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Single-unit price: $179.99 + shipping

Not available / campaign end date: Fri, 29 Jan 2021 13:00:00 PST

Backers icon

Backers: 160

Target icon campaign show

Target: 280

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Funded: 290

Product Details



Brand / Manufacturer

Good Stuff Department

Manufacturer Part #


Product Description

The ButterStick is an FPGA development board. Building off the OrangeCrab, the Butterstick's primary focus is exposing lots of fast I/O pins. To achieve this goal it makes use of the SYZYGY peripheral connector standard. The board features High-speed USB and Gigabit Ethernet for high-speed input/output to a computer. Additionally there is up to 1 GB of onboard DDR3 memory.

The development board makes use of the ECP5 FPGA from Lattice which is fully compatible with the open-source FPGA synthesis flow.

Features at a glance

  • Compact Size
  • High speed USB (480Mbit/s)
  • Gigabit Ethernet
  • DDR3 Memory (upto 8Gbits)
  • SYZYGY compatible
  • up to 82 I/O pins
  • 5Gbps SERDES (upto 4x tx/rx lanes)

ButterStick PCB

Hardware Overview

  • Lattice ECP5  85F FPGA in BGA381 package
  • 2Gbit/8Gbit DDR3L Memory (dual rank)
  • USB-C USB2.0 connection
    • High-speed (480Mbit) ULPI PHY
  • Non-volatile Storage
    • 128Mbit QSPI FLASH Memory
    • MicroSD socket
      • 4bit SD interface (CK, CMD, DAT0-3)
  • Power supply
    • USB-C 5V input.
    • Aux 5V power input.
  • Onboard oscillators
    • 60Mhz
    • 25MHz (RGMII PHY)
  • Convenient 0.1" JTAG connector
  • User I/O
    • 2x Button
    • 7x RGB LED
    • SYZYGY A,B (Standard)
      • Adjustable VCCIO 1.2V-3.3V
      • upto 32 single ended I/O
      • 10 differential pairs
      • Dedicated clock input pins
    • SYZYGY C (Transceiver)
      • Adjustable VCCIO 1.2V-3.3V
      • upto 14 single ended I/O
      • 2x / 4x Lanes TX (5Gbps)
      • 2x / 4x Lanes RX (5Gbps)
      • 1x Reference clock input
  • Board dimensions
    • Dimensions: 80mm x 49mm
ButterStick-r1.0-8G-85F | 
LFE5UM5G-85F-8BG381C |
2x MT41K256M16TW-107 |

Back of ButterStick

Size Comparision


Why GroupGets?

The groupbuy will facilitate the funds required to make a production batch of these boards.

External Links

Manufacturer product page

Purchase Information

Unit Deliverable

One Butterstick FPGA

Unit Price


Campaign Part #



Not available / campaign funded, end date: Fri, 29 Jan 2021 13:00:00 PST

Factory Lead Time

140 Days

Options and Add-Ons

32GB SanDisk Ultra Micro SD Card


SYZYGY Breakout Board


SYZYGY Breakout

Basic breakout/prototype board

Design subject to change

Help Quesitons  icon  campaign

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We are proud to support ButterStick in reaching its goal. Once the target has been reached the product will be distributed to all backers. Don't miss out on becoming a backer!

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