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| PartNumber | X20C04P | X20C04P-20 | X20C04P-25 |
| Description | Non-Volatile RAM, 512 x 8, 28 Pin, Plastic, DIP | ||
| Manufacturer | Intersil | XICOR | XICOR |
| Product Category | Memory | IC Chips | IC Chips |
| Series | - | - | - |
| Packaging | Tube | - | - |
| Package Case | 28-DIP (0.600", 15.24mm) | - | - |
| Operating Temperature | 0°C ~ 70°C (TA) | - | - |
| Interface | Parallel | - | - |
| Voltage Supply | 4.5 V ~ 5.5 V | - | - |
| Supplier Device Package | 28-PDIP | - | - |
| Memory Size | 4K (512 x 8) | - | - |
| Memory Type | NVSRAM (Non-Volatile SRAM) | - | - |
| Speed | 150ns | - | - |
| Format Memory | RAM | - | - |