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| Part Number | AT27C256R-70PU |
| Datasheet | AT27C256R-70PU datasheet |
| Description | IC EPROM 256K PARALLEL 28DIP |
| Manufacturer | Microchip Technology |
| Series | - |
| Part Status | Active |
| Memory Type | Non-Volatile |
| Memory Format | EPROM |
| Technology | EPROM - OTP |
| Memory Size | 256Kb (32K x 8) |
| Clock Frequency | - |
| Write Cycle Time - Word, Page | - |
| Access Time | 70ns |
| Memory Interface | Parallel |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TC) |
| Mounting Type | Through Hole |
| Package / Case | 28-DIP (0.600", 15.24mm) |
| Supplier Device Package | 28-PDIP |