| 924921 | M27C256B-60XN6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924922 | M27C256B-60XN7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924923 | M27C256B-60XN7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924924 | M27C256B-70B1 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924925 | M27C256B-70B1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924926 | M27C256B-70B1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924927 | M27C256B-70B3 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924928 | M27C256B-70B3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924929 | M27C256B-70B3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924930 | M27C256B-70B6 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924931 | M27C256B-70B6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924932 | M27C256B-70B6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924933 | M27C256B-70B7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924934 | M27C256B-70B7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924935 | M27C256B-70C1 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924936 | M27C256B-70C1 | 256 KBIT (32KB X8) UV EPROM AND OTP EPROM | ST Microelectronics |
| 924937 | M27C256B-70C1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924938 | M27C256B-70C1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924939 | M27C256B-70C1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
|
| 924940 | M27C256B-70C3 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924941 | M27C256B-70C3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924942 | M27C256B-70C3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924943 | M27C256B-70C3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924944 | M27C256B-70C6 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924945 | M27C256B-70C6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924946 | M27C256B-70C6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924947 | M27C256B-70C6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924948 | M27C256B-70C7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924949 | M27C256B-70C7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924950 | M27C256B-70F1 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924951 | M27C256B-70F1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924952 | M27C256B-70F1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924953 | M27C256B-70F3 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924954 | M27C256B-70F3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924955 | M27C256B-70F3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924956 | M27C256B-70F6 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 924957 | M27C256B-70F6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924958 | M27C256B-70F6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924959 | M27C256B-70F7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924960 | M27C256B-70F7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
