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See Product Specifications
| Part Number: | AT27C256R-55RI |
| Category: | Integrated Circuits (ICs) |
| Subcategory: | Memory |
| Manufacturer: | Microchip Technology |
| Packaging: | Tube |
| Product Status: | Obsolete |
| Memory Type: | Non-Volatile |
| Memory Format: | EPROM |
| Technology: | EPROM - OTP |
| Memory Size: | 256Kb (32K x 8) |
| Memory Interface: | Parallel |
| Clock Frequency: | - |
| Write Cycle Time - Word, Page: | - |
| Access Time: | 55 ns |
| Voltage - Supply: | 4.5V ~ 5.5V |
| Operating Temperature: | -40°C ~ 85°C (TC) |
| Mounting Type: | Surface Mount |
| Package / Case: | 28-SOIC (0.342", 8.69mm Width) |
| Supplier Device Package: | 28-SOIC |
