I did some tests and found that pin nTRST can be used as a normal (?) GPIO pin. It seems that it is P0.7 with an internal programmmable pull-down resistor. Is this correct ?
Yes this is correct, but be careful to use it. On a normal evaluation-board it is connected and used by the JTAG-emulator! Also during POR it is checked to start the internal boot-loader!
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