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Phase Change Technology

Phase Change Technology. in optical and electrical memory applications . Bologna 28-05-2012. Giuliano Marcolini. Classification of memories. Data type Analogic memories Digital memories Data retention Volatile memories Non-volatile memories Data access

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Phase Change Technology

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  1. PhaseChangeTechnology in optical and electricalmemoryapplications. Bologna 28-05-2012 Giuliano Marcolini

  2. Classificationofmemories • Data type • Analogicmemories • Digitalmemories • Data retention • Volatile memories • Non-volatilememories • Data access • Sequentalaccessmemories • Randomaccessmemories

  3. Classificationofmemories Analogic Memories

  4. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital

  5. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM

  6. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM Memory Card, SSD

  7. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM Memory Card, SSD Magnetic disk

  8. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM Memory Card, SSD Magnetic disk Opticalmemory

  9. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM Memory Card, SSD Magnetic disk Opticalmemory

  10. Opticalstorage:CD-rom

  11. Opticalstorage:CD-rom

  12. Phasechangematerials:

  13. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  14. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  15. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  16. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  17. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  18. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  19. Phasechangematerials: T [K] Tmelt Tglass Troom Time [sec]

  20. Opticalstorage:CD-RW

  21. Opticalstorage:DVD &Blu Ray

  22. CD vs DVD vs Blu-rayWriting 400 nm 700 nm

  23. CD vs DVD vs Blu-rayWriting 400 nm 700 nm

  24. CD vs DVD vs Blu-rayWriting 400 nm 700 nm

  25. Blu-Ray vs HD-DVD

  26. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile ROM,PROM,E(E)PROM PCM Memory Card, SSD FalshMemory PhaseChangeMemories Magnetic disk Opticalmemory

  27. PhaseChangeMemories R [Ω] ≈ 109Ω ≈ 105Ω

  28. PhaseChangeMemories:memorycell Top electrode PhaseChange Materials Resistor (heater) Bottomelectrode

  29. PhaseChangeMemories:memorycell Amorphous Cristalline I [A] time

  30. PhaseChangeMemories:cross-pointarray

  31. PhaseChangeMemories

  32. Classificationofmemories Analogic Memories volatile SRAM, DRAM Digital Non-volatile PCM FalshMemory Magnetic disk Opticalmemory

  33. Briefoverview:Static and Dynamic RAM SRAM DRAM

  34. Flash memorycell: Floatinggate transistor Vg Vs Vd

  35. Briefoverview:Flash memorycell Vg Vs Vd

  36. PCM vs Flash Flash PCM • Electriccharge • Physicalphases • Writetime≈ 10 µs • Writetime≈ 0.1 µs • Endurance ≈ 5000 cyclep.s. • Endurance ≈ 107cycle • Retention ≈ 50,10,5,2 yr • Retention≈ 300 yr (at 85°) • Low radiationres. • High radiationres.

  37. Questions ?

  38. Thankyou and goodbye !

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