User manual
30
AVR32919
32151A-AVR-09/10
Figure 4-17. Atmel AT32UC3C-EK Top View USB Virtual Com Port Interface
Location
4.7.2 UC3C-Specific Information
4.7.2.1 AT32UC3C0512C pinout for the USB Virtual Com Port Interface block
Table 4-24. UC3C pinout for the USB Virtual Com Port Interface block
QFP144
pin
GPIO GPIO alternate function Feature
78 PC05 USART2.RXD USART2 RX line
77 PC04 USART2.TXD USART2 TX line
4.7.3 Configuration & Test Points
4.7.3.1 AT32UC3CB1256 Default Firmware Configuration
The default firmware pre-loaded on the Atmel AT32UC3B1256 is dynamically
configurable upon power-up:
• The USB DFU Bootloader can be enabled by closing the J28 jumper; use
flip/batchisp to read/write resources on the AT32UC3B1256 through the
bootloader.
Warning note
: programming the AT32UC3B1256 will overwrite the default firmware.
J31
J27