Product Description


The TinyFPGA BX brings the power and flexibility of custom digital logic designs to the maker community. The BX module allows you to design and implement your own digital logic circuits in a tiny form-factor perfect for breadboards, small spaces, or custom PCBs.

This incredible power allows you to do things that are not possible with traditional microcontrollers. While microcontroller boards have a fixed set of peripheral devices on-board, the TinyFPGA BX modules can implement the exact peripheral devices needed to get the job done. It's not software bit-banging, it's the real deal implemented in digital logic. When the next project has different requirements, reprogram the TinyFPGA BX with a new design suited to the task.

The full potential of programmable logic devices allows for even more ambitious projects than custom microcontroller peripherals: augment a retro-computer with new capabilities, recreate an 8-bit computer from history, or design your own.

If you don't know what the big deal is with custom digital logic, then here's a great way to learn. Place a TinyFPGA BX down on a breadboard and get to work interfacing it with LEDs, switches, rotary encoders, and any other peripheral, sensor, or interface you might like to try. The low cost of the BX and open-source ecosystem make this an excellent way to get started on a new adventure with digital logic.

Whether you are a hobbyist looking to expand your capabilities, a professional prototyping a new product, or a student learning the ropes of digital design, the TinyFPGA BX can help you on your way.

Who Needs It and Why?

Have you ever wanted to use an FPGA in a project, but the available boards were too big or expensive? New to FPGAs and want to learn how to use them? Want to put an FPGA on a PCB you are designing but don't want to worry about power delivery, clocking, configuration flash, or difficult surface mount packages? If you answered "yes" to any of these questions, then the TinyFPGA BX can help!

The TinyFPGA BX is designed for makers and hobbyists. It puts youin control by taking care of FPGA support details and getting out of your way. It provides an easy to use component for your projects. It's small enough to fit comfortably on a breadboard for learning or prototyping. When you're ready, you can design a custom PCB incorporating a TinyFPGA BX module.

The TinyFPGA BX module is completely open hardware and open source. If you move beyond the need for through-hole components, you may decide you want to re-use or adapt the design for your own creations.


The TinyFPGA BX is a small FPGA module with all of the components and circuitry required for the FPGA to function taken care of for you. To develop for the board you create a design in your favorite digital design language (Verilog/VHDLand Chisel are some popular options). Alternatively, you can use a schematic entry tool like IceStudio. A schematic entry tool allows you to graphically draw a digital circuit to be implemented on the FPGA.

Once you have a design, you can program it onto the TinyFPGA BX module over USB. All the functions your design implements will now be able to interface with the outside world through the module's IO pins.


●Height: 1.4 inches, width: 0.7 inches

Programming interface: USB 2.0 full-speed (12 mbit/sec)


     ◎7,680 four-input look-up-tables

     128 KBit block RAM

     Phase Locked Loop

     41 user IO pins

8 MBit of SPI Flash

Onboard 3.3 V (300 mA) and 1.2 V (150 mA) LDO regulators

Low-Power 16 MHz MEMs Oscillator

1.3 mA power when active

50 ppm stability.


Small form-factor is breadboard friendly

There's plenty of space on either side for connecting jumpers or components. There is no smaller FPGA board available with this many logic resources!

Open source bootloader

Forget proprietary and expensive USB interface chips, the TinyFPGA BX implements its own open source USB bootloader! Upon power-up, USB bootloader is loaded from SPI flash and becomes active. It appears on the host computer as a virtual serial port device. The programmer software automatically detects the board and uses the serial interface to program your design onto the board. Once your design is loaded in the SPI flash, the board reboots and loads your design without the bootloader. To update your design just press the reset button and the bootloader will be activated again.

The TinyFPGA Bootloader has features that proprietary chips do not have. In addition to lowering the cost of the board for users like you, it also contains metadata on the SPI flash in an open JSON format. This metadata contains:

1.A unique ID for each board. No matter what serial port designation your OS assigns your board, you can always be sure you are programming the right one.

2.A human-readable name of the board and FPGA.

3.Information on where to put the user program and optional user data.

4.An update URL for fetching bootloader/firmware updates.

For technical details and source code see the TinyFPGA Bootloader GitHub repository.

High-quality PCB design

The TinyFPGA BX improves upon the previous B2 model in every aspect and the PCB layout is no exception. In addition to nearly doubling the number of user IOs, the new PCB layout also an improved PCB layout and power delivery:

1.Four-layer PCB with dedicated ground and power planes

2.Six external ground connections (including the USB connector)

3.Power distribution and decoupling capacitors implemented by the book for all ICs, including bulk capacitance and ferrite bead filtering for the board.

Open source FPGA toolchain support

In addition to the free tools from Lattice for developing with the iCE40 FPGAs, the TinyFPGA BX is also supported by the completely open-source IceStorm FPGA toolchain.

IceStorm has enabled incredible tools like IceStudio to be developed. If you are new to the world of digital logic, IceStudio is a great way to learn and make with FPGAs.

IceStorm currently supports the TinyFPGA B2 and I will be working closely with its creators to implement support for the TinyFPGA BX as well.

If graphical schematic entry is not your thing, you can use your own favorite text editor or try out the APIO-IDE project. APIO-IDE builds on top of PlaformIO-IDE and is a great open-source development environment for FPGAs.

Specs and Docs

Source Code


Design Files

Images courtesy of SparkFun CC BY 2.0.

  • Comments(0)
You can only upload 1 files in total. Each file cannot exceed 2MB. Supports JPG, JPEG, GIF, PNG, BMP
    View More

    You might like

      700 Beans or US $7.00
      BUY NOW
    • TTGO T-Camera ESP32 WROVER & PSRAM Camera Module ESP32-WROVER-B OV2640 Camera Module 0.96 OLED(Fish-eye Lens)
      1800 Beans or US $18.00
      BUY NOW
    • Solar Powered WiFi Weather Station V2.0
      3000 Beans or US $30.00
      BUY NOW
    • Debug Board USB to RS232 Isolated Serial Converter
      1200 Beans or US $12.00
      BUY NOW
    • I2C NavKey: 7 functions joypad on the I2C bus
      1800 Beans or US $18.00
      BUY NOW
    • PogoProg Model B Pogo Pin Programmer - 2 Pack
      700 Beans or US $7.00
      BUY NOW
    • hackaBLE - tiny nRF52832 BLE development board
      1700 Beans or US $17.00
      BUY NOW
    • Bumpy blackmagic probe compatible SWD debugger
      1200 Beans or US $12.00
      BUY NOW
    • Flashlight-I CAN SOLDER KIT 2019 GOLD AWARD
      500 Beans or US $5.00
      BUY NOW
    • Illuminated RGB Encoder
      600 Beans or US $6.00
      BUY NOW
    • I2CEncoder V2.1 Connect multiple encoder on I2C bus
      700 Beans or US $7.00
      BUY NOW
    • Papyr - Nordic nRF52840 epaper display
      3900 Beans or US $39.00
      BUY NOW
    • Arduinoflake Soldering Kit
      2500 Beans or US $25.00
      BUY NOW
    • Deauth Detector V3
      1000 Beans or US $10.00
      BUY NOW
    • Deauther MiNi V2
      1200 Beans or US $12.00
      BUY NOW
    • WiFi Deauther MonsterV3
      3000 Beans or US $30.00
      BUY NOW
    • WiFi Deauther OLED V5
      2500 Beans or US $25.00
      BUY NOW
    • TinyFPGA BX
      3400 Beans or US $34.00
      BUY NOW
    • TinyFPGA AX2
      1600 Beans or US $16.00
      BUY NOW
    • TinyFPGA AX1
      1000 Beans or US $10.00
      BUY NOW
    • TinyFPGA Programmer
      800 Beans or US $8.00
      BUY NOW
    • EspoTek Labrador (Oscilloscope, Signal Gen + More)
      2900 Beans or US $29.00
      BUY NOW
    Product Name
    Link for reference