I have a 1985 Intel handbook titled "Components Quality/Reliability=20
Handbook".

It has charts and tables about things like feature size.  Some of the=20
things it says:

Feature size in 1970 - 6-12um
Feature size in 1985 - .8-1.2um
This is from a graph, and shows a straight line through the years

A table refers to "Channel length", and gives the following:
1975 - 6um, 2104
1977 - 3.5um, 2114A
1979 - 2um, 2114B
1981 - 1.8um, 2164A
1983 - 1.2um, 51C256

It also says "MOS RAMs have undergone a thousand-fold increase in=20
density in the past 15 years, from the 256-bit PMOS 1101 introduced by=20
Intel in 1969 to today's 256K NMOS and CMOS products.  Many of the=20
earlier gains resulted from circuit innovation as the industry evolved=20
from the three-transistor cell to the one-transistor cell of modern=20
dynamic RAMs."

Kerry


alan.b.pearce@stfc.ac.uk wrote:
> I am looking for information on ancient RAM chips, specifically 1101, 110=
3, 2101 and 2102 types, but later chips also required. Datasheets would be =
helpful, but I am really after information on the geometries used.=20
>
> What I do know about them ...
>
> 1101 256 bit x1 static RAM, P-MOS, geometry size unknown, introduced by i=
ntel in mid to late 1960s.
>
> 1103 1k bit x1 dynamic RAM, P-MOS, geometry size unknown, introduced by i=
ntel about a year after 1101.
>
> 2101 256 bit x4 static RAM, N-MOS, geometry size unknown, introduced by i=
ntel in late 1960s/early 70s.
>
> 2102 1k bit x1 static RAM, N-MOS, geometry size unknown, introduced by in=
tel in 1970s.
>
> At this stage I have no information on 4k x1 dynamic RAM chips, apart for=
m they came in two flavours, 16 pin with multiplexed address (like later 16=
k ones) and 22 pin without multiplexed address.
>
> I have a TI databook (copyright 1985) that has datasheets for 4116 16k bi=
t x1 dynamic RAM chips, but back then the datasheets did not seem to contai=
n any info on device geometry sizing.
>
> Also after geometry details for 1702 and later EPROMs and corresponding R=
OMS.
>
> Gleaning info from HP Journals for the time suggests that the devices pro=
bably used geometries around 7 micron, but would like to ascertain actual g=
eometry sizes used.
>
> Ideally I need citable references for any information, but I will take an=
ything that anybody knows, or has heard through the grapevine. Information =
wanted for use in an honours degree dissertation.
>
> TIA
>
> Alan
>  =20



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