Xplained Pro Standard Extension Headers

The SAM G53 Xplained Pro headers EXT1, EXT3, and EXT4 offer access to the I/O of the microcontroller in order to expand the board e.g. by connecting extensions to the board. These headers all comply with the Xplained Pro standard extension header specification. All headers have a pitch of 2.54mm.

Table 1. Extension Header EXT1
Pin on EXT1 SAM G53 pin SAM G53 peripheral function Shared functionality
1 [ID] - - Communication line to ID chip on extension board.
2 [GND] - - GND
3 [ADC(+)] PA17 AD0  
4 [ADC(-)] PA18 AD1  
5 [GPIO1] PB03 GPIO EDBG GPIO1
6 [GPIO2] PB09 GPIO EDBG GPIO3
7 [PWM(+)] PA00 TIOA0  
8 [PWM(-)] PA01 TIOB0  
9 [IRQ/GPIO] PA24 WKUP11  
10 [SPI_SS_B/GPIO] PA20 GPIO EXT3 connector (ADC)
11 [TWI_SDA] PB00 TWD2  
12 [TWI_SCL] PB01 TWCK2  
13 [USART_RX] PA05 USART RXD (URXD0) EDBG Data Gateway Interface (UART)
14 [USART_TX] PA06 USART TXD (UTXD0) EDBG Data Gateway Interface (UART)
15 [SPI_SS_A] PA11 SPI NPCS0  
16 [SPI_MOSI] PA13 SPI MOSI EXT3 connector
17 [SPI_MISO] PA12 SPI MISO EXT3 connector
18 [SPI_SCK] PA14 SPI SCK EXT3 connector
19 [GND] - - GND
20 [VCC] - - VCC
Table 2. Extension Header EXT3
Pin on EXT3 SAM G53 pin SAM G53 peripheral function Shared functionality
1 [ID] - - Communication line to ID chip on extension board.
2 [GND] - - GND
3 [ADC(+)] PA19 AD2  
4 [ADC(-)] PA20 AD3 EXT1 connector (GPIO)
5 [GPIO1] PB04 GPIO EDBG GPIO2
6 [GPIO2] - -  
7 [PWM(+)] PA21 TIOA2  
8 [PWM(-)] - -  
9 [IRQ/GPIO] PA22 WKUP10  
10 [SPI_SS_B/GPIO] PA15 GPIO EDBG GPIO0 and EXT4 (GPIO)
11 [TWI_SDA] PB10 TWD1 EDBG and EXT4 connector (TWI)
12 [TWI_SCL] PB11 TWCK1 EDBG and EXT4 connector (TWI)
13 [USART_RX] PA09 USART0 RXD EDBG (CDC UART)
14 [USART_TX] PA10 USART0 TXD EDBG (CDC UART)
15 [SPI_SS_A] PB02 SPI NPCS1  
16 [SPI_MOSI] PA13 SPI MOSI EXT1 connector (SPI MOSI)
17 [SPI_MISO] PA12 SPI MISO EXT1 connector (SPI MISO)
18 [SPI_SCK] PA14 SPI SCK EXT1 connector (SPI SCK)
19 [GND] - - GND
20 [VCC] - - VCC
Table 3. Extension Header EXT4
Pin on EXT4 SAM G53 pin SAM G53 peripheral function Shared functionality
1 [ID] - - Communication line to ID chip on extension board.
2 [GND] - - GND
3 [ADC(+)] - -  
4 [ADC(-)] - -  
5 [GPIO1] PA15 GPIO EDBG GPIO0 and EXT3 (GPIO)
6 [GPIO2] - -  
7 [PWM(+)] - -  
8 [PWM(-)] - -  
9 [IRQ/GPIO] PB08 WKUP14  
10 [SPI_SS_B/GPIO] - -  
11 [TWI_SDA] PB10 TWD1 EDBG and EXT3 connector (TWI)
12 [TWI_SCL] PB11 TWCK1 EDBG and EXT3 connector (TWI)
13 [USART_RX] - -  
14 [USART_TX] - -  
15 [SPI_SS_A] - -  
16 [SPI_MOSI] - -  
17 [SPI_MISO] - -  
18 [SPI_SCK] - -  
19 [GND] - - GND
20 [VCC] - - VCC
Parent topic: Connectors
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