| 925921 | M27C4001-90N1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925922 | M27C4001-90N6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925923 | M27C4001-90N6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925924 | M27C4001-90N6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925925 | M27C4001-90N6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925926 | M27C4001-90XB1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925927 | M27C4001-90XB1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925928 | M27C4001-90XB1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925929 | M27C4001-90XB6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925930 | M27C4001-90XB6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925931 | M27C4001-90XB6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925932 | M27C4001-90XC1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925933 | M27C4001-90XC1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925934 | M27C4001-90XC1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925935 | M27C4001-90XC1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925936 | M27C4001-90XC6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925937 | M27C4001-90XC6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925938 | M27C4001-90XC6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925939 | M27C4001-90XC6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
|
| 925940 | M27C4001-90XF1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925941 | M27C4001-90XF1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925942 | M27C4001-90XF1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925943 | M27C4001-90XF6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925944 | M27C4001-90XF6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925945 | M27C4001-90XF6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925946 | M27C4001-90XL1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925947 | M27C4001-90XL1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925948 | M27C4001-90XL1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925949 | M27C4001-90XL1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925950 | M27C4001-90XL6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925951 | M27C4001-90XL6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925952 | M27C4001-90XL6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925953 | M27C4001-90XL6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925954 | M27C4001-90XN1TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925955 | M27C4001-90XN1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925956 | M27C4001-90XN1X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925957 | M27C4001-90XN1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925958 | M27C4001-90XN6TR | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
| 925959 | M27C4001-90XN6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925960 | M27C4001-90XN6X | 4 Mbit (512Kb x 8) EPROM, 90ns | SGS Thomson Microelectronics |
