Title:
METHOD AND DEVICE FOR MEMORY CELL DIAGNOSIS
Document Type and Number:
WIPO Patent Application WO/2010/070739
Kind Code:
A1
Abstract:
A memory cell diagnostic method is provided for testing the writing and reading of data to and from each of a plurality of memory cells (200 to 204) in synchronization with a clock. The method includes a writing step of performing sequential writing to target addresses of the target memory cell (200) while shifting a memory cell to be written and an address to be written for each clock cycle and a matching step of reading the data from an address already written in the writing step of the memory cell (200) which is not being written in the writing step and matching the read data with the data recorded in the address of the memory cell (200) in the writing step for each clock cycle.
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Inventors:
MIGITA, Koji (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 21185, JP)
右田 幸治 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通アドバンストテクノロジ株式会社内 Kanagawa, 21185, JP)
UMEZAKI, Yasuyuki (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 21185, JP)
右田 幸治 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通アドバンストテクノロジ株式会社内 Kanagawa, 21185, JP)
UMEZAKI, Yasuyuki (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 21185, JP)
Application Number:
JP2008/072888
Publication Date:
June 24, 2010
Filing Date:
December 16, 2008
Export Citation:
Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-sh, Kanagawa 88, 21185, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 21185, JP)
MIGITA, Koji (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 21185, JP)
右田 幸治 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通アドバンストテクノロジ株式会社内 Kanagawa, 21185, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 21185, JP)
MIGITA, Koji (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 21185, JP)
右田 幸治 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通アドバンストテクノロジ株式会社内 Kanagawa, 21185, JP)
International Classes:
G11C29/56; G11C29/56
Attorney, Agent or Firm:
ITOH, Tadahiko (32nd Floor, Yebisu Garden Place Tower 20-3, Ebisu 4-chome, Shibuya-k, Tokyo 32, 15060, JP)
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