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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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。