IP82C55A

Product Overview

• Category: Integrated Circuit
• Use: Input/Output (I/O) Controller
• Characteristics: Versatile, high-performance, programmable
• Package: Dual In-Line Package (DIP)
• Essence: Control and manage input/output operations in a computer system
• Packaging/Quantity: Typically sold individually or in small quantities

Specifications

• Number of I/O Ports: 24
• Operating Voltage: 5V
• Maximum Clock Frequency: 8 MHz
• Data Bus Width: 8 bits
• Address Bus Width: 16 bits
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The IP82C55A has a total of 40 pins. Here is the detailed pin configuration:

1. Port A Bit 0 (PA0)
2. Port A Bit 1 (PA1)
3. Port A Bit 2 (PA2)
4. Port A Bit 3 (PA3)
5. Port A Bit 4 (PA4)
6. Port A Bit 5 (PA5)
7. Port A Bit 6 (PA6)
8. Port A Bit 7 (PA7)
9. Ground (GND)
10. Chip Select (CS)
11. Read/Write (R/W)
12. Register Select (RS)
13. Interrupt Request (INT)
14. Port C Bit 0 (PC0)
15. Port C Bit 1 (PC1)
16. Port C Bit 2 (PC2)
17. Port C Bit 3 (PC3)
18. Port C Bit 4 (PC4)
19. Port C Bit 5 (PC5)
20. Port C Bit 6 (PC6)
21. Port C Bit 7 (PC7)
22. VCC (+5V)
23. Port B Bit 0 (PB0)
24. Port B Bit 1 (PB1)
25. Port B Bit 2 (PB2)
26. Port B Bit 3 (PB3)
27. Port B Bit 4 (PB4)
28. Port B Bit 5 (PB5)
29. Port B Bit 6 (PB6)
30. Port B Bit 7 (PB7)
31. Ground (GND)
32. Mode Select 0 (MS0)
33. Mode Select 1 (MS1)
34. Mode Select 2 (MS2)
35. Chip Enable 1 (CE1)
36. Chip Enable 2 (CE2)
37. Reset (RESET)
38. Clock (CLK)
39. Ground (GND)
40. VCC (+5V)

Functional Features

• Programmable I/O ports for versatile usage
• Three operating modes: Mode 0, Mode 1, and Mode 2
• Bidirectional data transfer capability
• Interrupt-driven operation for efficient processing
• Built-in control logic for simplified interfacing

Advantages and Disadvantages

Advantages: - Versatile and flexible I/O controller - High-performance operation - Programmable features allow customization - Efficient interrupt handling

Disadvantages: - Limited number of I/O ports - Requires external components for complete functionality - Relatively complex programming interface

Working Principles

The IP82C55A acts as an interface between a computer system and external devices. It manages the input and output operations by providing programmable I/O ports. The device can be programmed to operate in different modes, allowing it to handle various types of data transfers.

When an external device sends or receives data, the IP82C55A controls the flow of information through its I/O ports. It can generate interrupts to notify the computer system about specific events, enabling efficient handling of input/output operations.

Detailed Application Field Plans

The IP82C55A finds applications in various fields, including:

1. Industrial Automation: Controlling and monitoring devices in manufacturing processes.
2. Embedded Systems: Interfacing with sensors, actuators, and other peripherals in embedded systems.
3. Communication Systems: Managing data transfer between different communication modules.
4. Robotics: Handling input/output operations in robotic systems.
5. Gaming Consoles: Providing I/O control for gaming consoles and peripherals.

Alternative Models

• Intel 8255
• Motorola MC6821
• Zilog Z80PIO

These alternative models offer similar functionality to the IP82C55A and can be used as replacements in compatible systems.

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