| No. | Nome della parte | Descrizione | Fabbricatore |
| 680321 | M27C512-25XB1 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680322 | M27C512-25XB1 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680323 | M27C512-25XB1TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680324 | M27C512-25XB1X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680325 | M27C512-25XB3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680326 | M27C512-25XB3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680327 | M27C512-25XB3 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680328 | M27C512-25XB3TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680329 | M27C512-25XB3X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680330 | M27C512-25XB6 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680331 | M27C512-25XB6 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680332 | M27C512-25XB6 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680333 | M27C512-25XB6TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680334 | M27C512-25XB6X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680335 | M27C512-25XC1 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680336 | M27C512-25XC1 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680337 | M27C512-25XC1 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680338 | M27C512-25XC1TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680339 | M27C512-25XC1TR | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680340 | M27C512-25XC1X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680341 | M27C512-25XC3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680342 | M27C512-25XC3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680343 | M27C512-25XC3 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680344 | M27C512-25XC3TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680345 | M27C512-25XC3TR | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680346 | M27C512-25XC3X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680347 | M27C512-25XC6 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680348 | M27C512-25XC6 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680349 | M27C512-25XC6 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680350 | M27C512-25XC6TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680351 | M27C512-25XC6TR | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680352 | M27C512-25XC6X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680353 | M27C512-25XF1 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680354 | M27C512-25XF1 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680355 | M27C512-25XF1 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
| 680356 | M27C512-25XF1TR | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680357 | M27C512-25XF1X | 512 Kbit 64Kb x8 EPROM ed OTP UV EPROM | ST Microelectronics |
| 680358 | M27C512-25XF3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680359 | M27C512-25XF3 | 512 Kbit (64K x8) EPROM UV ed OTP EPROM | ST Microelectronics |
| 680360 | M27C512-25XF3 | 512 KBytes (64 KB x 8) EPROM, 5V, 250ns | SGS Thomson Microelectronics |
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