In a nonvolatile memory cell, a selection transistor is connected to a
memory cell transistor in series. The selection transistor is formed into
a double layer gate structure, and has a voltage of each gate driven
individually and separately. Using capacitive coupling between these
stacked gate electrode layers of the selection transistor, a gate
potential of the selection transistor is set to the predetermined voltage
level. An absolute value of the voltage level generated by a voltage
generator to the gates of the selection transistor can be made small, so
that current consumption can be reduced and an layout area of the voltage
generator can be reduced. Thus, a nonvolatile semiconductor memory device
with a low current consumption and a small chip layout area is provided.