Presentation 2008-07-17
A 45nm Low-Standby-Power Embedded SRAM with Improved Immunity Against Process and Temperature Variations
Makoto YABUUCHI, Koji NII, Yasumasa TSUKAMOTO, Shigeki OHBAYASHI, Susumu IMAOKA, Yoshinobu YAMAGAMI, Satoshi ISHIKURA, Toshio TERANO, Katsuji SATOMI, Hironori AKAMATSU, Hirofumi SHINOHARA,
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Abstract(in English) We develop 512Kb SRAM module in 45nm LSTP CMOS technology with the variation tolerant assist circuits against process and temperature. We introduce a passive resistance to the read assist circuit, and adopt the divided VDD line in the memory cell array to the write assist circuit. The SRAM cell areas with 0.245μm2 and 0.327μm2 are fabricated. From the measurements, we show that, by using our circuitry, the SNM exceeds 120mV and the write margin is improved by 15% in the worst PVT condition.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) SRAM / Assist circuit / 45nm CMOS / Variability
Paper # SDM2008-131,ICD2008-41
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Committee ICD
Conference Date 2008/7/10(1days)
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Registration To Integrated Circuits and Devices (ICD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A 45nm Low-Standby-Power Embedded SRAM with Improved Immunity Against Process and Temperature Variations
Sub Title (in English)
Keyword(1) SRAM
Keyword(2) Assist circuit
Keyword(3) 45nm CMOS
Keyword(4) Variability
1st Author's Name Makoto YABUUCHI
1st Author's Affiliation Renesas Technology Corporation()
2nd Author's Name Koji NII
2nd Author's Affiliation Renesas Technology Corporation
3rd Author's Name Yasumasa TSUKAMOTO
3rd Author's Affiliation Renesas Technology Corporation
4th Author's Name Shigeki OHBAYASHI
4th Author's Affiliation Renesas Technology Corporation
5th Author's Name Susumu IMAOKA
5th Author's Affiliation Renesas Design Corporation
6th Author's Name Yoshinobu YAMAGAMI
6th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
7th Author's Name Satoshi ISHIKURA
7th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
8th Author's Name Toshio TERANO
8th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
9th Author's Name Katsuji SATOMI
9th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
10th Author's Name Hironori AKAMATSU
10th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
11th Author's Name Hirofumi SHINOHARA
11th Author's Affiliation Renesas Technology Corporation
Date 2008-07-17
Paper # SDM2008-131,ICD2008-41
Volume (vol) vol.108
Number (no) 140
Page pp.pp.-
#Pages 5
Date of Issue