Nonvolatile memory system, nonvolatile memory device, data read method, and data read program

摘要

A nonvolatile memory device has a controller and flash memory. The flash memory stores user data and an error correcting code for correcting an error in the user data. When there is a read command from the outside, the user data and error correcting code are read from the flash memory. If there is any correctable error in the read user data, error correction is performed and then the data is outputted. If the there is uncorrectable error, the data is outputted directly without any correction.