AT89C1051U-12PI

Product Overview

Category

The AT89C1051U-12PI 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 CMOS 8-bit microcontroller
• 1K bytes of Flash memory
• 128 bytes of RAM
• 15 programmable I/O lines
• Two 16-bit timer/counters
• Six interrupt sources
• Programmable serial UART channel
• On-chip oscillator and clock circuitry

Package

The AT89C1051U-12PI is available in a 20-pin DIP (Dual Inline Package) format.

Essence

The essence of the AT89C1051U-12PI microcontroller lies in its ability to provide efficient and reliable control for a wide range of electronic devices and systems.

Packaging/Quantity

The AT89C1051U-12PI is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Operating Voltage: 2.7V to 6V
• Maximum CPU Clock Frequency: 12 MHz
• Flash Memory Size: 1K bytes
• RAM Size: 128 bytes
• Number of I/O Lines: 15
• Timer/Counter: Two 16-bit timers/counters
• Interrupt Sources: Six
• Serial Communication: Programmable UART channel

Detailed Pin Configuration

The AT89C1051U-12PI microcontroller has a total of 20 pins, each serving a specific purpose. The pin configuration is as follows:

1. P1.0 - Port 1, Pin 0
2. P1.1 - Port 1, Pin 1
3. P1.2 - Port 1, Pin 2
4. P1.3 - Port 1, Pin 3
5. P1.4 - Port 1, Pin 4
6. P1.5 - Port 1, Pin 5
7. P1.6 - Port 1, Pin 6
8. P1.7 - Port 1, Pin 7
9. RST - Reset Pin
10. XTAL1 - Crystal Oscillator Input
11. XTAL2 - Crystal Oscillator Output
12. GND - Ground
13. P3.0 - Port 3, Pin 0
14. P3.1 - Port 3, Pin 1
15. P3.2 - Port 3, Pin 2
16. P3.3 - Port 3, Pin 3
17. P3.4 - Port 3, Pin 4
18. P3.5 - Port 3, Pin 5
19. VCC - Supply Voltage
20. PSEN - Program Store Enable

Functional Features

The AT89C1051U-12PI microcontroller offers several functional features that make it a versatile choice for embedded control systems:

1. Flash Memory: The built-in 1K bytes of Flash memory allows for easy program storage and modification.
2. RAM: With 128 bytes of RAM, the microcontroller can efficiently handle data processing tasks.
3. I/O Lines: The 15 programmable I/O lines provide flexibility in connecting external devices and sensors.
4. Timer/Counters: Two 16-bit timer/counters enable precise timing and event counting capabilities.
5. Interrupt Sources: The microcontroller supports six interrupt sources, allowing for efficient handling of external events.
6. Serial Communication: The programmable UART channel facilitates serial communication with other devices.

Advantages and Disadvantages

Advantages

• Low-power consumption, making it suitable for battery-powered applications.
• Compact size and easy integration into various electronic systems.
• Wide operating voltage range allows for flexibility in power supply options.
• Ample program and data storage capabilities.
• Support for serial communication simplifies connectivity with other devices.

Disadvantages

• Limited Flash memory capacity compared to higher-end microcontrollers.
• Relatively lower clock frequency may restrict performance in demanding applications.
• Limited number of I/O lines may pose constraints in complex projects.

Working Principles

The AT89C1051U-12PI microcontroller operates based on the principles of a typical 8-bit microcontroller. It executes instructions stored in its Flash memory, processes data using its RAM, and interacts with external devices through its I/O lines. The built-in timers/counters and interrupt handling mechanisms enable precise timing and event-driven operations. The microcontroller's working principle revolves around executing instructions sequentially, responding to external events, and controlling connected devices as per the programmed logic.

Detailed Application Field Plans

The AT89C1051U-12PI