The MR82C59A5/B, manufactured by Rochester Electronics, is a Programmable Interrupt Controller (PIC). This device manages interrupt requests from multiple sources and prioritizes them before passing them to the CPU. As a second source manufacturer, Rochester Electronics ensures the continued availability of this critical component.

Applications:

• Industrial Control Systems
• Data Acquisition Systems
• Peripheral Controllers
• Embedded Systems
• Robotics
• Instrumentation

Features:

• Manages eight interrupt inputs
• Programmable interrupt priorities
• Fully compatible with Intel 8080/8085 and Z80 microprocessors
• Individually maskable interrupt inputs
• Interrupt vectoring capability
• Cascadable for handling more than eight interrupts
• Single 5V supply operation

Benefits:

• Efficient interrupt management improves system responsiveness.
• Programmable priorities allow critical interrupts to be handled promptly.
• Compatibility with popular microprocessors simplifies system integration.
• Maskable interrupts enable selective enabling or disabling of interrupt sources.
• Cascading capability allows for expansion to handle a larger number of interrupts.

Technical Specifications:

The MR82C59A5/B operates from a single 5V power supply. It is designed to interface directly with the interrupt input of microprocessors like the Intel 8080/8085 and Z80. The device provides programmable interrupt priorities and interrupt vectoring capabilities, allowing the CPU to quickly identify and service the interrupting device. The interrupt inputs can be individually masked to enable or disable specific interrupt sources. The MR82C59A5/B can be cascaded to handle more than eight interrupt inputs. Refer to the device datasheet for detailed timing diagrams, programming information, and application notes.