The USB AVRJTAG + AVRISP is a dual-purpose device. It allows the in-circuit debugging and programming of Atmel AVR devices that support the AVR JTAG interface, and also acts as an STK500-compatible in-system programmer.

Two 10-pin IDC box connectors are on the board. If your target supports it, you can use the AVR JTAG connector (top view on target board). For targets that only support the AVR ISP interface, you can use the AVR In-System Programming connector (top view on target board). A jumper setting allows you to select which interface to use. A 10-pin programming cable is included (7 inches).

The firmware is compatible with AVR Studio 4.12, Service Pack 4 and above.

AVRJTAG+ISP firmware update procedure

The AVRJTAG+ISP unit is powered from the target board and accepts 3.3V to 5V supply voltage.

There are two different versions of the AVRJTAG+ISP, you need to determine which version you have to download the correct, matching USB driver. Older versions have a Silicon Labs CP210X USB to UART Bridge. Newer versions, shipped after 03/27/2007, use the FTDI FT232RL chip. Inspect your unit to see which USB bridge chip it has.

Download USB drivers for the Silicon Labs CP210X chip.
Download USB drivers for the FTDI FT232RL chip.

AVR USB JTAG Debugger & ISP Programmer Supported Devices

JTAG mode

• ATmega16, ATmega16L, ATmega162, ATmega162L, ATmega169, ATmega169L
• ATmega32, ATmega32L, ATmega323, ATmega323L
• ATmega64, ATmega64L
• ATmega128, ATmega128L
• AT90CAN128, AT90CAN128L

ISP mode

• ATtiny12, ATtiny13, ATtiny15, ATtiny22, ATtiny24, ATtiny26, ATtiny28, ATtiny44, ATtiny45, ATtiny2313
• AT90S1200, AT90S2313, AT90S2323, AT90S2333, AT90S2343, AT90S4414, AT90S4433, AT90S4434, AT90S8515, AT90S8535
• ATmega8, ATmega16, ATmega32, ATmega48, ATmega64, ATmega88, ATmega103, ATmega128, ATmega161, ATmega162, ATmega163, ATmega165, ATmega168, ATmega169, ATmega256, ATmega323, ATmega325, ATmega329, ATmega644, ATmega645, ATmega649, ATmega2560, ATmega2561, ATmega3250, ATmega3290, ATmega6450, ATmega6490, ATmega8515, ATmega8535
• AT90CAN128, AT90PWM2, AT90PWM3
• AT86RF401
• 89S51

Note: to work with this Atmel AVR USB JTAG In-Circuit Debugger & STK500-Compatible In-System Programmer you will need a target board (not included) with an Atmel AVR microcontroller and a JTAG or ISP interface connector, such as
Atmel ATmega128 Board, RS232, 16x2 LCD, Relay & Buzzer
Atmel ATmega16-16AI Board, JTAG connector
Atmel ATmega128-16AI Header Board, ICSP and JTAG

Ships from: USA
Leadtime: In stock