STM32WLE5 inside Module AcSiP ST50H

  • STM32WLE5 inside Module AcSiP ST50H
STM32WLE5 inside Module AcSiP ST50H

The ST50H integrates ARM Coretex®-M4 (32-bit RISC core operating at a frequency of up to 48 MHz) MCU with LoRa modulation that provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

The ST50H can achieve a sensitivity of over -136 dBm. The high sensitivity combined with the integrated +22 dBm power amplifier yields industry leading link budget making it optimal for any low data rate
application requiring range or robustness. LoRa also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between
range, interference immunity and energy consumption.

Key Feature

    • Compact size with MCU, clock source and sub-GHz radio inside: 12 x 12 x 1.3mm
    • High performance 32-bit microcontroller: ARM Cortex M4
    • Ultra-low power with various consumption levels (Min 1uA@ STOP 2 mode)
    • STM32 Security: HW encryption 256 AES, PKA, RNG, 64-bit UID, 96-bit
    • Embedded sub-GHz transceiver based-on Semtech SX126x
    • Ecosystem support:LoRaWAN, Sigfox
    • A IoT and Smart-metering (Wireless M-Bus) applications


    • Chipset: STM32WLE5(single core)
    • High performance ARM® Cortex®-M4 32-bit RISC core operating up to 48 MHz frequency
    • Embedded memories (256 Kbytes of Flash memory and 64 Kbytes of RAM)
    • Hardware encryption AES 256-bit
    • True random number generator (RNG)
    • CRC calculation unit
    • Unique device identifier (64-bit UID compliant with IEEE 802-2001 standard)
    • 96-bit unique die identifier
    • Hardware public key accelerator (PKA)
    • 32 MHz TCXO & 32 KHz XTAL
    • 2 DMA, 2 USART, 1 LPUART, 2 SPI, 3 I2C
    • RTC wakeup counter, SysTick, Watchdog
    • Modulation: LoRa®, (G)FSK, (G)MSK and BPSK
    • +22 dBm Max. RF output
    • Programmable bit rate up to 300 kbps
    • High sensitivity: down to -136 dBm for LoRa @125kHz, SF12
    • Automatic RF Sense and CAD with ultra-fast AFC
    • Small footprint:12 mm x 12 mm x 1.22 mm(Typ.)
    • High-efficiency SMPS step-down converter and independent power
      supplies for ADC, DAC and comparator analog inputs.
    • VBAT mode with RTC and 20x32-byte backup registers, battery voltage monitoring

Technical Specification

Product Description: LoRa Wireless Communication Module
Package: LGA type
Host Interface: UART
Dimension: 12 x 12 x 1.3 mm(Typ.)

Recommended Operation Conditions

Operating Voltage: 3.3V
  • Storage: -50℃ ~ +125℃
  • Operating: -40℃ ~ +85C
  • Low Power Dissipation: -40℃ ~ +95℃ (*Note)
  • Operating:10 ~ 95% (Non-Condensing)
  • Storage:5 ~ 95% (Non-Condensing)

Electrical Specifications

Frequency: 779-928 MHz
Band Width: 7.8 - 500 KHz
Bit rate:
  • LoRa BR : 0.013 – 17.4 kb/s
  • (G) FSK BR : 0.6 - 300 kb/s
SF: SF5 - SF12
Tx Power: +22dBm Max.
Sensitivity: < -136dBm @125kHz, SF12

*Note: Low Power Dissipation : means low TX duty cycle and low GPIO driving and sinking current