AT89C55WD-24AU

Product Overview

Category

The AT89C55WD-24AU belongs to the category of microcontrollers.

Use

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

Characteristics

• High-performance 8-bit microcontroller
• Low-power consumption
• Wide operating voltage range
• Flash memory for program storage
• Multiple I/O ports for interfacing with external devices
• On-chip peripherals for enhanced functionality

Package

The AT89C55WD-24AU is available in a compact and durable package, suitable for surface mount technology (SMT) applications.

Essence

The essence of this microcontroller lies in its ability to provide efficient and reliable control in diverse electronic systems.

Packaging/Quantity

The AT89C55WD-24AU is typically packaged in reels or trays, containing a specific quantity of microcontrollers per package. The exact quantity may vary depending on the supplier.

Specifications

• Architecture: 8-bit
• CPU Speed: 24 MHz
• Program Memory Size: 20 KB
• RAM Size: 256 bytes
• Number of I/O Pins: 32
• Operating Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Communication Interfaces: UART, SPI, I2C

Detailed Pin Configuration

The AT89C55WD-24AU has a total of 40 pins, each serving a specific purpose. Here is a detailed pin configuration:

1. P0.0 - Port 0, Pin 0
2. P0.1 - Port 0, Pin 1
3. P0.2 - Port 0, Pin 2
4. P0.3 - Port 0, Pin 3
5. P0.4 - Port 0, Pin 4
6. P0.5 - Port 0, Pin 5
7. P0.6 - Port 0, Pin 6
8. P0.7 - Port 0, Pin 7
9. RST - Reset Pin
10. P1.0 - Port 1, Pin 0
11. P1.1 - Port 1, Pin 1
12. P1.2 - Port 1, Pin 2
13. P1.3 - Port 1, Pin 3
14. P1.4 - Port 1, Pin 4
15. P1.5 - Port 1, Pin 5
16. P1.6 - Port 1, Pin 6
17. P1.7 - Port 1, Pin 7
18. XTAL1 - Crystal Oscillator Input
19. XTAL2 - Crystal Oscillator Output
20. GND - Ground
21. VCC - Power Supply
22. P2.0 - Port 2, Pin 0
23. P2.1 - Port 2, Pin 1
24. P2.2 - Port 2, Pin 2
25. P2.3 - Port 2, Pin 3
26. P2.4 - Port 2, Pin 4
27. P2.5 - Port 2, Pin 5
28. P2.6 - Port 2, Pin 6
29. P2.7 - Port 2, Pin 7
30. ALE/PROG - Address Latch Enable/Program Pin
31. PSEN - Program Store Enable Pin
32. EA/VPP - External Access Enable/Voltage Programming Pin
33. P3.0 - Port 3, Pin 0
34. P3.1 - Port 3, Pin 1
35. P3.2 - Port 3, Pin 2
36. P3.3 - Port 3, Pin 3
37. P3.4 - Port 3, Pin 4
38. P3.5 - Port 3, Pin 5
39. P3.6 - Port 3, Pin 6
40. P3.7 - Port 3, Pin 7

Functional Features

The AT89C55WD-24AU offers several functional features that enhance its usability and performance:

1. Flash memory for program storage allows easy reprogramming of the microcontroller.
2. Multiple I/O ports enable seamless interfacing with external devices.
3. On-chip peripherals such as UART, SPI, and I2C provide versatile communication options.
4. Timers and counters facilitate precise timing and event management.
5. Interrupts enable efficient handling of external events and real-time tasks.

Advantages and Disadvantages