4.3.1. Extension Headers
The Xplained Pro headers EXT1 and EXT2 on SAME70-XPLD give access to the I/O of the
microcontroller in order to expand the system, e.g. by connecting extensions boards. The headers have a
pitch of 2.54mm.
Table 4-1 EXT1 Header
EXT1 Pin SAM E70
Pin
Function Shared Functionality
1 [ID ] -- ID_EXT1 Signal connected to Embedded Debugger
2 [GND] -- -- Ground Connection with Extension Board
3 [ADC(+)] PC31 AFE1_AD6 J502 Header & J504 Header (Arduino Shield)
4 [ADC(-)] PA19 AFE0_AD8 J502 Header (Arduino Shield)
5 [GPIO1] PB3 GPIO/RTS0 Camera Connector, EXT2 Header, J504 Header &
J507 Header (Arduino Shield)
6 [GPIO2] PB2 GPIO/CTS0 EXT2 Header, J504 Header & J507 Header
(Arduino Shield)
7 [PWM(+)] PA0 PWMC0_H0 --
8 [PWM(-)] PC30 TIOB5 J502 Header (Arduino Shield)
9 [IRQ/GPIO] PD28 WKUP5 Camera Connector, Embedded Debugger, J503
Header & J505 Header (Arduino Shield)
10 [SPI_SS_B/GPIO] PC17 GPIO --
11 [I2C_SDA] PA3 TWD0 Camera Connector, EXT2 Header, J500 Header
(Arduino Shield), AT24MAC402, Embedded
Debugger
12 [I2C_SCL] PA4 TWCK0 Camera Connector, EXT2 Header, J500 Header
(Arduino Shield), AT24MAC402, Embedded
Debugger
13 [UART_RX] PB0 RXD0 EXT2 Header, J505 Header & J507 Header
(Arduino Shield)
14 [UART_TX] PB1 TXD0 EXT2 Header, J505 Header & J507 Header
(Arduino Shield)
15 [SPI_SS_A] PD25 SPI0_NPCS1 Camera Connector, J500 Header (Arduino Shield)
16 [SPI_MOSI] PD21 SPI0_MOSI EXT2 Header, Camera Connector, J500 Header &
J506 Header (Arduino Shield), Embedded
Debugger
17 [SPI_MISO] PD20 SPI0_MISO EXT2 Header, J500 Header & J506 Header
(Arduino Shield), Embedded Debugger
18 [SPI_SCK} PD22 SPI0_SPCK EXT2 Header, Camera Connector, J500 Header &
J506 Header (Arduino Shield), Embedded
Debugger
Atmel SAME70-XPLD [USER GUIDE]
Atmel-44050A-SAME70-XPLD_User Guide-12/2015
13
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