{"id":4788,"date":"2009-06-15T05:54:06","date_gmt":"2009-06-15T05:54:06","guid":{"rendered":"https:\/\/www.amitbhawani.com\/blog\/?p=4788"},"modified":"2009-06-15T05:54:06","modified_gmt":"2009-06-15T05:54:06","slug":"eeprom-memory","status":"publish","type":"post","link":"https:\/\/www.amitbhawani.com\/blog\/eeprom-memory\/","title":{"rendered":"What is EEPROM"},"content":{"rendered":"

EEPROM is a type of non volatile memory used in many modern electronic devices that wish to store memory for a specific amount of time, and also want it to be erased at given times. EEPROM or E2PROM is an acronym for Electrically Erasable Programmable Read Only Memory. Earlier Erasable Programmable Read Only Memory (EPROM) chips contained {or did not, if the manufacturer wished to make One Time Programmable (OTP) chips} a tiny quartz window that allowed Ultraviolet (UV) light to enter the chip and erase the non volatile memory stored in it. EEPROM data can be erased electrically (as the name itself suggests) by the phenomenon of field electron emission. This technique allows the ROM to retain its data consistently, and also be ready for a re-programming when needed, or an erasure if necessary.<\/p>\n

\"EEProm<\/a>EEPROM\u2019s were first designed by George Perlegos at Intel. In 1983 he designed an EPROM chip that had thin gate oxide layer atop the semiconductor layer so that it could erase its own data when a high voltage is passed through it, without the need of a UV source, i.e. without a quartz window specifically designed to erase the data. Though rudimentary, this design was exploited by him when he left to form his own Seeq Technology and developed the first on device charge pumps used for data erasure and re-programming that also developed a very high voltage from a low input voltage \u2013 the exact kind of device that would power and pre process an EEPROM\u2019s functions.<\/p>\n

EEPROM\u2019s are of both serial bus and parallel bus types and have typical instructions coded into them. Though they can be erased and programmed, the number of times this can be done is limited as the oxide re-writing layer can be easily destroyed by frequent erasure and re-programming. This is why EEPROM\u2019s are used in cell phone ROM\u2019s and BIOS coding chips which are not frequently formatted, and thus are safe from frequent reprogramming and the corresponding oxide layer destruction.<\/p>\n

EEPROM\u2019s also form the basis of Flash drives which are written and rewritten many times to be classified generally as EEPROM\u2019s. These drives function differently to allow for a safe way of storing and restoring data without harming the internal mechanisms and the semiconductors. Flash drives are optimised for a large number of cycles of storage and retrieval and most have a read-write cycle of a million times; enough for a lifetime of storage and retrieval.<\/p>\n","protected":false},"excerpt":{"rendered":"

EEPROM is a type of non volatile memory used in many modern electronic devices that wish to store memory for a specific amount of time, and also want it to be erased at given times. EEPROM or E2PROM is an acronym for Electrically Erasable Programmable Read Only Memory. Earlier Erasable Programmable Read Only Memory (EPROM) […]<\/p>\n","protected":false},"author":1,"featured_media":19246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1280],"tags":[],"class_list":{"0":"post-4788","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-what-is","8":"entry"},"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/12\/EEProm.jpg?fit=640%2C640&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":4839,"url":"https:\/\/www.amitbhawani.com\/blog\/unlock-iphone-turbo-sim\/","url_meta":{"origin":4788,"position":0},"title":"Unlock Apple iPhone 2G 3G with Turbo Sim","author":"Amit Bhawani","date":"June 30, 2009","format":false,"excerpt":"Ever heard of those Dual Sim based mobile phones which come with a feature of running 2 SIM cards in a single mobile phone handset. All the devices like HyperCard, HyperSim, China3GPP, StealthSim, MagicSIM etc come under this category where in the physical EEPROM device is actually installed over the\u2026","rel":"","context":"In "Apple"","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Unlock Apple iPhone 2G 3G Turbo Sim","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/Images\/U\/Unlock-iPhone-Dual-Sim-Card.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2186,"url":"https:\/\/www.amitbhawani.com\/blog\/samsung-i550\/","url_meta":{"origin":4788,"position":1},"title":"Samsung i550 Mobile Phone Review","author":"Amit Bhawani","date":"November 23, 2008","format":false,"excerpt":"The Samsung i550 is a revolutionary smartphone with all the fastest technology. It is offered in two slick colours: black and silver. The phone is slim with Pencil-thin keys and has luxurious feel to its design. It can easily be operated with one hand as it is only13.8mm thick, 53mm\u2026","rel":"","context":"In "Samsung Mobile Phones"","block_context":{"text":"Samsung Mobile Phones","link":"https:\/\/www.amitbhawani.com\/blog\/category\/samsung\/"},"img":{"alt_text":"Samsung i550","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/Images\/S\/samsung-i550\/Samsung-i550-1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2855,"url":"https:\/\/www.amitbhawani.com\/blog\/gps-picture-tracker\/","url_meta":{"origin":4788,"position":2},"title":"Find Exact Photo Location with Gisteq GPS Photo Tracker","author":"Amit Bhawani","date":"January 30, 2009","format":false,"excerpt":"This device will let you know exactly where you travelled and if you took some photos it will track down for you exactly where all your pictures were taken. Take the GiSTEQ PhotoTrackr with you on all your trips and utilize the included mapping software and latest Geo-Mapping technology, you\u2026","rel":"","context":"In "Gadget Reviews"","block_context":{"text":"Gadget Reviews","link":"https:\/\/www.amitbhawani.com\/blog\/category\/gadget-news\/"},"img":{"alt_text":"Gisteq Photo Tracker","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/Images\/G\/gisteq-photo-tracker\/Gisteq-Photo-Tracker.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2142,"url":"https:\/\/www.amitbhawani.com\/blog\/transcend-usb-card-reader\/","url_meta":{"origin":4788,"position":3},"title":"Transcend USB Card Reader Review","author":"Amit Bhawani","date":"November 20, 2008","format":false,"excerpt":"Transcend has launched a new USB Card Reader which is inspired with flash drives designs. The Design has a unbuilt USB Connector that allowes you for a quick data transfer from data cards or memory sticks in the speeds of 30MB\/s read and 18MB\/s write. Nowadays there are numerous memory\u2026","rel":"","context":"In "Gadget Reviews"","block_context":{"text":"Gadget Reviews","link":"https:\/\/www.amitbhawani.com\/blog\/category\/gadget-news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/12\/Transcend-USB-Card-Reader.png?fit=500%2C345&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3540,"url":"https:\/\/www.amitbhawani.com\/blog\/recover-deleted-photos-emails\/","url_meta":{"origin":4788,"position":4},"title":"Recover Deleted Photos, Emails & Files for Free","author":"Amit Bhawani","date":"March 8, 2009","format":false,"excerpt":"If you lose some of your most important files, emails or photos then its the most frustating moment because you have very\/no chances of recovering them back. But now you have many Data Recovery softwares which can be installed on your computer in order to recover the accidently deleted files.\u2026","rel":"","context":"In "Tips & Tweaks"","block_context":{"text":"Tips & Tweaks","link":"https:\/\/www.amitbhawani.com\/blog\/category\/tips-tweaks\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/12\/email-photos-recovery.jpg?fit=594%2C343&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/12\/email-photos-recovery.jpg?fit=594%2C343&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/12\/email-photos-recovery.jpg?fit=594%2C343&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":4967,"url":"https:\/\/www.amitbhawani.com\/blog\/sony-32gb-memory-stick-pro\/","url_meta":{"origin":4788,"position":5},"title":"Sony 32Gb Memory Stick Review & Photos","author":"Amit Bhawani","date":"July 14, 2009","format":false,"excerpt":"Sony has launched the highest capacity Memory Stick - Sony 32Gb Memory Stick Pro HG Duo which can help you in storing the maximum amount of data possible currently. Though the digital cameras support higher capacity disks but there are no sticks available which is the reason this product can\u2026","rel":"","context":"In "Gadget Reviews"","block_context":{"text":"Gadget Reviews","link":"https:\/\/www.amitbhawani.com\/blog\/category\/gadget-news\/"},"img":{"alt_text":"Sony 32Gb Memory Stick Pro","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/Images\/S\/Sony-32Gb-Memory-Stick.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/4788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/comments?post=4788"}],"version-history":[{"count":0,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/4788\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media\/19246"}],"wp:attachment":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media?parent=4788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/categories?post=4788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/tags?post=4788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}