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Title:
半導体集積回路装置
Document Type and Number:
Japanese Patent JP3781270
Kind Code:
B2
Abstract:
A semiconductor integrated circuit device utilizing a memory cell containing a transistor to write information and a storage MOSFET to retain an information voltage in the gate, a word line placed to intersect with a write data line and a read data line, for connecting to the control terminal of the write transistor and a memory cell array for issuing an output on the read data line corresponding to the read signal from said memory cell in response to a select signal from said write transistor and by means of a data select circuit select one from among said plurality of read data lines from the data line select circuit and connect to either a first or second common data line, precharge said read data line to a first voltage within a first period, discharge said read data line to a second voltage by means of a second storage MOSFET of said memory cell set to on status for said word line selected within the second period, precharge said first and second common data lines to a third voltage between said first and said second voltages within said first period and, amplify the read signal appearing on either of the common data lines from the read data line selected by said data line select circuit within said second period by using the precharge voltage on said other common data line as a reference voltage.

Inventors:
Kiyoshi Ito
Kazuo Nakazato
Application Number:
JP2000619033A
Publication Date:
May 31, 2006
Filing Date:
May 14, 1999
Export Citation:
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Assignee:
株式会社日立製作所
International Classes:
H01L27/108; G11C11/402; G11C11/405; G11C11/4076; H01L21/8242
Domestic Patent References:
JPH01255269A1989-10-12
JPS6319847A1988-01-27
JPH08250673A1996-09-27
JPH0254572A1990-02-23
JPS58220464A1983-12-22
Attorney, Agent or Firm:
Mitsumasa Tokuwaka



 
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