Question: 2 . A digital system - on - chip in a 1 - V 6 5 nm process ( with 5 0 nm drawn channel

2. A digital system-on-chip in a 1-V 65 nm process (with 50 nm drawn channel lengths and \(\lambda=25\mathrm{~nm}\)) has 950 million transistors, of which 60 million are in logic gates and the remainder in memory arrays. The average logic transistor width is \(12\lambda \) and the average memory transistor width is \(4\lambda \). The memory arrays are divided into banks and only the necessary bank is activated so the memory activity factor is 0.02. The chip is operating at 1.5 GHz . Subthreshold leakage for OFF devices is \(100\mathrm{nA}/\mu \mathrm{m}\) for low-threshold devices and \(10\mathrm{nA}/\mu \mathrm{m}\) for high-threshold devices. Gate leakage is \(5\mathrm{nA}/\mu \mathrm{m}\). Junction leakage is negligible. Memories use low leakage devices everywhere. Logic uses low-leakage devices in all but 7\% of the paths that are most critical for performance. Estimate the static power consumption. Assume half the transistors are OFF (contribute subthreshold leakage) and half the transistors are ON (contribute gate leakage).[Marks 10]
2 . A digital system - on - chip in a 1 - V 6 5

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