Memory apparatus with redundancy array
US10514983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Mar 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0411
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods for memory repair for a memory device are described. An example apparatus includes: a data input/output circuit that provides data via a plurality of data signal lines; memory cell arrays; an ECC/Parity redundancy array; and a redundancy circuit coupled to the plurality of data signal lines. The redundancy circuit includes an error correction block that generates error correction information based on the data and provides the error correction information to the ECC/Parity redundancy array. If during test it is determined that a failure is not repairable by standard redundancy including error correction code, the error correction parity array is not needed and can be redirected by a block repair circuit. The error correction circuit can now have its functionality changed to allow the error correction array to become a block repair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.