我接了4片74HC165,用AT90S2313接收数据,有时很正常。有时有问题:比如第1片(最先移位出来的这片),很正确,但是第3、4片有时会漂位,而且,如果这时第1片的输入全0那么不会漂位。也就是说在第1片有非0输入时才会发生后面片的漂位。在发生漂位时,第1片的数据还是正确的。
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