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LM3402调光问题

首先,我对CS这个引脚的作用还没完全了解,在DIM脚固定上拉后是否可以通过更改CS脚的Rsns电阻值得大小来调光的亮度?是不是这款芯片只能用PWM调光,因为我的一块试验板上又块PIC16F505,想试试不用这个芯片行不行,通过硬件来调光,请不吝赐教,谢谢!