| PartNumber | XA3S400-4FGG456I | XA3S400-4FGG456Q | XA3S400-4FTG256I |
| Description | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array |
| Manufacturer | Xilinx | Xilinx | Xilinx |
| Product Category | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array |
| RoHS | Y | Y | Y |
| Product | XA Spartan-3 | XA Spartan-3 | XA Spartan-3 |
| Number of Logic Elements | 8064 | 8064 | 8064 |
| Number of I/Os | 264 I/O | 264 I/O | 173 I/O |
| Operating Supply Voltage | 1.2 V | 1.2 V | 1.2 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 100 C | + 125 C | + 100 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | FBGA-456 | FBGA-456 | FTBGA-256 |
| Series | XA3S400 | XA3S400 | XA3S400 |
| Brand | Xilinx | Xilinx | Xilinx |
| Number of Gates | 400000 | 400000 | 400000 |
| Distributed RAM | 56 kbit | 56 kbit | 56 kbit |
| Embedded Block RAM EBR | 288 kbit | 288 kbit | 288 kbit |
| Maximum Operating Frequency | 125 MHz | 125 MHz | 125 MHz |
| Product Type | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array | FPGA - Field Programmable Gate Array |
| Factory Pack Quantity | 1 | 60 | 90 |
| Subcategory | Programmable Logic ICs | Programmable Logic ICs | Programmable Logic ICs |
| Tradename | Spartan | Spartan | Spartan |