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Topic: Arduino Due Mini/Nano (Read 14 times) previous topic - next topic


Is that ROM in the 16U2, or in the ATSAM? There is no external ROM part on the board.
I haven't looked at the datasheet - maybe its access via JTAG or SPI?
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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Oct 24, 2012, 02:56 am Last Edit: Oct 24, 2012, 02:59 am by pYro_65 Reason: 1
Its in the ATSAM, the data sheet says:

16 Kbytes ROM with embedded bootloader routines (UART, USB) and IAP routines


The SAM-BA Boot is in ROM and is mapped in Flash at address 0x0 when GPNVM bit 1 is set
to 0.

So when the bit is set it must be over writable just like a normal ISP/similar


The SAM3A4C and SAM3X4C are the smaller (100pin/256k) cousins of the 144 pin SAM3X8E on the Due.
Being in the same family would make quick and dirty ...



If the vanilla SAM3XE chip like you can order it from Farnell works with own-built boards, I might develop a smaller version of the Due. I developed a variant (actually: a shield) for the 8bit Arduino for use in industrial environments (think ruggedcircuits but better :p ), but boards with the dimensions of the Due or the Mega don't fit in our DIN-rail enclosures.

Perhaps it is possible to minimize the dimensions to something in the range of a Uno by omitting some pinheaders. Then you would have the same number of input/outputs of a regular Arduino, but with the processing power of the Due.


The Teensy 3.0 is now entering general release if you wanted an ARM board in a smaller package than the DUE.  The Teensy is not the DUE, so be sure to understand what it offers and what it doesn't.  Teensy 3.0 uses a modified Arduino 1.0.1 IDE.

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