MEMORY DEVICE, CONTROLLER, HOST DEVICE, DATA PROCESSING SYSTEM, CONTROL PROGRAM, METHOD OF OPERATING MEMORY DEVICE AND METHOD OF OPERATING HOST DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of improving the performance of a memory device.SOLUTION: A controller in a first mode (a standby mode) causes an erasure unit area of a first physical address associated with a first logical address in a first table to be an erasure standby area when receiving an erasure command and the first logical address. The controller in the first mode replaces the first physical address with a physical address allocated to an erased area in the first table. The controller in a second mode (an IE mode) sets the erasure standby area in the erased area. The controller changes an operation mode to a third mode (an RIE mode) when receiving a release command to instruct to release the second mode while erasing data of the erasure standby area from a host device. The controller erases unerased data of the erasure standby area, and changes the operation mode from the third mode to the first mode in the case of operating in the third mode.SELECTED DRAWING: Figure 4