#464 Feature request: Pull-up / pull-down resistors for I/O cells Issue created by mole99 It would be great to have PU and PD functionality for the I/O cells with inputs. This includes the input-only IO cell (

sg13g2_IOPadIn

), but also the in-out IO cells (

sg13g2_IOPadInOut*

). The motivation would be to save on external components: If you know that there will be e.g. a tactile push-button connected to an input, you can hardwire PU/PD. Another use case would be to make PU/PD user-programmable in uC applications or even in FPGAs. Yes, I would love to have PU/PD functionality in Greyhound :) The feature could be implemented using just the two

pu

and

pd

inputs that enable the respective resistors. Or there could be additional logic to ensure PU and PD are never active at the same time or together with

c2p_en

in the

sg13g2_IOPadInOut*

cell. Either implementation would be fine for me. IHP-GmbH/IHP-Open-PDK