The COP842C-TQT/N is a member of the COP8 family of 8-bit microcontrollers manufactured by National Semiconductor, now part of Texas Instruments (TI). These microcontrollers are designed for a wide range of embedded control applications, offering a good balance of performance, features, and cost-effectiveness.

Applications

• Consumer Electronics: Used in appliances, remote controls, and other consumer devices requiring embedded control.
• Industrial Control: Suitable for industrial control systems, monitoring, and automation applications.
• Automotive: Can be used in automotive applications such as dashboard controls and sensor interfaces.
• Security Systems: Used in security systems for functions like alarm monitoring and access control.
• Motor Control: Can be used for simple motor control applications.

Features

• 8-Bit Architecture: Based on an 8-bit CPU, providing sufficient processing power for various control tasks.
• On-Chip ROM/EPROM: Includes Read-Only Memory (ROM) or Erasable Programmable ROM (EPROM) for program storage.
• On-Chip RAM: Features Random-Access Memory (RAM) for data storage.
• Input/Output (I/O) Ports: Provides general-purpose I/O pins for interfacing with external devices.
• Timer/Counter: Integrated timer/counter module for timing and counting functions.
• UART: Includes a Universal Asynchronous Receiver/Transmitter (UART) for serial communication.
• Interrupt Capability: Supports interrupt handling for real-time response to events.
• Low Power Consumption: Designed for low-power operation, suitable for battery-powered devices.

Benefits

• Versatile Solution: Suitable for a wide range of embedded control applications.
• Easy to Program: Relatively simple instruction set facilitates programming and implementation of control algorithms.
• Flexible I/O: Provides flexible I/O ports for interfacing with various external devices and sensors.
• Integrated Peripherals: On-chip ROM/EPROM, RAM, timer/counter, and UART reduce the need for external components.
• Low Power Operation: Extends battery life in portable and battery-powered applications.

Additional Details

The COP842C-TQT/N operates with a specific supply voltage and clock frequency, as detailed in its datasheet. The memory configuration includes a defined amount of ROM/EPROM and RAM, determining the complexity of programs and data storage capabilities. The I/O pins are configurable as inputs or outputs, some offering additional functionalities such as interrupt inputs or timer outputs. The UART module enables serial communication with other devices. The microcontroller's instruction set encompasses arithmetic, logical, data transfer, and program control instructions. Housed in a specific package (e.g., DIP, SOIC), it integrates into various circuit designs. Designers must consult the datasheet for precise electrical characteristics, timing diagrams, and application guidelines to ensure proper implementation. Supporting components like resistors, capacitors, and transistors are commonly used to create complete control systems. Due to its legacy status, it may be more appropriate for maintaining existing designs or educational purposes rather than new high-performance applications.