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FAQs 对于数据手册中关于MAX30208 GPIO引脚的说明不是很清楚,能详细介绍一下吗?
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    • 对于数据手册中关于MAX30208 GPIO引脚的说明不是很清楚,能详细介绍一下吗?
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  • 使用AD936X Evaluation Software导出配置时,软件提示滤波器系数过多。

对于数据手册中关于MAX30208 GPIO引脚的说明不是很清楚,能详细介绍一下吗?

MAX30208的GPIO引脚有两个功能: 如果配置为输入模式(GPIO mode=10),该引脚用于确定MAX30208的器件地址,器件的上电默认状态就是作为器件地址设置引脚,该引脚内部带有1M下拉电阻,器件地址可以参见数据手册中的Table3。所以在上电后要确保GPIO引脚的电平固定才能确定其器件地址,然后和器件进行通讯,通讯成功后可以将引脚配置为输出模式或者GPIO1作为开始转换的输入以及GPIO0作为中断输出,这时候,器件的引脚电平不作为地址选择,可能地址和上电的默认值会不一致,随后的通讯要用新的器件地址和器件进行通讯。

 
 
Tags: MAX30208CLB+ MAX30208 KA-10968
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