A memory device and a method of fabrication are provided. The memory
device includes a semiconductor substrate and a charge trapping
dielectric stack disposed over the semiconductor substrate. A gate
electrode is disposed over the charge trapping dielectric stack, where
the gate electrode electrically defines a channel within a portion of the
semiconductor substrate. The memory device includes a pair of raised
bitlines, where the bitlines have a lower portion formed by a first
process and an upper portion formed by a second process.