ATMEL
| n.n. | Model | Package | Additional description |
| 1 | AT27HC642R-35DC | CDIP-24 with window | 9418; PHILIPPINES |
| 2 | TS80C31X2-MCB | PLCC-44 | 0345; 47065C |
| 3 | AT89C51-20PI | PDIP-40 | 9834 |
| 4 | AT89C51-24PI | PDIP-40 | 9925 |
| 5 | AT89C51RC2-IM | PLCC-44 | 0419; 03184B |
| 6 | AT89C52-24PC | PDIP-40 | 0637; TAIWAN |
| 7 | AT89C2051-24PC | PDIP-20 | 00 45 |
| 8 | AT89C2051-24PI | PDIP-20 | 02 21 |
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| 1 | 2 | 3 | AT89C51-20PI | ||||
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| 4 | 5 | 6 | AT89C52-24PC | ||||
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| 7 | 8 | ||||||
