CQ82C55A96

Product Overview

Category

The CQ82C55A96 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for various applications, including data communication, control systems, and interface circuits.

Characteristics

• The CQ82C55A96 is a versatile and highly reliable integrated circuit.
• It offers multiple programmable I/O ports, making it suitable for diverse applications.
• This IC operates at low power consumption levels, ensuring energy efficiency.
• It provides excellent noise immunity, enhancing signal integrity.
• The CQ82C55A96 is designed to withstand harsh environmental conditions, ensuring durability.

Package

The CQ82C55A96 is available in a compact and standardized package, allowing easy integration into electronic circuits. The package type may vary depending on the manufacturer.

Essence

The essence of the CQ82C55A96 lies in its ability to provide efficient and flexible I/O operations, enabling seamless communication between different components within an electronic system.

Packaging/Quantity

The CQ82C55A96 is typically packaged individually or in reels, depending on the manufacturer's specifications. The quantity per package may vary but is usually sufficient for small to medium-scale projects.

Specifications

• Supply Voltage: 3V - 5V
• Operating Temperature Range: -40°C to +85°C
• Number of I/O Ports: 24
• Data Bus Width: 8 bits
• Clock Frequency: Up to 10 MHz
• Package Type: DIP (Dual In-line Package) or PLCC (Plastic Leaded Chip Carrier)

Detailed Pin Configuration

The CQ82C55A96 features a specific pin configuration that facilitates its functionality. The following table outlines the pin assignments:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | A0 | Address Bit 0 | | 2 | A1 | Address Bit 1 | | 3 | A2 | Address Bit 2 | | 4 | A3 | Address Bit 3 | | 5 | A4 | Address Bit 4 | | 6 | A5 | Address Bit 5 | | 7 | A6 | Address Bit 6 | | 8 | A7 | Address Bit 7 | | 9 | RD | Read Control | | 10 | WR | Write Control | | 11 | CS | Chip Select | | 12-19 | D0-D7 | Data Bus (8 bits) | | 20 | GND | Ground | | 21 | VCC | Supply Voltage | | 22-24 | NC | No Connection |

Functional Features

The CQ82C55A96 offers several functional features that contribute to its versatility and usefulness in various applications:

1. Programmable I/O Ports: The IC provides 24 programmable I/O ports, allowing customization based on specific requirements.
2. Interrupt Capability: It supports interrupt-driven operations, enabling efficient handling of time-sensitive events.
3. Mode Selection: The CQ82C55A96 offers different operating modes, including mode 0 (Basic Input/Output System), mode 1 (Strobed Input/Output System), and mode 2 (Bidirectional Bus).
4. Handshake Signals: It incorporates handshake signals such as ACK (Acknowledge), BUSY, and ERROR, ensuring reliable data transfer and synchronization.
5. Internal Timer: The IC includes an internal timer that can be utilized for precise timing applications.

Advantages and Disadvantages

Advantages

• Versatile and flexible I/O operations.
• Low power consumption, ensuring energy efficiency.
• Excellent noise immunity for reliable signal integrity.
• Durable design suitable for harsh environmental conditions.

Disadvantages

• Limited data bus width (8 bits).
• Relatively lower clock frequency compared to some modern ICs.

Working Principles

The CQ82C55A96 operates based on the principles of digital logic circuits. It utilizes address decoding techniques to select specific I/O ports and performs data transfer through the data bus. The control signals, such as RD (Read) and WR (Write), enable communication between the IC and external devices. The internal timer and interrupt capability enhance its functionality in various applications.

Detailed Application Field Plans

The CQ82C55A96 finds extensive application in the following fields:

1. Data Communication: It is used in modems, network interface cards, and serial communication devices.
2. Control Systems: The IC is employed in industrial automation systems, robotics, and motor control circuits.
3. Interface Circuits: It facilitates communication between different components in microcontroller-based systems