Atmel 8051 AT89C52-24PC IC DIP-40 Leads Microcontroller IC Chip

The AT89C52 8-bit Microcontroller is a highly versatile and reliable microcontroller from Atmel’s 8051 family, perfect for embedded systems, automation projects, and educational applications. Featuring 8KB of In-System Programmable (ISP) Flash Memory and 256 bytes of internal RAM, the AT89C52 microcontroller handles a wide range of control and data processing tasks with ease. Its robust design, combined with simple programming, makes it a favorite among developers, hobbyists, and students working on microcontroller-based projects.

With an impressive endurance of up to 10,000 write/erase cycles, the AT89C52 microcontroller ensures long-term reliability. It operates over a voltage range of 4.0V to 5.5V and supports fully static operation from 0 Hz to 33 MHz. The microcontroller also offers multiple I/O lines, timers, serial communication support, and low-power modes, making it suitable for both industrial-grade and low-power applications.

Ports Overview

• Port P0: Multiplexed address/data bus and general-purpose I/O
• Port P1: General-purpose I/O with additional timer/counter functions
• Port P2: High-order address bus or general-purpose I/O
• Port P3: I/O with built-in serial communication, interrupts, and control functions

Key Features of AT89C52 Microcontroller

• Fully compatible with MCS®-51 instruction set
• 8KB ISP Flash Memory with 10,000 write/erase cycle endurance
• Operating voltage range: 4.0V – 5.5V
• Fully static operation: 0 Hz – 33 MHz clock frequency
• Three-level program memory lock for enhanced security
• 256 x 8-bit internal RAM
• 32 programmable I/O lines for flexible interfacing
• Three 16-bit timer/counters
• Eight interrupt sources for responsive control
• Full-duplex UART serial communication
• Low-power idle and power-down modes for energy efficiency
• Watchdog timer to ensure system reliability
• Dual data pointer for efficient memory handling
• Power-off flag for status monitoring
• Fast programming with flexible ISP modes (byte and page)
• Eco-friendly green (Pb/Halide-free) packaging option

AT89C52 Pin Configuration

• P1.0 (T2) – Timer/Counter or GPIO pin 0 of Port 1
• P1.1 (T2.EX) – Timer/Counter/External Counter or GPIO pin 1 of Port 1
• P1.2 to P1.7 – Multipurpose GPIO pins
• P3.0 (RXD) – Serial input
• P3.1 (TXD) – Serial output
• P3.2 (INT0) – External interrupt 0
• P3.3 (INT1) – External interrupt 1
• P3.4 (T0) – Timer 0 input
• P3.5 (T1) – Timer 1 input
• P3.6 (WR) – External data memory write strobe
• P3.7 (RD) – External data memory read strobe

Applications of AT89C52 Microcontroller

• Embedded control systems
• Home automation projects
• Robotics and sensor interfacing
• Industrial control panels
• Educational and student microcontroller projects
• Data acquisition and logging systems

Other Popular Atmel 8-bit Microcontrollers

• AT89C51 – Classic 8051 series microcontroller
• ATmega328P – Popular AVR microcontroller used in Arduino boards

The AT89C52 microcontroller is an excellent choice for anyone looking to build reliable and efficient electronic projects. Its combination of memory, I/O capabilities, and robust design makes it perfect for both beginners and advanced developers in the field of embedded systems.