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 1. 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, 2EDBG IC,LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
12 [TWI_SCL] PA04 TWICK0 EXT2, 2EDBG IC,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 2. 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, 2EDBG IC,LCD, Camera, Audio, PLL, MediaLB, EEPROM, Crypto, and Shield
12 [TWI_SCL] PA04 TWCK0 EXT1, 2EDBG IC,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