J-Link / J-Trace SWD pinout
VTref
1
NC
3
NC
5
SWDIO
7
SWCLK
9
NC
11
SWO
13
RESET
15
NC
17
5V-Supply
19
NC
2
GND
4
GND
6
GND
8
GND
10
GND
12
GND*
14
GND*
16
GND*
18
GND*
20