Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Hoja De Datos

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Atmel | SMART SAM D20 [DATASHEET]

Atmel-42129K–SAM-D20_datasheet–06/2014

For programming and/or debugging the SAM D20 the device should be connected using the Serial Wire Debug, SWD, 
interface. Currently the SWD interface is supported by several Atmel and third party programmers and debuggers, like 
the SAM-ICE, JTAGICE3 or SAM D20 Xplained Pro (SAM D20 evaluation kit) Embedded Debugger.

Refer to the SAM-ICE, JTAGICE3 or SAM D20 Xplained Pro user guides for details on debugging and programming 
connections and options. For connecting to any other programming or debugging tool, refer to that specific programmer 
or debugger’s user guide.

The SAM D20 Xplained Pro evaluation board for the SAM D20 supports programming and debugging through the 
onboard embedded debugger so no external programmer or debugger is needed.

For debuggers and/or programmers that support the Cortex Debug Connector (10-pin) interface the signals should be 
connected as shown in 

 with details described in 

C

XIN32

3.05pF

Equivalent internal pin capacitance

C

XOUT32

3.29pF

Equivalent internal pin capacitance

SWDCLK

Serial wire clock pin

SWDIO

Serial wire bidirectional data pin

1

VTref

GND

GND

NC

NC

SWDIO

SWDCLK

NC

NC

nRESET

Cortex Debug Connector

(10-pin)

GND

SWDIO

SWCLK

RESET

V

DD