Power Ground Grid Insertion
Power Ground Grid Insertion
Category Physical Design
Power Switch Cell Placement in VLSI
Power Switch Cell Placement Drawbacks In the above figure we can see that power switch cells are placed in array pattern in rows.
Tap Cell Placement in VLSI
Tap Cell Placement: Latch-up condition: Latch-up basically means a short circuit condition between power and ground. Due to this short circuit condition, a low impedance path is created. So in order to limit this resistance between power and ground connections…
Boundary Cap Cells/End Cap Placement
What is Boundary Cap (End Cap) ? In the above picture, we can see that all the boundary cap cells are sitting at the periphery of the design and within the area bounded by the boundary cap, we place Standard…
Level Shifter Cell
Level Shifter Cell:
Retention Flops
Retention Flops:
Isolation Cell Placement
Isolation cell placement Type of Isolation Cells Verify DRC We verify DRC after the Isolation cell placement to look for PG rail connectivity, Geometry checks, Metal short, etc. We must fix these DRCs before going…
TIE Cells in VLSI
What are TIE Cells? Types of TIE Cells There are two types of TIE Cells: – Tie High One pin to VDD and other to signal nets – Tie Low One pin to VSS and other to…
AON Cell
AON Cell In low power design, when we have always on power domain and switchable domain (ON/OFF Power Domain) and the cells are interacting between these domains then we need AON Cells which remains ON during OFF state of switchable…
Decap Cells
Decap Cells Decap cell is basically a capacitor cell which is used temporarily in the design between power and ground rails to counter the functional failure. We cant have functional failure in our design. So to avoid any kind of…