NONVOLATILE MEMORY SYSTEM INCLUDING NONVOLATILE MEMORY DEVICE AND MEMORY CONTROLLER AND OPERATING METHOD OF MEMORY CONTROLLER

摘要

A nonvolatile memory system includes a nonvolatile memory device including a plurality of memory cells, and a memory controller. The memory controller is configured to count a clock to generate a current time, program dummy data at predetermined memory cells among the plurality of memory cells at a power-off state, detect a charge loss of the predetermined memory cells when a power-on state occurs after the power-off state, and restore the current time based on the detected charge loss.

主权项

1. A nonvolatile memory system comprising:
a nonvolatile memory device including a plurality of memory cells; and a memory controller configured to count a clock signal to generate a current time, program dummy data in predetermined memory cells among the plurality of memory cells before entering a power-off state, detect a charge loss of the predetermined memory cells when a power-on state occurs after the power-off state, and restore the current time based on the detected charge loss, and wherein the selected memory cells are memory cells connected to at least two or more wordlines.