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SRAM Operation and Shmoo Plots

HardSystem Design00:00
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Problem

Explain SRAM circuit operation and how shmoo plots are used.

Asked in the Technical Round stage. Evaluating domain knowledge in memory operation and silicon characterization. Explain the role of the cross-coupled inverters, access transistors, wordline, and bitlines during read, write, and hold operations. Then describe how voltage, timing, temperature, or another test variable is swept to produce and interpret a shmoo plot.