Butterfly Uno

The Butterfly Uno provides 5V tolerance on all I/O lines and a Arduino Shield footprint to allow the use of Arduino Shields. The Butterfly Uno can also act like an Arduino shield and use the USB and power from the Arduino.

Specifications

• Power
  • Three independent power rails at 3.3V, 2.5V, and 1.2V.
• USB
  
  • Couples with a FT2232 Cocoon such as the USB Cocoon.
  • Can use the USB from an Arduino
• Spartan 3E FPGA
  • 8MHz oscillator that can be used by Xilinx's DCM to generate any required clock speed.
  • VTQFP-100 footprint that supports Xilinx XC3S100E, XC3S250E, and XC3S500E parts.
  • Bank 0-3 can be jumpered to support 1.2V, 2.5V, or 3.3V.
  • JTAG, Serial, and power connections are routed to the the top header.
  • Power and GPIO are routed to the side headers.
  • Board can be used with Bread Boards if only the outside row of the side headers is populated.
• Wings
  • 48 bidirectional I/O lines which can be split up as:
    • 1 - 32 Bit Wing or
    • 3 - 16 Bit Wings or
    • 6 - 8 Bit Wings

Resources

• Butterfly Loader - A software project to load FPGA bitstreams to the Butterfly Light.