GW2A-55
GowinArora IIThe GW2A-55 is an Arora II FPGA from Gowin, built on a 55 nm process. It provides 54,720 LUT4 look-up tables, 41,040 flip-flops, 2.5 Mb of block RAM and 40 18×18 multipliers. It offers up to 608 user I/O pins. It is available in 7 packages, from the UG324 (15 × 15 mm) to the PG1156 (35 × 35 mm). Designs are built with Gowin EDA.
Specifications
| Vendor | Gowin |
|---|---|
| Family | Arora II |
| Series | GW2A |
| Process | 55 nm |
| Configuration memory | SRAM |
| LUT4-equivalent capacity | 54,720 |
| Look-up tables (LUT4) | 54,720 |
| Flip-flops | 41,040 |
| Distributed RAM | 106 Kb |
| Block RAM | 2.5 Mb (140 × 18 Kb) |
| DSP (18×18 multiplier) | 40 |
| Max. user I/O | 608 |
|---|---|
| Transceivers | None |
| PCI Express | None |
| Analog / monitor | None |
| Design tool | Gowin EDA |
Packages
| Package | Size (mm) | Pitch (mm) | User I/O | Transceivers |
|---|---|---|---|---|
| PG484 | 23 × 23 | 1.0 | 320 | — |
| PG1156 | 35 × 35 | 1.0 | 608 | — |
| UG324 | 15 × 15 | 0.8 | 240 | — |
| UG324F | 15 × 15 | 0.8 | 240 | — |
| UG324D | 15 × 15 | 0.8 | 240 | — |
| UG484S | 19 × 19 | 0.8 | 345 | — |
| UG676 | 21 × 21 | 0.8 | 526 | — |
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 GW2A-55
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 |
|---|---|---|---|---|---|---|---|
| LFD2NX-35Lattice Certus-NX | 29.2K 29.2K LUT4 | 35K LC | 48 | 1.9 Mb | 371 | 1 SERDES 5 Gb/s | Gen2 |
| LFMXO5-35TLattice MachXO5-NX | 29.2K 29.2K LUT4 | 35K LC | 48 | 1.9 Mb | 371 | 1 SERDES | Gen2 |
| LFE5U-45Lattice ECP5 | 44K 44K LUT4 | — | 72 | 1.9 Mb | 245 | — | — |
| 5CEA4Altera Cyclone V | 37K 18.5K ALMs | 49K LE | 66 | 3 Mb | 224 | — | — |
| XCSU35PAMD Spartan UltraScale+ | 25.6K 16K LUT6 | 36K SLC | 48 | 1.7 Mb | 304 | — | — |
| LIFCL-40Lattice CrossLink-NX | 32.5K 32.5K LUT4 | 39K LC | 56 | 1.5 Mb | 191 | — | Gen2 |
Compare side by side: GW2A-55 vs LFD2NX-35, GW2A-55 vs LFMXO5-35T, GW2A-55 vs LFE5U-45.
GW2A-55 quick facts
How many LUTs does the GW2A-55 have?
The GW2A-55 has 54,720 LUT4 look-up tables, about 54,720 LUT4 equivalents.
How many DSP blocks does the GW2A-55 have?
The GW2A-55 has 40 18×18 multipliers and 2.5 Mb of block RAM.
Does the GW2A-55 have transceivers?
No, the GW2A-55 has no multi-gigabit transceivers. Its user I/O supports up to 608 pins.
What are the alternatives to the GW2A-55?
Devices of similar size in other families include LFD2NX-35 (Lattice Certus-NX), LFMXO5-35T (Lattice MachXO5-NX), LFE5U-45 (Lattice ECP5).
Which software is used to design with the GW2A-55?
Designs for the GW2A-55 are built with Gowin EDA.
Other Arora II devices
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| GW2AN-9X | 10.4K 10.4K LUT4 | — | — | 0.5 Mb | 389 | — | — |
| GW2A-18 | 20.7K 20.7K LUT4 | — | 48 | 0.8 Mb | 384 | — | — |
| GW2AN-18X | 20.7K 20.7K LUT4 | — | — | 0.5 Mb | 389 | — | — |
| GW2AR-18 | 20.7K 20.7K LUT4 | — | 48 | 0.8 Mb | 384 | — | — |
| GW2ANR-18 | 20.7K 20.7K LUT4 | — | 48 | 0.8 Mb | 384 | — | — |
| GW2A-55 | 54.7K 54.7K LUT4 | — | 40 | 2.5 Mb | 608 | — | — |
| GW2AN-55 | 54.7K 54.7K LUT4 | — | — | 2.5 Mb | 608 | — | — |
Source: Gowin Arora II product page, retrieved 2026-10-24. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.