User manual

Atmel AVR32924: UC3-L0 XPLAINED Hardware User’s Guide [APPLICATION NOTE]

32156C−AVR−06/2013

Table 3-4. UC3-L0 Xplained I/O Expansion Header – J3.

Pin J3 UC3 pin Shared with onboard functionality

1 PWM0 PA13 RGB LED (RED), RC filter input

2 PWM1 PA17 RGB LED (GREEN)

3 PWM2 PA20 RGB LED (BLUE)

4 PWM3 PA22 QMatrix slider X2

5 PWM4 PB12 QTouch SNS

6 PWM5 PB09 QTouch SNSK

7 PWM6 PB04 LED1

8 PWM7

(1)

PA11 LED0, mechanical button

9 GND - -

10 VCC_P5V0

(2)

- -

Notes:

1. Mechanical button and LED0 are sharing I/O. Use input with pull-up to turn off LED, and output low to turn

on LED.

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

Table 3-5. UC3-L0 Xplained I/O Expansion Header – J4.

Pin J4 UC3 pin Shared with onboard functionality

1 TWI SDA PA21 Header J1, board controller

2 TWI SCL PB05 Header J1, board controller

3 UART RX PB11 Header J1

4 UART TX PB10 Header J1

5 SPI CS0 PB00 -

6 SPI MOSI PB03 Header J1, DataFlash

7 SPI MISO PB02 Header J1, DataFlash

8 SPI SCK PB01 Header J1, DataFlash

9 GND - -

10 VCC_P3V3 - -