Microcontroller › 8051 › pull up resistor › hi guys, extension of this
May 12, 2012 at 7:53 am #7749
extension of this doubt…
why is the value of pull-up resistor used = 10k? for a supply of 5V, this yields a current of 0.5mA..
How does the microcontroller know whether there is a high signal or low signal on this pin?