The Atmel JTAG ICE target interface provides access to Atmel’s JTAG ICE Mk I. This target interface supports program loading and debugging and access to the fuse and lock bits. When debugging with the JTAG ICE you will have access to four hardware breakpoints, however one of these breakpoints will be needed for single stepping. Two of the hardware breakpoints may be used as data breakpoints.

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

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 Version
  The hardware version of the JTAG ICE.
Software Version
  The software version of the JTAG ICE.
Target Clock Frequency
  Specifies the target clock frequency - this is used to compute the JTAG clock frequency.

###### Current property group

Device Type
  The AVR device type, identified from 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.