Patent ID: 6011717
Filing Date: 2000-01-04
Classification: G11C

Abstract:
An EEPROM, programmable and erasable by Fowler-Nordheim effect, organized in matrix form in N word lines and M bit lines, N and M being integers greater than one, and comprising:storage cells placed at intersections of the word lines and the bit lines and comprising floating-gate storage transistors with N type doping to store electrical states, the storage cells being grouped together in groups of K cells, K being an integer greater than one and less than M, the storage cells of a same group being connected to a same word line and to K distinct bit lines;first selection lines and control lines associated with the groups of cells to convey control potentials for programming, erasure and reading of the storage cells; andfor each group of storage cells, a first group selection transistor with P type doping and having a channel for connecting, through the channel, floating gates of the floating-gate storage transistors of a same group of cells to one of the control lines, wherein a control gate of the first group selection transistor is connected to one of the first selection lines when for programming, erasing and reading contents of the storage cells of the group of cells with which the first group selection transistor is associated.