New PDF release: An ASIC Low Power Primer: Analysis, Techniques and

By Rakesh Chadha

ISBN-10: 1461442702

ISBN-13: 9781461442707

ISBN-10: 1461442710

ISBN-13: 9781461442714

This e-book presents a useful primer at the concepts used in the layout of low energy electronic semiconductor units. Readers will enjoy the hands-on strategy which starts off shape the ground-up, explaining with uncomplicated examples what energy is, the way it is measured and the way it affects at the layout strategy of application-specific built-in circuits (ASICs). The authors use either the Unified energy layout (UPF) and customary energy layout (CPF) to explain intimately the ability motive for an ASIC after which consultant readers via a number of architectural and implementation thoughts that may support meet the facility cause. From examining procedure strength intake, to strategies that may be hired in a low energy layout, to a close description of 2 trade criteria for shooting the facility directives at numerous levels of the layout, this publication is full of details that would supply ASIC designers a aggressive part in low-power design.

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Additional resources for An ASIC Low Power Primer: Analysis, Techniques and Specification

Sample text

This is also similar to the standard cell logic trade-off described in Sect. 3. The above trade-off between leakage power and speed are applicable during normal memory operation. Similarly, when the memory is inactive, certain techniques can be adopted to reduce the leakage power for the memories. These methods are employed when the memory macro is inactive and thus there is no trade-off with respect to performance. 2 Controlling Leakage Power in Inactive Mode For a memory macro in inactive mode, the following are a few of the techniques used to reduce the leakage power: (a) Shutting down of peripheral logic.

Unlike the power for standard cell logic and memory macros, the power for special analog macros can have other dependencies (such as bias circuitry) which do not depend upon activity. 75 15 In summary, the key items are: • • • • • The memory power is dependent upon whether the memory is enabled and also upon whether it is performing a read or a write operation. The memory leakage power can be reduced by placing the memory in one of the available sleep modes. The IO power is sourced from core as well as IO power supplies.

085”); } } Just like the case of combinational cells, the switching power can be dissipated even when the outputs or the internal state(s) does not have a transition. A common example is the clock that toggles at the clock pin of a flip-flop. Significant power is dissipated in the flip-flop with each clock toggle even if the flip-flop does not change state. This is typically due to switching of an inverter inside of the flip-flop cell. An example of the input clock pin power specification is shown below.

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An ASIC Low Power Primer: Analysis, Techniques and Specification by Rakesh Chadha


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