4.3.11 Crypto Footprint

Several of Atmels security devices, including CryptoAuthentication devices like the ATSAH204A, only requires I²C to interface and they share the same packages and pinouts. SAM V71 Xplained Ultra has implemented SOIC8 and UDFN8 footprints for these devices so the user may solder them on themselves. Table 4-32 shows all connections between the footprint and the ATSAMV71Q21.

Table 4-32. Crypto Footprints
Pin on footprint	SAM V71 pin	Function	Shared functionality
1	-	NC
2	-	NC
3	-	NC
4	-	GND
5	PA03 [TWD0]	I²C data line	EXT1, EXT2, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, and Shield
6	PA04 [TWCK0]	I²C clock line	EXT1, EXT2, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, and Shield
7	-	NC
8	-	VCC_TARGET_P3V3
PADDLE	-	GND