1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of the EP4CE6E22C8N Development Board. This board is designed as an FPGA core system module, compatible with Altera CycloneIV series FPGAs, and integrates essential peripheral chips such as W25Q for flash memory and CH340 for USB-to-serial communication, featuring a convenient Type-C interface. It is intended for use in computer applications and various embedded system development projects.
2. Key Features
- FPGA: Altera CycloneIV EP4CE6E22C8N
- Memory: W25Q series Flash memory for configuration and data storage
- USB Interface: Type-C port for power and data communication
- USB-to-Serial Converter: CH340 chip for reliable serial communication
- Programming Interface: JTAG header for FPGA programming and debugging
- Power Supply: Supports 5V input via Type-C, with onboard voltage regulators providing 3.3V, 2.5V, 1.8V, and 1.2V.
- I/O Pins: Extensive general-purpose input/output pins for connecting external peripherals.
- Clock Source: Integrated 50MHz/25MHz oscillator.
- Reset Functionality: Dedicated reset button.
3. Specifications
| Attribute | Value |
|---|---|
| Quantity | 1 |
| High-concerned chemical | None |
| Package | SMD |
| is_customized | Yes |
| Application | Computer |
| Type | Module |
| Origin | Mainland China |
| Condition | New |
| Dimensions (L x W x H) | 18 cm x 20 cm x 3 cm (approximate) |
| Weight | 0.05 kg (approximate) |
4. Package Contents
The package typically includes:
- 1x EP4CE6E22C8N Development Board
Note: Additional cables or accessories may be sold separately. Please check your order details.
5. Setup Guide
Follow these steps to set up your EP4CE6E22C8N Development Board:
5.1. Board Overview
Familiarize yourself with the layout of the development board. The images below highlight key components and pin headers.
Figure 1: Top view of the EP4CE6E22C8N Development Board, showing the Altera CycloneIV FPGA, Type-C port, JTAG header, and various pin headers. 
Figure 2: Detailed top view of the board, clearly showing pin labels for I/O, power (5V, 3.3V, 2.5V, GND), and the Altera CycloneIV chip. 
Figure 3: Close-up top view, emphasizing the CH340 chip, W25Q flash memory, and the reset button. 5.2. Power Connection
Connect the development board to a 5V power source using a standard Type-C USB cable. The Type-C port is located on the side of the board (refer to Figure 1). Ensure the power source can provide sufficient current for the board and any connected peripherals.
5.3. Driver Installation (if necessary)
If you are using the CH340 USB-to-serial converter for communication with your computer, you may need to install the appropriate CH340 drivers. These drivers are typically available from the CH340 manufacturer's website or common driver repositories.
5.4. JTAG Programmer Connection
To program the FPGA or debug your designs, connect a compatible JTAG programmer to the JTAG header on the board. Ensure the JTAG programmer is correctly connected to your computer and recognized by your FPGA development software (e.g., Intel Quartus Prime).
5.5. Peripheral Connections
Utilize the various I/O pins and power headers (5V, 3.3V, 2.5V, 1.8V, 1.2V, GND) to connect external sensors, actuators, or other modules as required by your project. Always verify pin assignments and voltage levels before making connections to prevent damage.
6. Operating Instructions
Once the board is set up, you can begin developing and testing your FPGA designs:
6.1. FPGA Programming
Use Intel Quartus Prime software (or a compatible FPGA development environment) to compile your VHDL/Verilog code. Connect your JTAG programmer and use the software's programmer tool to download the compiled bitstream (.sof file) to the FPGA. For persistent storage, you can configure the FPGA to load its configuration from the onboard W25Q Flash memory.
6.2. Serial Communication
The integrated CH340 chip provides a virtual COM port over the Type-C connection. You can use a terminal emulator program (e.g., PuTTY, Tera Term) on your computer to communicate with your FPGA design via serial UART. Ensure the correct baud rate and other serial parameters are configured.
6.3. Reset Functionality
Press the onboard reset button to restart the FPGA configuration or your running design. This can be useful during development and testing.
6.4. Powering Peripherals
The board provides regulated power outputs (5V, 3.3V, 2.5V, 1.8V, 1.2V) through dedicated pin headers. These can be used to power external components. Always ensure that the current draw of your peripherals does not exceed the board's capabilities.
7. Maintenance
- Cleaning: Keep the board clean and free from dust and debris. Use a soft, dry brush or compressed air to clean the surface. Avoid using liquids or solvents.
- Storage: Store the board in an anti-static bag when not in use to protect it from electrostatic discharge (ESD). Keep it in a dry, cool environment.
- Handling: Always handle the board by its edges to avoid touching sensitive components and to minimize the risk of ESD damage.
- Inspection: Periodically inspect the board for any signs of physical damage, loose connections, or overheating components.
8. Troubleshooting
- Board Not Powering On:
- Ensure the Type-C cable is securely connected and the power source is active and providing 5V.
- Check the Type-C cable for damage. Try a different cable or power adapter. - FPGA Not Programming:
- Verify that the JTAG programmer is correctly connected to the board and your computer.
- Ensure the JTAG drivers are installed and the programming software recognizes the programmer.
- Check your FPGA design for compilation errors in your development software.
- Confirm that the correct device (EP4CE6E22C8N) is selected in the programming software. - Serial Communication Issues:
- Install the correct CH340 drivers for your operating system.
- Verify the virtual COM port number in your device manager and select it in your terminal emulator.
- Ensure the baud rate and other serial parameters (data bits, parity, stop bits) match between your FPGA design and the terminal emulator. - Unexpected Behavior:
- Review your FPGA design code for logical errors.
- Check all external connections for proper wiring and voltage levels.
- Try pressing the reset button to reinitialize the FPGA.
9. User Tips
- Always double-check your pin assignments and voltage levels before connecting any external components to avoid damaging the board or peripherals.
- When working with FPGAs, it's good practice to start with simple designs to verify basic functionality before moving to more complex projects.
- Utilize the onboard CH340 for debugging serial output from your FPGA designs, which can greatly assist in troubleshooting.
- Consider using a breadboard or prototyping area for external circuits to easily modify and test connections.
10. Warranty and Support
For warranty information, technical support, or further assistance, please contact the seller or manufacturer directly. Keep your purchase receipt or order details handy as proof of purchase.
