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Topic: Arduino Zero using a DP xQFP 50/80 prototyping board (Read 2678 times) previous topic - next topic

Arduino Zero using a DP xQFP 50/80 prototyping board

I need more processing power than an AVR for an upcoming project so I ordered an Arduino Zero to take a look at the SAMD ARM processors.  Unfortunately my son coveted the box it came in, once the two were separated the Zero was never seen again.  I had separately ordered the processor part, I realised I could build a Zero using a spare DP xQFP 50/80 prototyping board.

The schematic is fairly simple, doesn't even need an external crystal (https://www.arduino.cc/en/uploads/Main/ ... ematic.pdf).  I was extra pleased when I realised the 1.27mm header fit the SOIC pattern on the board.

The bootloader is programmed using an Atmel ICE pod and openocd.  This is super easy using the Arduino GUI (instructions at https://gist.github.com/NT7S/8302aa33279dbe3d4873).  There is a PCB only version of the ICE available for $US35 (http://www.mouser.com/ProductDetail/Atm ... L-ICE-PCBA).




Re: Arduino Zero using a DP xQFP 50/80 prototyping board

Reply #1
I should add that you don't need an external crystal to use the bootloader or run basic programs but to use the Arduino libraries like SerialUSB you'll need the 32.768 kHz external crystal.  The PLL driven from this signal seems to run many of the peripherals.