SAM D21 SysTick Overview

Last modified by Microchip on 2023/11/10 11:09

The SAM D21 Arm® Cortex®-M0+ Processor Core includes an optional System Timer Module (SysTick) that provides a simple, 24-bit clear-on-write, decrementing, wrap-on-zero counter with a flexible control mechanism.

Arm Cortex-M0+ Block diagram
This hardware may be configured to periodically generate an interrupt and trigger the following handler routine:

void SysTick_Handler(void){

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