Presentation 2003/5/21
16.7fA/cell Tunnel-Leakage-Suppressed 16Mb SRAM for Handling Cosmic-Ray-Induced Multi-Errors
Kenichi OSADA, Yoshikazu SAITOH, Koichiro ISHIBASHI,
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Abstract(in English) Tunnel leakage currents become the dominant from of leakage as MOS technology advances. An electric-field-relaxation scheme that suppresses these currents is described. Cosmic-ray-induced multi-errors have now become a serious problem at sea level. An alternate error checking and correction architecture for the handling of such errors is also described, along with the application of both schemes in an ultra-low-power 16-Mbit SRAM. A test chip fabricated by usign 0.13-μm CMOS technology showed. per-cell standby-current values of 16.7fA at 25℃ and 101.7fA at 90℃. The chip provided a 99.5% reduction in soft errors under accelerated neutron-exposure testing..
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Keyword(in English) SRAM / low standby current / gate tunnel leakage / cosmic ray / ECC
Paper # ICD2003-24
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Committee ICD
Conference Date 2003/5/21(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) 16.7fA/cell Tunnel-Leakage-Suppressed 16Mb SRAM for Handling Cosmic-Ray-Induced Multi-Errors
Sub Title (in English)
Keyword(1) SRAM
Keyword(2) low standby current
Keyword(3) gate tunnel leakage
Keyword(4) cosmic ray
Keyword(5) ECC
1st Author's Name Kenichi OSADA
1st Author's Affiliation Central Research Laboratory, Hitachi, Ltd.()
2nd Author's Name Yoshikazu SAITOH
2nd Author's Affiliation Semiconductor & Integrated Circuits, Hitachi, Ltd.
3rd Author's Name Koichiro ISHIBASHI
3rd Author's Affiliation Central Research Laboratory, Hitachi, Ltd.
Date 2003/5/21
Paper # ICD2003-24
Volume (vol) vol.103
Number (no) 88
Page pp.pp.-
#Pages 6
Date of Issue