4.2.1 Extension Headers

The Xplained Pro headers EXT1 and EXT2 on SAM V71 Xplained Ultra offers access to the I/O of the microcontroller in order to expand the board e.g. by connecting extensions to the board. The headers have a pitch of 2.54mm.

Table 4-2. Extension Header EXT1
EXT1 pin	SAM V71 pin	Function	Shared functionality
1 [ID]	-	-	Communication line to the ID chip on an extension board
2 [GND]	-	-	Ground
3 [ADC(+)]	PC31	AFE1_AD6	Shield
4 [ADC(-)]	PA19	AFE0_AD8	Ethernet and Shield
5 [GPIO1]	PB03	GPIO/RTS0	Camera, MediaLB, and Shield(2)
6 [GPIO2]	PB02	GPIO/CTS0	MediaLB and Shield(2)
7 [PWM(+)]	PA00	PWMH0	Shield
8 [PWM(-)]	PC30	TIOB5	LCD
9 [IRQ/GPIO]	PD28	WKUP5	EDBG GPIO, Camera, LCD, and Shield(2)
10 [SPI_SS_B/GPIO]	PA05	GPIO	Camera and Shield
11 [TWI_SDA]	PA03	TWID0	EXT2, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
12 [TWI_SCL]	PA04	TWICK0	EXT2, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
13 [USART_RX]	PB00	RXD0	Audio and Shield(2)
14 [USART_TX]	PB01	TXD0	Audio and Shield(2)
15 [SPI_SS_A]	PD25	SPI0_NPCS1	Camera and Shield
16 [SPI_MOSI]	PD21	SPI0_MOSI	EXT2, EDBG SPI, Audio, Camera, and Shield(2)
17 [SPI_MISO]	PD20	SPI0_MISO	EXT2, EDBG SPI, and Shield(2)
18 [SPI_SCK]	PD22	SPI0_SPCK	EXT2, EDBG SPI, Camera, and Shield(2)
19 [GND]	-	-	Ground
20 [VCC]	-	-	Power for extension board

Table 4-3. Extension Header EXT2
EXT2 pin	SAM V71 pin	Function	Shared functionality
1 [ID]	-	-	Communication line to the ID chip on an extension board
2 [GND]	-	-	Ground
3 [ADC(+)]	PD30	AFE0_AD0	Camera and Shield(2)
4 [ADC(-)]	PC13	AFE1_AD1	LCD and Shield
5 [GPIO1]	PA06	GPIO	Camera, MediaLB, and Shield
6 [GPIO2]	PD11	GPIO	Camera, Audio, and Shield
7 [PWM(+)]	PC19	PWMC0_PWMH2	Camera and Shield
8 [PWM(-)]	PD26	PWMC0_PWML2	Audio and Shield
9 [IRQ/GPIO]	PA02	WKUP2/GPIO	EDBG GPIO, LCD and Shield
10 [SPI_SS_B/GPIO]	PA24	GPIO	Camera and Shield
11 [TWI_SDA]	PA03	TWCK1	EXT1, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
12 [TWI_SCL]	PA04	TWCK0	EXT1, EDBG I²C, LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
13 [USART_RX]	PA21	RXD1	EDBG CDC and Shield
14 [USART_TX]	PB04	TXD1	EDBG CDC, MediaLB and Shield
15 [SPI_SS_A]	PD27	SPI0_NPCS3	Camera and Shield(2)
16 [SPI_MOSI]	PD21	SPI0_MOSI	EXT1, EDBG SPI, Audio, Camera, and Shield(2)
17 [SPI_MISO]	PD20	SPI0_MISO	EXT1, EDBG SPI, and Shield(2)
18 [SPI_SCK]	PD22	SPI0_SPCK	EXT1, EDBG SPI, Camera, and Shield(2)
19 [GND]	-	-	Ground
20 [VCC]	-	-	Power for extension board