4.3.3 Atmel megaAVR OCD (JTAG)

The Atmel megaAVR OCD is based on the JTAG physical interface. It supports the following features:

  • Complete program flow control

  • Four program memory (hardware) breakpoints (1 is reserved)

  • Hardware breakpoints can be combined to form data breakpoints

  • Unlimited number of program breakpoints (using BREAK instruction) (except ATmega128[A])

For special considerations regarding this debug interface, see Special Considerations.