| 925641 | M27C4001-45XC6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925642 | M27C4001-45XC6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925643 | M27C4001-45XC6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925644 | M27C4001-45XF1 | 4 MBIT (512KB X8) UV EPROM AND OTP ROM | ST Microelectronics |
| 925645 | M27C4001-45XF1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925646 | M27C4001-45XF1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925647 | M27C4001-45XF1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925648 | M27C4001-45XF6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925649 | M27C4001-45XF6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925650 | M27C4001-45XF6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925651 | M27C4001-45XL1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925652 | M27C4001-45XL1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925653 | M27C4001-45XL1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925654 | M27C4001-45XL1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925655 | M27C4001-45XL6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925656 | M27C4001-45XL6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925657 | M27C4001-45XL6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925658 | M27C4001-45XL6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925659 | M27C4001-45XN1TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
|
| 925660 | M27C4001-45XN1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925661 | M27C4001-45XN1X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925662 | M27C4001-45XN1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925663 | M27C4001-45XN6TR | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925664 | M27C4001-45XN6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925665 | M27C4001-45XN6X | 4 Mbit (512Kb x 8) EPROM, 45ns | SGS Thomson Microelectronics |
| 925666 | M27C4001-45XN6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925667 | M27C4001-55B1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925668 | M27C4001-55B1X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925669 | M27C4001-55B1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925670 | M27C4001-55B6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925671 | M27C4001-55B6X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925672 | M27C4001-55B6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925673 | M27C4001-55C1 | 4 MBIT (512KB X8) UV EPROM AND OTP ROM | ST Microelectronics |
| 925674 | M27C4001-55C1TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925675 | M27C4001-55C1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925676 | M27C4001-55C1X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925677 | M27C4001-55C1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925678 | M27C4001-55C6TR | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
| 925679 | M27C4001-55C6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925680 | M27C4001-55C6X | 4 Mbit (512Kb x 8) EPROM, 55ns | SGS Thomson Microelectronics |
