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AVR1921: Reprogramming the Xplain 

AT90USB1287 and ATxmega128A1 firmware 

Features 

• 

ATxmega128A1 microcontroller 

• 

External Memory 

8MB SDRAM 

8MB Serial Data Flash 

• 

AT90USB1287 

Communication gateway 

Programmer for Atmel

®

 AVR

®

 XMEGA

TM

  

Analog Input (to ADC) 

Temperature sensor 

Potentiometer  

• 

Analog Output (from DAC) 

Mono speaker via audio amplifier 

• 

Digital IO 

UART communication through USB gateway 

8 micro switch buttons 

8 LEDs 

8 spare analog pins 

8 spare digital pins 

1 Introduction 

This application note describes how to reprogram the AT90USB1287 and the 
ATxmega128A1 on the Xplain board with the original firmware, or your own 
application code. 

Figure 1-1.

 Xplain evaluation kit. 

 

 

 

 

8-bit  

 

Microcontrollers 

 

Application Note 
 
 
 

Rev. 8301A-AVR-04/10 

Summary of Contents for AVR1921

Page 1: ...Potentiometer Analog Output from DAC Mono speaker via audio amplifier Digital IO UART communication through USB gateway 8 micro switch buttons 8 LEDs 8 spare analog pins 8 spare digital pins 1 Introd...

Page 2: ...ll the Xplain USB driver the first time it is connected Please find the install file in the software USB driver folder of the zip file distributed with this application note 0http www atmel com avr Se...

Page 3: ...AVR1921 8301A AVR 04 10 Figure 2 2a Xplain revision Figure 2 2b Xplain revision...

Page 4: ...refer to the 52 1 6Powering the Xplain board section 2 Connect the JTAGICE mkII to the JTAG PDI XMEGA pin header J100 as shown in figure 2 1 3 Open the programming dialog in AVR Studio selecting Tools...

Page 5: ...2 5 Reprogramming the AT90USB1287 application firmware using FLIP This guide requires that both AVR Studio and FLIP are installed It is a walkthrough which describes how to download the USB applicatio...

Page 6: ...ick next Figure 2 4 Driver path selection 7 Click finish 8 Open AVR Studio and select Tools Flip X X X 9 Select Device Select AT90USB1287 and click OK 10 Select Settings Communication USB and click Op...

Page 7: ...ice is now programmed with the serial gateway application firmware The same procedure can be used to download your own application code Remove the jumper at the JTAG USB pin header J200 and cycle powe...

Page 8: ...RY WARRANTY RELATING TO ITS PRODUCTS INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY...

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