| 278161 | AT89C2051-24PI | 8-Bit Microcontroller with 2K Bytes Flash | Atmel |
| 278162 | AT89C2051-24SC | 8-Bit Microcontroller with 2K Bytes Flash | Atmel |
| 278163 | AT89C2051-24SI | 8-Bit Microcontroller with 2K Bytes Flash | Atmel |
| 278164 | AT89C2051X2 | 2.7-Volt, 80C31 Microcontroller with 2K bytes Flash, x2 Clock, 20-Pin Package | Atmel |
| 278165 | AT89C4051 | 3Volt, 80C31 Microcontroller with 4K bytes Flash, 20-Pin Package | Atmel |
| 278166 | AT89C4051-12PA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278167 | AT89C4051-12PC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278168 | AT89C4051-12PI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278169 | AT89C4051-12SA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278170 | AT89C4051-12SC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278171 | AT89C4051-12SI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278172 | AT89C4051-24PC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278173 | AT89C4051-24PI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278174 | AT89C4051-24SC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278175 | AT89C4051-24SI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278176 | AT89C51 | 80C31 Microcontroller with 4K bytes Flash. Not recommended for new designs. Use AT89S51. | Atmel |
| 278177 | AT89C51-12 | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278178 | AT89C51-12AA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278179 | AT89C51-12AC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
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| 278180 | AT89C51-12AI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278181 | AT89C51-12JA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278182 | AT89C51-12JC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278183 | AT89C51-12JI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278184 | AT89C51-12PA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278185 | AT89C51-12PC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278186 | AT89C51-12PI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278187 | AT89C51-12QA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278188 | AT89C51-12QC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278189 | AT89C51-12QI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278190 | AT89C51-16AA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278191 | AT89C51-16AC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278192 | AT89C51-16AI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278193 | AT89C51-16JA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278194 | AT89C51-16JC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278195 | AT89C51-16JI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278196 | AT89C51-16PA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278197 | AT89C51-16PC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278198 | AT89C51-16PI | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278199 | AT89C51-16QA | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
| 278200 | AT89C51-16QC | 8-Bit Microcontroller with 4K Bytes Flash | Atmel |
