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STMicroelectronics STM32WL5x and STM32WLEx

Multiprotocol LPWAN 32-bit Arm Cortex-M4/M0+ MCUs, LoRa, (G)FSK, (G)MSK, BPSK

Complementing the STM32 RF connectivity portfolio, the STM32WL5x and STM32WLEx System-on-Chip (SoC) integrates both a general-purpose microcontroller and a sub-GHz radio on the same chip. Built on Arm^® Cortex^®‐M4 and Cortex^®-M0+ cores (single- and dual-core architectures available), STM32WL5x and STM32WLEx microcontrollers support multiple modulations– LoRa^®, (G)FSK, (G)MSK, BPSK, to ensure flexibility in wireless applications with LoRaWAN^®, Sigfox, W-MBUS or any other suitable protocol, in a fully open way.

Key features

Arm^® Cortex^®-M4 CPU up to 48 MHz
Up to 256 KB Flash and 64 KB SRAM
Sub-GHz radio – multi-modulations: LoRa, (G)FSK, (G)MSK, BPSK
Peripherals: 3 x I²C, 2 x USART, 1 x LP-UART, 2 x SP

Additional features

Radio

Frequency range: 150...960 MHz
Modulation: LoRa^®, (G)FSK, (G)MSK, and BPSK
RX sensitivity:
- -123 dBm for 2-FSK (at 1.2 Kbit/s)
- -148 dBm for LoRa^® (at 10.4 kHz, spreading factor 12)
Transmitter high output power, programmable up to +22 dBm
Transmitter low output power, programmable up to +15 dBm
Compliant with the following radio frequency regulations:
ETSI EN 300 220, EN 300 113, EN 301 166, FCC CFR 47 Part 15, 24, 90, 101, and the Japanese ARIB STD-T30, T-67, T-108
Compatible with standardized or proprietary protocols such as LoRaWAN^®, Sigfox™, W-MBus, and more (fully open wireless system-on-chip)

Ultra-low-power platform

1.8...3.6 V power supply
-40...+105 °C temperature range
Shutdown mode: 31 nA (VDD = 3 V)
Standby (+ RTC) mode: 360 nA (VDD = 3 V)
Stop2 (+ RTC) mode: 1.07 µA (VDD = 3 V)
Active-mode MCU: < 72 µA/MHz (CoreMark^®)
Active-mode RX: 4.82 mA
Active-mode TX: 15 mA at 10 dBm and 87 mA at 20 dBm (LoRa^® 125 kHz) Core
32-bit Arm^® Cortex^®-M4 CPU:
- Adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory
- Frequency up to 48 MHz
- MPU and DSP instructions
- 1.25 DMIPS/MHz (Dhrystone 2.1)
32-bit Arm^®Cortex^®-M0+ CPU (for STM32WLEx series only)
- Frequency up to 48 MHz
- MPU instructions
- 0.95 DMIPS/MHz (Dhrystone 2.1)

Applications

Fully-open series that supports multi-modulation
Deal choice for LPWAN and IoT developments
Outstanding ultra-low power consumption

Available seminars

Webinar Replay: STM32WL - The world’s first LoRa-enabled System-on-Chip
https://www.st.com/content/st_com/en/premium-content/premium-content-webinar-stm32wl-the-worlds-first-lora-enabled-system-on-chip.html

Available tools

NUCLEO-WL55JC

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.

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