- AT89S51-24ACIC 8051 MCU 4K FLASH 44 TQFP|ATMEL|Lead All|RoHS Mixed
- AT89S51-24AIIC 8051 MCU 4K FLASH 44TQFP|ATMEL|Lead All|RoHS Mixed
- AT89S51-24JIIC 8051 MCU 4K FLASH 44PLCC|ATMEL|Lead All|RoHS Mixed
- AT89S51-24PCIC 8051 MCU 4K FLASH 40-DIP|ATMEL|Lead All|RoHS Mixed
- AT89S51-24PIIC 8051 MCU 4K FLASH 40-DIP|ATMEL|Lead All|RoHS Mixed