How much IS 10 billion or 1 Trillion writes?
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Posts: 46,084
http://www.ramtron.com/
This is just weird. I found this on a site that was comparing it to
core memory for old computers. Honestly it's very similar. Basically,
every bit is moved around in a magnetic field, so it gives you the speed
of sram, yet its non volatile.
The disadvantage is that you use up some of its life on both reading and
writing.
However it has a HIGH endurance. Most of them have a 1-10 billion
read/write. Some of the newer ones have a Trillion, and they are
working on now one that is 1e16 (1 with 16 zeros, don't know what you
call that:P).
Most of them are primarily SCA or 2-wire devices; however, they sell
parallel versions as well.
My question is, IS how much is 10 billion writes? If I put this chip
in, let's say a commodore 64, or a system running an operating system of
some kind that does many read/writes a sec, how can I calculate the
estimated lifetime?
It is neat though. They have a parallel version with a built in RTC,
watchdog/supervisor. Not to mention a lot of their memories have built
in RTCs. Thought it would be an interesting replacement for the EEPROMS
we use in BasicStamps:P
This is just weird. I found this on a site that was comparing it to
core memory for old computers. Honestly it's very similar. Basically,
every bit is moved around in a magnetic field, so it gives you the speed
of sram, yet its non volatile.
The disadvantage is that you use up some of its life on both reading and
writing.
However it has a HIGH endurance. Most of them have a 1-10 billion
read/write. Some of the newer ones have a Trillion, and they are
working on now one that is 1e16 (1 with 16 zeros, don't know what you
call that:P).
Most of them are primarily SCA or 2-wire devices; however, they sell
parallel versions as well.
My question is, IS how much is 10 billion writes? If I put this chip
in, let's say a commodore 64, or a system running an operating system of
some kind that does many read/writes a sec, how can I calculate the
estimated lifetime?
It is neat though. They have a parallel version with a built in RTC,
watchdog/supervisor. Not to mention a lot of their memories have built
in RTCs. Thought it would be an interesting replacement for the EEPROMS
we use in BasicStamps:P
Comments
rudimentary calculations):
1 Billion (1,000,000,000) rewrites:
100 times a second: 0.32 years
10 times a second: 3.17 years
Once a second: 31.71 years
10 Billion (10,000,000,000) rewrites:
100 times a second: 3.17 years
10 times a second: 31.71 years
Once a second: 317.10 years
1 Trillion (1,000,000,000,000) rewrites:
100 times a second: 317.19 years
10 times a second: 3,171.97 years
Once a second: 31,709.79 years
Please feel free to correct me if I didn't carry a 1 or something to
that effect :-p
-special [noparse][[/noparse]k]
--- In basicstamps@y..., <warlockd@l...> wrote:
> http://www.ramtron.com/
>
> This is just weird. I found this on a site that was comparing it to
> core memory for old computers. Honestly it's very similar.
Basically,
> every bit is moved around in a magnetic field, so it gives you the
speed
> of sram, yet its non volatile.
>
> The disadvantage is that you use up some of its life on both
reading and
> writing.
>
> However it has a HIGH endurance. Most of them have a 1-10 billion
> read/write. Some of the newer ones have a Trillion, and they are
> working on now one that is 1e16 (1 with 16 zeros, don't know what
you
> call that:P).
>
> Most of them are primarily SCA or 2-wire devices; however, they sell
> parallel versions as well.
>
> My question is, IS how much is 10 billion writes? If I put this
chip
> in, let's say a commodore 64, or a system running an operating
system of
> some kind that does many read/writes a sec, how can I calculate the
> estimated lifetime?
>
> It is neat though. They have a parallel version with a built in
RTC,
> watchdog/supervisor. Not to mention a lot of their memories have
built
> in RTCs. Thought it would be an interesting replacement for the
EEPROMS
> we use in BasicStamps:P