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TCAN4550和TCAN4551的区别?

Other Parts Discussed in Thread: TCAN4550, TCAN4550-Q1

Hi Ti 工程师,

1.我在选型的时候看到TCAN4550和TCAN4551,但是发现官网上的4551价格更好一些,这两者有什么区别?

2.4550内部的LDO可不可以不用,会导致芯片无法正常工作嘛?

3.不加外部晶振,用MCU提供SCLK,这个给OSC1的时钟需要多少,是有一个范围嘛?