Nonvolatile semiconductor memory device and method for driving the same

摘要

A nonvolatile semiconductor memory device includes a memory cell and a driving unit. The a memory cell has a semiconductor layer having, a channel, and a source region and a drain region provided on both sides of the channel; a first insulating film provided on the channel; a charge retention layer provided on the first insulating film; and a gate electrode provided on the charge retention layer. The driving unit applies a burst signal having a constant amplitude and a constant frequency between the gate electrode and the semiconductor layer and performs at least one of operations of programming and erasing charge on the charge retention layer.