Semiconductor storage device having a voltage generator

摘要

According to one embodiment, a nonvolatile semiconductor storage device includes a memory cell, a voltage generator configured to output a first voltage and a second voltage, and a controller. The controller executes a write operation, which includes a first read operation, a program operation, and a verify operation. The controller executes the first read operation before the program operation and the verify operation. The controller executes the first read operation by applying the first voltage to a gate of the memory cell. The controller executes an erase verify operation by applying the second voltage to the gate of the memory cell. The first voltage is higher than the second voltage.

主权项

1. A nonvolatile semiconductor storage device comprising:
a memory cell; a voltage generator configured to output a first voltage and a second voltage; and a controller configured to execute a write operation, the write operation including a first read operation, a program operation, and a verify operation, the controller being configured to execute the first read operation before the program operation and the verify operation, the controller being configured to execute the first read operation by applying the first voltage to a gate of the memory cell, the controller being configured to execute an erase verify operation by applying the second voltage to the gate of the memory cell, the first voltage being higher than the second voltage.