What is Floating gate?
An electrode in a flash memory cell that is completely surrounded by insulator. Storing electrons on it shifts the transistor's threshold voltage, so data is kept even without power.
Field: SRAM and flash memory
Floating gate in the explanations
Electrons (negative charge) on the floating gate cancel part of the gate voltage, so more voltage is needed to form a channel and the threshold rises.
In flash memory erase, what happens to a cell's threshold v…A flash cell is a transistor with a floating gate (or charge-trap layer) beneath its control gate that stores electrons.
Which correctly describes how data is written to and erased…A charge-trap cell stores electrons in trap states within an insulating silicon nitride film instead of a conductive floating gate.
In charge-trap cells, widely used in 3D NAND, which materia…
Questions that mention Floating gate (4)
- In flash memory erase, what happens to a cell's threshold voltage when electrons are removed from the floating gate or similar layer?
- Which correctly describes how data is written to and erased from flash memory?
- In charge-trap cells, widely used in 3D NAND, which material is commonly used for the layer that stores charge?
- Which correctly describes the thermal oxidation of heavily doped polycrystalline silicon (polysilicon)?
Related terms
Threshold voltage 3D NAND Charge-trap cell Thermal oxidation 6T SRAM cell Fowler-Nordheim tunneling Garbage collection NAND flash memory Nonvolatile memory NOR flash memory