Refresh controller in semiconductor memory

Details Refresh controller in semiconductor memory Refresh controller in semiconductor memory

Filed on

1999-10-28

Date issued

2000-12-26

Examiner

Dinh, Son T.

Patent Class

Static information storage and retrieval

SubClass

Read/write circuit

SubSubClass

Data refresh

Other Related Categories

365233, G11C 700

Type

Patent

Status

active

Patent number

061669806

Description

ABSTRACT:
Semiconductor memory includes a plurality of cell blocks, with each cell block including a plurality of memory cells. The refresh controller refreshes a refresh defect cell in one of the cell blocks when a memory cell in a different one of the cell blocks and designated by a same address as the refresh defect cell is refreshed.

REFERENCES:
patent: 5644545 (1997-07-01), Fisch
patent: 5933377 (1999-08-01), Kidaka
patent: 5991218 (1999-11-01), Kushiyama
patent: 5999473 (1999-12-01), Harrington et al.

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