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28033外扩DA芯片

Other Parts Discussed in Thread: SM73201

我想在28033上外扩一个精度更高的AD芯片SM73201,但是不知道该怎么设置处理器。

(1) 是通过SPI模块和DA芯片通讯吗?

(2) 那么只要设置CLK的时钟就可以了么?

(3) 如果我已经确定了最低的采样频率,比如200K,那么CLK这个时钟的频率该怎么计算?

问题有点多,本人菜鸟,谢谢大家!