Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet

 

 

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

32159C

−AVR−07/2012 

5

The kit can be programmed either from an external programming tool or through a USB bootloader which is pre-
programmed on the device. 

The bootloader is evoked by pushing the push button (SW0) during power-on. I.e. push button and then connect an 
USB cable to the kit. Programming can be performed through the DFU target (bootloader programmer target) with FLIP. 

How a programmer can be connected to the kit is described in Section 

. 

The Atmel UC3-A3 Xplained kit has five 10-pin, 100mil headers. Two headers have a fixed communication interface (J1 
and J4). One header has analog functionality (J2), and the last header (J3) has general purpose digital I/O. 

The 90° angled header is the JTAG programming and debugging header for the AT32UC3A3256. 

For the location of the respective headers, refer to 

. 

The AT32UC3A3256 can be programmed and debugged by connecting an external programming/debugging tool to the 
JTAG header. The header has a standard JTAG programmer pinout (refer to online help in Atmel Studio), and tools 
such as JTAGICE3 or AVR ONE! can thus be connected directly to the header. 

Note: 

 

The grey female 10-pin header on JTAGICE mkII has to be used when connecting to the kit. A scoring in the board 
is made to fit the orientation tab on the header. 

Note: 

 

A standoff adapter (no. 1) is needed when using AVR ONE!. 

Note: 

 

Pin 1 on the JTAG header is at the top right corner and is marked with a square pad. 

1 

TCK 

2 

GND 

3 

TDO 

4 

VCC 

5 

TMS 

6 

nSRST 

7 

- 

8 

- 

9 

TDI 

10 

GND 

Note: 

1.  Standard pinout for JTAGICE3 and other Atmel programming tools. 

There are four available I/O expansion headers on the kit. Some pins have shared functionality with onboard 
functionality. If “clean” expansion ports are needed, there are available cut-straps on some of the ADC inputs to remove 
onboard functionality. 

 show what is shared on the header pins.