| 915321 | M27C256B-80B7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915322 | M27C256B-80B7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915323 | M27C256B-80C1 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915324 | M27C256B-80C1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915325 | M27C256B-80C1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915326 | M27C256B-80C1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915327 | M27C256B-80C3 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915328 | M27C256B-80C3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915329 | M27C256B-80C3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915330 | M27C256B-80C3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915331 | M27C256B-80C6 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915332 | M27C256B-80C6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915333 | M27C256B-80C6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915334 | M27C256B-80C6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915335 | M27C256B-80C7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915336 | M27C256B-80C7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915337 | M27C256B-80F1 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915338 | M27C256B-80F1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915339 | M27C256B-80F1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
|
| 915340 | M27C256B-80F3 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915341 | M27C256B-80F3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915342 | M27C256B-80F3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915343 | M27C256B-80F6 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915344 | M27C256B-80F6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915345 | M27C256B-80F6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915346 | M27C256B-80F7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915347 | M27C256B-80F7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915348 | M27C256B-80N1 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915349 | M27C256B-80N1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915350 | M27C256B-80N1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915351 | M27C256B-80N1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915352 | M27C256B-80N3 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915353 | M27C256B-80N3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915354 | M27C256B-80N3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915355 | M27C256B-80N3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915356 | M27C256B-80N6 | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915357 | M27C256B-80N6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 80ns | SGS Thomson Microelectronics |
| 915358 | M27C256B-80N6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915359 | M27C256B-80N6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 915360 | M27C256B-80N7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
