[Elecraft] Device data retention times

[Lynn W. Taylor, WB6UUT]

Last time I saw numbers on this, it was for the configuration memory on 
a TAPR TNC-1.

The documentation said 100,000 writes, but it only counted if you 
actually flipped a bit -- and it was per-bit, not per word or across the 
entire device.

That means re-flashing with the same firmware shouldn't count at all, 
since you're writing the same bits into the same words in storage.

I'm sure current parts are better.

73 -- Lynn

On 11/9/2016 12:07 PM, len at ka7ftp.com wrote:
> Hi All,
>
>   
>
>              I'm constantly doing projects with microcontrollers and
> programmable logic devices.  I've been doing this long enough that I've got
> devices that have "lost their memory."  Things that I designed and built
> decades ago no longer function.  Over time flash will lose its mind, I guess
> just like we do.
>
>   
>
> At some point in time that will happen to our lovely little radios.  From an
> operator stand point we can re-flash the firmware as long as the boot code
> is functional.  Does Elecraft have a provision in the radios that will allow
> an update of the bootloader to keep it fresh, so to speak?  That is without
> sending it back to the factory?
>
>   
>
> I know a lot of people don't keep stuff forever, but I pretty much do.   In
> old radios we replace caps, and a few other parts that age.  With
> programmable chips you need and ISP, unless there is another provision.
>
>   
>
> 73
>
>   
>
> Len
>
>   
>
>              
>
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