| 925881 | M27C4001-80XN1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925882 | M27C4001-80XN1X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS Thomson Microelectronics |
| 925883 | M27C4001-80XN1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925884 | M27C4001-80XN6TR | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS Thomson Microelectronics |
| 925885 | M27C4001-80XN6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925886 | M27C4001-80XN6X | 4 Mbit (512Kb x 8) EPROM, 80ns | SGS Thomson Microelectronics |
| 925887 | M27C4001-80XN6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925888 | M27C4001-90B1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925889 | M27C4001-90B1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925890 | M27C4001-90B1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925891 | M27C4001-90B6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925892 | M27C4001-90B6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925893 | M27C4001-90B6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925894 | M27C4001-90C1 | 4 MBIT (512KB X8) UV EPROM AND OTP ROM | ST Microelectronics |
| 925895 | M27C4001-90C1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925896 | M27C4001-90C1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925897 | M27C4001-90C1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925898 | M27C4001-90C1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925899 | M27C4001-90C6 | 4 MBIT (512KB X8) UV EPROM AND OTP ROM | ST Microelectronics |
|
| 925900 | M27C4001-90C6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925901 | M27C4001-90C6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925902 | M27C4001-90C6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925903 | M27C4001-90C6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925904 | M27C4001-90F1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925905 | M27C4001-90F1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925906 | M27C4001-90F1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925907 | M27C4001-90F6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925908 | M27C4001-90F6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925909 | M27C4001-90F6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925910 | M27C4001-90L1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925911 | M27C4001-90L1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925912 | M27C4001-90L1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925913 | M27C4001-90L1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925914 | M27C4001-90L6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925915 | M27C4001-90L6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925916 | M27C4001-90L6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925917 | M27C4001-90L6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925918 | M27C4001-90N1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925919 | M27C4001-90N1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925920 | M27C4001-90N1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
