| Nr. | Part Name | Description | Manufacturer by |
| 677841 | M27C256B-15F6 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677842 | M27C256B-15F6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677843 | M27C256B-15F6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677844 | M27C256B-15F7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677845 | M27C256B-15F7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677846 | M27C256B-15N1 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677847 | M27C256B-15N1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677848 | M27C256B-15N1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677849 | M27C256B-15N1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677850 | M27C256B-15N3 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677851 | M27C256B-15N3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677852 | M27C256B-15N3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677853 | M27C256B-15N3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677854 | M27C256B-15N6 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677855 | M27C256B-15N6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677856 | M27C256B-15N6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677857 | M27C256B-15N6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677858 | M27C256B-15N7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677859 | M27C256B-15N7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677860 | M27C256B-15XB1 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677861 | M27C256B-15XB1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677862 | M27C256B-15XB1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677863 | M27C256B-15XB3 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677864 | M27C256B-15XB3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677865 | M27C256B-15XB3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677866 | M27C256B-15XB6 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677867 | M27C256B-15XB6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677868 | M27C256B-15XB6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677869 | M27C256B-15XB7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677870 | M27C256B-15XB7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677871 | M27C256B-15XC1 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677872 | M27C256B-15XC1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677873 | M27C256B-15XC1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677874 | M27C256B-15XC1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677875 | M27C256B-15XC3 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677876 | M27C256B-15XC3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677877 | M27C256B-15XC3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677878 | M27C256B-15XC3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 677879 | M27C256B-15XC6 | 256 Kbit (32Kb x 8) EPROM, 5V, 150ns | SGS Thomson Microelectronics |
| 677880 | M27C256B-15XC6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
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