User manual

20
Atmel AVR32025
32150B-AVR-03/12
3.6 Expansion interface
The expansion interface on the AT32UC3L-EK offers the possibility to connect
various external devices to the AT32UC3L064.
3.6.1 Overview
Figure 3-14. Atmel AT32UC3L
-EK expansion interface logical view.
There are two expansion headers on the AT32UC3L-EK:
• The J8 header (labeled WLESS on the PCB) connects the Atmel RZ600
AT86RF231 radio board to provide wireless communication capabilities to the kit.
Signals on J8.1 and J8.2 are configurable with the J44 header. The Atmel
AT32UC3L064 modules available on J8 are USART1 and SPI0. Depending on the
J44 configuration, TWI0 is available too
• The J14 and J15 headers provide access to the AT32UC3L064’s GPIOs, ground,
and VCC3. This offers the possibility to check signals and/or to expand the board
with additional hardware