STM32WLEx 32-Bit Wireless Long-Range MCUs

STM32WLEx 32-Bit Wireless Long-Range MCUs

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STMicroelectronics’ long-range wireless and ultra-low-power devices embed a powerful ultra-low-power LPWAN-compliant radio solution

STMicroelectronics’ STM32WLE5/E4xx long-range wireless and ultra-low-power devices embed a powerful ultra-low-power LPWAN-compliant radio solution, enabling the LoRa® (available in STM32WLx5xx only), (G)FSK, (G)MSK, and BPSK modulations. These MCUs are compatible with standardized or proprietary protocols such as LoRaWAN®, Sigfox, W-MBUS, and more (fully open wireless system on chip).

Features

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)

more information: https://www.st.com/en/microcontrollers-microprocessors/stm32wlex.html

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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