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Topic: Max capacity external memory RAM (Read 2 times) previous topic - next topic

legoritmo

Hi everyone! I am working in a project about realiable wireless communication, and I need a external memory for store data when the Arduino is out of range. So, my question is very simple. Does anybody know which is the bigger memory RAM that i can add to the arduino? Because the biggest that i found it was 23K256 (32KB), and this is too small. Thanks!

RuggedCircuits

How much memory do you need and how fast do you need to access it?

We have a MegaRAM shield for the Arduino Mega/Mega2560 that adds 128kilobytes of fast RAM. You can get more storage if you move to FLASH memory, or use a shield that has an SD card interface in which case megabytes or even gigabytes of RAM become accessible, but it is slower to write to these media.

Tell us more about your desired memory size and speed of access.

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pito

#2
Oct 03, 2011, 10:43 pm Last Edit: Oct 03, 2011, 10:44 pm by pito Reason: 1
..You may try ramtron's FRAM FM25H20 (256kBytes, SPI 40MHz, 8pin smd). It works as a ram, and you get a bonus as it is nonvolatile.. Pito.

SH2011

There is a device IP12B512C serial SRAM with 64Kbyte available.
See www.ipsilog.com

Grumpy_Mike

Quote
Does anybody know which is the bigger memory RAM that i can add to the arduino?

Yes in theory it is infinite, now how big do you need it to be?

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