FFFE/互通料号 (形式，腳位和功能对等)
| IC 编号 | 脚位/封装 | 电压(伏) | 速度 | 温度规格 |
|---|---|---|---|---|
| AT27C512R-70/90PC/PI | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R-70/90PU | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R-90IP | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R-90PCDIP | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R-90PI | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R-90PU | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| AT27C512R90PIOTP | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| M27C512-90B6 | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |
| M27C512-90B6(ROHS) | PDIP-28 | 5.0 V | 90 NS | -40 C~+85 C |