LFXP2-40E vs XC6SLX25
A comparison of the Lattice LatticeXP2 LFXP2-40E and the AMD Spartan-6 XC6SLX25 using the data from both vendors' selection guides.
Side-by-side specifications
| LFXP2-40E | XC6SLX25 | |
|---|---|---|
| Vendor / family | Lattice LatticeXP2 | AMD Spartan-6 |
| LUTs as published | 40,000 LUT4 | 15,032 LUT6 |
| LUT type | 4-input look-up table | 6-input look-up table, fracturable into two LUT5 with shared inputs |
| LUT4 equivalent (approx.) | ≈40,000 | ≈24,051 |
| CoreScore (SERV cores) | — | — |
| Vendor logic figure | — | 24,051 LC |
| DSP | 32 18×18 multipliers | 38 DSP48A1 slices |
| Block RAM | 0.9 Mb | 0.9 Mb |
| Large RAM | — | — |
| Max. user I/O | 540 | 266 |
| Transceivers | None | None |
| Hard PCI Express | None | None |
| Hard processor | None | None |
| Process | 90 nm | 45 nm |
| Configuration memory | Internal flash | SRAM |
| Packages | 2 | 3 |
| Design tool | Lattice Diamond | AMD ISE Design Suite |
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 LFXP2-40E has about 66% more logic capacity (40K vs 24.1K LUT4 equivalents).
They use different logic architectures: the LFXP2-40E is built from LUT4 and the XC6SLX25 from LUT6, so the raw LUT counts (40K vs 15K) are not directly comparable.
For arithmetic, the XC6SLX25 has 38 DSP48A1 slices against 32 18×18 multipliers on the LFXP2-40E.
Configuration memory: internal flash on the LFXP2-40E, sram on the XC6SLX25.
The LFXP2-40E is designed with Lattice Diamond and the XC6SLX25 with AMD ISE Design Suite.
Full specifications
See the complete spec sheets with packages and grades: LFXP2-40E (LatticeXP2) and XC6SLX25 (Spartan-6).