Patent ID: 8222686

Claim:
A semiconductor device having a nonvolatile memory cell, comprising: a first semiconductor region and a second semiconductor region formed in a semiconductor substrate; a channel forming region formed in the semiconductor substrate and arranged between the first semiconductor region and the second semiconductor region; a first gate insulating film formed over the channel forming region, the first gate insulating film arranged on a side of the first semiconductor region; a first gate electrode formed over the first insulating film; a second gate insulating film comprised of a non-conductive charge trap film formed over the channel forming region, the second gate insulating film arranged on a side of the second semiconductor region; and a second gate electrode formed over the second insulating film and being adjacent to the first gate electrode, wherein injecting holes into the non-conductive charge trap film is performed by applying negative voltage to the first gate electrode and the second gate electrode and applying positive voltage to the second semiconductor region.