| Presentation | 2014-04-17 Fabrication of a 99%-Energy-Less Nonvolatile Multi-Functional CAM Chip Using Hierarchical Power Gating for a Massively-Parallel Full-Text-Search Engine Shoun MATSUNAGA, Noboru SAKIMURA, Ryusuke NEBASHI, Tadahiko SUGIBAYASHI, Masanori NATSUI, Akira MOCHIZUKI, Tetsuo ENDOH, Hideo OHNO, Takahiro HANYU, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We demonstrate a 1-Mb nonvolatile TCAM-based search engine using 90-nm CMOS and perpendicular MTJ technologies for an ultra low-energy full-text search system. We newly developed a nonvolatile TCAM cell circuit for text-search use. Extending the assignments of a 2-bit storage-data pattern and a 2-bit input-data pattern enables a fine-grained power gating scheme to work in the nonvolatile TCAM word circuits with eliminating the wasted text-search operations. Use of the developed nonvolatile TCAM-based search engine makes it possible to significantly reduce power consumption not only in the search mode but also in the standby/sleep mode by a hierarchical power gating, while having high-speed search operation due to the parallel processing capability. As a result, the energy consumption for full-text search can be reduced to about 1/100 compared to the serial search performed on a conventional search-sever system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Full text search / TCAM / power gating / nonvolatile / MTJ device |
| Paper # | ICD2014-8 |
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| Committee | ICD |
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| Conference Date | 2014/4/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Integrated Circuits and Devices (ICD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fabrication of a 99%-Energy-Less Nonvolatile Multi-Functional CAM Chip Using Hierarchical Power Gating for a Massively-Parallel Full-Text-Search Engine |
| Sub Title (in English) | |
| Keyword(1) | Full text search |
| Keyword(2) | TCAM |
| Keyword(3) | power gating |
| Keyword(4) | nonvolatile |
| Keyword(5) | MTJ device |
| 1st Author's Name | Shoun MATSUNAGA |
| 1st Author's Affiliation | Tohoku University() |
| 2nd Author's Name | Noboru SAKIMURA |
| 2nd Author's Affiliation | NEC Corporation |
| 3rd Author's Name | Ryusuke NEBASHI |
| 3rd Author's Affiliation | NEC Corporation |
| 4th Author's Name | Tadahiko SUGIBAYASHI |
| 4th Author's Affiliation | NEC Corporation |
| 5th Author's Name | Masanori NATSUI |
| 5th Author's Affiliation | Tohoku University |
| 6th Author's Name | Akira MOCHIZUKI |
| 6th Author's Affiliation | Tohoku University |
| 7th Author's Name | Tetsuo ENDOH |
| 7th Author's Affiliation | Tohoku University |
| 8th Author's Name | Hideo OHNO |
| 8th Author's Affiliation | Tohoku University |
| 9th Author's Name | Takahiro HANYU |
| 9th Author's Affiliation | Tohoku University |
| Date | 2014-04-17 |
| Paper # | ICD2014-8 |
| Volume (vol) | vol.114 |
| Number (no) | 13 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |