Would it help if you had some physical ICs (in ceramic/metal side-braised pacakge) and could measure the feature size yourself with a microscope? If so, I think I have some of these ICs in my junkbox. Sean On Wed, Feb 2, 2011 at 9:10 AM, 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. > > 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 > -- > Scanned by iCritical. > > -- > 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 .