LCMXO2-640U
LatticeMachXO2The LCMXO2-640U is a MachXO2 FPGA from Lattice, built on a 65 nm process. It provides 640 LUT4 look-up tables, 0.1 Mb of block RAM, with no hard multipliers. It offers up to 107 user I/O pins. It comes in a single package, the TQFP144 (20 × 20 mm). Temperature grades: commercial, industrial. Designs are built with Lattice Diamond.
Specifications
| Vendor | Lattice |
|---|---|
| Family | MachXO2 |
| Series | MachXO |
| Process | 65 nm |
| Configuration memory | Internal flash |
| LUT4-equivalent capacity | 640 |
| Look-up tables (LUT4) | 640 |
| Distributed RAM | 5 Kb |
| Block RAM | 0.1 Mb (7 × 9 Kb) |
| User flash memory | 64 Kb |
| DSP (18×18 multiplier) | None |
| Max. user I/O | 107 |
|---|---|
| Transceivers | None |
| PCI Express | None |
| Analog / monitor | None |
| Design tool | Lattice Diamond |
Packages
| Package | Size (mm) | Pitch (mm) | User I/O | Transceivers |
|---|---|---|---|---|
| TQFP144 | 20 × 20 | 0.5 | 107 | — |
Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).
Speed and temperature grades
| Temperature grade | Junction range | Speed grades |
|---|---|---|
| Commercial (C) | 0 to 85 °C | — |
| Industrial (I) | −40 to 100 °C | — |
Alternatives to the LCMXO2-640U
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 |
|---|---|---|---|---|---|---|---|
| LCMXO3L-640Lattice MachXO3 | 640 640 LUT4 | — | — | 0.1 Mb | 104 | — | — |
| LCMXO3LF-640Lattice MachXO3 | 640 640 LUT4 | — | — | 0.1 Mb | 104 | — | — |
| LFMXO4-010Lattice MachXO4 | 896 896 LUT4 | 1.1K LC | — | 0.1 Mb | 105 | — | — |
| GW1AN-1Gowin Arora | 1.2K 1.2K LUT4 | — | — | 0.1 Mb | 120 | — | — |
| iCE40HX1KLattice iCE40 LP/HX/LM | 1.3K 1.3K LUT4 | 1.3K LC | — | 0.1 Mb | 98 | — | — |
| iCE40LP1KLattice iCE40 LP/HX/LM | 1.3K 1.3K LUT4 | 1.3K LC | — | 0.1 Mb | 97 | — | — |
Compare side by side: LCMXO2-640U vs LCMXO3L-640, LCMXO2-640U vs LCMXO3LF-640, LCMXO2-640U vs LFMXO4-010.
LCMXO2-640U quick facts
How many LUTs does the LCMXO2-640U have?
The LCMXO2-640U has 640 LUT4 look-up tables, about 640 LUT4 equivalents.
How many DSP blocks does the LCMXO2-640U have?
The LCMXO2-640U has no 18×18 multipliers and 0.1 Mb of block RAM.
Does the LCMXO2-640U have transceivers?
No, the LCMXO2-640U has no multi-gigabit transceivers. Its user I/O supports up to 107 pins.
What are the alternatives to the LCMXO2-640U?
Devices of similar size in other families include LCMXO3L-640 (Lattice MachXO3), LCMXO3LF-640 (Lattice MachXO3), LFMXO4-010 (Lattice MachXO4).
Which software is used to design with the LCMXO2-640U?
Designs for the LCMXO2-640U are built with Lattice Diamond.
Other MachXO2 devices
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| LCMXO2-256 | 256 256 LUT4 | — | — | — | 55 | — | — |
| LCMXO2-640 | 640 640 LUT4 | — | — | 0 Mb | 79 | — | — |
| LCMXO2-640U | 640 640 LUT4 | — | — | 0.1 Mb | 107 | — | — |
| LCMXO2-1200 | 1.3K 1.3K LUT4 | — | — | 0.1 Mb | 107 | — | — |
| LCMXO2-1200U | 1.3K 1.3K LUT4 | — | — | 0.1 Mb | 206 | — | — |
| LCMXO2-2000 | 2.1K 2.1K LUT4 | — | — | 0.1 Mb | 206 | — | — |
| LCMXO2-2000U | 2.1K 2.1K LUT4 | — | — | 0.1 Mb | 278 | — | — |
| LCMXO2-4000 | 4.3K 4.3K LUT4 | — | — | 0.1 Mb | 278 | — | — |
| LCMXO2-7000 | 6.9K 6.9K LUT4 | — | — | 0.2 Mb | 334 | — | — |
Source: Lattice MachXO2 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.