Abhineet Tomar

Reset pin stays low on S32K144

Discussion created by Abhineet Tomar on Sep 4, 2017
Latest reply on Oct 16, 2019 by Marcelo Francisco Simbaña Romero

I have made a custom board with S32K144. When trying to boot it, the JTAG is unable to connect to the MCU.

On further inspection, turned out that the RESET pin is being pulled down by the MCU (It is connected to 5V through a 10K, but the controller is pulling it down). The voltage at RESET pin is mere 0.07 V. 


When I inspected the Reset pin with an oscilloscope, it had a repetitive spike at every 125µs (Image attached).


Is there anyone else who faced a similar issue and have managed to fix it?