FFFE/互通料號 (形式，腳位和功能對等)
| IC 編號 | 脚位/封装 | 電壓(伏) | 速度 | 溫度規格 |
|---|---|---|---|---|
| AT28C64-20PC | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64-20PU | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C6415PC0204 | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64B-20P | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64B-20PC | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64B20JCPLCC | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64E-20PC | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |
| AT28C64X20PC | PDIP-28 | 5.0 V | 200 NS | 0 C~+70 C |