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Protecting Chips Against Hold Time Violations Due to Variability (Paperback, Softcover reprint of the original 1st ed. 2014)
Loot Price: R3,081
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Protecting Chips Against Hold Time Violations Due to Variability (Paperback, Softcover reprint of the original 1st ed. 2014)
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With the development of Very-Deep Sub-Micron technologies, process
variability is becoming increasingly important and is a very
important issue in the design of complex circuits. Process
variability is the statistical variation of process parameters,
meaning that these parameters do not have always the same value,
but become a random variable, with a given mean value and standard
deviation. This effect can lead to several issues in digital
circuit design. The logical consequence of this parameter variation
is that circuit characteristics, as delay and power, also become
random variables. Because of the delay variability, not all
circuits will now have the same performance, but some will be
faster and some slower. However, the slowest circuits may be so
slow that they will not be appropriate for sale. On the other hand,
the fastest circuits that could be sold for a higher price can be
very leaky, and also not very appropriate for sale. A main
consequence of power variability is that the power consumption of
some circuits will be different than expected, reducing
reliability, average life expectancy and warranty of products.
Sometimes the circuits will not work at all, due to reasons
associated with process variations. At the end, these effects
result in lower yield and lower profitability. To understand these
effects, it is necessary to study the consequences of variability
in several aspects of circuit design, like logic gates, storage
elements, clock distribution, and any other that can be affected by
process variations. The main focus of this book will be storage
elements.
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