IS82C55A-5Z96

Product Overview

Category

IS82C55A-5Z96 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for interfacing between a microprocessor and various peripheral devices.

Characteristics

• Package: The IS82C55A-5Z96 is available in a 40-pin DIP (Dual In-line Package) format.
• Essence: It serves as an interface controller, facilitating communication between a microprocessor and peripherals.
• Packaging/Quantity: The IC is typically sold in reels or tubes, with quantities varying based on customer requirements.

Specifications

The specifications of IS82C55A-5Z96 are as follows:

• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Input/Output Compatibility: TTL (Transistor-Transistor Logic)
• Maximum Clock Frequency: 8 MHz
• Number of I/O Ports: 24 (divided into three 8-bit ports - Port A, Port B, and Port C)

Detailed Pin Configuration

The pin configuration of IS82C55A-5Z96 is as follows:

1. GND (Ground)
2. Port C0
3. Port C1
4. Port C2
5. Port C3
6. Port C4
7. Port C5
8. Port C6
9. Port C7
10. RD (Read)
11. WR (Write)
12. A0 (Address bit 0)
13. A1 (Address bit 1)
14. A2 (Address bit 2)
15. CS (Chip Select)
16. RESET
17. Port A0
18. Port A1
19. Port A2
20. Port A3
21. Port A4
22. Port A5
23. Port A6
24. Port A7
25. VCC (Supply Voltage)

Functional Features

The IS82C55A-5Z96 offers the following functional features:

1. Three 8-bit I/O ports (Port A, Port B, and Port C) for data transfer.
2. Programmable modes of operation: Mode 0 (Basic Input/Output), Mode 1 (Strobed Input/Output), and Mode 2 (Bidirectional Bus).
3. Interrupt capability for efficient communication between the microprocessor and peripherals.
4. Handshake signals (RD and WR) to control data transfer.
5. Chip Select (CS) signal to enable/disable the IC.

Advantages and Disadvantages

Advantages

• Versatile interface controller suitable for various applications.
• Multiple programmable modes provide flexibility in data transfer.
• Interrupt capability enhances system efficiency.

Disadvantages

• Limited number of I/O ports may restrict connectivity options.
• Relatively low maximum clock frequency compared to some modern ICs.

Working Principles

The IS82C55A-5Z96 acts as an intermediary between a microprocessor and peripheral devices. It receives commands from the microprocessor and controls the data transfer between the microprocessor and peripherals. The IC operates based on the selected mode of operation and utilizes handshake signals, interrupts, and address lines to facilitate efficient communication.

Detailed Application Field Plans

The IS82C55A-5Z96 finds application in various fields, including but not limited to:

1. Industrial Automation: Used for interfacing microcontrollers with sensors, actuators, and other industrial equipment.
2. Communication Systems: Facilitates communication between microprocessors and peripherals in networking devices, modems, and routers.
3. Embedded Systems: Enables interaction between microcontrollers and external devices in embedded systems such as home automation, automotive electronics, and medical devices.

Detailed and Complete Alternative Models

Some alternative models to IS82C55A-5Z96 that offer similar functionality include:

1. Intel 8255A
2. Motorola MC6821
3. Zilog Z80PIO

These alternatives provide comparable features and can be used as substitutes based on specific requirements.

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