Extending flash lifetime in embedded processors by expanding analog choice

Journal Article (Journal Article)

We extend the lifetime of Flash memory in embedded processors by exploiting the fact that data from sensors is inherently analog. Prior work in the computer architecture community has assumed that all data is digital and has overlooked the opportunities available when working with analog data, such as the data recorded by sensors. In this paper, we introduce redundancy into the quantization of sensor data in order to provide several alternative representations. Notably, we tradeoff distortion-the difference between the sensed analog value and the digital quantization of that value-to improve lifetime. Our simulations show that when combining rate, distortion, and lifetime tradeoffs we can extend Flash lifetime at a far smaller capacity cost compared to prior work. More specifically the simulated system shows that it is possible to achieve up to 2.75 × less capacity cost compared to redundant Flash memory and 1.29 × less capacity cost compared to the state of the art coding schemes.

Full Text

Duke Authors

Cited Authors

  • Mappouras, G; Vahid, A; Calderbank, R; Sorin, DJ

Published Date

  • November 1, 2018

Published In

Volume / Issue

  • 37 / 11

Start / End Page

  • 2462 - 2473

International Standard Serial Number (ISSN)

  • 0278-0070

Digital Object Identifier (DOI)

  • 10.1109/TCAD.2018.2857059

Citation Source

  • Scopus