[Coco] Off Topic: FM16W08-SH DIP part?

[Ty Sopko]

FRAM fills a niche -- application-wise, somewhere between EE and volatile RAM, but much more durable than either.  It is generally resilient to environment-induced soft errors and maintains data retention at high temperatures.

The devices have access times that are much faster than EE, on the order of a median D/SRAM device.  Capacity is relatively low, but the erase/write endurance is a few orders of magnitude above the best EE (making it interchangeable with volatile RAM in that respect).

TI has a decent whitepaper if you want a deep dive --
http://www.ti.com/lit/ml/slat151/slat151.pdf

Kind Regards,

Ty


-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Andrew
Sent: Friday, May 24, 2019 9:15 PM
To: coco at maltedmedia.com
Subject: Re: [Coco] Off Topic: FM16W08-SH DIP part?

On 5/24/19 4:27 PM, coco-request at maltedmedia.com wrote:

> Re: [Coco] Off Topic: FM16W08-SH DIP part?

I know you don't know the answer to this, Allen - but if it were for an 
Arduino project, why would you choose something like this that is fairly 
expensive and somewhat obscure, vs common and cheap flash memory?

The only answer I could think of would be you wanted something that 
could retain the data without needing a battery, and you needed the 
speed of the device as well (I think flash is slower?). Plus - you 
needed something small (low RAM) - and money wasn't an issue.

Did you have a project like that in mind? Something you needed a small 
but fast amount of non-volatile RAM that could keep its contents without 
power? Maybe for a buffer? Perhaps for a logic analyzer or some similar 
tool? 8K in a ring buffer for signal capture would be kinda nice. Maybe 
the non-volatility was a feature; you didn't need it, but it eliminated 
the need to design and build (or the extra pin(s) from the Arduino) a 
refresh circuit?

Just throwing some stuff out there trying to jog the nog!

If that doesn't work, make a note of it, put it wherever, and maybe 
it'll come to you when you least expect it. Heck, for all you know it 
was something that fell out of a box as a "bonus" (you know how you 
sometimes get an extra french fry with your order of onion rings? 
something like that!).

-- 
Andrew L. Ayers
Glendale, Arizona
https://github.com/andrew-ayers

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