Butter stick FPGA development board, 85K logical elements, 256MB RAM.
Uses open source tools for programming the board.
Gigabit ethernet
SYZYGY connectors for expansion.
Manufacturer's 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 256MB (2Gbits) of onboard DDR3L 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
- DDR3L Memory (2Gbits)
- SYZYGY compatible
- 82 I/O pins
- 5Gbps SERDES (upto 4x tx/rx lanes)
- Hardware Overview
- Lattice ECP5 85F FPGA in BGA381 package
- 2Gbit DDR3L Memory
- 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
- up to 32 single ended I/O
- 10 differential pairs
- Dedicated clock input pins
- SYZYGY C (Transceiver)
- Adjustable VCCIO 1.2V-3.3V
- up to 14 single ended I/O
- 4x Lanes RX (5Gbps)
- 4x Lanes TX (5Gbps)
- 1x Reference clock input
- Board dimensions
- Dimensions: 80mm x 49mm