
Fundamentals of Flash Memory and Other Solid State Memory Technologies 75
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control gate’s charge determines whether or not a current fl ows through the channel. A
strong charge on the control gate ensures that no current fl ows. A weak charge will
allow a strong current to fl ow through.
The fl oating gate is capable of storing a charge of its own. This adds to the bias of the
control gate. If there is a charge on the fl oating gate, then no current will fl ow through
the channel, whether or not there is a charge on the control gate.
4.2 Erasing, Writing, and Reading Flash Memory
The key to using fl oating gate technology is to put ...