I. Introduction
Historically, power efficiency and reliability have been considered conflicting metrics; typical design for reliability solutions, as shown in Table I, is, in fact, intrinsically power inefficient. This antagonism can also be viewed from the power perspective: the urge of low-power devices becomes a force that contributes to reduce the reliability of devices. Examples of Power-Reliability Tradeoff
DfR Solution | Impact on Power |
---|---|
Use of redundancy | Increases area; affects static power |
Use of strong signals | Achieved through high-swing signals, i.e., larger Vdd; affects static and dynamic power. |
Use of robust devices | Achieved through large devices; affects static and dynamic power. |