Has anyone been able to successfully extract reram devices in magic for LVS purposes? I'm on magic 8.3.315 and magic treats the device as a via so TE and BE are shorted. Maybe this is a pdk version issue?

I tried to do a quick fix by editing the reram xschem symbol and the netgen lvs tcl script to get lvs clean design. Turns out the

sky130B_setup.tcl

file at

sky130B/libs.tech/netgen/

does not have a section for reram devices and so lvs fails to recognise the reram. I copied some lines from a generic resistor section, and basically have the reram section say that the two terminals of reram are permutable, and to ignore the

area_ox

property. I also edited the reram xschem symbol,

reram.sym

at

sky130B/libs.tech/xschem/sky130_fd_pr/

, mainly changing the format (line 20) and device_model (line 25). I added a spice prefix and changed model name property to

sky130_fd_pr__@model

in the format. This helps in LVS as both the extracted netlists have the same model name and a prefix included. Please note that I did not simulate the rerams in xyce, so not sure how changing the device model property in xschem symbol affects that. I attached the files I used here. This is likely not a formal fix. You may also have to update magic to the latest version as well.

Thanks so much for the detailed response. I'll try this out!

Please be aware that older versions of

$PDK_ROOT/sky130B/libs.tech/magic/sky130B.tech

may not stream out the ReRAM layer correctly. Check your final GDS to be sure the ReRAM layer is still there.

thanks, I am updating now I think my sky130B version was just too old