Which model in an ibis model file should I use?

[SShir.2]

Currently I am trying to use ibis model for simulation. I found ibis model file provided by STMicro and try to use them. But I could not figure out which model pointed by model selector I should use.

For example, there are 24 candidates of the model for PA0. But I don't know which one for my project.

Actual .ibs files is like below.

Thanks.

[Pin] signal_name     model_name      R_pin   L_pin   C_pin

...

6 PA0 io8p_wsudq_ls_ft_v33 61.160E-3 1.8629E-9 10.243E-15

...

[Model Selector] io8p_wsudq_ls_ft_v33

io8p00_wsudq_ls_ft_v33_pd_lv "SPEED00 1P8V, PD=40kOhm"      

io8p00_wsudq_ls_ft_v33_pu_lv "SPEED00 1P8V, PU=40kOhm"      

io8p00_wsudq_ls_ft_v33_lv "SPEED00 1P8V"      

io8p01_wsudq_ls_ft_v33_pd_lv "SPEED01 1P8V, PD=40kOhm"      

io8p01_wsudq_ls_ft_v33_pu_lv "SPEED01 1P8V, PU=40kOhm"      

io8p01_wsudq_ls_ft_v33_lv "SPEED01 1P8V"      

io8p10_wsudq_ls_ft_v33_pd_lv "SPEED10 1P8V, PD=40kOhm"      

io8p10_wsudq_ls_ft_v33_pu_lv "SPEED10 1P8V, PU=40kOhm"      

io8p10_wsudq_ls_ft_v33_lv "SPEED10 1P8V"      

io8p11_wsudq_ls_ft_v33_pd_lv "SPEED11 1P8V, PD=40kOhm"      

io8p11_wsudq_ls_ft_v33_pu_lv "SPEED11 1P8V, PU=40kOhm"      

io8p11_wsudq_ls_ft_v33_lv "SPEED11 1P8V"      

io8p00_wsudq_ls_ft_v33_pd "SPEED00, PD=40kOhm"      

io8p00_wsudq_ls_ft_v33_pu "SPEED00, PU=40kOhm"      

io8p00_wsudq_ls_ft_v33 "SPEED00"      

io8p01_wsudq_ls_ft_v33_pd "SPEED01, PD=40kOhm"      

io8p01_wsudq_ls_ft_v33_pu "SPEED01, PU=40kOhm"      

io8p01_wsudq_ls_ft_v33 "SPEED01"      

io8p10_wsudq_ls_ft_v33_pd "SPEED10, PD=40kOhm"      

io8p10_wsudq_ls_ft_v33_pu "SPEED10, PU=40kOhm"      

io8p10_wsudq_ls_ft_v33 "SPEED10"      

io8p11_wsudq_ls_ft_v33_pd "SPEED11, PD=40kOhm"      

io8p11_wsudq_ls_ft_v33_pu "SPEED11, PU=40kOhm"      

io8p11_wsudq_ls_ft_v33 "SPEED11"      

[TZARDI · Accepted solution]

Hello,

Actually the choice of the needed submodel depends on your use case. Below you can find some clarifications about the models:

IO speed: speed00: low speed, speed01: medium, speed10: high, speed11: very high

pd: pull down, pu: pull up

Best regards,

[SShir.2]

Thank you for your help. You helped me a lot and solve what I could not understand. I thought the electricity property should depend on actual setting on MCU and I didn't know what "SPEED" or "PD" mean. ​