Patent ID: 9508456
Filing Date: 2016-11-29
CPC Classification: G11C

Claim Text:
1. A self repair device comprising: an electrical fuse array configured to store information of a failed address in a fuse; an electrical fuse controller configured to store a row address or column address corresponding to a failed bit when a failure occurs, generate a repair address by comparing a failed address inputted during a test to the address stored therein, output a rupture enable signal for controlling a rupture operation of the electrical fuse array, and output row fuse set data or column fuse set data in response to the failed address; and a row/column redundancy unit configured to perform a row redundancy or column redundancy operation in response to the row fuse set data or the column fuse set data applied from the electrical fuse array; wherein the electrical fuse controller is configured to control the rupture operation when the failed address is a multi-bit address in response to a multi-bit enable signal.