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There was a discussion at company X for suggesting damping resistor on all I/O (P1~P10) and the JTAG in design as a default. As you know damping resistor is used for minimizing ringing between the High Low voltage. I have already proved by observing these lines through the oscilloscope (yes, there is capacitance of pF with the probe and it may not be 100% accurate), we did not observe any overshoot undershoot of the pins. However they wanted a visual simulation proof to prove that it may not be required.
Question 1: I do not know the type of Schmitt trigger used internally in the MSP430F47197. I would like to know if there is a sample circuit that I can review? Being already able to simulate would be better but a circuit of what is being used is fine.
Question 2: I was not able to locate in the specification and wanted to confirm. Is there a requirement in the MSP430F47197 document for damping resistor for the I/O ports?
Regards,
D.T.
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