AT89S52-24PU Microcontroller: Diagram, Pinout, and Datasheet
AT89S52-24PU
My TechnoCare AT89S52 IC ATMEL 8051 Microcontroller Chip + 40 Pin DIP Mount IC Socket | 8 Bit Microprocessor 8Kb ISP(in System Programming) Flash Memory Up to 33MHz Clock Frequency Speed :
AT89S52 Microcontroller Pinout, Pin Configuration, Features & Datasheet