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 1. Cortex Debug Connector
| Cortex Debug Connector pin |
Pin / Net |
Function |
Shared functionality |
| 1 |
VCC_TARGET_P3V3 |
ATSAML21J18B
voltage |
|
| 2 |
PA31 |
SWD data signal |
EDBG SWD |
| 3 |
GND |
Ground |
|
| 4 |
PA30 |
SWD clock signal |
EDBG SWD |
| 5 |
GND |
Ground |
|
| 6 |
- |
- |
|
| 7 |
- |
- |
|
| 8 |
- |
- |
|
| 9 |
GND |
Ground |
|
| 10 |
RESETN |
Target reset signal |
|