| PartNumber | XC4020XL-3HT144C | XC4020XL-3HT176C | XC4020XL-3HT144I |
| Description | IC FPGA 145 I/O 176TQFP | IC FPGA 113 I/O 144HQFP | |
| Manufacturer | Xilinx Inc. | Xilinx Inc. | Xilinx Inc. |
| Product Category | Embedded - FPGAs (Field Programmable Gate Array) | Embedded - FPGAs (Field Programmable Gate Array) | Embedded - FPGAs (Field Programmable Gate Array) |
| Series | XC4000E/X | XC4000E/X | XC4000E/X |
| Package Case | 144-LQFP Exposed Pad | 176-LQFP Exposed Pad | 144-LQFP Exposed Pad |
| Operating Temperature | 0°C ~ 85°C (TJ) | 0°C ~ 85°C (TJ) | -40°C ~ 100°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Voltage Supply | 3 V ~ 3.6 V | 3 V ~ 3.6 V | 3 V ~ 3.6 V |
| Supplier Device Package | 144-TQFP (20x20) | 176-TQFP (24x24) | 144-TQFP (20x20) |
| Number of Gates | 20000 | 20000 | 20000 |
| Number of I O | 113 | 145 | 113 |
| Number of LABs CLBs | 784 | 784 | 784 |
| Number of Logic Elements Cells | 1862 | 1862 | 1862 |
| Total RAM Bits | 25088 | 25088 | 25088 |