MirrorBit Flash Memory
Spansion’s MirrorBit Flash and Saifun’s NROM are two flash memories that use a charge trapping mechanism in nitride to store two bits onto the same cell effectively doubling the memory capacity of a chip. This is done by placing charges on either side of the charge trap layer. The cell is read by using forward and reverse currents through the channel to read either side of the charge trap.
Read more about this topic: Charge Trap Flash
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