Re: From SRAM to FRAM......advice needed
- From: Rich Grise <rich@xxxxxxxxxxx>
- Date: Mon, 27 Nov 2006 20:43:03 GMT
On Sun, 26 Nov 2006 10:54:25 +0000, Roger Hamlett wrote:
"Robb" <weiner@xxxxxxxxxx> wrote in message
They are not the only 'manufacturer' of the technology, but are basically
For a new design I'm thinking of using FRAM instead of the SRAM for data
storage in a redesign of one of in our products.
The FRAM looks good in terms of its non-volatility (10 yrs) and is
available with serial or parallel interfaces, speed is acceptable - we
don't need "fast".
Our products are battery powered and use the main battery & a smaller Li
backup battery to retain data in SRAM memory.
We'd probably use multiple ICs to achieve 1Mx8bit storage. Our volume is
around 300 units per annum.
It worries me a bit that we'd be depending on a single source supply -
Ramtron seems to be the only manufacurer, is there a reason why?
Has anyone any experiences / gotchas that I'm not considering?
the only people selling the chips. They hold the patents. Toshiba
manufacture part using this technology under license, but seem to only
sell them in their own equipment. SGS-Thompson, were also manfacturing
some of the chips (I have had Ramtron parts, with SGS logos in the
plastic), and TI, were also making some of the parts. I suspect the
'single source' behaviour, is down to how their licensing is done. A such
then, if the company folded, there are other manufacturers who are
making/could make the parts, and given the widespread use of this
technology now, an alternative would appear as soon as the legal ownership
of the patent cold be resolved.
A quick google on "what is a FRAM" without quotes turned up Fujitsu:
http://www.fujitsu.com/global/services/microelectronics/quality/fram/
And more links - that's the only one I've clicked.
Cheers!
Rich
.
- References:
- From SRAM to FRAM......advice needed
- From: Robb
- Re: From SRAM to FRAM......advice needed
- From: Roger Hamlett
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