S32K142: Can't connect JTAG

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S32K142: Can't connect JTAG

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sripav-7
Contributor III

Hello,

I am trying to connect the S32K142 CPU on my custom board to program it. I am using the U-Multilink debugger. The amber light and the blue light on the debugger are turned on when I connect but if I try to debug, I get this error:

pastedImage_1.png

I tried with lower communication speed and with delay after reset and it still doesn't work. I probed the rest pin and there is pulse every few microseconds. I understand that this is normal behavior for new chips, but this behavior continue if I try to erase flash also (I don't get a notification to erase flash, but I can't manually erase it by running the flash partitioning example). This is how the JTAG port is connected to the MCU on my board:

pastedImage_2.png

I initially thought it was because the reset pin wasn't pulled up to 3.3v so I connected a 10k pullup. It still doesn't work, for some reason.

Please help!

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sripav-7
Contributor III

The MCU was damaged during soldering. It worked after I replaced it. 

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1,302 Views
sripav-7
Contributor III

The MCU was damaged during soldering. It worked after I replaced it. 

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