Open-source educational Lattice iCE40UP5K board designed around the Yosys, nextpnr and IceStorm flow.
iCE40UP5K-SG48open toolchainprice unknowneducationcontroldspformal
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Enter board slugs separated by commas, for example: sipeed/tang-nano-20k,icebreaker/icebreaker.
Larger Gowin Tang board for projects that need substantially more logic than Tang Nano and Primer boards.
GW5AST-LV138FPG676Aprice unknownvideonetworkingdsprisc-v
| Field | iCEBreaker | Tang Mega 138K |
|---|---|---|
| Chip | iCE40UP5K-SG48 | GW5AST-LV138FPG676A |
| Family | iCE40 UltraPlus | GW5A |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Yosys + nextpnr + IceStorm, Lattice Diamond Programmer | Gowin EDA |
| Open toolchain | yes | no |
| Interfaces | microUSB FT2232H, FT2232H programming, USB serial | not verified |
| Memory | QSPI flash 128 Mbit | not verified |
| Documentation | 82 | 45 |
| Difficulty | beginner | professional |
| Openness score | 96 | 35 |
| Where to get help | iCEBreaker community docs | Sipeed forum |
| Typical risks | Check add-on pinout and exact hardware revision before connecting Pmods. | This entry intentionally avoids detailed connector claims until official board-revision documents are reviewed. |
| Better for | open-source flow | professional prototyping |