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Patent Searching and Data


Title:
SEMICONDUCTOR INTEGRATED CIRCUIT AND SEMICONDUCTOR MEMORY
Document Type and Number:
Japanese Patent JPH08279299
Kind Code:
A
Abstract:

PURPOSE: To unnecessitate fusing by irradiation with a laser beam, to improve a production yield and to reduce testing costs by using a ferroelectric memory cell for a storage element of a defective address.

CONSTITUTION: A defective address storage circuit 20 is provided with a ferroelectric memory cell array, a latch type sense-amplifier, a pre-charging/ writing circuit, etc. When a power source is switched on, the power-on signal 'PWRON' transites from 'L' to 'H', and controls a bit line potential, a self- board bias and an access control circuit, etc. Further, all the bit lines are individually set to a potential Vss by making the pre-charging circuit 13 on when the power source for the defective address recording circuit 20 is switched on by PWRON, and a fear of inverse polarization of the ferroelectric is eliminated. And a word line driving circuit 10 for the defective address storage circuit generates a word line signal FWL for a specified period and pre-charges the bit line pair before driving each transistor on the memory cell to be ON-state.


Inventors:
SHIMIZU MITSURU
TANAKA SUMIO
Application Number:
JP7882995A
Publication Date:
October 22, 1996
Filing Date:
April 04, 1995
Export Citation:
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Assignee:
TOSHIBA MICRO ELECTRONICS
TOSHIBA CORP
International Classes:
G11C11/413; G11C11/22; G11C11/401; G11C14/00; G11C29/00; G11C29/04; (IPC1-7): G11C29/00; G11C11/22; G11C11/413; G11C14/00
Attorney, Agent or Firm:
鈴江 武彦