
| 型号 | 厂家 | 封装 | 批号 |
| AT87C51RD2-SLSUM | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-SLSUL | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-RLTUM | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-RLTUL | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-RDTUM | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-RDTUL | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-3CSUM | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RD2-3CSUL | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RC2-SLSUM | Microchip Technology | 原厂封装 | 22+ |
| AT87C51RC2-SLSUL | Microchip Technology | 原厂封装 | 22+ |