METHOD FOR OPERATING MEMORY CONTROLLER, AND MEMORY SYSTEM HAVING THE SAME

摘要

PURPOSE: An operating method of a memory controller and a memory system including the memory controller are provided to reduce the maximum number of times of read retry operation for a storage area by calculating a time difference between a read operation and a program operation for the storage area of a nonvolatile memory. CONSTITUTION: An RTC(Real Time Clock) circuit(30-2) generates first and second RTC values in response to a clock signal. A microprocessor(30-1) controls a program for a nonvolatile memory of the first RTC value indicating a first view point. When read operation is performed, the microprocessor calculates a difference by using the first RTC value read from the nonvolatile memory and the second RTC value indicating a second view point. When read retry operation is performed, the microprocessor controls the reduction of the maximum number of times of the read retry operation by using the difference.