The present application belongs to the technical field of low
power consumption of
integrated circuit design, and discloses a multi-
threshold voltage unit
distribution method, comprising the following steps: step 1:
data preparation: obtaining a simplified path set according to a full high threshold circuit, and obtaining
unit delay, timing increase / decrease factor and static
power consumption value of the full high / low threshold circuit; step 2: distributing threshold according to the path set: distributing
threshold point by point in the full high threshold circuit according to path weight and unit weight until the paths in the path set all meet timing requirements; and step 3: updating the path set: applying the threshold distribution result and performing
static timing analysis, if the
static timing analysis result does not meet timing, updating the path set and performing the threshold distribution operation according to the path set again until the
static timing analysis result meets timing. The present application effectively reduces the method
running time through the simplified path set, and ensures threshold distribution accuracy and timing convergence through updating the path set.