STMicro unveiled the STM32WL3 sub-GHz wireless MCU family last year and has now announced the general availability of the STM32WL33 Arm Cortex-M0+ microcontroller, along with two development boards namely the NUCLEO-WL33CC1 and NUCLEO-WL33CC2 for battery-powered smart meters and smart building and industrial monitoring solutions using wireless M-Bus, Sigfox, WiSun, LoWPAN or Mioty LPWAN protocols among others.
The NUCLEO-WL33C11 and NUCLEO-WL33CC2 development boards look the same, but the former supports 826-958 MHz high-band frequencies, while the latter handles 413-479 MHz low-band frequencies.
STMicro NUCLEO-WL33CC1/2 specifications:
- SoC – STMicro STM32WL33CCV6
- MCU Core – Arm Cortex-M0+ up to 64 MHz
- Memory – 32KB SRAM with full retention
- Storage
- 256KB flash
- 1 KB OTP flash (user data)
- Sub-GHz Wireless
- 413-479 MHz or 826-958 MHz frequency bands with OOK, ASK, 2(G)FSK, 4(G)FSK, DBPSK, and DSSS modulations
- Compatible with proprietary and standardized wireless protocols such as WM-Bus, Sigfox, Mioty, KNX-RF, and IEEE 802.15.4g
- Low-power autonomous wake-up receiver
- Package – VFQFPN48
- Antenna – SMA antenna
- USB – 1x USB Type-C port
- Expansion
- ARDUINO Uno V3 expansion connector
- ST morpho extension pin headers for full access to all MCU I/Os
- Debugging – STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
- Misc
- 3x user LEDs
- 3x user and 1x Reset push-buttons
- Power Supply – ST-LINK USB VBUS or external sources
STMicro provides free software libraries and examples available with the STM32CubeWL3 MCU Package, dedicated software tools to control and test radio transceiver, and the boards are compatible with several Integrated Development Environments (IDEs) including IAR Embedded Workbench, MDK-ARM, and STMicro’s own STM32CubeIDE.
The NUCLEO-WL33CC1 and NUCLEO-WL33CC2 Sub-GHz development boards are available for $49 on STMicro’s eStore. More details including documentation and software can be found on the product page and in the announcement.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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