Ovonic Unified Memory

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  • Topic: Computer memory, Non-volatile memory, Flash memory
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OVONIC INOFIED MEMORY (OUM)

A Seminar Report On

OVONIC UNIFIED MEMORY (OUM)
Submitted by

Mr. Nishant K Patel (09EC082)
Internal Guide:

Asst. Prof. Jignesh Patoliya

V.T.Patel Department of Electronics & Communication Engineering

09EC082

Page 1

OVONIC INOFIED MEMORY (OUM)

CHAROTAR UNIVERSITY OF SCIENCE & TECHNOLOGY
CERTIFICATE
This is to certify that the Seminar entitled “OVONIC UNIFIED MEMORY (OUM)” is a bonafied report of the work carried out by Mr. Nishant Patel (09EC082) under the guidance and supervision for the submission of 2nd semester to Charotar Institute of Technology -Changa. , Gujarat.

To the best of my knowledge and belief, this work embodies the work of candidate themselves, has duly been completed, fulfills the requirement of the ordinance relating to the Bachelor degree of the university and is up to the standard in respect of content, presentation and language for being referred to the examiner.

Guided By:
Asst. Prof. Jignesh Patoliya

Head of Dept.
Prof. Jaymin Bhalani ELECTRONICS AND COMMUNICATION ENGINEERING

09EC082

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OVONIC INOFIED MEMORY (OUM)

ACKNOWLEDGEMENT

At this stage of my seminar, I take this opportunity to express my heartiest gratitude and thanks to my guide Asst. Prof. Jignesh Patoliya, for his valuable guidance and encouragement during each stage of my work. I would especially thank him, as they have helped me lot to present my seminar related work in a much better way. He always listens to problems patiently and suggests the best possible solution and especially thanks for his extensive comments on thesis write up. Starting off, I am indebted to our Head of Department Prof. Jaymin Bhalani who also helped me to present my seminar related work in a much better way, and also as a Head of Department who gave me an opportunity to elect an appropriate subject for my seminar. I would especially thank him, as he helps me while facing problems and suggests the best possible solutions. He is very supportive and heartily acknowledged for providing laboratory support. Last but not the least; I would like to thank my seniors, friends, and especially my parents for their support and acknowledgement.

Mr. Nishant Patel (09EC082)

09EC082

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OVONIC INOFIED MEMORY (OUM)

ABSTRACT
Nowadays, digital memories are used in each and every fields of day-to-day life. Semiconductors form the fundamental building blocks of the modern electronic world providing the brains and the memory of products all around us from washing machines to super computers. But now we are entering an era of material limited scaling. Continuous scaling has required the introduction of new materials. Current memory technologies have a lot of limitations. The new memory technologies have got all the good attributes for an ideal memory. Among them Ovonic Unified Memory (OUM) is the most promising one. OUM is a type of nonvolatile memory, which uses chalcogenide materials for storage of binary data. The term “chalcogen” refers to the Group VI elements of the periodic table. “Chalcogenide” refers to alloys containing at least one of these elements such as the alloy of germanium, antimony, and tellurium, which is used as the storage element in OUM. Electrical energy (heat) is used to convert the material between crystalline (conductive) and amorphous (resistive) phases and the resistive property of these phases is used to represent 0s and 1s. To write data into the cell, the chalcogenide is heated past its melting point and then rapidly cooled to make it amorphous. To make it crystalline, it is heated to just below its melting point and held there for approximately 50ns, giving the atoms time to position themselves in their crystal locations. Once programmed, the memory state of the cell is determined by reading its resistance.

09EC082

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OVONIC INOFIED MEMORY (OUM)

INDEX
CHAPTER 1 INTRODUCTION…………………………………………………. 1

CHAPTER 2 2.1 REVIEW OF MEMORY...
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