This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP430FG4618的DCO支持多大的频率?AD12的支持的最大转换频率是多少?

 我想问一下4618能支持多大的DCO频率,数据手册上推荐3.6V电压下频率8M;但是我们想要尽量提高AD12的采集转换速率,所以将其提高至16M,发现程序容易出现异常,是否16M频率太大,MCU负载过大?

还有,4618的AD最大采集转换速率是多少?

  • 该设备的最大工作频率(MCLK)为8MHz. 

    8M dco的话,是有相关例程的

    http://dev.ti.com/tirex/explore/node?node=AHKF33OSr1G6lo0JF8E2VQ__IOGqZri__LATEST 

    有关详细信息,请参阅用户手册第5章 5.2.5 Digitally Controlled Oscillator (DCO)。另请注意,DCO是RC型振荡器,因此它取决于电压和温度。如果需要较高的时钟精度,建议使用晶体或谐振器(最大8MHz)。

    The frequency range of fDCO is selected with the FNx bits as listed in Table 5−1. The range control allows the DCO to operate near the center of the
    available taps for a given DCOCLK frequency. The user must ensure that MCLK does not exceed the maximum operating frequency.