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Welcome to OpenSiFli at GitHub, Home of SF32!

SiFli Technologies is a fabless semiconductor design company specializing in silicon platforms tailored for modern AIoT applications. These platforms are typically battery-powered and need to deliver either high-performance computing, ultra-low power consumption, or, frequently, both simultaneously.

SiFli’s SF32 series of microcontrollers feature microprocessors that operate at a peak frequency of 240MHz while ensuring minimal leakage current in sleep mode. The integrated I$ and D$ caches enable seamless execution from extended memory like PSRAM and NOR Flash. The series also provide a range of SiP (system-in-package) options, with in-package PSRAM capacities reaching up to 64MB.

All SiFli microcontrollers come standard with an in-house developed 2.5D GPU, providing hardware-accelerated graphics processing for tasks such as alpha blending, rotation, scaling, and more. An independent display controller manages data transfer to displays with various interfaces, including SPI (1/2/4 data lanes), 8080, DPI/RGB, MIPI, JDI, and others.

Low-power wireless connectivity is provided via single-mode BLE or dual-mode BT/BLE, offering industry-leading ultra-low power consumption. For instance, maintaining a BLE connection with a 1-second interval requires as little as 6µA, while keeping a BT sniff mode (1-attempt) with a 1-second interval requires less than 10uA.

Here you can find a list of resources to help you develope your own products.

Website

SDK

Purchasing the Hardware

Discussions and Requests

GitHub discussions are used for various topics and feature and example requests.

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  1. SiFli-SDK SiFli-SDK Public

    C 148 63

Repositories

Showing 10 of 52 repositories
  • SiFli-SDK Public
    OpenSiFli/SiFli-SDK’s past year of commit activity
    C 148 Apache-2.0 62 45 5 Updated Jan 29, 2026
  • sftool-gui Public

    A user-friendly graphical serial port operation tool for SIFLI series SoC chips.

    OpenSiFli/sftool-gui’s past year of commit activity
    Vue 12 Apache-2.0 7 0 1 Updated Jan 29, 2026
  • OpenSiFli/rpt5602_sf32lb56x-low-power-measurement-report’s past year of commit activity
    Python 0 Apache-2.0 0 0 0 Updated Jan 29, 2026
  • OpenSiFli/rpt5202_sf32lb52x-low-power-measurement-report’s past year of commit activity
    CSS 0 Apache-2.0 0 0 0 Updated Jan 29, 2026
  • SiFli-Wiki Public
    OpenSiFli/SiFli-Wiki’s past year of commit activity
    HTML 5 MIT 14 0 4 Updated Jan 29, 2026
  • OpenSiFli/sifli-sdk-demo’s past year of commit activity
    C 0 Apache-2.0 0 0 0 Updated Jan 28, 2026
  • OpenSiFli/SiFli-Bluetooth’s past year of commit activity
    C 4 9 2 0 Updated Jan 27, 2026
  • EPD_Reader Public
    OpenSiFli/EPD_Reader’s past year of commit activity
    C 16 14 1 1 Updated Jan 27, 2026
  • SiFli-SDK-CodeKit Public

    Accelerate SiFli-SDK Development

    OpenSiFli/SiFli-SDK-CodeKit’s past year of commit activity
    TypeScript 18 Apache-2.0 5 2 0 Updated Jan 26, 2026
  • SiFli-SDK-Peripherals Public

    Various peripheral driver libraries supporting SiFli-SDK

    OpenSiFli/SiFli-SDK-Peripherals’s past year of commit activity
    C 1 Apache-2.0 1 0 1 Updated Jan 26, 2026

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