| Presentation | 2014-06-12 Body bias control of low-power reconfigurable accelerator CMA-SOTB Yu FUJITA, KORYO So, Hideharu AMANO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For low power yet high performance processing in battery driven devices, a coarse grained reconfigurable accelerator called Cool Mega Array (CMA)-SOTB is implemented by using Silicon on Thin BOX (SOTB), a new process technology developed by the Low-power Electronics Association & Project (LEAP). A real chip using a 65nm experimental process achieved a sustained performance of 192MOPS with a power supply of 0.4V and power consumption of 1.7mW. A clock frequency of 89MHz was achieved with a power supply of just 0.4V when a forward bias voltage was given. When using a reverse bias, the leakage current could be suppressed to less than 20μW in the stand-by mode. The key concept of CMA-SOTB is maintaining a balance between performance and leakage current by independently controlling the bias voltages of the PE array and the microcontroller. Evaluations of the operational frequency and power consumption of filter application programs shed light on how to find the combination of bias voltages that achieves the best energy efficiency for a required performance. The range of advantageous power supply voltage for a required performance considering the body bias was also found. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | body bias control / reconfigurable accelerator |
| Paper # | RECONF2014-8 |
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| Committee | RECONF |
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| Conference Date | 2014/6/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Reconfigurable Systems (RECONF) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Body bias control of low-power reconfigurable accelerator CMA-SOTB |
| Sub Title (in English) | |
| Keyword(1) | body bias control |
| Keyword(2) | reconfigurable accelerator |
| 1st Author's Name | Yu FUJITA |
| 1st Author's Affiliation | Keio University() |
| 2nd Author's Name | KORYO So |
| 2nd Author's Affiliation | Keio University |
| 3rd Author's Name | Hideharu AMANO |
| 3rd Author's Affiliation | Keio University |
| Date | 2014-06-12 |
| Paper # | RECONF2014-8 |
| Volume (vol) | vol.114 |
| Number (no) | 75 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |