iCESugar-Pro FPGA Development Board
Open-source Lattice ECP5 FPGA dev board with 24K LUTs, 32MB SDRAM, 32MB SPI flash, 106 GPIO pins in DDR SODIMM form factor. Supports fully open-source toolchain (Yosys + Nextpnr) and RISC-V Linux.
$60.00
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Specifications
Components
Lattice Semiconductor ECP5 FPGA with 24K LUTs, 1008Kb embedded memory, 28 DSP multipliers, 1 PLL, in BGA-256 package. Fully supported by open-source Yosys + Nextpnr toolchain.
ISSI IS42S16160B 256Mbit (32MB) synchronous DRAM with 16-bit data bus, suitable for frame buffers and running Linux on soft-core RISC-V processors.
Winbond W25Q256JV 256Mbit (32MB) SPI NOR flash memory with dual/quad SPI support and up to 133MHz clock for FPGA bitstream and firmware storage.
Geehy APM32F1 ARM Cortex-M3 MCU running ARM Mbed DAPLink firmware. Provides drag-and-drop bitstream programming via virtual USB drive, USB CDC serial port directly connected to FPGA, and dual JTAG interfaces (native ECP5 + GPIO-based for custom SoC).
Bus Interfaces
Overview
The iCESugar-Pro is an open-source FPGA development board built around the Lattice ECP5 LFE5U-25F-6BG256C, offering 24K LUTs, 1008Kb of embedded memory, and 28 hardware DSP multipliers. Designed in a compact DDR2 SODIMM form factor with a 200-pin edge connector, it exposes 106 usable I/O pins for maximum flexibility in custom digital logic designs, hardware prototyping, and soft-core processor development.
The board includes 32MB of ISSI IS42S16160B SDRAM and 32MB of Winbond W25Q256JV SPI flash, providing enough memory to run a full RISC-V Linux system using the LiteX framework. An integrated iCELink debugger based on the APM32F1 ARM MCU offers drag-and-drop bitstream programming via a virtual USB drive, USB CDC serial communication directly connected to the FPGA, and dual JTAG interfaces for both native ECP5 debugging and custom SoC debugging.
What sets the iCESugar-Pro apart is its commitment to the fully open-source FPGA toolchain. Development uses Yosys for synthesis, Nextpnr for place-and-route, and Project Trellis for ECP5 bitstream generation — no proprietary tools required. The board also includes an SD card slot supporting both SPI and SDIO modes, an RGB status LED, and a 25MHz crystal oscillator, making it a complete platform for FPGA education, RISC-V experimentation, and custom hardware accelerator prototyping.
Use Cases
10Custom Logic Design
Implementing custom digital logic and hardware accelerators using FPGAs or programmable devices.
FPGA Prototyping
Rapid prototyping of digital circuits and hardware accelerators using programmable logic arrays.
RISC-V Development Platform
A development platform for learning, experimenting with, and building applications on the open RISC-V instruction set architecture.
FPGA Linux
Running Linux on a soft-core RISC-V CPU implemented on an FPGA using frameworks like LiteX.
HDMI Video Output
Generating HDMI video signals from FPGA logic for display output and video processing applications.
Digital Signal Processing
Implementing DSP algorithms in FPGA hardware for real-time audio, video, and signal processing.
Embedded Systems Education
Teaching embedded systems concepts including firmware, real-time OS, and hardware interfaces.
Educational Platform
Development boards suitable for teaching programming, electronics, and embedded systems concepts.
Prototyping
Rapid hardware prototyping and proof-of-concept development with breadboard-friendly form factors and accessible development environments.
Hardware-Accelerated IoT
IoT applications using hardware acceleration for AI inference, crypto, or signal processing.
Resources
Where to Buy
Available Software
6Yosys
Open SourceOpen-source RTL synthesis framework for Verilog.
Nextpnr
Open SourceOpen-source FPGA place-and-route tool supporting ECP5.
Project Trellis
Open SourceOpen-source ECP5 bitstream documentation and tools.
LiteX
Open SourcePython-based SoC builder framework for running RISC-V Linux on FPGA.
icesprog
Open SourceCommand-line FPGA programming tool for iCESugar boards.
oss-cad-suite
Open SourceComplete open-source EDA toolchain bundle including Yosys, Nextpnr, and more.
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