Em 27/3/2012 17:07, Barry Gershenfeld escreveu:
> So, a 1702A won't cut it?  You want the actual transistors to make one
> from?  I don't recall there ever being such a thing.  Seems the first we
> ever head of floating gate "FAMOS" was right there in the EPROM.  The
> closest I can think of is that someone makes a 1-bit ferro-ram device,
> intended to be used to make nonvolatile latching power switches. A 1 bit
> memory device kind of boggles the mind, at least in the reverse sense.  B=
ut
> it is still in an IC package.

There is at least one manufacturer that makes "programable" Vth MOSFETs.
These devices have some sort of floating gate inside, together with the
normal gate. The devices can be programmed by a special programmer so
the designer gets the Vth he needs.

Perhaps these device can be programmed with a negative Vth, that is, it
is always on even without voltage at the gate.


Isaac

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