Hi, Do you know how I can get the schematic of i/o pads? Thanks

@sepide asgari As far as I know, the schematics of the i/o pads have not been released. You can find the corresponding spice files in

$PDK_ROOT/$PDK/libs.ref/sky130_fd_io/spice/sky130_fd_io.spice

and

sky130_ef_io.spice

. I think it would be nice if someone in the community would reverse engineer the netlists to create a xschem schematic.

Thank you for your response. Do you know for what purpose those metal 5 have been used in the attached picture?

Are you’re referring to the power rails? They’re connected all around the chip, but aren’t used on every io cell. For example, the analog pads only connect to a few of the power rails. Here’s a screenshot with the net names visible.

Hi, Thank you for your response. Do you know why in my Klyout, I cannot see the net names in the layer box?

File

->`Load Layer Properties` and then choose

$PDK_ROOT/$PDK/libs.tech/klayout/tech/sky130A.lyp

Thank you. It works.