This is a DIY (Do-It-Yourself) assembly KIT implementation of the JTAG ICE clone for AVR microcontroller development and debugging.  This JTAG ICE device is a simplified version of the original Atmel JTAG ICE device.  Here is the original atmel jtag ice documentation.

• Compatible with AVR Studio 4.13
• Firmware upgradeable from AVR Studio
• RS232 connection to PC
• Standard 10-pin AVR JTAG connector
• On-chip debugging
• JTAG programming
• JTAG activity LED
• Affordable DIY KIT format
  

AVR Supported Devices:

ATmega16, ATmega162, ATmega162V, ATmega165, ATmega165V, ATmega169, ATmega169V, ATmega16L, ATmega32, ATmega323, ATmega323L, ATmega32L, ATmega64, ATmega64L, AT90CAN128， ATmega128, ATmega128L

JTAG ICE clone board Assembly Instructions

JTAG ICE clone Rev B board Assembly Instructions

Assembled JTAG ICE clone board