Feedback write method for programmable memory

摘要

An integrated circuit (10) includes an array of state-change devices (30), first (34) and second (32) decoder circuits for selecting a particular state-change device (52). A voltage source (36) is coupled to the first decoder circuit and sense circuitry (38) is coupled to the second decoder to receive an electrical parameter from the selected state-change device and to detect a particular value of the electrical parameter. A control circuit (40) is coupled to the voltage source, the first and second decoders, and the sense circuitry to select a first voltage from the voltage source to alter the selected state-change device and to select a second voltage from the voltage source when the sense circuitry detects the particular value of the electrical parameter.