我最近要使用到AD1247,通过SPI接口和单片机接口,由于单片机IO数量的限制以及隔离芯片数量,和成本的限制,我想请问ADS1247和单片机接口最少可以用几根线完成,只用SCK,SDO,SDI,DRDY,使用一片ISO7242可以吗?RST引脚,START引脚,和CS引脚可以省去和单片机IO的接口而采用外围硬件完成可以吗?有相关应用资料吗?谢谢
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