SAM E54 Xplained Pro implements a ATECC508A Crypto Authentication device. The table below shows all the connections between the ATECC508A and the ATSAME54P20A.
| ATECC508A pin | SAM E54 pin | Function | Shared functionality |
|---|---|---|---|
| 1 [NC] | - | - | - |
| 2 [NC] | - | - | - |
| 3 [NC] | - | - | - |
| 4 [GND] | - | GND | - |
| 5 [SDA] | PD08 | SERCOM7 PAD[0] I2C SDA | AT24MAC402, PCC, EXT2, EXT3, and EDBG DGI |
| 6 [SCL] | PD09 | SERCOM7 PAD[1] I2C SCL | AT24MAC402, PCC, EXT2, EXT3, and EDBG DGI |
| 7 [NC] | - | - | |
| 8 [VCC] | - | VCC_TARGET_P3V3 | - |
| 9 [PAD] | - | GND | - |