Interrupt Handling and Timer Interfacing (8085/8086 Microprocessors with 8253/8254 Timer)
25 sections
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Sections
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What we have learnt
- Interrupts are signals indicating events requiring immediate attention from the microprocessor.
- The 8085 microprocessor handles hardware and software interrupts through various interrupt pins and control instructions.
- The 8254 timer can be programmed to generate precise time delays and square waves through its control words.
Key Concepts
- -- Interrupt
- A signal to the microprocessor indicating an event that requires immediate attention, causing a temporary halt in the current program execution.
- -- Interrupt Service Routine (ISR)
- A special routine executed in response to an interrupt, which performs necessary tasks and then returns control to the original program.
- -- Programmable Interval Timer (PIT)
- A device used to generate precise time intervals for events in microprocessor systems, such as the 8253/8254, allowing functionalities like delays and square wave generation.
Additional Learning Materials
Supplementary resources to enhance your learning experience.