Yet another Encounter Library Characterizer weirdness

[ioztelcan]

Hi,

After I got the .lib file from elc I realized that my output pins have no useful information about them, while the input pins seem fine. I get this in the .lib file:

...
}
pin(Y) {
direction : output;
output_signal_level : RAIL_VDD;
capacitance : 0;
rise_capacitance : 0;
fall_capacitance : 0;
rise_capacitance_range ( 0, 0) ;
fall_capacitance_range ( 0, 0) ;
max_capacitance : 0;
max_transition : 0;
}
dont_use : true;
dont_touch : true;
}
....

Any ideas about what might be wrong? Thanks in advance.

Ilker

 

[artmalik]

Well this doesnt tell much, the problem will be with your setup. Try an inverter first and see if the timing .lib is fine and then proceed to complex cells. Any characterization tool takes to time to get familiar with.