Skip to main content

Self-Timed SRAM for Energy Harvesting Systems

Buy Article:

$105.00 plus tax (Refund Policy)

Portable digital systems need to be not just low power but power efficient as they are powered by low batteries or energy harvesters. Energy harvesting systems tend to provide nondeterministic, rather than stable, power over time. Existing memory systems use delay elements to cope with the problems under different Vdds. However, this introduces huge penalties on performance, as the delay elements need to follow the worst case timing assumption under the worst environment. In this paper, the latency mismatch between memory cells and the corresponding controller using typical delay elements is investigated and found to be highly variable for different Vdd values. A Speed Independent (SI) SRAM memory is then developed which can help avoid such mismatch problems. It can also be used to replace typical delay lines for use in bundled-data memory banks. A 1 Kb SI memory bank is implemented based on this method and analysed in terms of the latency and power consumption. In addition, a 1 Kb bundled-data memory bank using SI SRAM as delay bundling devices is also implemented. Comparative studies demonstrate the advantages and disadvantages of these methods.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: BUNDLED-DATA; COMPLETION DETECTION; DELAY LINES; POWER EFFICIENT; SELF-TIMED CIRCUITS; SPEED INDEPENDENT (SI); SRAM; VARIABLE POWER SUPPLY

Document Type: Research Article

Publication date: 2011-04-01

More about this publication?
  • The electronic systems that can operate with very low power are of great technological interest. The growing research activity in the field of low power electronics requires a forum for rapid dissemination of important results: Journal of Low Power Electronics (JOLPE) is that international forum which offers scientists and engineers timely, peer-reviewed research in this field.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more