AT89S52 Microcontroller

AT89S52 Microcontroller 

The AT89S52 is an 8-bit microcontroller from the 8051 family, developed by Atmel (now Microchip Technology). It is widely used for embedded control applications that require reliable performance, moderate program memory, and serial communication capabilities.

It is based on the 8051 architecture with an 8-bit CPU and includes Flash program memory, SRAM, timers, digital I/O ports, and serial communication interfaces. The microcontroller comes in a 40-pin DIP or SMD package, making it suitable for industrial, educational, and consumer electronics applications.

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Features

• 8-bit 8051-compatible CPU
• Operating voltage: 4.0 V – 5.5 V
• Maximum clock frequency: 24 MHz
• Program memory: 8 KB Flash (in-system programmable)
• Data memory: 256 bytes RAM
• I/O pins: 32 programmable digital I/O pins
• Timers/Counters: Three 16-bit timers
• Communication interfaces:
• Full-duplex UART (serial)
• Interrupt system: 8 interrupt sources
• Low-power modes: Idle and Power-down
• Package type: 40-pin DIP / 40-pin SMD

Applications

• Embedded control systems
• Industrial automation
• Sensor interfacing and data acquisition
• Robotics and motor control
• Serial communication projects
• Consumer electronics
• Educational and student projects