Overview

Open3S250E is an FPGA development board that consists of the mother board DVK601 and the FPGA core board Core3S250E.

Open3S250E supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with XILINX Spartan-3E series FPGA devices.

What's on the mother board

1. FPGA CPLD core board connector: for easily connecting core boards which integrate an FPGA CPLD chip onboard, such as Core3S250E
2. 8I/Os_1 interface, for connecting accessory boards/modules
3. 8I/Os_2 interface, for connecting accessory boards/modules
4. 8I/Os_3 interface, for connecting accessory boards/modules
5. 8I/Os_4 interface, for connecting accessory boards/modules
6. 16I/Os_1 interface, for connecting accessory boards/modules
7. 16I/Os_2 interface, for connecting accessory boards/modules
8. 32I/Os_1 interface, for connecting accessory boards/modules
9. 32I/Os_2 interface, for connecting accessory boards/modules

10. FPGA expansion connectors
    • FPGA pins are accessible on expansion connectors
    • for connecting SDRAM accessory board
11. LCD interface, for connecting LCD22, LCD12864, LCD1602
12. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
13. Buzzer
14. Joystick: five positions
15. Potentiometer: for LCD22 backlight adjustment, or LCD12864, LCD1602 contrast adjustment
16. Buzzer jumper
17. Joystick jumper
18. ONE-WIRE jumper

What's on the Core3S250E

1. XC3S250E: the XILINX Spartan-3E FPGA device which features:
   • Operating Frequency: 50MHz
   • Operating Voltage: 1.15V～3.3V
   • Package: QFP144
   • I/Os: 80
   • LEs: 250K
   • RAM: 216kb
   • DCMs: 4
   • Debugging/Programming: supports JTAG
2. AMS1117-3.3, 3.3V voltage regulator
3. AMS1117-2.5, 2.5V voltage regulator
4. AMS1117-1.2, 1.2V voltage regulator
5. XCF02S, onboard serial FLASH memory, for storing code
6. Power indicator
7. LEDs
8. FPGA initialization indicator
9. Reset button
10. nCONFIG button: for re-configuring the FPGA chip, the equivalent of power reseting
11. Power switch
12. 50M active crystal oscillator
13. 5V DC jack
14. JTAG interface: for debugging/programming
15. FPGA pins expander, VCC, GND and all the I/O ports are accessible on expansion connectors for further expansion
16. LED jumpers

Examples

The Open3S250E FPGA development board comes with various examples codes for the supported peripherals, which give you a quick start to develop your own application.

Debugging/Programming Interface

The Open3S250E FPGA development board integrates JTAG interface for programming/debugging.

JTAG Signal Names & Description

JTAG Header Pinout

Development Resources

The Open3S250E FPGA development board comes with a User Guide CD including development resources listed as below:

• Related software (Xilinx ISE 12)
• Demo code (Verilog, VHDL)
• Schematic (PDF)
• FPGA development documentations

Package Contains