Patent ID: 7839702

Claim:
A non-volatile register, comprising: a memory element positioned in at least one memory plane and including a first terminal, a second terminal, a conductive oxide including mobile oxygen ions, and an electrolytic tunnel barrier in contact with the conductive oxide, the conductive oxide and the electrolytic tunnel barrier are electrically in series with the first and second terminals; and a register logic fabricated on a substrate and operative to read data stored in the memory element during a read operation and to write data to the memory element during a write operation, the write operation operative to move a portion of the mobile oxygen ions between the conductive oxide and the electrolytic tunnel barrier to write the data, the at least one memory plane is fabricated directly above and in contact with the substrate, the register logic is electrically coupled with the first and second terminals of the memory element, the register logic including a biased reference electrically coupled with a ground voltage and operative to generate a reference signal on an output node, a comparator including a first input, a second input, and an output, the first input is electrically coupled with the second terminal of the memory element and the second input is electrically coupled with the output node of the biased reference, a first switch having a first output electrically coupled with the first terminal of the memory element, the first switch electrically coupled with a read enable signal, a write enable signal, a data signal, a read voltage, and a write voltage, a second switch having a second output electrically coupled with the second terminal of the memory element and the first input of the comparator, the second switch electrically coupled with the ground voltage, the read enable signal, the write enable signal, the data signal, and the write voltage.