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AT89S52 8051 Microcontroller Atmel 40 Pin IC


The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. The device is manufactured using Atmel?s high-density nonvolatile memory technology and is compatible with the industry- standard 80C51 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

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The AT89S52 8051 Microcontroller Atmel 40 Pin ICis a versatile 8-bit microcontroller IC from Atmel, belonging to the popular 8051 family. It is known for its robust capabilities and is widely used in various embedded systems and control applications.


  • 8-Bit Processor: AT89S52 uses an 8-bit microprocessor additionally processing data efficiently in 8-bit chunks.
  • ROM and RAM: Equipped with built-in Read-Only Memory (ROM) and Random-Access Memory (RAM) for simplified data management.
  • I/O Ports: Multiple Input/Output (I/O) ports enable seamless interfacing with external devices, sensors, and peripherals.
  • Timers and Counters: Includes timers and counters for precise time measurement and also event counting.
  • Serial Communication: Integrated serial communication ports (UART) for easy device and also peripheral communication.


  • Embedded Systems: AT89S52 is the core of many embedded systems additionally controlling functions in appliances, automotive systems, and consumer electronics.
  • Industrial Automation: Used in industrial automation to control machinery, process data, and monitor sensors for efficient manufacturing.
  • IoT Devices: Empowers connectivity and control in smart devices and sensors within the Internet of Things (IoT).
  • Automotive Control: Manages engine control units (ECUs), airbag systems, and various vehicle functions in automobiles.
  • Remote Control: Found in remote controls for televisions, home theaters, and electronic devices.
  • Home Automation: Crucial for controlling lights, security, and climate systems in home automation.

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Weight 0.2 kg


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