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- Category: Microcontrollers
- Founded: Mar 29, 2002
- Language: English
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Re: HCS12 to HCS12 Port interfacing
It doesn't matter which port(s) you use, you don't need a current limiting resistor. All ports default to input (and almost all with pull-up enabled) so they
Posted - Tue Nov 24, 2009 2:11 pm
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Tom Almy
tom_almy2000
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Re: HCS12 to HCS12 Port interfacing
I think the resistor is in case you accidentally configure both ports as output and drive them at opposite levels, thereby creating a short circuit. A
Posted - Mon Nov 23, 2009 9:24 pm
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Michael
pribusin
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Re: HCS12 to HCS12 Port interfacing
You could always configure the SCI ports. That would eliminate the concern to use a resistor. We did something like this during our lab using the HC12 board
Posted - Mon Nov 23, 2009 9:14 pm
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justin lucas
jlucas134@...
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HCS12 to HCS12 Port interfacing
Hello, I have two MC9S12DP512 microcontrollers, and I need to interface them. The first mc9s12, has port P set to output, the second mc9s12 has port T set to
Posted - Mon Nov 23, 2009 8:45 pm
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Jerry Fields
tronictech1
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Re: Controlling a Servo with the HC12?
Alright. I finally have it working properly. I had the wheels in a carriage and I was unable to get the proper leverage on the calibration screw and it wasn't
Posted - Sun Nov 22, 2009 2:30 pm
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defessler@...
defessler...
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