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MC6828P from MOTO,Motorola

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MC6828P

Manufacturer: MOTO, MOT

V(cc): -0.5 to +7.0V; priority interrupt controller

Partnumber Manufacturer Quantity Availability
MC6828P MOTO, MOT 55 In Stock

Description and Introduction

V(cc): -0.5 to +7.0V; priority interrupt controller # **MC6828P: A Reliable Peripheral Interface Adapter for Enhanced System Integration**  

In the realm of embedded systems and microprocessor-based designs, seamless communication between the CPU and peripheral devices is essential. The **MC6828P** stands as a proven solution, offering robust functionality as a **Peripheral Interface Adapter (PIA)**. Designed for compatibility with Motorola’s 6800 series microprocessors, this integrated circuit simplifies data transfer, control signal management, and system interfacing, making it a valuable component for legacy and specialized applications.  

## **Key Features of the MC6828P**  

The MC6828P is engineered to facilitate efficient interaction between a microprocessor and external peripherals. Its key attributes include:  

- **Dual 8-Bit Bidirectional Data Ports** – Each port can be independently configured for input or output operations, providing flexibility in interfacing with sensors, displays, or other I/O devices.  
- **Programmable Control Registers** – Users can define interrupt conditions, data direction, and handshaking protocols, allowing tailored operation for specific system requirements.  
- **Interrupt Handling Capability** – The PIA supports interrupt-driven operations, enabling efficient event-based processing without constant CPU polling.  
- **TTL Compatibility** – Ensures reliable signal levels when interfacing with standard logic circuits.  
- **Wide Operating Voltage Range** – Designed to function within typical microprocessor power supply ranges, ensuring stable performance in diverse environments.  

## **Applications and Use Cases**  

The MC6828P has historically been employed in a variety of systems where precise peripheral control is necessary. Some notable applications include:  

- **Industrial Control Systems** – Used for managing sensors, actuators, and communication modules in automated machinery.  
- **Retro Computing and Legacy Systems** – Found in vintage computer architectures requiring stable I/O expansion.  
- **Test and Measurement Equipment** – Facilitates data acquisition and control signal management in instrumentation setups.  
- **Embedded Prototyping** – Serves as a bridge between microprocessors and custom peripheral circuits in development environments.  

## **Why Choose the MC6828P?**  

While newer interface solutions have emerged, the MC6828P remains a dependable choice for engineers working with legacy systems or seeking a straightforward, well-documented IC for peripheral interfacing. Its simplicity, combined with robust performance, makes it an enduring option for applications where reliability and compatibility take precedence over cutting-edge speed.  

For designers maintaining or restoring older electronic systems, the MC6828P provides a proven method of integrating I/O operations without complex modern protocols. Its ease of configuration and interrupt support ensures efficient system responsiveness, even in resource-constrained environments.  

## **Conclusion**  

The MC6828P exemplifies the enduring utility of well-designed interface components. Whether utilized in industrial controls, vintage computing, or embedded projects, its ability to streamline peripheral communication continues to make it a relevant choice. For engineers and hobbyists alike, this PIA offers a balance of functionality and simplicity, reinforcing its place in the landscape of microprocessor-based design.  

For those working with 6800-series processors or similar architectures, the MC6828P remains a reliable and effective solution for peripheral interfacing challenges.

Application Scenarios & Design Considerations

V(cc): -0.5 to +7.0V; priority interrupt controller

Alternative Part Number

  • HD6828P --: Second-source equivalent of the 6828 peripheral interface adapter with the same pinout and function, widely used as a direct replacement.
  • P8255A-5 --: Industry-standard programmable peripheral interface with comparable I/O expansion function; requires checking pinout and timing compatibility before substitution.
  • W65C22S6TPG-14 --: Modern CMOS versatile interface adapter offering similar parallel I/O capability with lower power consumption; verify electrical and pin compatibility for the target design.
  • PIA6821P --: Closely related peripheral interface adapter from the same family with compatible functionality and DIP-40 pinout for many applications.
  • SY6828P --: Alternate-manufactured 6828-compatible peripheral interface adapter offering equivalent electrical behavior and pin compatibility.

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