1PCS AT89S51-24JI 8-bit Microcontroller with 4K Bytes Flash

1PCS AT89C55WD-24PU 8-bit Microcontroller with 20K Bytes Flash

2 PCS AT89S51-24PU DIP-40 8-bit Microcontroller with 4K Bytes Programmable Flash

2 PCS AT89C51RC-24PU DIP-40 AT89C51 8-bit Microcontroller with 32K Bytes Flash

1PCS AT89C51RC-24PI DIP40 8-bit Microcontroller with 32K Bytes Flash ATMEL

10 PCS AT89C4051-24PU DIP-20 AT89C4051 8-bit Microcontroller with 4K Bytes Flash

2 PCS AT89S51-24PU DIP-40 8-bit Microcontroller with 4K Bytes Programmable Flash

2 PCS AT89C4051-24PU DIP-20 AT89C4051 8-bit Microcontroller with 4K Bytes Flash