T55
EfinixTrionThe T55 is a Trion FPGA from Efinix, built on a 40 nm process. It provides 54,195 logic elements (LEs) (Efinix does not publish the LUT count for this device), 2.7 Mb of block RAM and 150 18×18 multipliers. It offers up to 278 user I/O pins. It is available in 3 packages, from the FBGA324 (12 × 12 mm) to the FBGA484 (18 × 18 mm). Designs are built with Efinix Efinity.
Specifications
| Vendor | Efinix |
|---|---|
| Family | Trion |
| Series | Trion |
| Process | 40 nm |
| Configuration memory | SRAM |
| LUT4-equivalent capacity | ≈54,195 (from LEs) |
| Look-up tables (LUT4) | Not published |
| LUT note | Efinix only publishes logic elements (LEs) for this device, an equivalent unit that is not a LUT count |
| Logic elements (LEs) | 54,195 |
| Block RAM | 2.7 Mb |
| DSP (18×18 multiplier) | 150 |
| Max. user I/O | 278 |
|---|---|
| Transceivers | None |
| PCI Express | None |
| Hard memory controller | DDR3, LPDDR3, LPDDR2 x32 |
| Analog / monitor | None |
| Design tool | Efinix Efinity |
Packages
| Package | Size (mm) | Pitch (mm) | User I/O | Transceivers |
|---|---|---|---|---|
| FBGA324 | 12 × 12 | 0.65 | 130 | — |
| FBGA484 | 18 × 18 | 0.8 | 256 | — |
| FBGA576 | 16 × 16 | 0.65 | 278 | — |
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 T55
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 |
|---|---|---|---|---|---|---|---|
| 10CL055Altera Cyclone 10 LP | 55K 55K LUT4 | 55K LE | 156 | 2.3 Mb | 321 | — | — |
| EP4CE55Altera Cyclone IV | 56K 56K LUT4 | 56K LE | 154 | 2.3 Mb | 374 | — | — |
| XC7S50AMD Spartan-7 | 52.2K 32.6K LUT6 | 52.2K LC | 120 | 2.6 Mb | 250 | — | — |
| Tz50Efinix Topaz | 55.8K 55.8K LUT4 | 52.2K LE | 140 | 2.4 Mb | 169 | — | — |
| Ti60Efinix Titanium | 60.8K 60.8K LUT4 | 62K LE | 160 | 2.6 Mb | 169 | — | — |
| GW5A-60Gowin Arora V | 59.9K 59.9K LUT4 | — | 118 | 2.1 Mb | 320 | — | — |
Compare side by side: T55 vs 10CL055, T55 vs EP4CE55, T55 vs XC7S50, T55 vs Ti60.
T55 quick facts
How much logic does the T55 have?
Efinix publishes 54,195 logic elements (les) for the T55; it does not publish the LUT count.
How many DSP blocks does the T55 have?
The T55 has 150 18×18 multipliers and 2.7 Mb of block RAM.
Does the T55 have transceivers?
No, the T55 has no multi-gigabit transceivers. Its user I/O supports up to 278 pins.
What are the alternatives to the T55?
Devices of similar size in other families include 10CL055 (Altera Cyclone 10 LP), EP4CE55 (Altera Cyclone IV), XC7S50 (AMD Spartan-7).
Which software is used to design with the T55?
Designs for the T55 are built with Efinix Efinity.
Other Trion devices
| Device | LUT4-eq. | Vendor logic | DSP | Block RAM | Max I/O | Transceivers | PCIe |
|---|---|---|---|---|---|---|---|
| T4 | ≈3.9K 3.9K LEs | 3.9K LE | 4 | 0.1 Mb | 55 | — | — |
| T8 | ≈7.4K 7.4K LEs | 7.4K LE | 8 | 0.1 Mb | 97 | — | — |
| T13 | ≈12.8K 12.8K LEs | 12.8K LE | 24 | 0.7 Mb | 195 | — | — |
| T20 | ≈19.7K 19.7K LEs | 19.7K LE | 36 | 1 Mb | 230 | — | — |
| T35 | ≈31.7K 31.7K LEs | 31.7K LE | 120 | 1.4 Mb | 230 | — | — |
| T55 | ≈54.2K 54.2K LEs | 54.2K LE | 150 | 2.7 Mb | 278 | — | — |
| T85 | ≈84.1K 84.1K LEs | 84.1K LE | 240 | 4 Mb | 278 | — | — |
| T120 | ≈112K 112K LEs | 112K LE | 320 | 5.3 Mb | 278 | — | — |
Source: Efinix Trion product page and device data sheets, retrieved 2026-10-24. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.