Hello everyone, I am working on a simple scanchain DAC by using the FlipFlop standard cell (dfxtp_1) , but this doesn't seem to working properly for me. In a code_shown block I include the sky130_fd_sc_hd.spice file for the standard cell, my normal sky130.lib.spice library model and lastly i include my stimuli file to set the FF to their starting position. This stimuli is a simple script where I have 16 bits and I adjust my bit value to the one I specified in my parameter block, change the clock so the FF changes state and than put D and clk back to 0 for the next FF state change. This however does not show in my simulation where i simply want to see the output current of the complete DAC (which works perfeclty without FF). I think i am doing something wrong with the insertion of the standard cell, but I can't figure out what i am doing wrong. Does someone know why this happens and how i can solve this?

Please do a 'q' (edit attributes) on the standard cells and verify VGND, VNB, VPB, VPWR are correctly set to ypur power supply net and ground net. in an example circuit I have

VCC

and

VSS

, so I set:

VGND=VSS VNB=VSS VPB=VCC VPWR=VCC

that worked, thank you!