Patent ID: 9070439
Filing Date: 2015-06-30
Classification: G11C

Abstract:
1. An electronic device comprising: a programmable resistive element comprising at least a first state and a second state, wherein the programmable resistive element is configured to allow switching from the second state into the first state in response to a signal comprising at least a predefined level; and a circuitry for providing signals below the predefined level, wherein the circuitry is configured to provide a switch signal to the programmable resistive element, wherein the switch signal causes switching from the first into the second state, wherein the programmable resistive element further comprises a third state and a memory material such that the second and the third state comprise both high ohmic states of the memory material with different resistances, and wherein the programmable resistive element further comprises a fourth state, and wherein the circuitry is configured to provide a further switch signal to switch from the first state into the fourth state, wherein the fourth state is irreversible in that the circuitry is unable to provide a signal to switch from the fourth state into the first state or into the third state.