Larger Gowin Tang board for projects that need substantially more logic than Tang Nano and Primer boards.
GW5AST-LV138FPG676Aprice unknownvideonetworkingdsprisc-v
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Enter board slugs separated by commas, for example: sipeed/tang-nano-20k,icebreaker/icebreaker.
Open-hardware Lattice ECP5 board used for open-source FPGA development, education, LiteX and retro-computing projects.
LFE5U-85F-6BG381Copen toolchainprice unknowneducationvideoretrorisc-v
| Field | Tang Mega 138K | ULX3S |
|---|---|---|
| Chip | GW5AST-LV138FPG676A | LFE5U-85F-6BG381C |
| Family | GW5A | ECP5 |
| Device type | FPGA | FPGA |
| Price | unknown | unknown |
| Toolchains | Gowin EDA | Yosys + nextpnr + Project Trellis |
| Open toolchain | no | yes |
| Interfaces | not verified | Digital video connector, SD card, USB |
| Memory | not verified | SDRAM varies by revision |
| Documentation | 45 | 72 |
| Difficulty | professional | intermediate |
| Openness score | 35 | 95 |
| Where to get help | Sipeed forum | ULX3S project links |
| Typical risks | This entry intentionally avoids detailed connector claims until official board-revision documents are reviewed. | Memory, USB and video details are revision-dependent; check the exact PCB revision. |
| Better for | professional prototyping | open-source flow |