systick的时钟源
时间: 2023-10-24 16:07:54 浏览: 59
根据引用\[1\]和引用\[2\]的内容,SysTick的时钟源可以选择内核时钟源(FLCK)或外部时钟源(HCLK)。在STM32手册中,SysTick的时钟源被设置为HCLK,即外部时钟源。这意味着SysTick的时钟频率是HCLK的1/8,也就是9MHz。这个时钟频率被用来产生1ms的时间基准。
#### 引用[.reference_title]
- *1* *2* [SysTick时钟](https://blog.csdn.net/liukais/article/details/53926714)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [STM32的SysTick时钟源来自哪里?](https://blog.csdn.net/wofreeo/article/details/104176094)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]