Abstract: A solid state drive and a method for accessing the metadata are provided. The solid state drive includes different kinds of first and second memories and a memory controller which controls the first and second memories, wherein the memory controller receives a metadata access request from a host, and includes a condition checker which determines conditions of the first and second memories in response to the metadata access request and selects at least one of the conditions, and the memory controller accesses to the memory selected by the condition checker.

Abstract: An operation method of an electronic device including a core includes reading first status information from a first status register of a first functional block driven independently of the core, reading second status information from a second status register of a second functional block driven independently of the core, reading first change information from a first flag register of the first functional block, reading second change information from a second flag register of the second functional block, determining whether an operation status of the electronic device is any one status of an idle status and a busy status, based on the read first and second status information and the read first and second change information, and operating in an operation mode corresponding to the determined operation status.

Abstract: A method of accessing data in a storage device including first and second nonvolatile memories of different types is provided. The method includes setting a meta data attribute table by classifying a plurality of meta data based on a plurality of data attributes and accessible memory types, detecting a data attribute of first meta data among the plurality of meta data based on the meta data attribute table in response to receiving a first access request for the first meta data, determining a target memory optimized for the first meta data from among the first and second nonvolatile memories based on the detected data attribute of the first meta data, and performing an access operation on the target memory based on the first meta data. The plurality of meta data are used for controlling an operation of the storage device.

Abstract: An operation method of a memory controller which is configured to control a nonvolatile memory device includes receiving a command from the outside, calculating a delay time based on a currently available write buffer, a previously available write buffer, and a reference value, and processing the command based on the delay time.

Abstract: An operation method of an electronic device including a core includes reading first status information from a first status register of a first functional block driven independently of the core, reading second status information from a second status register of a second functional block driven independently of the core, reading first change information from a first flag register of the first functional block, reading second change information from a second flag register of the second functional block, determining whether an operation status of the electronic device is any one status of an idle status and a busy status, based on the read first and second status information and the read first and second change information, and operating in an operation mode corresponding to the determined operation status.

Abstract: A method of accessing data in a storage device including first and second nonvolatile memories of different types is provided. The method includes setting a meta data attribute table by classifying a plurality of meta data based on a plurality of data attributes and accessible memory types, detecting a data attribute of first meta data among the plurality of meta data based on the meta data attribute table in response to receiving a first access request for the first meta data, determining a target memory optimized for the first meta data from among the first and second nonvolatile memories based on the detected data attribute of the first meta data, and performing an access operation on the target memory based on the first meta data. The plurality of meta data are used for controlling an operation of the storage device.

Abstract: A solid state drive and a method for accessing the metadata are provided. The solid state drive includes different kinds of first and second memories and a memory controller which controls the first and second memories, wherein the memory controller receives a metadata access request from a host, and includes a condition checker which determines conditions of the first and second memories in response to the metadata access request and selects at least one of the conditions, and the memory controller accesses to the memory selected by the condition checker.

Abstract: An operation method of a memory controller which is configured to control a nonvolatile memory device includes receiving a command from the outside, calculating a delay time based on a currently available write buffer, a previously available write buffer, and a reference value, and processing the command based on the delay time.