Re: 有關24FJ64GA702說明書CN腳位問題

作者 jason680 於 2017年05月23日 09:11:19
http://ww1.microchip.com/downloads/en/DeviceDoc/30010118b.pdf

11.3 Interrupt-on-Change (IOC)
...
Each Interrupt-on-Change (IOC) pin has both a weak
pull-up and a weak pull-down connected to it. The pull-
ups act as a current source connected to the pin, while
the pull-downs act as a current sink connected to the
pin. These eliminate the need for external resistors
when push button or keypad devices are connected.

來自: http://www.microchip.com.tw/newbb/viewtopic.php?forum=2&topic_id=20834&post_id=75295