Nonvolatile memory and semiconductor device

A nonvolatile memory comprising a memory transistor,

• said memory transistor comprising:
• a source region, a drain region and an active region using a single crystal semiconductor;
• a first gate insulating film over the active region;
• a plurality of floating gate electrodes;
• a second gate insulating film;
• a control gate electrode,
• said active region comprising:
• a plurality of impurity regions provided in a stripe shape in a channel length direction,
• a plurality of intrinsic or substantially intrinsic channel forming regions interposed between the plurality of impurity regions,
• wherein each of the plurality of floating gate electrodes is provided over each of the plurality of channel forming regions via the first gate insulating film,
• wherein the control gate electrode is overlapped with the plurality of floating gate electrodes via the second gate insulating film,
• wherein the memory transistor stores multi-valued data.

A nonvolatile memory comprising a memory transistor,

• said memory transistor comprising:
• a source region, a drain region and an active region using a single crystal semiconductor;
• a first gate insulating film over the active region;
• a plurality of floating gate electrodes;
• a second gate insulating film;
• a control gate electrode,
• said active region comprising:
• a plurality of impurity regions provided in a stripe shape in a channel length direction,
• a plurality of intrinsic or substantially intrinsic channel forming regions interposed between the plurality of impurity regions,
• wherein each of the plurality of floating gate electrodes is provided over each of the plurality of channel forming regions via the first gate insulating film,
• wherein the control gate electrode is overlapped with the plurality of floating gate electrodes via the second gate insulating film,
• wherein an electric potential of each of the plurality of impurity regions is independently controlled,
• wherein the memory transistor stores multi-valued data.