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Lattice iCE40 FPGA Journey

Updated: Mar 17

As part of my post on MCUs, I added a Lattice iCE40 FPGA to the mix. While I have done a little bit of work with FPGAs in the past, it has been purely on the use of development boards (e.g., Digilent Arty). I've now started to dig deeper into FPGA -- from the PCB on up. I will use this post to capture some of my initial journey with the iCE40. Check back for updates! If you have suggestions on anything here, please drop me a note. Thanks!


I'm starting out with a Lattice iCE40HX4K-TQ144.



I upgraded the board to 1MB of SRAM.



I have ordered a couple of ICE40HX8K-CT256 ICs. These use a 256-pin BGA package with a 0.8mm pitch. I am currently researching fanout and routing for this BGA package and JLCPCB capabilities related to BGA routing. Possibly helpful resources:




I've received some very help feedback on my FPGA PCB design and have started a "to do" list below. Look for these changes in future updates. Thank you to everyone who has supplied the great feedback. It helps me learn rapidly and results in a better final solution!











A couple of VGA-related resources:









My Shopping List

This is just a spot for me to note parts I'll need to order to support my to do list. :)


Additional Resources



GitHub Files

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