I use 14 pin download my program to MPC5744, What Type of TVS tube can be selected to avoid ESD ,please recommend me,thank you very much!
most of our customers do not add ESD diodes on JTAG pins because each GPIO (including JTAG signals) has internal ESD protection diode. See the datasheet for more information. I would just recommend to add external pull down resistor (~10k) on JCOMP signal which keeps the JTAG module in reset when debug probe is not connected and you can also add pull up resistors on TMS, TDI and TCK pins.
How to select the value of the resistor ?thank you very much!
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