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Step 1: Interrupt-Driven Timing and ISRs
Last modified by Microchip on 2026/06/26 07:39
Understanding Interrupt-Driven Timing and Interrupt Service Routines (ISRs)
A hardware timer is a peripheral that counts clock cycles independently of the main CPU.
Timers can be configured to generate interrupts at precise intervals, allowing the CPU to respond to time-based events without constant polling.
ISRs are special functions executed automatically in response to timer interrupts, enabling real-time control (such as toggling an LED).
Interrupt-driven timing allows the CPU to perform other tasks or enter low-power modes between interrupts, improving system efficiency.
Applications include periodic task scheduling, real-time control, and event-driven programming in embedded systems.
If you need to work with Microchip Support staff directly, you can submit a technical support case. Keep in mind that many questions can be answered through our self-help resources, so this may not be your speediest option.
