Nonvolatile memory module and operating method for the same

Abstract

A nonvolatile memory module includes volatile memory devices sharing a data bus and a control bus; at least one nonvolatile memory device; and a controller for backing up data stored in the volatile memory devices into the nonvolatile memory device at a power failure of a host, and restoring data backed up in the nonvolatile memory device to the volatile memory devices at recovery of the power failure, the controller including: a command/address snooping logic for snooping on a command and an address inputted from a memory controller of the host, and analyzing amounts of stored data in the respective volatile memory devices; and a command/address control logic for selecting one of the volatile memory devices in order of the amounts of stored data based on analysis results of the command/address snooping logic, and backing up data of the selected volatile memory device in the nonvolatile memory device.