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| PartNumber | AT27C512R-15JC | AT27C512R-15JI | AT27C512R-15LC |
| Description | IC EPROM 512K PARALLEL 32PLCC | IC EPROM 512K PARALLEL 32PLCC | 64K X 8 UVPROM, 150 ns, CQCC32 |
| Manufacturer | Atmel | Atmel | - |
| Product Category | Memory | Memory | - |
| Series | - | - | - |
| Packaging | Tube | Tube | - |
| Package Case | 32-LCC (J-Lead) | 32-LCC (J-Lead) | - |
| Operating Temperature | 0°C ~ 70°C (TC) | -40°C ~ 85°C (TC) | - |
| Interface | Parallel | Parallel | - |
| Voltage Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | - |
| Supplier Device Package | 32-PLCC | 32-PLCC | - |
| Memory Size | 512K (64K x 8) | 512K (64K x 8) | - |
| Memory Type | EPROM OTP | EPROM OTP | - |
| Speed | 150ns | 150ns | - |
| Format Memory | EPROMs | EPROMs | - |