Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Scheda Tecnica

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ATSAMD20-XPRO
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Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
34.7.2 10-pin JTAGICE3 Compatible Serial Wire Debug Interface
The JTAGICE3 debugger and programmer does not support the Cortex Debug Connector (10-pin) directly, hence a 
special pinout is needed to directly connect the SAM D20 to the JTAGICE3, alternatively one can use the JTAGICE3 
squid cable and manually match the signals between the JTAGICE3 and SAM D20. 
connect a 10-pin header that support connecting the JTAGICE3 directly to the SAM D20 without the need for a squid 
cable.
To connect the JTAGICE3 programmer and debugger to the SAM D20, one can either use the JTAGICE3 squid cable, or 
use a 10-pin connector as shown in 
 with details given in 
 to connect to the target using the 
JTAGICE3 50 mil cable directly.
Figure 34-11.10-pin JTAGICE3 Compatible Serial Wire Debug Interface
Table 34-10. 10-pin JTAGICE3 Compatible Serial Wire Debug Interface
Header Signal Name
Description
SWDCLK
Serial wire clock pin
SWDIO
Serial wire bidirectional data pin
RESET
Target device reset pin, active low
VTG
Target voltage sense, should be connected to the device V
DD
GND
Ground
VTG
GND
NC
NC
SWDIO
SWDCLK
NC
NC
RESET
10-pin JTAGICE3 Compatible 
Serial Wire Debug Header
GND
SWDIO
SWCLK
RESET
V
DD
1
NC