METHOD AND APPARATUS FOR IN-SYSTEM REPAIR OF DRAM IN BURST REFRESH BY REDUNDANCY ALLOCATION VIA OTP ELEMENTS

摘要

In a repair of a random access memory (RAM) an error information is received a fail address of the RAM identified and a one time programming applied to a portion of the redundancy circuit while a content of the RAM is valid. The RAM is a dynamic access RAM (DRAM) a refresh burst is applied to the DRAM followed by a non refresh interval and the one time programming is performed during the non refresh interval.