Patent ID: 8929127
Filing Date: 2015-01-06
Classification: G11C

Abstract:
1. A current generator for generating current in a nonvolatile memory device, the current generator comprising: a current supplying circuit configured to gradually and incrementally change a level of a sample current from one discrete level to another; and a calibration circuit coupled to the current supplying circuit, wherein the calibration circuit includes a sample bit cell configured to receive the sample current, and wherein the calibration circuit further includes a feedback signal generating unit configured to generate and transmit a feedback signal to the current supplying circuit indicating a resistance state change current of the sample bit cell, wherein the current supplying circuit is configured to determine the resistance state change current of the sample bit cell based on the feedback signal obtained from the calibration circuit, and wherein the sample bit cell is configured to receive a discrete level of the sample current to change a resistance state of the sample bit cell.