Available Power-Saving Techniques Voltage-based:

• Turning power domains on and off.
• Adaptive power supply - applying a supply level matched to the functional requirement. Switching-based:
• Bit assignment chosen in the architecture to reduce toggling.
• Placement done by the PD tool based on switching activity.
• Reducing switching power through clock gating. KEY Power is saved through voltage control (domain ON-OFF, adaptive supply) and switching control (clock gating, activity-aware placement).

Power-Strap Violations

• They concern how the power-strap area is treated for standard-cell placement.
• ICC provides the command set_pnet_options for this.
• The issue is serious for CTS cells, because it can force a change in their routing.
• The command prevents shorts between a cell's internal blockage and the power stripe. KEY Power-strap violations are shorts between cell internal blockages and power stripes; managed with set_pnet_options.

DECAP as a Local Supply Source Decap cells charge up during normal operation and then deliver that stored charge back when a voltage drop occurs, acting as a local power source. KEY Decaps store charge in normal cycles and release it locally during voltage drops.