The TMP82C255AN-2 is a CMOS programmable peripheral interface (PPI) manufactured by Toshiba. It provides a flexible parallel I/O interface for microprocessors, facilitating communication and control of external peripheral devices.

Applications

• Industrial control systems
• Embedded systems
• Data acquisition systems
• Instrumentation
• Robotics

Features

• Three 8-bit parallel I/O ports (Port A, Port B, Port C)
• Programmable I/O modes: Mode 0 (Basic I/O), Mode 1 (Strobed I/O), Mode 2 (Bidirectional Bus)
• Bit set/reset capability for Port C
• TTL compatible inputs and outputs
• Single +5V power supply
• CMOS technology for low power consumption

Benefits

• Offers a versatile and configurable interface between a microprocessor and external peripherals.
• Simplifies system design by integrating I/O functionality.
• Reduces the need for external logic, saving board space and cost.
• Allows for flexible adaptation to different peripheral devices and communication protocols.
• Low power consumption, suitable for battery-powered applications.

Additional Details

The TMP82C255AN-2 operates with a single +5V power supply. The three I/O ports (A, B, and C) can be individually programmed as either inputs or outputs. Port C also has the capability of individual bit set/reset. The PPI supports three different operating modes: Mode 0 for basic I/O, Mode 1 for strobed I/O with handshaking, and Mode 2 for bidirectional data transfer. The selection of the appropriate mode depends on the application's requirements. The CMOS technology ensures low power consumption, which makes it suitable for portable or battery-powered applications. The -2 likely refers to the speed grade or a specific revision of the chip. When designing with this component, it is vital to consult the manufacturer's datasheet for detailed specifications.