SAM C21 Systick Overview

Last modified by Microchip on 2023/11/10 11:08

The SAM C21 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.

SAM C21 ARM® Cortex®-M0+ Processor Core System Timer Module (SysTick)

This hardware may be configured to periodically generate an interrupt and trigger the following handler routine:

void SysTick_Handler(void){

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The SysTick operation is specified in Section B3.3 of the "ARM®v6-M Architecture Reference Manual."