The UPD71055-10, manufactured by NEC, is a Programmable Communication Interface (PCI) controller. This device is designed to manage data transmission and reception in various communication systems. It serves as an interface between a microprocessor and serial communication lines, enabling efficient data transfer.

Applications

• Data Communication Systems: Used in modems, network adapters, and serial communication devices.
• Industrial Control Systems: Employed in systems requiring serial communication for device control and monitoring.
• Computer Peripherals: Found in devices like serial printers, scanners, and other peripherals requiring serial data exchange.
• Embedded Systems: Integrated into systems where serial communication is necessary for connecting different components.

Features

• Programmable Serial Interface: Allows flexible configuration for different serial communication standards.
• Full-Duplex Operation: Supports simultaneous transmission and reception of data.
• Multiple Communication Protocols: Compatible with various serial communication protocols, including asynchronous and synchronous modes.
• Interrupt Handling: Generates interrupts to signal the microprocessor about data availability or errors.
• Data Buffering: Provides buffering to manage data flow and prevent data loss.
• Clock Generation: Includes a clock generator for timing serial communication signals.

Benefits

• Versatile Communication: Supports a wide range of communication standards, making it adaptable to different applications.
• Efficient Data Transfer: Enables high-speed data transmission and reception, improving system performance.
• Reduced Microprocessor Load: Handles serial communication tasks, freeing up the microprocessor for other operations.
• Improved System Reliability: Provides error detection and handling capabilities, enhancing data integrity.
• Simplified System Design: Integrates multiple communication functions into a single chip, reducing component count and board space.

Additional Details

The UPD71055-10 typically operates on a 5V power supply. It includes various registers for configuration and control of serial communication parameters such as baud rate, data format, and error checking. It supports both interrupt-driven and polled modes of operation, allowing flexibility in system design. The device is often available in a DIP (Dual In-line Package) or a surface mount package, depending on the specific application requirements. It is designed for reliable operation in industrial and commercial environments.