Patent ID: 8942033
Filing Date: 2015-01-27
Classification: G11C

Abstract:
1. A driving stage for a phase change non-volatile memory device comprising: an output driving unit configured to supply an output driving current during programming of at least one memory cell of the phase change non-volatile memory device; a driving-control unit configured to receive an input current, and to generate a first control signal to control supply of the output driving current by said output driving unit so that the output driving current has a desired relation with the input current; a level-shifter element coupled between said driving-control unit and said output driving unit, and configured to determine a shift voltage of the first control signal for supplying to said output driving unit a second control signal, the second control signal being increased with respect to and being a function of the first control signal; and a calibration unit configured to update the shift voltage as the input current varies.