IS82C55AZ

Product Overview

Category

IS82C55AZ belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a programmable peripheral interface in various electronic devices.

Characteristics

• Programmable: The IS82C55AZ can be programmed to perform different functions based on specific requirements.
• Versatile: It supports multiple modes of operation, including input, output, and bidirectional modes.
• High Compatibility: This IC is compatible with a wide range of microprocessors and microcontrollers.
• Low Power Consumption: It operates efficiently with low power consumption.
• Reliable: The IS82C55AZ is known for its high reliability and durability.

Package

The IS82C55AZ is available in a standard 40-pin dual in-line package (DIP).

Essence

The essence of the IS82C55AZ lies in its ability to provide flexible and programmable I/O capabilities to electronic systems.

Packaging/Quantity

This product is typically packaged in tubes or trays, with quantities varying depending on customer requirements.

Specifications

• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Input/Output Voltage Range: 0V to 5V
• Maximum Clock Frequency: 8 MHz
• Number of I/O Ports: 24
• Number of Control Lines: 3

Detailed Pin Configuration

The IS82C55AZ has a total of 40 pins. Here is a detailed pin configuration:

1. PA0 (I/O)
2. PA1 (I/O)
3. PA2 (I/O)
4. PA3 (I/O)
5. PA4 (I/O)
6. PA5 (I/O)
7. PA6 (I/O)
8. PA7 (I/O)
9. GND
10. PB0 (I/O)
11. PB1 (I/O)
12. PB2 (I/O)
13. PB3 (I/O)
14. PB4 (I/O)
15. PB5 (I/O)
16. PB6 (I/O)
17. PB7 (I/O)
18. PC0 (I/O)
19. PC1 (I/O)
20. PC2 (I/O)
21. PC3 (I/O)
22. PC4 (I/O)
23. PC5 (I/O)
24. PC6 (I/O)
25. PC7 (I/O)
26. VCC
27. RD (Input)
28. WR (Input)
29. A0 (Input)
30. A1 (Input)
31. A2 (Input)
32. CS (Input)
33. RESET (Input)
34. XTAL1 (Input)
35. XTAL2 (Output)
36. IRQ (Output)
37. HOLD (Output)
38. HLDA (Output)
39. READY (Output)
40. INTA (Output)

Functional Features

The IS82C55AZ offers the following functional features:

• Three 8-bit I/O ports (Port A, Port B, and Port C) with individual direction control.
• Programmable modes of operation for each port, including input, output, and bidirectional modes.
• Interrupt capability for efficient data transfer and communication.
• Handshake signals (HOLD and HLDA) to manage bus access in multiprocessor systems.
• Reset and interrupt acknowledge signals for system initialization and synchronization.

Advantages and Disadvantages

Advantages

• Versatile and programmable I/O capabilities.
• High compatibility with various microprocessors and microcontrollers.
• Reliable performance and durability.
• Low power consumption.

Disadvantages

• Limited number of I/O ports (24 in total).
• Requires programming expertise for optimal utilization.

Working Principles

The IS82C55AZ operates based on the principles of digital logic and microprocessor interfacing. It communicates with the microprocessor through control lines and data lines, enabling the transfer of data between the microprocessor and external devices. The programmable nature of this IC allows it to adapt to different system requirements by configuring its I/O ports and modes of operation.

Detailed Application Field Plans

The IS82C55AZ finds applications in various fields, including:

1. Industrial Automation: Used for controlling and monitoring devices in manufacturing processes.
2. Communication Systems: Enables data transfer and communication between different components of communication systems.
3. Embedded Systems: Provides I/O capabilities for embedded systems, such as robotics and IoT devices.
4. Test and Measurement Equipment: Used in test and measurement equipment for data acquisition and control.
5. Automotive Electronics: Utilized in automotive electronics for controlling various functions and interfaces.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the IS82C55AZ are:

1. Intel 8255A 2