Both of the versions of the nwell resistor ("v1" and "v2") fail NCC.
It doesn't recognize the export "R" on the layout.So far, I haven't been able to fix it. Sasha, SDSU On Oct 13, 4:00 pm, Jake Baker <[email protected]> wrote: > Hi Steve, > This email (see below) was posted to the CMOSedu google group but it relates > to implementing n-well resistors using Electric. > When the ability to use the n-well or p-well as an arc (so the MOSFET body > could be tied to a place other than vdd or gnd) was added to Electric some > time back the method that many of use were using to specify resistors > stopped working (see Electric_video_7 > at:http://cmosedu.com/videos/electric/electric_videos.htmfor example). > > I've attached several attempts to make the n-well resistor both NCC and ERC > (well check) correctly. I couldn't figure out the difference between the > various types of resistors but "v2" of the ARC n-well layout uses an n-well > schematic symbol. > > If we could get this issue, and a similar one for capacitors if the contact > is placed over both poly1/poly2, resolved before the next release of > Electric that would be great. If I can help in any way please let me know. > > Also, to everyone using Electric, I may be updating the video tutorials at > the link seen above. Would it be better if there were written tutorials > instead (or in addition to new videos???) Note that sometimes too much > information is worse than too little ;-). I'll attempt to simplify the > tutorials no matter what. > > Thanks, Jake. > > > I'm new in the group and I'm very interested in cmos design. > > I'm trying to layout a nwell resistor, so I watched the video from > > your homepage in order to acomplish that. (Electric_10_2 (2:13) - How > > to layout a 4-to-1 divider using four 10k n-well unit cells).The thing > > is that I'm getting 12 Well Check errors, and I don't understand > > what's going on, cause I did just as you ( Dr. Baker) did. > > I want to simulate this layout, but I cant make it happen cause I'm > > still getting this errors. > > > When I do the Well Check I got 4 of this errors ( Short circuit > > between well contacts ) > > and 8 of this ( N-Well contact not connected to power) > > --http://CMOSedu.com/jbaker/jbaker.htm > > nwell_resistors.jelib > 4KViewDownload -- You received this message because you are subscribed to the Google Groups "Electric VLSI Editor" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/electricvlsi?hl=.
