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Re: disPIC未使用腳位防干擾問題請教?
#2
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CMOS 最怕接腳浮接,可以的話將它設成輸出並設成 Low。要是當輸入腳的話就直接接地即可。要避免干擾可以在 MCLR 加上 10K pull-up 及 0.1uF 電容下地,因為家電容連上 ICD2 了。電路上的反交聯電容一定要加且要加的正確。

發表於: 2009/5/6 12:05
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disPIC未使用腳位防干擾問題請教?
#1
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請教各位先進:
個人使用dsPIC30f4012,有些腳位未使用,請問這些未用的pin腳要如何對待,以降低外在環境干擾,是要接成GND?接GND需不需先接電阻?還是要串電阻後接VDD,若要串電阻需要多少歐姆?另外此腳位要設成Input?還是Output?若設成Output,則設此輸出為HIGH或LOW?

發表於: 2009/5/5 21:02
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