Semiconductor memory device having error correction function and

Details Semiconductor memory device having error correction function and Semiconductor memory device having error correction function and

1986-05-15

1988-08-30

Smith, Jerry

Excavating

371 50, 371 51, G06F 1110, G06F 1120

Patent

active

047681934

ABSTRACT:
A semiconductor memory device having a main memory cell array including a plurality of rows of cell arrays, each row corresponds to a two-dimensional virtual matrix configuration. A redundancy memory cell array is provided which includes a plurality of rows of redundancy memory cells, each row corresponding to one horizontal or vertical group of memory cells of the virtual matrix configuration. When a selected memory cell is a predetermined defective cell, a row of memory cells including the defective cell is replaced with the redundancy memory cell array, thereby correcting a hard error. Also, the defective cell is accessed by an error checking and correcting circuit of a horizontal and vertical parity checking type. A horizontal or vertical group of memory cells including the selected memory cell is replaced with the corresponding row of the redundancy memory cell array, thereby correcting a soft error and a hard error other than the predetermined hard error.

REFERENCES:
patent: 4394763 (1983-07-01), Nagano
patent: 4456993 (1984-06-01), Taniguchi
patent: 4464747 (1984-08-01), Groudan
patent: 4584681 (1986-04-01), Singh
patent: 4656610 (1987-04-01), Yoshida
patent: 4688219 (1987-08-01), Takamae
IEEE Journal of Solid-State Circuits, vol. SC-18, No. 5, Oct. 1983, "Circuit Techniques for a VLSI Memory", by Mano et al., pp. 463-470.

Affiliated with

Also associated with

Rating

Semiconductor memory device having error correction function and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory device having error correction function and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory device having error correction function and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2093211