iCEBreaker FPGA Board

iCEBreaker FPGA Board - Low Cost Open Source Educational FPGA Development Kit

The iCEBreaker FPGA is a low-cost, open-source educational and development board based on the Lattice iCE40UP5K FPGA. It is designed primarily for teaching and learning the open-source FPGA toolchain (Yosys, nextpnr, IceStorm, etc.) and is fully compatible with proprietary Lattice tools. The board features excellent expandability via Pmod connectors, a breakaway Pmod section with LEDs and buttons, a high-speed USB interface (FT2232H), and ample storage, making it ideal for workshops, prototyping, soft-core CPUs (e.g., RISC-V), video output, LED matrices, and many other projects.

It is open hardware with published schematics and design files. A smaller variant called iCEBreaker Bitsy exists for embedded applications.

Specifications

• Model: iCEBreaker V1.0f 
• FPGA: Lattice iCE40UP5K (QFN48)
  • 5280 logic cells (4-LUT + Carry + FF)
  • 120–128 Kbit dual-port block RAM
  • 1 Mbit (128 KB) single-port RAM
  • 8 DSP blocks (multipliers)
  • PLL, 2× SPI, 2× I2C hard IPs
  • Internal oscillators (10 kHz + 48 MHz)
  • 3× 24 mA drive + 3× hard PWM IPs
• Memory: 128 Mbit (16 MB) QSPI-DDR capable Flash (Winbond W25Q128)
• Interface: FT2232H USB (high-speed, programming + virtual serial port)
• I/O:
  • 2× Pmod connectors (16 pins total)
  • 1× breakaway Pmod (8 pins) with 5 LEDs + 3 buttons
  • RGB LED header, 2 onboard LEDs, 1 user button
  • UART via USB, clock input, various debug/test points
• Power: 5V, 3.3V, 1.2V rails with measurement jumpers
• Other: 12 MHz oscillator, mounting holes, open-source toolchain support (Yosys, IceStorm, icestudio, Amaranth, etc.)
• Manufacturer: Opensource/China

Documentation: https://github.com/icebreaker-fpga/icebreaker

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