STMicroelectronics STM32WL LoRa-compatible, wireless system-on-chip family

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STMicroelectronics has expanded availability of its STM32WL long-range sub-GHz wireless system-on-chip (SoC) family, adding flexible configurations and package options for diverse mass-market applications.

With the ability to connect devices to LoRa-based low-power wide-area networks (LPWANs), the STM32WL series lets users create IoT devices that are compact and energy efficient. LPWANs provide connectivity over large geographical areas and in remote locations, extending the IoT’s reach and enabling smart technologies to add greater value in industries including utilities, agriculture, shipping, transportation and more.

The series combines ST’s STM32 ultralow-power microcontroller (MCU) architecture with a sub-GHz radio subsystem that supports multiple modulation schemes. These include both LoRa, which allows high receiving sensitivity at low RF signal power, and (G)FSK, (G)MSK and BPSK modulation used by Sigfox and wireless Meter-Bus (wM-Bus) protocols for instance as well as other proprietary protocols or sub-GHz standards. The radio has a selectable dual-power output that helps users comply with RF-power restrictions for unlicensed frequency bands in all territories worldwide.

The latest STM32WL models include the dual-core STM32WL55, based on an Arm Cortex-M4 core and a Cortex-M0+ MCU core which can both be used in a fully open and flexible way. The dual-core architecture ensures hardware isolation that enhances cybersecurity, allows application updates without the need to recertify the device as a new radio product and enhances real-time performance of both the radio and application.

The extended line-up also adds two non-LoRa variants, the single-core STM32WLE4 and dual-core STM32WL54, allowing developers flexibility to leverage the SoC in new wireless IoT projects.

For more information: www.st.com/stm32wl.