SparkFun QuickLogic Thing Plus – EOS S3

• 1x SparkFun QuickLogic Thing Plus – EOS S3

Size

• 2.75 x 0.9 inch (L x W)

PDF Files

• SparkFun QuickLogic Thing Plus – EOS S3 – Datasheet
• SparkFun QuickLogic Thing Plus – EOS S3 – Schematics

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

Thing Plus Form Factor

• Breadboard-compatible 0.1 inch (2.54 mm) pitch headers
• 2.75 x 0.9 inches (70 x 22.9 mm) footprint
• All 20 Feather-defined GPIO + 14 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 available via I/O headers, and Qwiic Connector
• SPI
• I2S

Storage

• 16 Mbit SPI NOR flash – GigaDevice GD25Q16CEIGR

Sensors

• 3-Axis 12-bit Accelerometer – STMicro LIS2DH12TR
• Digital pulse density modulation (PDM) microphone with Wake-on-Sound (WoS) feature – Vesper VM3011-U1

User Interfaces

• RGB LED
• User pushbutton
• Reset pushbutton

Power

• USB Type-C connector (regulated to 3.3 V)
• Single Cell LiPo battery
• On-board charging circuitry – Microchip MCP73831/2
• Standard LiPo JST connector

Software (Machine Learning)

• TensorFlow Lite
• SensiML

Real-time Operating Systems

• Zephyr RTOS
• FreeRTOS

FPGA Tools

• SymbiFlow
• Renode