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G2452外接高频晶振?



G2452不能外接高频晶振? 只能接32k?

要用到高频怎么办?DCO? 额 倍频 锁频环 也没有吧?

  • G2系列不支持高频晶体,只能接32K

    如果可以用内部DCO产生时钟,经过校正的DCO频率在全温度范围内误差为+-6%,看您能不能接受了

  • Guo Yan,你好!

    MSP430G2xx既不支持LFXT1的HF Mode,也没有XT2,故如 鸵鸟蝈蝈 所说,不支持高频晶振,只能外接32k。如果用到高频,只能用内部DCO,对于G2xx2而言,在flash中存有4个在出厂时就校准过的频率,分别为1,8,12,16MHz.,可以直接通过下列方式调用。

    BCSCTL1 = CALBC1_1MHZ;    // Set range  

    DCOCTL  = CALDCO_1MHZ;    // Set DCO step + modulation