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Recommended electrical connection for SWD/JTAG port

Question asked by winchenbach.samuel on Apr 12, 2013
Latest reply on Apr 12, 2013 by winchenbach.samuel
Hi All,

I am building a custom board with a STM32F415ZG.  I was wondering if there is any documentation recommending how to connect the debug header?  

Is it safe to directly connect VDD to pins 1-2, GND to the numerous gnd pins, PA13 (SWDIO) to pin 7, PB14 (SWCLK) to pin 9, NRST to pin 15, PB3 (TRACESWO) to pin 13?  I don't plan on using so JTAG so I would leave the others disconnected.

The only reason I ask is because I looked at a number of Olimex reference designs and noticed some pull-ups and series resistors.  I in reading the datasheet that internal pull ups are enabled so I am not sure why Olimex is doing that.   I figured I should ask before making a costly, game ending mistake!

Thanks,
Sam

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