4.1.5 Cortex Debug Connector

SAM L21 Xplained Pro has a 10-pin 50-mil Cortex® Debug Connector that can be used to attach external debuggers to the ATSAML21J18B.

Table 4-6. Cortex Debug Connector
Cortex Debug Connector pinPin / NetFunctionShared functionality
1VCC_TARGET_P3V3ATSAML21J18B voltage
2PA31SWD data signal EDBG SWD
3GNDGround
4PA30SWD clock signalEDBG SWD
5GNDGround
6--
7--
8--
9GNDGround
10RESETNTarget reset signal