LIFCL-40 vs XCSU35P
A comparison of the Lattice CrossLink-NX LIFCL-40 and the AMD Spartan UltraScale+ XCSU35P using the data from both vendors' selection guides.
Side-by-side specifications
| LIFCL-40 | XCSU35P | |
|---|---|---|
| Vendor / family | Lattice CrossLink-NX | AMD Spartan UltraScale+ |
| Logic (LUT4-equivalent) | 32,500 | 25,600 |
| LUTs as published | 32,500 LUT4 | 16,000 LUT6 |
| Vendor logic figure | 39,000 LC | 36,000 SLC |
| DSP | 56 18×18 multipliers | 48 DSP slices |
| Block RAM | 1.5 Mb | 1.7 Mb |
| Large RAM | 1 Mb | — |
| Max. user I/O | 191 | 304 |
| Transceivers | None | None |
| Hard PCI Express | Gen2 | None |
| Hard processor | None | None |
| Process | 28 nm | 16 nm |
| Configuration memory | SRAM | SRAM |
| Packages | 5 | 3 |
| Design tool | Lattice Radiant | AMD Vivado |
Highlighted values are higher. Logic is compared in LUT4 equivalents; see how FPGA vendors count logic.
Key differences
The LIFCL-40 has about 27% more logic capacity (32.5K vs 25.6K LUT4 equivalents).
They use different logic architectures: the LIFCL-40 is built from LUT4 and the XCSU35P from LUT6, so the raw LUT counts (32.5K vs 16K) are not directly comparable.
For arithmetic, the LIFCL-40 has 56 18×18 multipliers against 48 DSP slices on the XCSU35P.
The LIFCL-40 has more on-chip memory (2.5 Mb vs 1.7 Mb).
The LIFCL-40 is designed with Lattice Radiant and the XCSU35P with AMD Vivado.
Full specifications
See the complete spec sheets with packages and grades: LIFCL-40 (CrossLink-NX) and XCSU35P (Spartan UltraScale+).