Structures and methods for memory cells having a volatile and a
non-volatile component in a single memory cell are provided. The memory
cell includes a first source/drain region and a second source/drain
region separated by a channel region in a substrate. A storage capacitor
is coupled to one of the first and the second source/drain regions. A
floating gate opposes the channel region and separated therefrom by a
gate oxide. A control gate opposes the floating gate. The control gate is
separated from the floating gate by a low tunnel barrier intergate
insulator. The memory cell is adapted to operate in a first and a second
mode of operation. The first mode of operation is a dynamic mode of
operation and the second mode of operation is a repressed memory mode of
operation.