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PDF X3DIL Data sheet ( Hoja de datos )

Número de pieza X3DIL
Descripción AVR USB Module
Fabricantes Reusch 
Logotipo Reusch Logotipo



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No Preview Available ! X3DIL Hoja de datos, Descripción, Manual

X3DIL
AVR USB Module
Rev. 1.0
Documentation Rev. 1
Reusch Elektronik
© 2012 Reusch Elektronik, Dipl.-Ing. (FH) Rainer Reusch
www.reusch-elektronik.de
http://products.reworld.eu/x3dil.htm
File: X3DIL_Manual
Created: 2012-05-10
Changed:
Free Datasheet http://www.Datasheet4U.com

1 page




X3DIL pdf
Reusch Elektronik
2. Technical Information
2.1 Schematic
X3DIL
Notes:
By factory default R2 and R4 are assembled, R1 and R4 are not. That means, PD6 (D-) and
PD7 (D+) are not available at DIL pins. Populating this two missing resistors may cause
non reliable USB operation! This should only be done, if USB is not used.
The pins 25 and 26 are carrying the crystal signal by factory default (if a crystal is used).
The usage of the module in experimental environments may cause improper crystal
operation. If this occurs, disconnect the pins from the crystal by opening J1 and J2 (use a
cutter).
Pin 64 is the 5V output of the USB supply voltage. The controller is designed for supply
voltages up to 3.6V. That means: never connect pin 64 to any other pin of the module,
direct or indirect! A connection will cause a damage!
Rev. 1.0
Page 3
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X3DIL arduino
Reusch Elektronik
X3DIL
3.3 Reflashing the bootloader
After a “chip erase” (e.g. when the controller was programmed via PDI) it is necessary, to
reflash the DFU bootloader, if further programming should be possible by USB and
“FLIP”.
At first, download the DFU bootloader files from the Atmel homepage. Try the following
link
http://www.atmel.com/Images/AVR1916.zip
or search for “ATXMEGA256A3U DFU files” on the Atmel homepage (www.atmel.com).
Unzip the file and look for the file “atxmega256a3u_bootloader_usb_dfu_103.hex” (newer
files have a higher version number) in the subdirectory
“XMEGA_bootloaders_v103\binaries\atxmega256a3u”.
Launch AVR Studio (V5.1 or higher) and open the “AVR programming” dialogue. Program
the hex file into the flash memory. In a second step, it might be necessary, to modify the
fuses. The following screenshot shows the factory default fuse settings, except the fuse
BOOTRST. This fuse has to be set to “BOOTLDR”, otherwise the bootloader never
launches!
After programming the bootloader, it might be necessary, to reset the controller.
Note: The DFU bootloader is running with the internal 48MHz RC oscillator. For this
reason, no external crystal or clock generator is necessary, while the bootloader is
launched.
Rev. 1.0
Page 9
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