| PartNumber | XC4VSX35-12FFG668C | XC4VSX55-10FF1148C | XC4VSX55-10FF1148I |
| Description | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | IC FPGA 640 I/O 1148FCBGA |
| Manufacturer | Xilinx | Xilinx | Xilinx Inc. |
| Product Category | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | Embedded - FPGAs (Field Programmable Gate Array) |
| RoHS | Y | - | - |
| Product | Virtex-4 | Virtex-4 | - |
| Number of Logic Elements | 34560 | 55296 | - |
| Number of I/Os | 448 I/O | 640 I/O | - |
| Operating Supply Voltage | 1.2 V | 1.2 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | FBGA-668 | FCBGA-1148 | - |
| Series | XC4VSX35 | XC4VSX55 | VirtexR-4 SX |
| Brand | Xilinx | Xilinx | - |
| Distributed RAM | 240 kbit | 384 kbit | - |
| Embedded Block RAM EBR | 3456 kbit | 5760 kbit | - |
| Maximum Operating Frequency | 500 MHz | 500 MHz | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Programmable Logic ICs | Programmable Logic ICs | - |
| Tradename | Virtex | Virtex | - |
| Package Case | - | - | 1148-BBGA, FCBGA |
| Operating Temperature | - | - | -40°C ~ 100°C (TJ) |
| Mounting Type | - | - | Surface Mount |
| Voltage Supply | - | - | 1.14 V ~ 1.26 V |
| Supplier Device Package | - | - | 1148-FCPBGA (35x35) |
| Number of Gates | - | - | - |
| Number of I O | - | - | 640 |
| Number of LABs CLBs | - | - | 6144 |
| Number of Logic Elements Cells | - | - | 55296 |
| Total RAM Bits | - | - | 5898240 |