Normally-Off Computing for Crystalline Oxide Semiconductor-Based Multicontext FPGA Capable of Fine-Grained Power Gating on Programmable Logic Element With Nonvolatile Shadow Register

Aoki Takeshi; Okamoto Yuki; Nakagawa TakashiKozuma MunehiroKurokawa YoshiyukiIkeda TakayukiYamade NaotoOkazaki YutakaMiyairi HidekazuFujita MasahiroKoyama JunYamazaki Shunpei

首页> 外文期刊>IEEE Journal of Solid-State Circuits >Normally-Off Computing for Crystalline Oxide Semiconductor-Based Multicontext FPGA Capable of Fine-Grained Power Gating on Programmable Logic Element With Nonvolatile Shadow Register

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Normally-Off Computing for Crystalline Oxide Semiconductor-Based Multicontext FPGA Capable of Fine-Grained Power Gating on Programmable Logic Element With Nonvolatile Shadow Register

机译：Normally-Off Computing for Crystalline Oxide Semiconductor-Based Multicontext FPGA Capable of Fine-Grained Power Gating on Programmable Logic Element With Nonvolatile Shadow Register

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摘要

Normally-off computing (Noff computing) using a multicontext field programmable gate array (MC-FPGA) consisting of crystalline oxide semiconductor FETs has been developed. The Noff computing discussed in this paper is a control architecture for an MC-FPGA capable of performing fine-grained power gating on each programmable logic element (PLE) whose registers include a volatile register and also a nonvolatile shadow register for storing and loading data in the volatile register. The MC-FPGA performs fine-grained control of power supplied only to PLEs contributing to effective calculation, when context switching happens. With an MC-FPGA fabricated with a hybrid process of a 1.0 mu m crystalline oxide semiconductor FET on a 0.5 mu m CMOS FET, it has been confirmed that the proposed Noff computing can resume the previous task when a context switches back to it, increases PLE use efficiency, and reduces the power consumption by 27.7% at operating frequencies of 20 MHz with a driving voltage of 2.5 V.

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来源
《IEEE Journal of Solid-State Circuits》 |2015年第9期|2199-2211|共13页
作者
Aoki Takeshi; Okamoto Yuki; Nakagawa TakashiKozuma MunehiroKurokawa YoshiyukiIkeda TakayukiYamade NaotoOkazaki YutakaMiyairi HidekazuFujita MasahiroKoyama JunYamazaki Shunpei;
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作者单位

Semicond Energy Lab Co Ltd, Atsugi, Kanagawa 2430036, Japan;

Univ Tokyo, VDEC, Tokyo 1130032, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类基本电子电路;
关键词
CAAC-IGZO; crystalline IGZO; crystalline oxide semiconductor; field programmable gate array; multicontext; nonvolatile memory; normally-off computing; oxide semiconductor; power gating; shadow register;

Normally-Off Computing for Crystalline Oxide Semiconductor-Based Multicontext FPGA Capable of Fine-Grained Power Gating on Programmable Logic Element With Nonvolatile Shadow Register

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