AVR JTAG ICE user manual introduces AVR JTAG ICE related information, including the concepts of JTAG ICE and OCD systems, the comparison with traditional simulation methods, the differences between JTAG ICE and traditional ICE operations, the running mode, the stop mode, the single step execution mode, the continue execution mode, the single step debugging, the single step execution, the memory reading and writing, the exception information, the AVR JTAG ICE programming tool usage methods, etc.