Cited 0 time in webofscience Cited 15 time in scopus

Design of an ultra-low voltage 9T SRAM with equalized bitline leakage and CAM-assisted energy efficiency improvement

Title
Design of an ultra-low voltage 9T SRAM with equalized bitline leakage and CAM-assisted energy efficiency improvement
Authors
Wang, B.Nguyen, Truc QuynhDo, Anh TuanZhou, JunJe, Min KyuKim, Tony Tae Hyoung
DGIST Authors
Je, Min Kyu
Issue Date
2015
Citation
IEEE Transactions on Circuits and Systems I: Regular Papers, 62(2), 441-448
Type
Article
Article Type
Article
Keywords
65 nm CMOS TechnologiesAssociative StorageBitline Leakage EqualizationBitline LeakagesCmos Integrated CircuitsContent Addressable MemoryData DevelopmentEfficiencyEnergy EfficiencyEnergy Efficiency ImprovementEnergy Efficiency ImprovementsLogic DesignOperating VoltageStatic Random Access StorageUltra-Low-VoltageUltra-Low Voltage Sram DesignUltra Low Voltage SramWrite Operations
ISSN
1549-8328
Abstract
This paper presents a 9T multi-threshold (MTCMOS) SRAM macro with equalized bitline leakage and a content-addressable-memory-assisted (CAM-assisted) write performance boosting technique for energy efficiency improvement. A 3T-based read port is proposed to equalize read bitline (RBL) leakage and to improve RBL sensing margin by eliminating data-dependence on bitline leakage current. A miniature CAM-assisted circuit is integrated to conceal the slow data development with HVT devices after data flipping in write operation and therefore enhance the write performance for energy efficiency. A 16 kb SRAM test chip is fabricated in 65 nm CMOS technology. The operating voltage of the test chip is scalable from 1.2 V down to 0.26 V with the read access time from 6 ns to 0.85 μs. Minimum energy of 2.07 pJ is achieved at 0.4 V with 40.3% improvement compared to the SRAM without the aid of the CAM. Energy efficiency is enhanced by 29.4% between 0.38 V∼0.6 V by the proposed CAM-assisted circuit. © 2014 IEEE.
URI
http://hdl.handle.net/20.500.11750/2955
DOI
10.1109/TCSI.2014.2360760
Publisher
Institute of Electrical and Electronics Engineers Inc.
Files:
There are no files associated with this item.
Collection:
Information and Communication EngineeringETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE