嗨，我正在设计一个带有PIC32 MX170F256B的PCB，它将管理一个矩阵键盘。为了消除终端配置成输入的可能的电噪声，我认为我可以使用内部上拉电阻结合外部电容器来形成RC型滤波器。我的问题是：它是不是？有可能做到这一点吗？如果答案是肯定的，这些电阻值是多少？（我在数据表中搜索过，我找不到有关它的价值的信息）谢谢 以上来自于百度翻译 以下为原文 Hi. I'm designing a PCB with a PIC32MX170F256B which will manage a matrix keyboard.To eliminate possible electrical noise the terminals configured as input, I think that I could use the internal pull-up resistors in conjunction with external capacitors to form RC-type filters.My questions are:Is it possible to do that?If the answer is yes, what is the value of these resistances? (I searched for it, in the data sheets and I can not find information about its value)Thanks
2018-11-30 16:23
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