AnsweredAssumed Answered

problem with jtag tck pin

Question asked by cameron.james on Jun 1, 2013
Latest reply on Jun 2, 2013 by cameron.james
hi
I have a problem with jtag tck pin on my board.When I touch it with my finger  the st-link Works properly & connect to stm32f417 but if  i remove my finger from this pin the st-link not connect to my mcu.i pull-down tck pin with 10k to gnd.Also, when i connect my board's gnd to pc case this problem can be solved.
What is the problem?why tck pin is sensitive to the touch of my finger???

Outcomes