AT89S51-24JU

Product Overview

Category

AT89S51-24JU belongs to the category of microcontrollers.

Use

This microcontroller is commonly used in various electronic applications that require embedded control systems.

Characteristics

• Low-power, high-performance 8-bit microcontroller
• Operates at a frequency of 24 MHz
• Offers 4KB of Flash memory for program storage
• Provides 128 bytes of RAM for data storage
• Supports a wide range of input/output (I/O) options
• Features multiple timers/counters for precise timing operations
• Includes serial communication interfaces (UART, SPI, I2C)
• Supports interrupt-driven programming for efficient task handling

Package

AT89S51-24JU is available in a 40-pin plastic dual in-line package (PDIP).

Essence

The essence of AT89S51-24JU lies in its ability to provide a cost-effective and versatile solution for embedded control applications.

Packaging/Quantity

AT89S51-24JU is typically packaged in reels or tubes, with each containing a specific quantity of microcontrollers. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Microcontroller: AT89S51
• Clock Frequency: 24 MHz
• Flash Memory: 4KB
• RAM: 128 bytes
• I/O Pins: 32
• Timers/Counters: 3
• Serial Communication Interfaces: UART, SPI, I2C
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The pin configuration of AT89S51-24JU is as follows:

1. P0.0 / RXD (Serial Input)
2. P0.1 / TXD (Serial Output)
3. P0.2 / INT0 (External Interrupt 0)
4. P0.3 / INT1 (External Interrupt 1)
5. P0.4 / T0 (Timer 0 External Input)
6. P0.5 / T1 (Timer 1 External Input)
7. P0.6 / WR (Write Control for External Memory)
8. P0.7 / RD (Read Control for External Memory)
9. XTAL1 (Crystal Oscillator Input)
10. XTAL2 (Crystal Oscillator Output)
11. RESET (Reset Input) 12-19. P1.0 - P1.7 (General Purpose I/O)
12. VCC (Supply Voltage)
13. GND (Ground) 22-29. P2.0 - P2.7 (General Purpose I/O)
14. ALE/PROG (Address Latch Enable / Program Pulse)
15. PSEN (Program Store Enable)
16. EA/VPP (External Access Enable / Programming Supply Voltage) 33-40. P3.0 - P3.7 (General Purpose I/O)

Functional Features

AT89S51-24JU offers the following functional features:

1. High-performance CPU with low-power consumption
2. On-chip Flash memory for program storage
3. Built-in RAM for data storage and manipulation
4. Multiple timers/counters for precise timing operations
5. Serial communication interfaces for easy integration with other devices
6. Interrupt-driven programming for efficient task handling
7. Wide range of I/O options for versatile connectivity
8. In-system programmable for easy firmware updates
9. Power-saving modes to optimize energy consumption
10. Robust architecture for reliable operation in various environments

Advantages and Disadvantages

Advantages

• Cost-effective solution for embedded control applications
• Versatile I/O options for flexible connectivity
• Interrupt-driven programming enhances task handling efficiency
• In-system programmability allows for easy firmware updates
• Low-power consumption for energy-efficient operation

Disadvantages

• Limited program and data memory compared to higher-end microcontrollers
• Relatively lower clock frequency compared to some modern microcontrollers
• Lack of advanced features found in more specialized microcontrollers

Working Principles

AT89S51-24JU operates based on the principles of a typical 8-bit microcontroller. It executes instructions stored in its Flash memory, manipulates data in its RAM, and interacts with external devices through its I/O pins. The microcontroller's CPU fetches instructions from memory, decodes them, and performs the necessary operations. Interrupts can be used to handle time-critical tasks or respond to external events. The working principles of AT89S51-24JU are based on a combination of hardware and software components that enable it to perform various control functions.

Detailed Application Field Plans

AT89S51-24JU finds applications in a wide range of fields