4.3.1 Atmel AVR UC3 OCD (JTAG and aWire)

The Atmel AVR UC3 OCD system is designed in accordance with the Nexus 2.0 standard (IEEE-ISTO 5001™-2003), which is a highly flexible and powerful open on-chip debug standard for 32-bit microcontrollers. It supports the following features:

• Nexus compliant debug solution

• OCD supports any CPU speed

• Six program counter hardware breakpoints

• Two data breakpoints

• Breakpoints can be configured as watchpoints

• Hardware breakpoints can be combined to give break on ranges

• Real-time program counter branch tracing, data trace, process trace (not supported by Atmel JTAGICE3)

For more information regarding the UC3 OCD system, consult the AVR32UC Technical Reference Manuals, located on www.atmel.com/uc3.