Technique to Reduce Leakage Power
Niagara2 uses gate-bias (GBIAS) cells to reduce leakage
power. GBIAS cells are footprint-compatible with the corresponding
standard- non-GBIAS versions. The only layout
difference is that the GBIAS cell has an additional identification
layer (GBIAS). All the transistors of any cell having this layer
are fabricated with 10% longer channel length.