| PartNumber | EP3C55F780C6N | EP3C55F780C7 | EP3C55F780C6 |
| Description | FPGA - Field Programmable Gate Array FPGA - Cyclone III 3491 LABs 377 IOs | FPGA - Field Programmable Gate Array FPGA - Cyclone III 3491 LABs 377 IOs | FPGA - Field Programmable Gate Array FPGA - Cyclone III 3491 LABs 377 IOs |
| Manufacturer | Intel | Intel | Intel |
| Product Category | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array |
| RoHS | Y | N | N |
| Product | Cyclone III | Cyclone III | Cyclone III |
| Number of Logic Elements | 55856 | 55856 | 55856 |
| Number of Logic Array Blocks LABs | 3491 | 3491 | 3491 |
| Number of I/Os | 377 I/O | 377 I/O | 377 I/O |
| Operating Supply Voltage | 1.15 V to 1.25 V | 1.15 V to 1.25 V | 1.15 V to 1.25 V |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | FBGA-780 | FBGA-780 | FBGA-780 |
| Packaging | Tray | Tray | Tray |
| Series | Cyclone III EP3C55 | Cyclone III EP3C55 | Cyclone III EP3C55 |
| Brand | Intel / Altera | Intel / Altera | Intel / Altera |
| Maximum Operating Frequency | 315 MHz | 315 MHz | 315 MHz |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array |
| Factory Pack Quantity | 36 | 36 | 36 |
| Subcategory | Programmable Logic ICs | Programmable Logic ICs | Programmable Logic ICs |
| Total Memory | 2396160 bit | 2396160 bit | 2396160 bit |
| Tradename | Cyclone III | Cyclone III | Cyclone III |