LFE5UM5G-85
LatticeECP5The LFE5UM5G-85 is an ECP5 FPGA from Lattice, built on a 40 nm process. It provides 84,000 LUT4 look-up tables, 3.7 Mb of block RAM and 156 18×18 multipliers. It offers up to 365 user I/O pins and 4 SERDES transceivers at up to 5 Gb/s. It is available in 4 packages, from the csfBGA285 (10 × 10 mm) to the caBGA756 (27 × 27 mm). Designs are built with Lattice Diamond.
Specifications
| Vendor | Lattice |
|---|---|
| Family | ECP5 |
| Series | ECP5 |
| Process | 40 nm |
| Configuration memory | SRAM |
| LUT4-equivalent capacity | 84,000 |
| Look-up tables (LUT4) | 84,000 |
| Distributed RAM | 669 Kb |
| Block RAM | 3.7 Mb (208 × 18 Kb) |
| DSP (18×18 multiplier) | 156 |
| Max. user I/O | 365 |
|---|---|
| SERDES transceivers | 4 × 5 Gb/s |
| PCI Express | None |
| Analog / monitor | None |
| Design tool | Lattice Diamond |
Packages
| Package | Size (mm) | Pitch (mm) | User I/O | Transceivers |
|---|---|---|---|---|
| csfBGA285 | 10 × 10 | 0.5 | 118 | 2 |
| caBGA381 | 17 × 17 | 0.8 | 205 | 4 |
| caBGA554 | 23 × 23 | 0.8 | 259 | 4 |
| caBGA756 | 27 × 27 | 0.8 | 365 | 4 |
Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).
Alternatives to the LFE5UM5G-85
Closest matches in other families and vendors by logic, DSP, memory, I/O and transceivers. Check pin compatibility and tools before migrating.
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| XCSU100PAMD Spartan UltraScale+ | 73.6K 46K LUT6 | 101K SLC | 144 | 5.1 Mb | 478 | 4 GTH 16.3 Gb/s | Gen4 |
| XC7A75TAMD Artix-7 | 75.5K 47.2K LUT6 | 75.5K LC | 180 | 3.7 Mb | 300 | 8 GTP 6.6 Gb/s | Gen2 |
| 5CGXC5Altera Cyclone V | 58.2K 29.1K ALMs | 77K LE | 150 | 4.4 Mb | 336 | 6 XCVR 3.125 Gb/s | Gen1 |
| 5CGTD5Altera Cyclone V | 58.2K 29.1K ALMs | 77K LE | 150 | 4.4 Mb | 336 | 6 XCVR 6.144 Gb/s | Gen2 |
| EP4CGX75Altera Cyclone IV | 74K 74K LUT4 | 74K LE | 198 | 4.1 Mb | 310 | 8 XCVR 3.125 Gb/s | Gen2 |
| GW5AT-75Gowin Arora V | 86.7K 86.7K LUT4 | — | 213 | 4.5 Mb | 312 | 8 SERDES 12.5 Gb/s | Gen3 |
Compare side by side: LFE5UM5G-85 vs XCSU100P, LFE5UM5G-85 vs XC7A75T, LFE5UM5G-85 vs 5CGXC5.
LFE5UM5G-85 quick facts
How many LUTs does the LFE5UM5G-85 have?
The LFE5UM5G-85 has 84,000 LUT4 look-up tables, about 84,000 LUT4 equivalents.
How many DSP blocks does the LFE5UM5G-85 have?
The LFE5UM5G-85 has 156 18×18 multipliers and 3.7 Mb of block RAM.
Does the LFE5UM5G-85 have transceivers?
Yes, 4 SERDES transceivers at up to 5 Gb/s.
What are the alternatives to the LFE5UM5G-85?
Devices of similar size in other families include XCSU100P (AMD Spartan UltraScale+), XC7A75T (AMD Artix-7), 5CGXC5 (Altera Cyclone V).
Which software is used to design with the LFE5UM5G-85?
Designs for the LFE5UM5G-85 are built with Lattice Diamond.
Other ECP5 devices
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| LFE5U-12 | 12K 12K LUT4 | — | 28 | 0.6 Mb | 197 | — | — |
| LFE5UM-25 | 24K 24K LUT4 | — | 28 | 1 Mb | 197 | 2 SERDES 3.2 Gb/s | — |
| LFE5UM5G-25 | 24K 24K LUT4 | — | 28 | 1 Mb | 197 | 2 SERDES 5 Gb/s | — |
| LFE5U-25 | 24K 24K LUT4 | — | 28 | 1 Mb | 197 | — | — |
| LFE5UM-45 | 44K 44K LUT4 | — | 72 | 1.9 Mb | 245 | 4 SERDES 3.2 Gb/s | — |
| LFE5UM5G-45 | 44K 44K LUT4 | — | 72 | 1.9 Mb | 245 | 4 SERDES 5 Gb/s | — |
| LFE5U-45 | 44K 44K LUT4 | — | 72 | 1.9 Mb | 245 | — | — |
| LFE5UM-85 | 84K 84K LUT4 | — | 156 | 3.7 Mb | 365 | 4 SERDES 3.2 Gb/s | — |
| LFE5UM5G-85 | 84K 84K LUT4 | — | 156 | 3.7 Mb | 365 | 4 SERDES 5 Gb/s | — |
| LFE5U-85 | 84K 84K LUT4 | — | 156 | 3.7 Mb | 365 | — | — |
Source: Lattice ECP5 product page, Family Table, retrieved 2026-10-24. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.