Using SDCard to extend flash memory?

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Hi All,

 

I guess this is a question that gets raised many time so far. However, my search in the internet did not give an clear answer.

Currently the 2MByte flash devices of the E70 are not on stock at all dealers that I know. The lead time is 8 weeks minimum and personally I do not trust such announcements. The 1MByte version is available. The board I'm using has a SDCard slot that is connected by the HSMCI interface to store recorded data using FatFS. So my question is now rather simple. Is there a way to use parts of the SDCard to extend the flash memory. I do not concern so much about execution speed because I think I will find a solution for this. I'm more concerned if there is a way at all to use the SDCard to extend the flash memory.

 

Best Regards

Markus

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Markus Krug wrote:
Is there a way to use parts of the SDCard to extend the flash memory.
Not that I'm aware of, whereas, code can execute from QSPI flash.

http://www.atmel.com/devices/ATSAME70J20.aspx

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Accelerate execution from on-chip Flash, NVM connected to Quad SPI and EBI with 16KB of data and 16KB of instruction cache memory.

...

SAM E70 Complete
(file size: 8 MB, 1871 pages, revision D, updated: 01/2016)

http://www.atmel.com/Images/Atmel-11296-32-bit-Cortex-M7-Microcontroller-SAM-E70Q-SAM-E70N-SAM-E70J_Datasheet.pdf

(page 2)

Quad I/O Serial Peripheral Interface (QSPI) interfacing up to 256 MB Flash and with eXecute-In-Place and onthe-fly scrambling


http://www.microchip.com/design-centers/memory/serial-parallel-flash 

 

"Dare to be naïve." - Buckminster Fuller