Memory device with multiple physical spaces, multiple non-volatile memory arrays, multiple main data, multiple metadata of multiple types of commands, and access method thereof

Abstract

A memory device and an access method applied to the memory device are provided. The memory device is electrically connected to a host, and the memory device includes a memory circuit and a memory controller. The memory circuit includes a first memory array and a second memory array. The first memory array and the second memory array respectively provide a first physical space and a second physical space. The memory controller receives an access command from the host. The memory controller performs the access command to the first physical space when the access command is a first type of command, and the memory controller performs the access command to the second physical space when the access command is a second type of command.