Patent ID: 9734057
Date: 2017-08-15
CPC Classifications: G06F

Claim:
1. A method of operating a semiconductor storage device including a nonvolatile memory and a controller including a buffer memory, the buffer memory including a data area and a map area, the method comprising: determining whether a read operation mode of the nonvolatile memory is a sequential read operation or a random read operation; allocating a part of the map area as the data area of the buffer memory upon determining that the read operation mode is the sequential read operation and allocating a part of data area as the map area of the buffer memory upon determining that the read operation mode is the random read operation; and performing the read operation mode to read out user data and map data from the nonvolatile memory and storing the user data and the map data in the data area of the buffer memory and the map area of the buffer memory, respectively.