| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-12F1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | FDIP | 32 | 0°C | 70°C | M27C4001-12F1X datasheet (113K) |
| M27C4001-12F6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | FDIP | 32 | -40°C | 85°C | M27C4001-12F6X datasheet (113K) |
| M27C4001-12L1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-12L1TR datasheet (113K) |
| M27C4001-12L1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | LCCC | 32 | 0°C | 70°C | M27C4001-12L1X datasheet (113K) |
| M27C4001-12L6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-12L6TR datasheet (113K) |
| M27C4001-12L6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-12L6X datasheet (113K) |
| M27C4001-12N1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-12N1TR datasheet (113K) |
| M27C4001-12N1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-12N1X datasheet (113K) |
| M27C4001-12N6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-12N6TR datasheet (113K) |
| M27C4001-12N6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-12N6X datasheet (113K) |
