Channels
#openroad
Title
k
Krzysztof Herman
05/05/2022, 11:23 PMHi, could You please help me to understand how OpenSTA reports the hold time in this simple case ?
m
Matt Liberty
05/06/2022, 4:22 AMthe library hold time is -0.05 not 0.05
k
Krzysztof Herman
05/06/2022, 1:56 PM@User thank You! All clear now, seems to be a pretty common case that the hold time is negative, here I found a tabe from TSMC 180 nm standard cell which reports some values of the hold time
image.png
the other thing is, why if the data required time is -0.05 and data arrival time is 0.03 the difference -0.05 - 0,03 is reported as positive number ?
m
Matt Liberty
05/06/2022, 3:26 PMits .03 - (-.05)
2 Views