SLG47910 vs iCE40UL1K
A comparison of the Renesas ForgeFPGA SLG47910 and the Lattice iCE40 Ultra iCE40UL1K using the data from both vendors' selection guides.
Side-by-side specifications
| SLG47910 | iCE40UL1K | |
|---|---|---|
| Vendor / family | Renesas ForgeFPGA | Lattice iCE40 Ultra |
| LUTs as published | 1,120 LUT5 | 1,248 LUT4 |
| LUT type | 5-input look-up table | 4-input look-up table |
| LUT4 equivalent (approx.) | ≈1,456 | ≈1,248 |
| CoreScore (SERV cores) | — | — |
| Vendor logic figure | — | — |
| DSP | — DSP blocks | — 16×16 MAC blocks |
| Block RAM | 0 Mb | 0.1 Mb |
| Large RAM | — | — |
| Max. user I/O | 19 | 26 |
| Transceivers | None | None |
| Hard PCI Express | None | None |
| Hard processor | None | None |
| Process | — | 40 nm |
| Configuration memory | Non-volatile (OTP) or SPI flash | NVCM |
| Packages | 1 | 2 |
| Design tool | Renesas Go Configure Software Hub | Lattice iCEcube2 |
Highlighted values are higher. LUT counts are shown as published; the LUT4 equivalent is an approximation to compare different LUT types, see how FPGA vendors count logic. Add up to two more devices to this comparison.
Key differences
The SLG47910 has about 17% more logic capacity (1.5K vs 1.2K LUT4 equivalents).
They use different logic architectures: the SLG47910 is built from LUT5 and the iCE40UL1K from LUT4, so the raw LUT counts (1.1K vs 1.2K) are not directly comparable.
The iCE40UL1K has more on-chip memory (0.1 Mb vs 0 Mb).
Configuration memory: non-volatile (otp) or spi flash on the SLG47910, nvcm on the iCE40UL1K.
The SLG47910 is designed with Renesas Go Configure Software Hub and the iCE40UL1K with Lattice iCEcube2.
Full specifications
See the complete spec sheets with packages and grades: SLG47910 (ForgeFPGA) and iCE40UL1K (iCE40 Ultra).