Methods for real-time repairing of memory failures caused during operations, memory systems performing repairing methods, and data processing systems including repairing memory systems

Abstract

An operating method of a memory controller that controls an operation of a memory device that includes a memory region and a repair memory region. The operating method may include receiving an address associated with the memory region that is included in a first read command and data read out from the memory region associated with the address, decoding the data using an error correction code and detecting an error included in the data, generating error type information indicating a type of an error included in the data, updating, based on the error type information, a count value associated with the address, the count value indicating a number of times that the type of error indicated by the error type information has occurred for the address, comparing the count value with a threshold value, and backing up the data that is stored in the memory region associated with the address to the repair memory region when the count value is equal to the threshold value.