AVR JTAG ICE JTAGICE MKII Programmer / Debugger -- Support JTAG / ISP / Debugwire for 8bit and 32bit AVR

  Tis item is 100% compatible with Atmel's AT JTAGICE mkII, It supports AVR32 series of MCUs and can upgrade with avrstudio's upgrade tool.
  a powerful development tool for On-chip Debugging of all AVR 8-bit RISC MCUs and AVR32 32-bit DSP/MCUs with IEEE 1149.1 compliant JTAG interface.
  Combined with AVR Studio the JTAGICE mkII can do On-Chip Debugging on all AVR 8-bit RISC microcontrollers with JTAG Interface or debugWIRE Interface. Click here for a list of supported devices.

JTAG
  The JTAG interface is a 4 wire Test Access Port (TAP) controller that is compliant with the IEEE 1149.1 standard. The IEEE standard was developed to enable a standard way to efficiently test circuit board connectivity (Boundary Scan). Atmel AVR devices have extended this functionality to include full Programming and On-Chip Debugging support.
  The JTAGICE mkII uses the standard JTAG interface to enable the user to do real time emulation of the microcontroller while it is running in the target system.
  The AVR On-Chip Debug (AVROCD) protocol gives the user complete control of the internal resources of the AVR microcontroller. Thus JTAGICE mkII gives accurate emulation at a fraction of the cost of traditional emulators.

DebugWIRE
  The debugWIRE interface adds a new way of doing On Chip Debug. The debugWIRE On-chip debug system uses a one-wire, bi-directional interface to control the program flow, execute AVR instructions in the CPU and to program the different non-volatile memories.
  When the debugWIRE Enable (DWEN) Fuse is programmed and Lock bits are un-programmed, the debugWIRE system within the target device is activated. The RESET port pin is configured as a wire-AND (open-drain) bi-directional I/O pin with pull-up enabled and becomes the communication gateway between target and emulator.
  Note that debugWIRE is a debugging interface only and not a programming interface.

ISP
  The JTAGICE mkII also supports full programming through the ISP interface. All JTAG and debugWIRE parts are supported. See Programming with JTAGICE mkII for more information.
  It works on either USB port or RS232 seriel port.

JTAGICE mkII features
  ◇AVR Studio Compatible (AVR Studio 4.09 or later)
  ◇Supports all AVR Devices with JTAG Interface
  ◇Supports all AVR Devices with debugWIRE Interface
  ◇Supports ISP programming of all JTAG and debugWIRE parts
  ◇Exact Electrical Characteristics
  ◇Emulates Digital and Analog On-Chip Functions
  ◇Software Breakpoints
  ◇Program Memory Breakpoints
  ◇Supports Assembler and HLL Source Level Debugging
  ◇Programming Interface to flash, eeprom, fuses and lockbits (JTAG only)
  ◇USB 1.1 and RS232 Interface to PC for Programming and Control
  ◇Regulated Power Supply for 9-12V DC Power
  ◇Can be powered from the USB alone
  ◇Same hardware for both interfaces (JTAG and debugWIRE)
  ◇Auto firmware upgrade if there is new firmware available in future new AVR Studio software.

8-bit AVR:
  The JTAGICE mkII also support devices with debugWIRE Interface. debugWIRE enables on-chip debug of AVR microcontrollers in small pin count packages, using only a single wire for the debug interface.
  The AVR Studio online-help contains the most current information and a complete list of supported devices.
  Read more about AVR 8-bit RISC microcontrollers.

32-bit AVR32:
The JTAGICE mkII is supported by the AVR32 Studio.
Read more about AVR32 32-bit MCU/DSP.

AVR XMEGA
Read AVR XMEGA from Atmel
More information,you can visit this url from atmel's JTAGICE mkII.