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Department of Electronics

Advanced Information Storage Practical 02

Atsufumi Hirohata

10:00 15/November/2013 Friday (P/Z 011)

Contents of Advanced Information Storage

Practicals : (1/2 marks in your mark) Analysis on magnetic & solid-state storages [Weeks 2 ~ 5, 10:00 ~ 12:00 Fri. (York JEOL Nanocentre), Weeks 6 ~ 10, 10:00 ~ 12:00 Fri. (P/Z 011)] Laboratory report to be handed-in to the General Office (Week 10).

Continuous Assessment : (1/2 marks in your mark) Assignment to be handed-in to the General Office (Week 7).

Demonstrator : Shuo Zhao

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NAND Flash Memory In 1986, Fujio Masuoka invented a NAND-type flash memory :

* http://www.wikipedia.org/

  High writing speed �

  Ideal for integration�

× No 1 byte high-speed read-out

× Flash erase for a unit block ( 1 ~ 10 kbyte ) only !�

NAND-Flash Writing and Erasing Operation Writing operation : Erasing operation :

* http://www.tdk.co.jp/techmag/knowledge/200705/index2.htm

Positive potential voltage

Ground Ground

Control gate

Floating gate

Source

Insulating layer

Drain

Ground

Positive

Ground

Positive

Positive

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Reading Operation “0” state : “1” state :

* http://www.tdk.co.jp/techjournal_e/vol01_ssd/contents05.htm

Cells, Pages and Blocks Flash memory blocks :

* http://www.tdk.co.jp/techjournal_e/vol01_ssd/contents06.htm

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Flash Memory Demonstrator Renesas RL78 / G14 board :

* http://documentation.renesas.com/doc/products/mpumcu/doc/rl78/r20ut2494eg0100_rpbrl78l12_demo_usermanual.pdf

Flash Memory Demonstrator Renesas RL78 / G14 components :

* http://documentation.renesas.com/doc/products/mpumcu/doc/rl78/r20ut2494eg0100_rpbrl78l12_demo_usermanual.pdf

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Getting Started Refer to Chapter 4 in the Manual :

* http://documentation.renesas.com/doc/products/mpumcu/doc/rl78/r20ut2494eg0100_rpbrl78l12_demo_usermanual.pdf

•  Software installation (see Chapter 6)

•  Software operation (Chapter 8)

•  Analogue / digital converter demonstration (Section 8.3)

•  Real time clock demonstration (Section 8.4)

→ Familiarise yourselves to the fundamental board operation.

•  Memory demonstration (Section 8.5)

→ Learn writing operation into the flash memory.

•  Low power demonstration (Section 8.6)

→ Learn low power consumption.

Discussion :

•  Summarise the fundamental board operation.

•  Summarise and discuss the writing operation.

•  Compare the temperatures between the normal and low-power operation modes.

Flash Memory Evaluation Download CrystalDiskMark <http://crystalmark.info/?lang=en> :

* http://crystalmark.info/?lang=en

Discussion :

•  Measure read / write speed of your own flash memory drives.

•  Compare the above speed with those for USB 1.0 ~ 3.0.

•  Discuss the development of the flash storages.

•  Software installation

•  Software operation (Chapter 8)

•  http://crystalmark.info/software/CrystalDiskMark/manual-en/MainWindow.html