Patent ID: 7405971

Claim:
A semiconductor device comprising: a pair of non-volatile memory elements each including a first source electrode, a first drain electrode, a floating gate electrode and a control gate electrode, and capable of having a first threshold voltage or a second threshold voltage different from the first threshold voltage; a pair of read transistor elements each including a second source electrode, a second drain electrode and one of the floating gate electrodes as a gate electrode, and capable of having a first witching state or a second switching state different the first switching state according to the first or the second threshold voltages of the non-volatile memory elements, respectively; and a transmission circuit to transmit a signal generated from the read transistor elements according to the first or the second switching state of the read transistor elements, wherein the floating gate electrode of one of the pair of non-volatile memory elements is shared by one of the pair of read transistor elements, and the floating gate electrode of the other of the pair non-volatile memory elements is shared by the other of the pair of read transistor elements, and wherein the pair of read transistor elements are coupled in parallel to the transmission means.