hw12 - University of California at Berkeley College of...

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University of California at Berkeley College of Engineering Department of Electrical Engineering and Computer Sciences EECS150 J. Wawrzynek Spring 2003 Homework #12 This homework is due on Thursday May 1 st by 2pm . Homework will be accepted in the EECS150 homework box outside 125 Cory Hall. Late homework will be penalized by 50%. No late homework will be accepted after the solution is handed out. 1. Power/energy units. a) Consider a logic gate driving an output node with an average of one transition per eight clock cycles (clock frequency is 100MHz). The output has a total capacitance of 10fF, and Vdd=3volts. What is the average power consumption of the gate? b) Battery storage is often expressed in Watt-hours. What is the energy storage capacity in Joules of a 10 Watt-hour battery? How long would it power the above gate? 2. Switching power. Consider the simple AND/OR circuit shown below. New values are applied to the four inputs at a rate of f . Input values are applied as independent uniform random sequences
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hw12 - University of California at Berkeley College of...

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