Hi!
I want to be able to turn on/off the 120 Ohm termination resistor that is placed at the input of my CAN-transciever. I want to do this with a GPIO from my MCU... Any ideas? I've seen a solution with a SPST- switch...will that work?
Termination switch
Nov 22, 2007
1 Replies
Not knowing the specifics of what CAN is, the solution can vary from simple to complex. If it's just some sort of 10-100KHz thing with slow edges, put the resistor to ground through an open-drain logic output. A logic low level enables the resistor, and a high floats it.
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