Computer Science for IGCSE & O level - Hardware (Section 4 - No. 2)
What is the role of the tunnel oxide layer in a flash memory cell?
To insulate the floating gate.
To allow electrons to tunnel to and from the floating gate.
To provide structural support to the memory cell.
To control the voltage applied to the control gate.
Explication
The tunnel oxide allows electron tunneling for writing and erasing.