Atmel AVR32918: UC3-A3 Xplained Hardware User’s Guide [APPLICATION NOTE]
32159C
−
AVR
−
07/2012
6
Table 3-2. UC3 I/O expansion header – J1.
Pin J1
UC3 pin
Shared with onboard functionality
1
TWI0 SDA
PA25
-
2
TWI0 SCL
PA26
-
3
USART3 RXD
PX57
-
4
USART3 TXD
PX58
-
5
SPI1 CS0
PB09
-
6
SPI1 MOSI
PB10
-
7
SPI1 MISO
PB08
-
8
SPI1 SCK
PB07
-
9
GND
-
-
10
VCC_P3V3
-
-
Table 3-3. UC3 I/O expansion header – J2.
Pin J2
UC3 pin
Shared with onboard functionality
1
ADC0
)
PA21
RC filter output
2
ADC1
)
PA22
NTC
3
ADC2
PA23
-
4
ADC3
PA24
-
5
ADC4
PA20
-
6
ADC5
PA19
-
7
ADC6
PA18
-
8
ADC7
PA17
-
9
GND
-
-
10
VCC_ANA_P3V3
-
-
Note:
1. ADC channels can be disconnected from onboard functions by cutting the available cut-straps on the
bottom side of the board.
Table 3-4. UC3 I/O expansion header – J3.
Pin J3
UC3 pin
Shared with onboard functionality
1
GPIO0
PA31
-
2
GPIO1
PA30
-
3
GPIO2
PA29
-
4
GPIO3
PA28
-
5
GPIO4
PA27
-
6
GPIO5
PB00
-
7
GPIO6
PB11
-
8
GPIO7
PX19
-
9
GND
-
-
10
VCC_P5V0
)
-
-
Note:
1. The VCC pin on this header has 5V and is connected to the USB power.