PIC16F688比较器和VREF如何连接

PIC16F68 8的数据表没有说明内部电压基准是如何连接到比较器-倒相或非倒相输入的？http://WW1.Microchip .com……N/DeviceDoc /4120 3E.PDFAL，我只想使用一个比较器，但我不希望输出在外部引脚上——我只需要在代码中看到它，无论是通过中断还是轮询。“一个独立的比较器CM & lt；2:0& gt；＝101”将输出放在外部引脚上。我不想为比较器的输出浪费一个引脚。有可能吗？综上所述，我想使用一个带有内部电压基准的比较器，并用软件处理比较器输出。



      以下为原文

    The datasheet for the PIC16F688 does not say how the internal voltage reference is connected to the comparators - inverted or non-inverted inputs?
http://ww1.microchip.com/...n/DeviceDoc/41203E.pdf

Also, I would like to use only one comparator but I do not want the output on an external pin - I only need to see it in code, whether by an interrupt or by polling.
"One Independent Comparator CM<2:0> = 101" puts the output on an external pin.
And I do not want to waste a pin for the comparator output. Is it possible?

So, to sum up, I want to use a single comparator, with internal voltage reference, and process the comparator output in software.
Total I/O pins used: 1


Thanks.