ATUC256L4U USB debugging and programming

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Good day everyone,

 

I am considering making a board where I can be able to program it via USB.  The problem is, I couldn't find any MCU that I can program directly with the USB port. One option which is not a very good one is to make the ISP interface on my board and program the MCU, but considering that for example ATUC256L4U has built in USB interface and in the datasheet it specifies that programming and debugging is only possible with aWire and JTAG.

 

After reading the datasheet of for example ATSAM3x8EA which is used in Arduino Due, they have used USB interface for programming but I couldn't find it in the datasheet.

 

My question is, is it possible to find a way to program the given MCU(ATUC256L4U) with USB and how is this possible with AVR Studio. Thanks in advanced.

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Love2Learn

Last Edited: Tue. Sep 16, 2014 - 03:16 PM
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I don't know of any USB-enabled AVRs that don't come pre-programmed with some kind of boot-loader.

The UC3s have a "USB DFU" boot-loader you can use from Atmel BatchISP software. I'm not sure what they did for the ATUCxxL series, as I couldn't find anything through some quick searches.

 

For debugging and programming directly from Atmel studio, I suspect you still need a JTAG dongle.