I avoided FLASH at the chip level because it seems I'd have do manually=20
create some wear leveling mechanism, and would like to avoid that for a=20
low-volume project.  Also not sure yet if I'd have to write in pages, or=20
if individual bytes are writeable.  With an SD card, the mechanism is in=20
place already to handle these.  Total write cycles of 100K (or even 1/10=20
of that) is fine.

I need to store about 1K bytes per second.

Cheers,
-Neil



On 6/17/2016 1:58 PM, Sean Breheny wrote:
> You say RAM and then you mention microSD. Do you really need RAM or is
> FLASH OK? (This is mainly a tradeoff between speed and write endurance on
> the one hand and cost and simplicity on the other)
>
> If you can deal with slow-ish write speed and don't need to write over th=
e
> same data many times, then I would go for serial flash chips.
>
> On Fri, Jun 17, 2016 at 1:16 PM, Neil <picdude3@narwani.org> wrote:
>
>> Hi all,
>>
>> I need to add 4GB to 8GB of ram to a project to temporarily store data
>> logs, and balking at the price of memory from Mouser/Digikey etc.  I
>> could use microSD, and removeable would be a good feature, but this will
>> need to be rugged and I'm not it would be reliable. On the other hand, I
>> can get a 4GB stick of PC memory for under $5, so perhaps I can find a
>> way to solder that directly on a PCB.
>>
>> Other options?... is there a better source for RAM chips?  Or a better
>> type of memory for this?
>>
>> Cheers,
>> -Neil.
>>
>> --
>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>

--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.