Function of pin

[abc88720]

I don’t know what is the function of this pin in my controller . Could anyone help me what is the purpose of this pin?

 

[stancecoke]

Could anyone help me what is the purpose of this pin?

TDO is a pin of the JTAG interface. You can debug or flash the processor via this interface.

J-Link Interface Description

Find out the how the signals of JTAG, cJTAG, SWD and SWO are mapped to the J-Links target interface.

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