PIC单片机

PIC单片机的端口吞吐率有多高？

2020-02-09 11:43发布

站内问答 / 51单片机
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16和18系列的芯片，如果用来采集A/D转换过来的数据，能有多高的接受能力呢？
比如定义一个数组AD_Results=PORTE;这种读取方法，最快读取速度能有多快呢？
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7条回答
millwood0
2020-02-09 22:16
reading a port is just one instruction. But then you have to move the data to the ram location. so to be conservative, I would say it is a 2-3 cycles. That means if you are running at 4Mhz, you can read about one byte every 2 - 3 us.

then the math is simple after that.

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