Skhynix Inc.

Seoul National University

Woojae Shin

Hyuk-Jae Lee

Hyokeun Lee

Hyunmin Jung

Sunwoong Kim

A semiconductor device may include a media controller configured to output a write requested address when a write request to a nonvolatile memory device is provided from a host; and a cold address manager. The cold address manager may include a stack storing meta data for the write requested address, region information storage configured to manage addresses of the nonvolatile memory device with regions such that length of a region of the regions may vary after a predetermined period, a cold address detector configured to update the stack and the region information storage after the predetermined period and to detect whether an address of the nonvolatile memory device is a cold address, the cold address having write requests performed at less than a predetermined level.

Semiconductor device for managing cold addresses of nonvolatile memory device

A semiconductor device may include a media controller configured to output an address in response to receiving a write request for writing to a nonvolatile memory. The semiconductor device may also include a hot address detector. The hot address detector is configured to store a list including the address output from the media controller and including meta data related to the address, to update the meta data according to the address output from the media controller, to determine whether the address output from the media controller is a hot address, and to adjust a length of the list.

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Seoul, South Korea

Woojae Shin