QuickFeather 是一款面向 QuickLogic EOS S3 的开发板，EOS S3 是一款低功耗系统级芯片（SoC），集成了 Arm® Cortex®-M4F 微控制器和嵌入式 FPGA，能够助力下一代低功耗嵌入式机器学习（ML）的发展。

该开发板兼容 Adafruit Feather 生态系统中的 60 多种现成扩展板，支持通过锂电池供电并为其充电，并且板载有麦克风、加速度计和气压传感器。

项目来源：QuickFeather - A 100% open source dev board for the EOS S3 low-power MCU with embedded FPGA

Features & Specfications

• EOS S3 MCU + eFPGA SoC
• • Arm® Cortex®-M4F Microcontroller
  • • up to 80 MHz operating frequency
    • up to 512 Kb SRAM
  • Embedded FPGA (eFPGA)
  • • 2400 effective logic cells
    • 64 Kb RAM
• Feather Form Factor
• • Breadboard-compatible 0.1" (2.54 mm) pitch headers - all headers are pre-soldered
  • 2.3" x 0.9" (58.4 mm x 22.9 mm) footprint
  • All 20 Feather-defined GPIO + 13 additional GPIO
• Interfaces
• • SWD programming connector for use with USB-TTL converter
  • USB data signals are tied to eFPGA programmable logic
  • UART available via I/O headers
  • I²C
  • I²S
  • SPI
• Storage: 16 Mbit SPI NOR flash - GigaDevice GD25Q16CEIGR
• Sensors
• • Accelerometer - mCube MC3635
  • Pressure sensor - Infineon DPS310
  • Digital pulse density modulation (PDM) microphone - Infineon IM69D130
• User Interfaces
• • RGB LED
  • User pushbutton
  • Reset pushbutton
• Power
• • USB micro Type-B connector (regulated to 3.3 V)
  • Li-Po battery
  • • On-board charging circuitry - Microchip MCP73831/2
    • Standard Li-Po JST connector
• Software
• • Machine Learning
  • • TensorFlow Lite
    • SensiML
  • Real-time Operating Systems
  • • Zephyr RTOS
    • FreeRTOS
  • FPGA Tools
  • • SymbiFlow
    • Renode