortex -M4/M0+ at 48 MHz) in UFBGA73 package featuring: Ultra-low-power MCU RF transceiver (150 MHz to 960 MHz frequency range) supporting LoRa , (G)FSK, (G)MSK, and BPSK modulations 256-Kbyte Flash memory and 64-Kbyte SRAM 3 user LEDs 3 user buttons and 1 reset push-button 32.768 kHz LSE crystal oscillator 32 MHz HSE on-board oscillator Board connectors: NUCLEO-WL55JC example. Boards USB with Micro-B with different references show different layouts. Picture is not contractual. MIPI debug connector ARDUINO Uno V3 expansion connector ST morpho extension pin headers for full access to all STM32WL I/Os Delivered with SMA antenna Flexible power-supply options: ST-LINK, USB V , or external sources BUS On-board STLINK-V3 debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port Comprehensive free software libraries and examples available with the Product status link STM32CubeWL MCU Package Support of a wide choice of Integrated Development Environments (IDEs) NUCLEO-WL55JC including IAR Embedded Workbench , MDK-ARM, and STM32CubeIDE Suitable for rapid prototyping of end nodes based on LoRaWAN , Sigfox , wM-Bus, and many other proprietary protocols Fully open hardware platform Description The NUCLEO-WL55JC STM32WL Nucleo-64 board provides an affordable and flexible way for users to try out new concepts and build prototypes with the STM32WL Series microcontroller, choosing from the various combinations of performance, power consumption, and features. The ARDUINO Uno V3 connectivity support and the ST morpho headers provide an easy means of expanding the functionality of the STM32WL Nucleo open development platform with a wide choice of specialized shields. The STM32WL Nucleo-64 board does not require any separate probe as it integrates the STLINK-V3E debugger and programmer. The STM32WL Nucleo-64 board is provided with the STM32WL comprehensive software HAL library and various packaged software examples available with the STM32CubeWL MCU Package. DB3933 - Rev 1 - November 2020 www.st.com For further information contact your local STMicroelectronics sales office.NUCLEO-WL55JC Ordering information 1 Ordering information To order an STM32WL Nucleo-64 board, refer to Table 1. For a detailed description of each board, refer to its user manual on the product web page. Additional information is available from the datasheet and reference manual of the target STM32. Table 1. List of available products Board User Order code Target STM32 Differentiating feature reference manual High-frequency band. RF frequency NUCLEO-WL55JC1 range from 865 to 928 MHz MB1389 UM2592 STM32WL55JCI7U Low-frequency band. RF frequency NUCLEO-WL55JC2 range from 433 to 510 MHz 1.1 Product marking The sticker located on the top or bottom side of the PCB board shows the information about product identification such as board reference, revision, and serial number. The first identification line has the following format: MBxxxx-Variant-yzz, where MBxxxx is the board reference, Variant (optional) identifies the mounting variant when several exist, is the PCB revision andz is the assembly revision: for example B01. The second identification line is the board serial number used for traceability. Evaluation tools marked as ES or E are not yet qualified and therefore not ready to be used as reference design or in production. Any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering sample tools as reference designs or in production. E or ES 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. These boards feature a specific STM32 device version, which allows the operation of any bundled commercial stack/library available. This STM32 device shows a marking option at the end of the standard part number and is not available for sales. In order to use the same commercial stack in his application, a developer may need to purchase a part number specific to this stack/library. The price of those part numbers includes the stack/library royalties. DB3933 - Rev 1 page 2/8