20/08/2025

What are the challenges in floorplan? What extra care is needed for 7nm?

o   Power Grid Integrity: Due to lower Vdd and higher current density, the power grid must be extremely robust. This means more metal layers allocated for power

o   Pin Placement Complexity: Higher pin counts and tighter bump pitches make I/O pin placement challenging.

o   Increased Pin Density & Access: Macros at 7nm often have extremely high pin densities. This requires wider channels, careful orientation and blockages.

o   Complex DRCs:

o   Timing Impact: Due to high wire resistance

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