@inproceedings{b76e07dd105a440789aa8dd94f9cefd6,
title = "Non-Volatile Coarse Grained Reconfigurable Array Enabling Two-step Store Control for Energy Minimization",
abstract = "Non-volatile power gating introducing MTJ into a flip-flop is an attractive technique for IoT devices. However, the time required for a successful store operation to MTJs varies at non-volatile flip-flops (NVFFs) due to process and voltage variation. This paper describes implementation and real-chip evaluation of a non-volatile Coarse Grained Reconfigurable Array employing verify-and-retryable NVFF (VR-NVFF) circuits and two-step store (TSS) control by instructions of a microcontroller. Test chips fabricated in a 40nm CMOS/MTJ hybrid technology have demonstrated that the TSS approach using both 30ns/100ns store operations reduces power by 37-42% when running an image processing program at 100MHz.",
keywords = "Coarse Grained Reconfigurable Array, MTJ, Non-volatile, energy, flip-flop, power gating",
author = "Kimiyoshi Usami and Sosuke Akiba and Hideharu Amano and Takeharu Ikezoe and Keizo Hiraga and Kenta Suzuki and Yasuo Kanda",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 23rd IEEE Symposium on Low-Power and High-Speed Chips and Systems, COOL CHIPS 2020 ; Conference date: 15-04-2020 Through 17-04-2020",
year = "2020",
month = apr,
doi = "10.1109/COOLCHIPS49199.2020.9097630",
language = "English",
series = "IEEE Symposium on Low-Power and High-Speed Chips and Systems, COOL CHIPS 2020 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "IEEE Symposium on Low-Power and High-Speed Chips and Systems, COOL CHIPS 2020 - Proceedings",
}