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| Part Number | UPD554 |
| Description | 4-BIT SINGLE CHIP MICROCOMPUTER |
| Info | NEe Microcomputers, Inc. 4-81T SINGLE CHIP MICROCO. |
| Manufacture | NEC |
| for PC | Download UPD554 Datasheet |
| Part Number | UPD554L |
| Description | 4-BIT SINGLE CHIP MICROCOMPUTER |
| Info | NEe Microcomputers, Inc. 4-81T SINGLE CHIP MICROCO. |
| Manufacture | NEC |
| for PC | Download UPD554L Datasheet |