The UPD8085AC-2 is an enhanced version of the UPD8085AC 8-bit microprocessor, manufactured by NEC. It builds upon the features of its predecessor with improved performance characteristics, making it suitable for applications demanding faster processing speeds.

Applications

• Advanced Industrial Control Systems: Utilized in PLCs and industrial controllers requiring faster response times.
• High-Performance Instrumentation: Employed in instruments needing higher sampling rates and data processing capabilities, such as advanced oscilloscopes and data acquisition systems.
• Sophisticated Embedded Systems: Used in embedded applications requiring improved processing power, including communication devices and control units.
• Real-Time Applications: Suitable for real-time systems where timely execution of tasks is critical.

Features

• 8-bit Architecture: Offers an 8-bit data bus and address bus for efficient data handling.
• Higher Clock Frequency: Operates at a higher clock frequency compared to the UPD8085AC, resulting in faster instruction execution.
• Multiplexed Address/Data Bus: Features a multiplexed address and data bus to reduce pin count and simplify system design.
• On-Chip Clock Generator: Includes an integrated clock generator to facilitate easy clock signal generation.
• Interrupt Handling: Supports multiple interrupt inputs for efficient management of external events.
• Improved Instruction Execution Speed: Enhanced instruction execution speed due to the higher clock frequency.

Benefits

• Increased Performance: Delivers higher performance compared to the standard UPD8085AC, enabling faster processing and response times.
• Versatile Applications: Suitable for a wide range of applications, especially those requiring higher processing speeds.
• Simplified Integration: The on-chip clock generator and multiplexed address/data bus simplify integration into various systems.
• Reliable Operation: Provides reliable performance and stability in demanding environments.

Additional Details

The UPD8085AC-2 typically operates on a single +5V power supply and comes in a 40-pin DIP (Dual In-line Package). The higher clock frequency allows for faster instruction execution, improving overall system performance. Like the UPD8085AC, it requires an external latch to demultiplex the address from the multiplexed address and data bus. Its interrupt structure supports prioritized handling of external events, making it suitable for real-time and interrupt-driven applications. The instruction set is compatible with the UPD8085AC, ensuring ease of migration and software compatibility.