Re: Flash retention in uC at higher temps, experience?

In article <pCV4k.14650$HS3.713709@[EMAIL PROTECTED]
>, TheM says...
> "Frank Buss" <fb@[EMAIL PROTECTED]
> wrote in message
news:i5s7vw2ybqby.17ppigai6cf64.dlg@[EMAIL PROTECTED]
> > TheM wrote:
> >
> >> I thought it was limited number of writes. But for certain packages
(serial) it practically means
> >> unlimited as the protocol limits number of reads sufficiently.
> >
> > The Freescale chip has fast parallel access (35ns), like a slow SDRAM,
and
> > this page says "Unlimited Write and Read Cycles":
> >
> >
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=4MBIT&nodeId=015424
> 
> Wow, looks like they are making progress. The last unit I used was 64K
serial (I2C) from Ramtron
> and it was limited to 10^12 read/write cycles which came out as years at
max I2C bus speed.

First the Ramtron devices are FeRam not MRAM.

Second Ramtron has also been claiming unlimited writes for some time 
now.  IIRC the limit was a function of axygen contamination.  Apparently 
they solved that problem.

Robert
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