The theme behind my idea is to avoid any level of on-die integration. I might be creeping into the territory of art, in that I want to create something that gives an idea of the amount of 'actual' electronics that go into a typical digital device. The nonvolatile 'state saver' (Ramtron FM1105) has quite a bit of on-die magic wrapped around the FRAM cells, so it violates my rule. The 1702A definitely doesn't fit. Isaac, any idea who it is that created the 'programmable' MOSFET? An initial googling isn't coming up with many useful results. - Keelan On Tue, Mar 27, 2012 at 1:25 PM, Isaac Marino Bavaresco wrote: > Em 27/3/2012 17:07, Barry Gershenfeld escreveu: >> So, a 1702A won't cut it? =A0You want the actual transistors to make one >> from? =A0I don't recall there ever being such a thing. =A0Seems the firs= t we >> ever head of floating gate "FAMOS" was right there in the EPROM. =A0The >> 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. = =A0But >> 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 > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .