Title:
SEMICONDUCTOR STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/1993/005512
Kind Code:
A1
Abstract:
A semiconductor device having a highly flexible circuit for relieving redundancy. The device is so configured as to drive plural fuse columns (111, 113) using address signals (X1, X(Boolean not)1(Boolean not)). By cutting a fuse element (FAi), a word line (WLA(2i-1) or WLA2i) which is activated by a row driver (RDri) on the logical address is replaced with a word line (WLA(2i+1) or WLA(2i+2)) which is activated by a row driver (RDr(i+1)) on the physical address.
Inventors:
MIYAMOTO SAMPEI (JP)
Application Number:
PCT/JP1991/001142
Publication Date:
March 18, 1993
Filing Date:
August 28, 1991
Export Citation:
Assignee:
OKI ELECTRIC IND CO LTD (JP)
International Classes:
G11C11/407; G11C29/00; (IPC1-7): G11C11/407; G11C29/00
Foreign References:
| JPS6161300A | 1986-03-29 | |||
| JPS57208694A | 1982-12-21 | |||
| JPS60109099A | 1985-06-14 | |||
| JPS60178552A | 1985-09-12 | |||
| JPS63142599A | 1988-06-14 |
Other References:
See also references of EP 0554453A4
Download PDF:
Previous Patent: MAGNETIC TAPE CASSETTE
Next Patent: CIRCUIT FOR CONTROLLING THE PROGRAMMING VOLTAGE OF PROGRAMMABLE MEMORIES
Next Patent: CIRCUIT FOR CONTROLLING THE PROGRAMMING VOLTAGE OF PROGRAMMABLE MEMORIES