SMART SELF REPAIR DEVICE AND METHOD

摘要

A smart self-repair device includes an ARE array configured to store information on respective bits of a fail address in fuses; a self-repair control block configured to store a row address and a column address corresponding to a fail bit when a fail occurs, analyze a fail mode by comparing the fail address inputted in a test and the stored addresses, and output fail address information and row fuse set information or column fuse set information according to the fail mode; a data control block configured to output repair information to the ARE array according to the fail address information and the row fuse set information or the column fuse set information; and a rupture control block configured to control a rupture operation of the ARE array.

主权项

1. A smart self-repair device comprising:
an array rupture electrical fuse (ARE) array configured to store information on respective bits of a fail address in fuses; a self-repair control block configured to store a row address and a column address corresponding to a fail bit when a fail occurs, analyze a fail mode by comparing the fail address inputted in a test and the stored addresses, and output fail address information and row fuse set information or column fuse set information according to the fail mode; a data control block configured to output repair information to the ARE array according to the fail address information and the row fuse set information or the column fuse set information; and a rupture control block configured to control a rupture operation of the ARE array, wherein the self-repair control block comprises: a repair selection unit configured to store the row address and the column address corresponding to the fail bit, and analyze the fail mode by comparing the fail address inputted in the test and the stored addresses; and a fuse set selection unit configured to output the fail address information and the row fuse set information or the column fuse set information in correspondence to the fail mode.