Deactivate debug interfaces on S32K148

[michael_kirches]

Hello alll,

for our current project we are using S32K148 and are required to deactivate all debugging interfaces after production, such that memory can no longer be read by attaching an external debugger.

I'd like to ask if there's an option to do this in software, or if we have to find a solution in hardware?

Regards,

Michael

[michael_kirches]

Hi Daniel,

thanks for your reply, it helps a lot to solve our request.

Best Regads,

Michael

[danielmartynek · Accepted solution]

Hello Michael,

You can secure the MCU in the flash configuration filed.

Please refer to this example:

Example S32K144 Verify Backdoor Access Key S32DS1.3 

It uses Backdoor Access Key to unlock the MCU.

5.2.1.1 Flash memory security interactions with debug (S32K1xx RM rev.9).

BR, Daniel