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| PartNumber | AT27C1024-90JI | AT27C1024-90JC | AT27C1024-90PC |
| Description | IC EPROM 1M PARALLEL 44PLCC | IC EPROM 1M PARALLEL 44PLCC | IC EPROM 1M PARALLEL 40DIP |
| Manufacturer | Atmel | - | - |
| Product Category | Memory | - | - |
| Series | - | - | - |
| Packaging | Tube | - | - |
| Package Case | 44-LCC (J-Lead) | - | - |
| Operating Temperature | -40°C ~ 85°C (TC) | - | - |
| Interface | Parallel | - | - |
| Voltage Supply | 4.5 V ~ 5.5 V | - | - |
| Supplier Device Package | 44-PLCC (16.59x16.59) | - | - |
| Memory Size | 1M (64K x 16) | - | - |
| Memory Type | EPROM OTP | - | - |
| Speed | 90ns | - | - |
| Format Memory | EPROMs | - | - |