Title:
SEMICONDUCTOR STORAGE DEVICE, DATA WRITING METHOD, AND MANUFACTURING METHOD OF SEMICONDUCTOR STORAGE DEVICE
Document Type and Number:
Japanese Patent JP2023079292
Kind Code:
A
Abstract:
PURPOSE: To provide a semiconductor storage device which allows a data storage period to be extended without causing an increase in time to be spent on refresh processing and without causing a decline in yield, and to provide a data writing method, and a manufacturing method of the semiconductor storage device.CONSTITUTION: A memory control part in a semiconductor storage device includes: a data writing part for writing information data in each block of a memory device according to a writing command; a verification processing part for reading the information data from a write-destination block every time information data is written in each block, and for detecting a number of error bits generated in the information data that has been read, for each block; and a rewriting processing part for writing the information data in another block which is different from the write-destination block if the number of error bits is equal to a prescribed threshold or more.SELECTED DRAWING: Figure 1
Inventors:
OKADA TOSHIHARU
Application Number:
JP2021192681A
Publication Date:
June 08, 2023
Filing Date:
November 29, 2021
Export Citation:
Assignee:
LAPIS TECH CO LTD
International Classes:
G06F12/00; G06F11/10; G06F11/14; G11C29/44
Attorney, Agent or Firm:
Patent Attorney Corporation Rext International Patent Office