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ADS1271 时序问题

Other Parts Discussed in Thread: ADS1271

我把MODE接高电平 FORMAT接地工作在SPI低功耗模式下。当PDWN管脚接高电平时,发现RDRY、DOUT管脚均有波形输出。

请问:

1、当PDWN管脚为高电平时,ADC转换就启动了;

2,是不是没有SCK,DOUT也可以输出有效数据。

3、我用的是单片机的SPI口和其连接,应该如何操作,才能实现ADC数据的有效读取??