| Part name | Description | Manufacturer | Package | Pins | Temp. Range | PDF datasheet |
| M27C4001-12XL6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | LCCC | 32 | -40°C | 85°C | M27C4001-12XL6X datasheet (113K) |
| M27C4001-12XN1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-12XN1TR datasheet (113K) |
| M27C4001-12XN1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | 0°C | 70°C | M27C4001-12XN1X datasheet (113K) |
| M27C4001-12XN6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-12XN6TR datasheet (113K) |
| M27C4001-12XN6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS-Thomson Microelectronics | TSOP | 32 | -40°C | 85°C | M27C4001-12XN6X datasheet (113K) |
| M27C4001-15B1X | 4 Mbit (512Kb x 8) EPROM, 150ns | SGS-Thomson Microelectronics | PDIP | 32 | 0°C | 70°C | M27C4001-15B1X datasheet (113K) |
| M27C4001-15B6X | 4 Mbit (512Kb x 8) EPROM, 150ns | SGS-Thomson Microelectronics | PDIP | 32 | -40°C | 85°C | M27C4001-15B6X datasheet (113K) |
| M27C4001-15C1TR | 4 Mbit (512Kb x 8) EPROM, 150ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-15C1TR datasheet (113K) |
| M27C4001-15C1X | 4 Mbit (512Kb x 8) EPROM, 150ns | SGS-Thomson Microelectronics | PLCC | 32 | 0°C | 70°C | M27C4001-15C1X datasheet (113K) |
| M27C4001-15C6TR | 4 Mbit (512Kb x 8) EPROM, 150ns | SGS-Thomson Microelectronics | PLCC | 32 | -40°C | 85°C | M27C4001-15C6TR datasheet (113K) |
