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Dynamic Vt SRAM: a leakage tolerant cache memory for low voltage microprocessors
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Source International Symposium on Low Power Electronics and Design archive
Proceedings of the 2002 international symposium on Low power electronics and design table of contents
Monterey, California, USA
SESSION: Poster Session 3 table of contents
Pages: 251 - 254  
Year of Publication: 2002
ISBN:1-58113-475-4
Authors
Chris H. Kim  Purdue University, West Lafayette, IN
Kaushik Roy  Purdue University, West Lafayette, IN
Sponsors
SIGDA: ACM Special Interest Group on Design Automation
ACM: Association for Computing Machinery
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 11,   Downloads (12 Months): 55,   Citation Count: 14
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ABSTRACT

This paper presents a Dynamic Vt SRAM (DTSRAM) architecture to reduce the subthreshold leakage in cache memories. The Vt of each cache line is controlled separately by means of body biasing. In order to minimize the energy and delay overhead, a cache line is switched to high Vt only when it is not likely to be accessed anymore. Simulation results from SimpleScalar framework show that even after considering the energy overhead, the DTSRAM can save 72% of the cache leakage with a performance loss less than 1%. Layout of the DTSRAM shows that the area penalty is minimal.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
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H. Mizuno, K. Ishibashi, T. Shimura, et al, "An 18-μA Standby Current 1.8-V, 200-MHz Microprocessor with Self-Substrate-Biased Data-Retention Mode", IEEE JSSC, vol. 34, no. 11, nov 1999.
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TSMC 0.18UM Mixed Signal/RF 1P6M+ Salicide 1.8V/3.3V Design Rule, Taiwan Semiconductor Manufacturing Co., LTD
 
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T. Kuroda, T. Fujita, S. Mita, et al, "A 0.9-V, 150-MHz, 10-mW, 4mm2, 2-D Discrete Cosine Transform Core Processor with Variable Threshold-Voltage Scheme", IEEE JSSC, vol.31, no. 11, nov 1996.

CITED BY  14

Collaborative Colleagues:
Chris H. Kim: colleagues
Kaushik Roy: colleagues