Atmel Evaluation Kit for ATXMEGA384C3, 8/16-bit XMEGA C3 Microcontroller Atmel ATXMEGAC3-XPLD ATXMEGAC3-XPLD 데이터 시트

 

 

Atmel AVR1925: XMEGA-C3 Xplained Hardware User’s Guide [APPLICATION NOTE] 

42053A

−AVR−02/2013 

8

The Atmel AVR XMEGA-C3 Xplained has a microSD card standard connector mounted. The SWA is used for detecting 
the microSD card. When a misroSD card plugs in, the SWA will be pulled to GND. The connection to the MCU is shown 
in 

PD1 

SCK 

PD3 

MOSI 

PD2 

MISO 

PE5 

SS 

PE4 

SWA 

The XMEGA-C3 Xplained kit has one Atmel QTouch button and the connection to the Atmel AVR XMEGA is shown 
in 

. The QTouch sensor, a copper fill, is located on the second layer of the board (same as GND layer). The 

sensor is shielded by the third layer (VCC layer) and therefore the sensor is not affected by any touches from the back 
side of the board. 

PF4 

SNS0 

PF5 

SNSK0 

PF6 

SNS1 

PF7 

SNSK1 

Two mechanical buttons are connected to Atmel AVR XMEGA. All buttons have external pull-ups so there is no need to 
activate internal pull-ups in order to use them. When a button is pressed it will drive the I/O line to GND. 

PF1 

SW0 

PF2 

SW1 

There are four LEDs available on the board that can be turned on and off. Two yellow LEDs, one green LED (power 
indicator LED), and one red LED (status LED). The green and red LEDs are inside the same package and therefore the 
colors can be mixed to orange when both are activated. The yellow LEDs and the red LED can be activated by driving 
the connected I/O line to GND. The green LED is controlled via a FET and is by default on when the board is powered. 
However, this power indicator LED can also be turned off by driving the gate of the FET to GND.