The CD82C59A-5 is a Programmable Interrupt Controller (PIC) manufactured by Intersil. It is designed to manage interrupt requests from multiple peripheral devices and prioritize them for the CPU. This component is crucial in systems requiring efficient handling of various interrupt signals, ensuring timely responses to critical events. The CD82C59A-5 supports eight interrupt inputs and can be cascaded to handle up to 64 interrupts. Note that the part is listed as End-Of-Life, meaning it is no longer in production and may be difficult to source.

Applications

• Industrial Control Systems
• Data Acquisition Systems
• Embedded Systems
• Robotics
• Process Control

Features

• Interrupt Inputs: 8 Independent Interrupt Inputs
• Cascadability: Can be cascaded to handle up to 64 interrupts
• Priority Resolution: Fully programmable interrupt priority
• Interrupt Masking: Individual masking of interrupt requests
• Operating Voltage: 5V
• Package Type: DIP (Dual In-line Package)

Benefits

• Efficient Interrupt Handling: Simplifies interrupt management in complex systems.
• Programmable Priority: Allows for customization of interrupt priorities based on system requirements.
• Reduced CPU Overhead: Offloads interrupt handling from the CPU, improving system performance.
• Flexibility: Adaptable to a wide range of interrupt-driven applications.
• Compatibility: Designed to interface with a variety of microprocessors and microcontrollers.

Additional Details

The CD82C59A-5 operates on a 5V power supply and is typically available in a DIP package, which facilitates easy prototyping and board assembly. It supports various interrupt modes, including fully nested mode, rotating priority mode, and polled mode. The device's internal registers allow for programming of interrupt priorities, masking of individual interrupt inputs, and reading the status of pending interrupts. Proper configuration of the interrupt controller is crucial for reliable system operation. Due to its EOL status, consider direct replacements or newer generation interrupt controllers for new designs.