Re: Memory Cards
Randall Riecks (riecksra@sgate.com)
Sun, 23 Oct 94 16:12 PDT
> Static RAM requires a constant "trickle" charge (voltage) to maintain
> state (hold its contents). Flash RAM uses a "pulse" of voltage (light?)
> to set state but no power is required to maintain state once set.
> Therefore static RAM is a greater drain on battery energy, but flash
> RAM is more expensive.
>
I think this is why SRAM cards usually have a small battery in them... I
have heard this, but don't have mine yet, so I am not really speaking
from experience here. So, yes, SRAM requires more power, but the
"trickle" used to keep them alive is done by the cell in the card and so
doesn't have to be done by the Zoomer or other "host" system.
Flash memory power has to come from the host machine, but as you
mentioned, only during writes (I think).
-Randy