Erasable and programmable non-volatile cell

1. An erasable and programmable non-volatile cell, comprising:

an n-channel transistor having a source, a drain and a gate;

a floating capacitor having a floating gate and a control gate, said floating gate being connected to said gate of said n-channel transistor; and

circuitry for detecting the state, whether erased or programmed, of the cell,

wherein said circuitry for detecting the state of the cell comprises a p-channel transistor having a source, a drain and a gate, said p-channel transistor being complementary to said n-channel transistor and said gate of said p-channel transistor being connected to said floating gate

wherein an n-well diffusion region of said p-channel transistor is the control gate of said floating capacitor.

2. The cell of claim 1 , wherein the floating gate and the gates of the first and second transistors are embodied as a single polymer layer.

3. The cell of claim 1 ,

wherein the n-channel transistor is adapted to program a data value into the cell by having appropriate programming voltages applied to its gate, source and drain, and

wherein the p-channel transistor is adapted to read the data value from the cell by having appropriate read voltages applied to its gate, source and drain.

4. The cell of claim 3 , wherein the drain of the p-channel transistor is adapted to float when the data value is programmed into the cell, and wherein the drain of the n-channel transistor is adapted to float when the data value is read from the cell.