AVR One! (ATAVRONEKIT) is a professional development tool for programming and on-chip debugging of Atmel 8-bit and 32-bit AVR microcontrollers. AVR One! supports the programming interfaces:
SPI JTAG PDI aWire
It also supports debugging of AVR microcontrollers using the following interfaces:
debugWire JTAG Nexus für 32-Bit AVR Mikrocontroller PDI aWire
AVR ONE! supports the complete development cycle and is the fastest debugging tool offered from Atmel. It is powered by an external 12 V / 15 W power supply, which is included in the delivery. The development tool is supported by the AVR Studio software. AVR Studio is available free of charge from Atmel`s web site. The online-help contains a user`s guide and a list of supported devices.