1PCS ATMEL AT89C2051 AT89C2051-24PU 8-bit Microcontroller with 2K Bytes Flash

20PCS AT89C52-24JI PLCC-44 AT89C52 8-Bit Microcontroller with 8K Bytes Flash

1PCS AT89S52-24PU 8-bit Microcontroller with 8K Bytes Flash

1X AT89C51-20JC 8-Bit Microcontroller with 4K Bytes Flash AT89C51 PLCC

Atmel AT89C51RC-24AU-TW (8051,8031) Flash microcontroller QFP44

5 PCS AT89S52-24JU PLCC-44 89S52 8-bit Microcontroller with Programmable Flash

1/5PCS AT89C51RC-24PI 40PINS 8-bit Microcontroller with 32K Bytes Flash IC

10 x AT89C2051-24SI - Microcontroller IC 8-Bit 24MHz 2KB (2K x 8) FLASH 20-SOIC