Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards
Origin	-
FPGA Chip	Gowin GW5A-LV25PG64
Logic Elements	25,600 LEs
Processor Core	RISC-V Soft Core (RV32IM)
Memory	128MB SDRAM
Storage	16MB SPI Flash
Expansion Interface	2x PMOD Connectors
USB Interface	USB Type-C for Power and UART
Clock Source	27MHz On-board Oscillator
LED Indicators	4x User Programmable LEDs
Supported IDE	Gowin EDA, VS Code with PlatformIO

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Good for university projects

Using this for my final year project. The cost is unbeatable for the features offered. The community support is growing, which helps when you get stuck. Would love to see more tutorial videos specifically for the SDRAM controller setup.

Anonymous

Mar 30, 2026

Rating: 5/5

Solid build quality

The PCB layout is clean, and the USB-C connection is sturdy. I appreciate that it comes with the necessary cables. Used it to interface with a camera module via the PMOD, and the timing was precise. Highly recommended for industrial prototyping too.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for learning RISC-V on FPGA

I bought this specifically to learn how soft cores work. The pre-loaded examples allow you to blink LEDs and run C code almost immediately. Having 25K logic elements gives plenty of room to experiment with custom peripherals.

Anonymous

Mar 06, 2026

Rating: 5/5

Best budget RISC-V FPGA board

If you want to explore the open-source hardware ecosystem without breaking the bank, this is the one. The integration between the FPGA fabric and the RISC-V core is seamless. Shipping was fast, and the packaging protected the board well.

Anonymous

Mar 06, 2026

Rating: 5/5

Excellent entry point for Gowin FPGAs

This board is fantastic for anyone looking to move beyond Xilinx or Intel FPGAs. The RISC-V core implementation is smooth, and the documentation provided by Sipeed makes getting started very easy. The PMOD headers are perfectly placed for adding sensors.

Anonymous

Mar 04, 2026

Rating: 4/5

Great value, minor toolchain quirks

Hardware quality is top-notch for the price. The SDRAM works flawlessly once configured. The only reason for 4 stars is that the Gowin EDA software can be a bit heavy on system resources compared to other tools I've used, but the board itself performs beautifully.

5 FAQ

Q: Can I power this board via a standard phone charger?

A: Absolutely. The board uses a USB Type-C port and operates on 5V. Any standard USB-C charger capable of delivering at least 1A will work perfectly.

Q: Does this board support Verilog and VHDL?

A: Yes, the Gowin EDA suite supports both Verilog and VHDL for designing your logic on the Tang Primer 25K.

Q: What is the maximum voltage level for the PMOD IO pins?

A: The PMOD interfaces on the Tang Primer 25K operate at 3.3V logic levels. Please ensure any modules you connect are 3.3V compatible to avoid damage.

Q: Are there example projects available for the RISC-V core?

A: Yes, Sipeed provides a GitHub repository with several example projects, including GPIO control, UART communication, and running simple C applications on the soft core.

Q: Is the JTAG programmer built-in or do I need an external cable?

A: The board features a built-in USB-to-JTAG/UART bridge, so you do not need any external programming cables. You can program and debug directly via the USB-C connection.

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