Memory programming for a phase change memory cell

Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a...

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Hauptverfasser: BREITWISCH MATTHEW J, SHARMA MAYANK, KARIDIS JOHN P, MITTELHOLZER THOMAS, CHIRAS STEFANIE R, CHEEK ROGER W, ELFADEL IBRAHIM M, FRANCESCHINI MICHELE M, LASTRAS-MONTANO LUIS A
Format: Patent
Sprache:eng
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Zusammenfassung:Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a memory cell. For phase change memory, an adaptive reset pulse and one or more annealing pulses are selected based on a desired resistance range. Reading the resistance value of the memory cell can provide feedback to determine adjustments in an overall pulse application strategy. The statistical model and a look up table can be used to select and modify pulses. Adaptively updating the statistical model and look up table may reduce the number of looping iterations to shift the resistance value of the memory cell into the desired resistance range.