SUB 1GHz MODULE

The SP1ML-868 and SP1ML-915 are ultra-low power & fully integrated RF modules operating respectively in the 868 MHz SRD and 915 MHz ISM bands.

The SP1ML module is a compact-size module, integrating an on-board antenna with easy-to-use interface, allowing users to easily add wireless connectivity in designs without requiring in-depth RF experience, and has all necessary FCC modular approvals and CE compliance, reducing time-to-market.

These modules are based on the SPIRIT1 RF sub-GHz transceiver (with integrated SMPS), STM32L1 microcontroller, integrated filter/balun and chip antenna. The UART host interface allows simple connection to an external microcontroller with a standard firmware, allowing AT commands to facilitate RF configuration, data transmission and reception, using simple point-to-point communication. Selected STM32L1 GPIO and peripherals are available for interfacing to external devices in the user application. Advanced features of the SPIRIT1 radio are also accessible. The serial wire debug interface (SWD) is also available. The SP1ML can be used as an open platform, replacing the default firmware with its own application firmware.

The modules are CE compliant and FCC certified (FCC ID S9NSP1ML).

Key Features

  • Complete RF-ready SPIRIT1 module based on:
    • SPIRIT1 low data rate, low power sub-GHz transceiver
    • STM32L1 Ultra low power microcontroller at 32 MHz (16 kB RAM and 128 kB Flash)
    • BALF-SPI-01D3 868/915 MHz balun with integrated harmonic filter
    • Integrated antenna and crystal
  • Compact size: 14 mm x 13.4 mm x 2.5 mm
  • 863 to 870 MHz operation (SP1ML-868)
  • 902 to 928 MHz operation (SP1ML-915)
  • Operates from a single 1.8 V to 3.6 V supply
  • Output power up to +11.6 dBm
  • Data rates up to 500 kbps
  • Modulation schemes: 2-FSK, GFSK, GMSK, OOK, and ASK
  • Operating temperature: -40 °C to 85 °C
  • UART interface with AT command set
  • FCC and CE regulatory approvals

Resources

Technical Documentation

Product Specifications
Description Version Size
SPIRIT1 868 and 915 MHz low power RF modules with integrated microcontroller 8.0 659 KB
User Manuals
Description Version Size
BLE-Sub1GHz development kit 1.2 1 MB
Design Notes & Tips
Description Version Size
Quick guide on SubGHz RF technology: products, evaluation kits and software packages 1.2 179 KB

Presentations & Training Material

Presentations
Description Version Size
Sub1GHz RF Modules Intro 1 MB

Publications and Collaterals

Brochures
Description Version Size
Wireless connectivity for IoT applications 2.0 2 MB

Tools and Software

Embedded Software
Evaluation Tool Software
Evaluation Tools
Solution Evaluation Tools
Support & Community


Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
SP1ML-915 RF MODULE Tray -40 85 NRND - - NEC 5A992C - MORE INFO DISTRIBUTOR AVAILABILITY
SP1ML-868 RF MODULE Tray -40 85 NRND - - NEC 5A992C - MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SP1ML-915 NRNDRF MODULEIndustrialEcopack2 0 0
SP1ML-868 NRNDRF MODULEIndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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