The R65C22P4 is a versatile Versatile Interface Adapter (VIA) from Rockwell. This CMOS chip provides a cost-effective and efficient means of interfacing microprocessors with external peripherals.

Applications

• Industrial control systems: Used for interfacing with sensors, actuators, and other industrial equipment.
• Data acquisition systems: Provides a means of collecting data from various sources.
• Embedded systems: Suitable for applications where a flexible and programmable interface is required.
• Robotics: Used for controlling motors and sensors in robotic applications.
• Instrumentation: Used for interfacing with instruments and controlling their operation.

Features

• Two 8-bit bidirectional parallel ports: Allows for simultaneous input and output of data.
• Four handshaking lines: Facilitates reliable data transfer with peripherals.
• Two 16-bit timer/counters: Provides precise timing and counting capabilities.
• Serial port: Enables serial communication with other devices.
• Interrupt capability: Allows the VIA to interrupt the microprocessor for timely response to events.
• CMOS technology: Ensures low power consumption and high noise immunity.

Benefits

• Versatile interface: Can be used with a wide range of peripherals.
• Efficient data transfer: Handshaking lines ensure reliable data transfer.
• Precise timing: Timer/counters provide accurate timing capabilities.
• Low power consumption: CMOS technology minimizes power requirements.
• Easy to use: Simple programming model allows for easy integration into systems.
• Cost-effective: Provides a cost-efficient solution for interfacing with peripherals.

Additional Details

The R65C22P4 is typically packaged in a 40-pin DIP package. It requires a 5V power supply. It is compatible with a wide range of microprocessors. The operating temperature range is typically -40°C to +85°C.