嗨人。数据表显示这些引脚在配置期间内部上拉至VAUX：PROG_B，DONE和INIT_B数据表还表示，在从串行配置期间，这些引脚需要外部4.7K上拉电阻。为什么他们有内部的时候需要外部引体？以上来自于谷歌翻译以下为原文Hi people.Datasheet says that these pins have internal pull-up to VAUX during configuration:PROG_B, DONE and INIT_BDatasheet also says that external 4.7K pull-ups are needed on these pins during slave serial configuration.Why do they need external pull-ups when they have internal ones ???
2019-05-20 12:45
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2023-06-01 06:26
