Product Data Sheet
Arduino MKR WAN 1310 
4.3 Debug 
On the back side of the board, under the ATSAMD21G18, there is a footprint for a 3x2 test pads with 100 
mil pitch of which only 5 pads are populated. 
Pin 
Function 
Type 
Description 
1 
+3V3 
Power Out 
2 
SWD 
Digital 
Single Wire Debug Data 
3 
RESETN 
Digital In 
Processor Reset 
4 
SWCLK 
Digital In 
Single Wire Debug Clock 
5 
GND 
Power 
9 / 15 
Arduino MKR WAN 1310 - 12/23/2020 










