STMicroelectronics has released what it claims is the first
LoRa system-on-chip (SoC) for connecting smart devices to the IoT using
long-distance wireless connections. The STM32WLE5 SoC lets product developers
create devices such as remote environmental sensors, meters, trackers and
process controllers that help efficiently manage energy and resources, says ST.
The SoC combines the ultra-low-power STM32 MCU design
with a LoRa-compliant radio in one single-die and easy-to-use device. With
multiple ST patents pending, namely for radio Power Management Architecture,
the STM32WLE5 will ensure unique performance. ST’s LoRaWAN software for
wireless network communications has passed all regional certifications for use
worldwide.
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STM32WLE5 users are supported by ST’s rolling 10-year
longevity commitment for industrial products. The STM32WLE5 is available in a
5mm x 5mm UFBGA73 package. It is fully integrated into the market-proven STM32
ecosystem, including STM32Cube software support, as well as a LoRaWAN stack
certified for all regions and available in source-code format.
The integrated radio based on Semtech SX126x IP is
engineered with dual high-power and low-power transmitter modes that cover the
entire global sub-1GHz unlicensed frequency range from 150MHz to 960MHz,
ensuring compatibility with LoRa networks in all territories. Hence, OEMs can
use STM32WLE5 for all world markets, ensuring technical compatibility, and
aiding operational efficiency and customer support. Sensitivity down to -148dBm,
and two embedded power amplifiers with up to 15dBm and up to 22dBm maximum
transmit power available in the same package, maximize RF range.
In addition to the embedded LoRa modulation, the
STM32WLE5 is also capable of (G)FSK, (G)MSK, and BPSK modulation thus allowing
various alternative protocols including proprietary protocols. Moreover, high
RF performance with low power consumption ensures reliable wireless
connectivity and extends the runtime of battery-powered devices.
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The MCU leverages ST’s STM32L4 architecture, which
features the Arm Cortex-M4 core with DSP extensions and brings ultra-low-power
technologies including dynamic voltage scaling and ST’s adaptive real-time ART
Accelerator for zero-wait execution from flash. Generous 64KB, 128KB and 256KB flash
options let developers choose the optimal code and data storage density for the
entire platform including application and radio.
Users also benefit from the built-in cyber-security features of STM32L4 MCUs, including hardware public key accelerator (PKA), True Random Number Generator (TRNG), sector protection against read/write operation (PCROP), and support for state-of-the-art cryptographic algorithms including RSA.
STMicroelectronics | www.st.com
