慕课嵌入式开发及应用(第三章.周期中断定时器,低功耗定时器,实时时钟)

小咪咪 2023-07-15 04:56 5阅读 0赞

### 慕课苏州大学.嵌入式开发及应用.第三章.基本模块.周期中断定时器,低功耗定时器,实时时钟 ###

*  0 目录
 *  3 基本模块
 *   *  3.3 周期中断定时器,低功耗定时器,实时时钟
     *   *  3.3.1 课堂重点
         *  3.3.2 测试与作业
 *  4 下一章

# 0 目录 #

# 3 基本模块 #

## 3.3 周期中断定时器,低功耗定时器,实时时钟 ##

### 3.3.1 课堂重点 ###

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### 3.3.2 测试与作业 ###

> PIT、LPTMR、RTC模块中只能采用减1计数方式的模块是：  
> A.PITB.LPTMRC.RTCD.PIT、LPTMR、RTC都可以  
> 正确答案：A

> 1下面哪种时钟源可以用于PIT？  
> A.系统总线时钟  
> B.32.768kHz晶振时钟源  
> C.内部参考时钟  
> D.OSCERCLK时钟  
> 正确答案：A

> 2LPTMR的时钟源可以是：  
> A.1kHz的LPO时钟  
> B.32kHz的慢速IRC时钟  
> C.4MHz的快速IRC时钟  
> D.8MHz 的OSCERCLK时钟  
> 正确答案：A、B、C、D

> 3LPTMR的计数器采用增1计数方式。  
> A.B.  
> 正确答案：对

> 4RTC模块包含两个中断向量号，秒中断的中断向量号为（ ），其他中断对应的中断向量号为（ ）。  
> 正确答案：37 36

# 4 下一章 #

**博客地址:**

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