The Atmel JTAGICE mkII target interface provides access to Atmel’s JTAGICE mkII. Both USB and serial port host PC connections are supported as is JTAG, debugWIRE and ISP target connection. The JTAG and debugWIRE target connections support program loading and debugging. The JTAG and ISP connections support access to the lock bits and fuse bits. When debugging with the JTAG interface three hardware breakpoints are available for use, however one of these breakpoints will be needed for single stepping. Two of the hardware breakpoints can be used as data breakpoints. When debugging with the debugWIRE interface no hardware breakpoints are available.

###### Target window specific context menu entries

Disconnect (Disable debugWIRE).
  This requires the ISP connection as well as the debugWIRE connection and will disable the DWEN fuse and disconnect.
Fuse Bits.
  This displays the fuse bits editor.
Lock Bits.
  This displays the fuse bits editor.

###### Connection property group

Baud Rate
  The speed the serial port connection runs at.
Port Name
  The name of the serial port.
External Reset
  Specifies if an external reset is to be performed on JTAG device identify and chip erase.
Hardware Breakpoints
  If set then only hardware breakpoints will be used. If not set then software breakpoints will be used unless a hardware breakpoint is specifically requested.
Hardware Version
  The hardware version of the JTAGICE mkII.
Serial Number
  The serial number of the JTAGICE mkII.
Software Version
  The software version of the JTAGICE mkII.
Target Clock Frequency
  Specifies the target clock frequency - this is used to compute the JTAG clock frequency.
USB Serial Number
  The serial numbers of the JTAGICE mkII. This is updated each time a USB connection is made.

###### Current property group

Device Type
  The AVR device type, identified from the JTAG ID or the signature bytes.
Fuse Bits
  The fuse bits of the device.
JTAG ID
  The JTAG id.
Lock Bits
  The lock bits of the device.
Oscillator Callibration Bytes
  The oscillator callibration bytes of the device.
Signature Bytes
  The signature bytes of the device.
Target Voltage
  The target voltage.

###### JTAG Daisy Chain

These properties can be used if the target AVR is in a JTAG Daisy Chain.

Devices After
  The number of JTAG devices after the AVR target.
Devices Before
  The number of JTAG devices before the AVR target.
Instruction Bits After
  The combined number of IR bits of the devices after the target.
Instruction Bits Before
  The combined number of IR bits of the devices before the target.