The table below shows the pin-out differences between revision 2 and revision 4 of the SAM L22 Xplained Pro. The table refers to the net names on the kit as used in the schematics.
| Connector/Pin | Revision 2 | Revision 4 |
|---|---|---|
| EXT2-09 | PB06_GPIO_IRQ6 (PTC/XY[12]) | PC00_GPIO_IRQ8 |
| EXT2-10 | PB07_GPIO_SS (PTC/XY[13]) | PC01_GPIO_SS_SW0 |
| EXT5-39 | PC00_QTBTN1_SLCDX1 (PTC/XY[4]) | PB06_QTBTN1_SLCDX1 (PTC/XY[12]) |
| EXT5-37 | PC01_SW0_SLCDX2 (PTC/XY[5]) | PB07_SLCDX2 (PTC/XY[13]) |
| EXT5-38 | PB05_GPIO_SLCDY2 (PTC/XY[11]) | PB04_GPIO_SLCDY2 (PTC/XY[10]) |
| EXT5-40 | PB04_GPIO_SLCDY1 (PTC/XY[10]) | PB05_GPIO_SLCDY1 (PTC/XY[11]) |
| DGI_GPIO2 | PB06_GPIO_IRQ6 (PTC/XY[12]) | PC00_GPIO_IRQ8 |
| DGI_GPIO3 | PB07_GPIO_SS (PTC/XY[13]) | PC01_GPIO_SS_SW0 |
| QT_BTN1 | PC00_QTBTN1_SLCDX1 (PTC/Y[4]) | PB06_QTBTN1_SLCDX1 (PTC/XY[12]) |