1˵
    1TIM2 CH3ؼLSIƵʣͨLSI TrimУ׼LSIʱӣLSIƫ


2ʹû
      KEIL MDK-ARM 5.34
    Ӳ      
     N32G05xϵУ
            N32G05xRBQ7_STB V1.0
       N32G05xϵУ
            N32G05xRBL7_STB V1.0

3ʹ˵
    ϵͳ:
        1ʱԴ
                    HSI=8M,PLL=64M,AHB=64M,APB1=32M,APB2=64M,TIM2 CLK=64M
        2жϣ
                    TIM2 CH3жϴ
        3˿ã
                    LSIΪΪTIM2 CH3
                    PB3ѡΪMCO 
        4TIM
                    TIM2 CH3 زжϴ
    ʹ÷   
        1ؽоƬͨʾץȡPB3ŲΣ۲Ƶ

4ע
	
	
	
	
1. Function description
     1. TIM2 CH3 rising edge calculates LSI frequency, calibrates LSI clock through LSI Trim, available for LSI deskew.

2. Use environment
    Software development environment: KEIL MDK-ARM 5.34
    Hardware environment: 
     N32G05x series:
            Developed based on the evaluation board N32G05xRBQ7_STB V1.0
      N32G05x series:
            Developed based on the evaluation board N32G05xRBL7_STB V1.0

3. Instructions for use
    System Configuration;
        1. Clock source:
                    HSI=8M,PLL=64M,AHB=64M,APB1=32M,APB2=64M,TIM2 CLK=64M
         2. Interruption:
                     TIM2 CH3 rising edge interrupt is turned on
         3. Port configuration:
                     LSI is configured as a TIM2 CH3 input
                     PB3 is selected as MCO output
         4. TIM:
                     TIM2 CH3 rising edge capture interrupt is turned on
     Instructions:
         1. After compiling and downloading into the chip, grab the PB3 pin waveform through an oscilloscope and observe the frequency

4. Matters needing attention
     without
	