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| PartNumber | M27C4001-80N6 | M27C4001-80XF1 | M27C4001-90C1 |
| Description | IC EPROM 4M PARALLEL 32TSOP | IC EPROM 4M PARALLEL 32CDIP | IC EPROM 4M PARALLEL 32PLCC |
| Manufacturer | STMicroelectronics | STM | STMicroelectronics |
| Product Category | Memory | Memory | Memory |
| Series | - | - | - |
| Packaging | Tube | Tube | Tube |
| Package Case | 32-TFSOP (0.724", 18.40mm Width) | 32-CDIP (0.600", 15.24mm) Window | 32-LCC (J-Lead) |
| Operating Temperature | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Interface | Parallel | Parallel | Parallel |
| Voltage Supply | 4.5 V ~ 5.5 V | 4.75 V ~ 5.25 V | 4.5 V ~ 5.5 V |
| Supplier Device Package | 32-TSOP | 32-CDIP Frit Seal with Window | 32-PLCC (11.35x13.89) |
| Memory Size | 4M (512K x 8) | 4M (512K x 8) | 4M (512K x 8) |
| Memory Type | EPROM OTP | EPROM UV | EPROM OTP |
| Speed | 80ns | 80ns | 90ns |
| Format Memory | EPROMs | EPROMs | EPROMs |