User manual

Atmel AVR32918: UC3-A3 Xplained Hardware User’s Guide [APPLICATION NOTE]

32159C−AVR−07/2012

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

(1)

PA21 RC filter output

2 ADC1

(1)

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

(1)

- -

Note: 1. The VCC pin on this header has 5V and is connected to the USB power.