| 925001 | M27C256B-70XF1 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925002 | M27C256B-70XF1 | 256 KBIT (32KB X8) UV EPROM AND OTP EPROM | ST Microelectronics |
| 925003 | M27C256B-70XF1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925004 | M27C256B-70XF1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925005 | M27C256B-70XF3 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925006 | M27C256B-70XF3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925007 | M27C256B-70XF3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925008 | M27C256B-70XF6 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925009 | M27C256B-70XF6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925010 | M27C256B-70XF6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925011 | M27C256B-70XF7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925012 | M27C256B-70XF7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925013 | M27C256B-70XN1 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925014 | M27C256B-70XN1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925015 | M27C256B-70XN1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925016 | M27C256B-70XN1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925017 | M27C256B-70XN3 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925018 | M27C256B-70XN3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925019 | M27C256B-70XN3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
|
| 925020 | M27C256B-70XN3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925021 | M27C256B-70XN6 | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925022 | M27C256B-70XN6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 70ns | SGS Thomson Microelectronics |
| 925023 | M27C256B-70XN6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925024 | M27C256B-70XN6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925025 | M27C256B-70XN7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925026 | M27C256B-70XN7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925027 | M27C256B-80B1 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 925028 | M27C256B-80B1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925029 | M27C256B-80B1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925030 | M27C256B-80B3 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 925031 | M27C256B-80B3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925032 | M27C256B-80B3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925033 | M27C256B-80B6 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 925034 | M27C256B-80B6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925035 | M27C256B-80B6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925036 | M27C256B-80B7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925037 | M27C256B-80B7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 925038 | M27C256B-80C1 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 925039 | M27C256B-80C1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 925040 | M27C256B-80C1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
