Patent ID: 7920426

Claim:
A two terminal programmable non-volatile device situated on a substrate comprising: a floating gate comprised of polysilicon; a first n-type diffusion region coupled to a first terminal; and a second n-type diffusion region coupled to a second terminal; and wherein the second n-type diffusion region overlaps a sufficient areal portion of said floating gate to permit a threshold voltage of the device to be controlled by a coupling ratio determined by said areal portion and a voltage applied to such second n-type diffusion region; an n-type channel coupling said first n-type diffusion region and second n-type diffusion region; wherein said n-type channel is adapted to have a low resistance when the device is in an unprogrammed state, and a high resistance when the device is in a programmed state; further wherein the device can be placed into a programmed state using a programming voltage applied to said first terminal of said first n-type diffusion region and second terminal of said second n-type diffusion region such that charge can be imparted to said floating gate through areal capacitive coupling.