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Diamond Point International

Connect Tech FreeForm/104 - FPGA with High Speed Digital I/O

Xilinx Spartan 3E FPGA with 500,000 Gates and 360K RAM


FreeForm/104 is a PC/104 based FPGA development board for digital I/O and control applications.

Based on Xilinx’s Spartan-3E, Connect Tech’s FreeForm/104 provides off-the-shelf flexibility, making it ideal for high speed, compute-intensive, reconfigurable applications. The FPGA configuration is stored in flash memory, allowing users to easily implement design changes during development or in the field.

Customized FPGA configurations can be developed easily by the user with the free Xilinx ISE WebPACK software, or through Connect Tech’s engineering services.

The versatility and high speed processing core of the FreeForm/104 makes it ideal for applications including; DSP, software defined radio, aerospace, defense systems, computer hardware emulation, production or laboratory testing and industrial process monitoring and control.

FreeForm/104 for FPGA and Digital I/O Features

  • Customizable PC/104 board based on the Xilinx Spartan 3E - 500,000 gates
  • FPGA configurable through JTAG or SPI flash (4Mb)
  • Reprogrammable in the field for standard and custom designs
  • External 5V power connection for stand alone usage
  • Four user configurable LEDS and on-board reset switch
  • Eight position rotary switch connected to FPGA

Reference Designs

Reference designs are available on request. These reference designs provide example FPGA, HDL, embedded processor configurations and software applications, allowing you to rapidly develop a custom FPGA solution.




• Connectors 2 x 50 pin header: 48 regrogammable 5V buffered I/O +/- 24mA drive current, each connector has 5V power
and a ground pin
• 1 x 26 pin header: 6 bi-directional pins, 12 input pins, 6 ground pins, unbuff ered 5V TTL
• PC/104 header: fully bi-directional, configurable as a master or a slave, 8 bit I/O, 12 address bits, all IRQ’s are
connected, DMA’s 0-3
ConnectionsProgrammable FPGA
• Xilinx Spartan-3E, 500,000 gates, 360K RAM
• Standard FPGA Confi gurations: Digital I/O: 96 digital I/O (8255 compatible), 6 x 8254 counter/timers
• Digital I/O Opto-22: 48 Opto-22 (8255 compatible, 6 x 8254 counter/timers
Input Clock: 66 MHz, internally scaleable
FPGA Code Storage: 4 Mbit SPI Flash
Programmable I/O: 96 high current TTL/CMOS (48 per 50 pin connector), 6 TTL (26 pin connnector)
Fixed I/O: 12 TTL inputs (26 pin connector)
Interrupts: All PC/104 interrupts are connected to the FPGA


ExpansionStandard 16 bit PC/104 interface, stack-through connectors fitted
Electrical+5V DC
0.75 W (0.150A@5V) average with standard design
2.75 W (0.550A@5V) maximum with I/O transfers at 10 Mbps
Current requirements are design dependant
Mechanical96 mm x 90 mm, 3.55" x 3.775" (standard PC/104 size)
Conformal CoatingOn request
TemperatureTemperature range (operation, FBG001): -40°C to +85°C
Temperature range (operation, FBG006): -40°C to +85°C
Temperature range (storage): -65°C to +150°C
Humidity95% non-condensing

Ordering Details

FreeForm/104 includes a standard core with 96 digital I/O and 6 counter/timers. 0 to 70ºC operation

FreeForm/104 includes a standard core with 96 digital I/O and 6 counter/timers. -40 to +85ºC operation