STM32WLEX 32-BIT WIRELESS LONG-RANGE MCUS

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)

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