Energy Efficient 7T SRAM Design For ImprovedSpeed of Application
Volume: 10 - Issue: 02 - Date: 01-02-2021
Approved ISSN: 2278-1412
Published Id: IJAECESTU281 | Page No.: 153-161
Author: Anil Kumar
Co- Author: Shivraj Singh
Abstract:-The need for low power integrated circuits is well known because of their extensive use in the electronic
portable equipments. On chip SRAMs (Static Random Access Memory) determine the power dissipation of SoCs
(System on Chips) in addition to its speed of operation. Hence it is very important to have energy efficient SRAMs. This
Thesis proposes energy efficient SRAM cells (7T) based on adiabatic principles and design modifications.
Bulk of the energy in SRAMs is wasted during charging of the bit lines and discharging it to the ground during read
and writes operations. It is proposed to use adiabatic approach to collect this energy and recycle it. Based on this
thought process a separate and simple adiabatic driver circuit has been designed and used for bit line charging. It is
shown that in 6T SRAM, a total energy of the order of 50% over a given period and around 80% during write cycle can
be saved by the help of this driver.
With this adiabatic driver circuit working in conjunction with conventional 7T SRAM cell other performance
characteristics like read stability, write ability, read and write delay etc have been found by simulation in addition to
energy saving under varied conditions of memory operations. The effect of device parameters of the driver on total
energy of the SRAM cell has been investigated. Further studies covered proposed SRAM cell arrays. With a view to
increase energy saving further, the possibility of having adiabatic SRAM with single bit line for reading and writing is
examined. This architecture improves the total energy saving further (90%). Feat SRAM is designed to get better speed
of operation along with energy saving.
Key Words:-Brain Wave Analysis ; Sounds & Vibration ;HUMAN ENGINEERING ; Working Efficiency of Employees ; Productivity
Area:-Engineering
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