Order No.: chip45boot2
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Price:  23.80 EUR

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AVR ATmega Xmega Bootloader Source Code with PC GUI Tool.

AVR ATmega Xmega Bootloader Source Code with PC GUI Tool

chip45boot2 Bootloader - AVR ATmega Xmega Bootloader Source Code with PC GUI Tool.

chip45boot2 is now available under open source license at github!


chip45boot2 is a professional bootloader for Atmel AVR ATmega and Xmega micro controllers with Intel hex file support and automatic baudrate adjustment. See infosheet for details. It is available as free precompiled hexfiles and commercial source code.


chip45boot2 provides the following features:

  • direct input of Intel Hex files
  • automatic baud rate adjustment
  • XON/XOFF protocol
  • Flash and EEPROM programming
  • byte-wise writing and reading of SRAM memory
  • byte-wise writing and reading of EEPROM memory
  • 2k bootblock size
  • graphical windows user interface chip45boot2 GUI for convenient programming from PC!

The bootloader automatically adjusts at start to the hosts baudrate, so that it is not necessary to recompile the bootloader to a particular MCU clock. There exist precompiled hexfiles for different controller types and probably different UARTs, which work independently from MCU clock.

Further Information


The precompiled hexfiles may be used for either commercial or non-commercial projects and products without limitations.

In case you want to extend the bootloader by own functions or make changes to it, you can buy the source code (as AVR studio project for WinAVR) here.

PC Software

The chip45boot2 GUI is a comfortable PC/Windows application with a graphical user interface for the bootloader, which simplifies flash and eeprom programming over a COM port. Similar to the precompiled bootloader hexfiles, the chip45boot2 GUI can be downloaded for free.

If you want to use the PC software for a customer project, we can build a customized version for you (your company logo and name instead of chip45). Please contact us in case this is of interest for you.

Scope of Delivery

The most recent version available of the chip45boot2 source code will be send as ZIP file by email. No shipping charges are incurred.


  • Infosheet
  • Precompiled Hexfiles
  • Atmel Studio 7 (incl. Toolchain + Software Framework)
  • CodeVisionAVR C Compiler
  • Software


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