New STM32WL LoRa and STM32WB with Bluetooth Zigbee and OpenThread

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The new STM32WB and STM32WL micro-controllers of the new STM32Wx family of micro-controllers from STMicroelectronics are available in volume. The STM32WB series with Bluetooth 5.0, OpenThread and Zigbee 3 connectivity will be primarily intended for home automation equipment. The STM32WB series with LoRa connectivity can be used to connect to an M-Bus or Sigfox network. It will rather be intended for the market for connected objects and industrial applications. This is great news for fans of STM32 microcontrollers. STMicroelectronics is finally catching up with Espressif and its ESP8266 and ESP32 SoCs, which have occupied this market segment for several years now.

 

The new STM32Wx micro-controllers bring wireless connectivity to the STM32 family of micro-controllers. They are suitable for industrial and consumer applications.

The STM32Wx are compatible with multiple protocols, from point to point and mesh to energy efficient wide area networks. STM32Wx wireless microcontrollers feature a two-in-one architecture built around a micro-controller and a radio transceiver on a single chip system (SoC).

The 2020 STM32WB and SMT32WL series

The STM32Wx family includes two series

  • STM32WB series with Bluetooth 5.0, Zigbee 3, Thread or OpenThread connectivity
  • The STM32WL series with LoRa connectivity which can also be used to connect to an M-Bus or Sigfox network

Certifications (CE, FCC ..) are in progress

nouveaux STM32WB bluetooth zigbee openthread stm32wl lora sigfox

What is Thread connectivity?

Thread is a low power wireless mesh network protocol based on Internet Protocol (IP)
Thread enables device-to-device and device-to-cloud communications and reliably connects hundreds (or thousands) of products and includes security features.
Thread networks do not have a single point of failure, can self-repair, and reconfigure themselves when a device is added or removed.
Thread is based on the IEEE 802.15.4 radio standard, designed for extremely low power consumption and low latency.

More information on the official website

OpenThread is an Open Source implementation by Google of its NEST home automation equipment.

More information on the official website

STM32WB series with Bluetooth 5.0, Zigbee 3 and OpenThread connectivity

The STM32WB series supports the Bluetooth® LE 5.0 and IEEE 802.15.4 communication protocols, the Zigbee 3 protocol and OpenThread dedicated to home automation equipment.

Connections can be managed individually or simultaneously. The STM32WB is equipped with an anti-cloning system to enhance the security and reliability of the devices.

The STM32WB SoCs are based on an Arm Cortex ‐ M4 core operating at 64 MHz (application processor) and an Arm Cortex‐M0+ core clocked at 32 MHz (network processor).

Depending on the application, you can choose from 256 Kb to 1Mb of flash memory. It is available in several packages ranging from 48 pins (UQFN) to 129 pins (UFBGA)

All references are here

gamme choix stm32wb bluetooth zigbee

The STM32WB series benefits from the long-term production program guaranteeing availability for 10 years.

The STM32WL series with LoRa connectivity compatible with Sigfox and M-Bus

The STM32WL is the world’s first LoRa compatible system-on-a-chip. The STM32WL embeds on the same Die (silicon chip) an STM32L4 microcontroller and a Semtech SX126x network chip.

Le STM32WL embarque sur le même Die un STM32L4 et un puce Lora Semtech SX126x

The LoRa, (G) FSK, (G) MSK and BPSK modulations available can also be used to connect to an M-Bus or Sigfox network

The STM32WL is built on an Arm Cortex-M4 processor clocked at 48MHz. Here are the references available depending on the amount of flash memory and I/O desired.

All references are here

smt32wl lora references en fonction de la mémoire flash et du nombres I/O désirée

The STM32WL series benefits from the long-term production program guaranteeing availability for 10 years.

STMicroelectronics’ new SoCs have been available in large numbers since July 2020. There are a few references from wholesalers such as DigiKey.

P-NUCLEO-WB55 and P-NUCLEO-LRWAN2 Development Boards

The P-NUCLEO-WB55 development board is intended for the development and debugging of STM32-based applications that use bluetooth, Zigbee and / or Thread (OpenThread) home automation protocols. This development kit comes with a USB dongle to debug the wireless network layer.

The P-NUCLEO-LRWAN2 development board is intended for the development and debugging of STM32-based applications that use LoRa protocols. The board is already supported by The Things Network.

Please note, some prices indicated are exclusive of taxes and delivery costs.

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