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SN74HC595: SN74HC595使用同一时钟

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Part Number: SN74HC595

1.在硬件设计时，为节约MCU端口将SN74HC595 11脚和12脚短接，这样能实现原本的正常逻辑吗？如果可以软件上有需要注意的地方吗？

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    TI__Guru**** 185470 points

    您好，

    可以的，11脚是SRCLK，12脚是RCLK，它们都是上升沿有效，连接在一起后，shift寄存器将始终是storage寄存器前一个时钟脉冲的值，或者说shift寄存器的值将始终在下一个时钟脉冲输出。