The TMP82C55AP-2 is a programmable peripheral interface (PPI) chip manufactured by Toshiba Semiconductor and Storage. It's designed to provide a versatile and flexible interface between a microprocessor and various peripheral devices. This device incorporates three 8-bit parallel ports – Port A, Port B, and Port C – each of which can be individually configured as either an input or an output port. The TMP82C55AP-2 allows for simplified peripheral interface design and reduces the overall component count needed in microcomputer systems.

Applications

• Parallel Printer Interface: Provides a direct connection for parallel printers, enabling printing functionality in embedded systems.
• Keyboard/Keypad Interface: Connects keyboards and keypads to microprocessors for user input applications.
• Display Control: Drives various display types such as LED displays and LCD panels.
• Industrial Control Systems: Used for controlling motors, actuators, and other industrial equipment.
• Data Acquisition Systems: Enables the acquisition of data from sensors and other analog or digital sources.
• General-Purpose I/O: Provides versatile input/output capabilities for a wide array of embedded applications.

Features

• Three 8-Bit Parallel Ports: Offers flexible I/O capabilities, allowing versatile connections to peripheral devices.
• Programmable Port Configuration: Each port can be individually configured as either an input or an output port.
• Bit Set/Reset Capability (Port C): Enables individual bits of Port C to be set or reset, providing finer control over specific functions.
• TTL Compatibility: Compatible with standard TTL logic levels, simplifying integration with other digital components.
• Single 5V Power Supply: Operates from a single 5V power supply, simplifying power requirements.
• Simple Microprocessor Interface: Provides an easy-to-use interface with a wide range of microprocessors.

Benefits

• Versatile I/O Control: Allows precise control over connected peripheral devices.
• Simplified System Design: Reduces the complexity of designing peripheral interfaces.
• Reduced Component Count: Integrates multiple I/O functions into a single chip.
• Improved System Performance: Enhances the efficiency of data transfer between the microprocessor and peripheral devices.
• Cost-Effective Solution: Offers a cost-efficient solution for implementing peripheral interfaces in embedded systems.

Additional Details

The TMP82C55AP-2 operates on a single 5V power supply and is fully TTL compatible. The device is configured through an 8-bit data bus and several control signals, allowing for easy programming of the I/O ports. The typical operating temperature range is generally between 0°C to 70°C. It is typically housed in a 40-pin DIP (Dual In-line Package). Each of the three ports (A, B, and C) can be independently programmed to function as either an input or an output port. Furthermore, Port C includes the functionality to individually set or reset bits, which enhances control, especially in applications that require precise bit manipulation for specific device control functions.