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CQ82C55A

CQ82C55A

Manufacturer No:

CQ82C55A

Description:

IC XPNDR PARALLEL 44MQFP

Datasheet:

Datasheet

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CQ82C55A Specifications

  • Type
    Parameter
  • Supplier Device Package
    44-MQFP (10x10)
  • Package / Case
    44-QFP
  • Mounting Type
    Surface Mount
  • Operating Temperature
    0°C ~ 70°C
  • Voltage - Supply
    4.5V ~ 5.5V
  • Current - Output Source/Sink
    2.5mA
  • Output Type
    Open Drain
  • Features
    -
  • Interrupt Output
    No
  • Interface
    Parallel
  • Number of I/O
    24
  • DigiKey Programmable
    Not Verified
  • Packaging
    Tube
  • Product Status
    Obsolete
  • Series
    -
The CQ82C55A is an integrated circuit chip that is commonly used as an I/O (Input/Output) peripheral device in various applications. Some of the advantages and application scenarios of this chip are:Advantages: 1. Versatility: The CQ82C55A provides versatile I/O functionality, offering three 8-bit ports (port A, port B, and port C) that can be configured as either inputs or outputs, depending on the application requirements. 2. Programmability: This chip is programmable, allowing users to define the specific functionality of each I/O pin. The chip supports both basic and advanced I/O operations, including data transfer, handshaking, and interrupt handling. 3. Interfacing Capability: The CQ82C55A can interface with a wide range of devices such as keyboards, displays, printers, sensors, actuators, and other peripheral devices. It can provide a bridge between the microprocessor and the external devices in a system. 4. Cost-effective: The chip is relatively low-cost, making it suitable for applications where budget constraints are a consideration.Application Scenarios: 1. Embedded Systems: The CQ82C55A is commonly used in embedded systems where I/O operations are required. It can be used to interface various peripheral devices to a microcontroller or microprocessor, enabling communication and data transfer between the system and external devices. 2. Industrial Control Systems: This chip can be utilized in industrial control systems for controlling and monitoring various devices such as motors, pumps, valves, switches, and sensors. It provides the necessary I/O functionality for connecting these devices to a central control unit. 3. Data Acquisition Systems: The CQ82C55A can be used in data acquisition systems where multiple sensors or data sources need to be connected to a central processing unit. The chip enables the collection and transfer of analog or digital data from different sources to the system for further processing and analysis. 4. Robotics and Automation: In robotics and automation applications, the CQ82C55A can serve as an interface between the control unit and various actuators and sensors. It can be used to control the movement, speed, and positioning of motors, as well as gather feedback from sensors for closed-loop control systems. 5. Communication Systems: The chip can be employed in communication systems for handling I/O operations such as serial data transmission, parallel data transfer, and handshaking between different devices. It can facilitate the exchange of data between a computer and connected peripherals like modems, printers, and displays.It is important to note that while the CQ82C55A has been widely used in the past, it is now considered an older technology. Modern systems often employ more advanced I/O chips or integrate these functionalities directly into microcontrollers or application-specific integrated circuits (ASICs).
CQ82C55A Relevant information