{"id":8855,"date":"2018-12-20T14:29:29","date_gmt":"2018-12-20T06:29:29","guid":{"rendered":"https:\/\/www.attopsemi.com\/attopsemi-technology-attended-semisrael-2018-and-presented-a-talk-100-testable-otp-for-automotive\/"},"modified":"2023-06-19T10:20:34","modified_gmt":"2023-06-19T02:20:34","slug":"attopsemi-technology-attended-semisrael-2018-and-presented-a-talk-100-testable-otp-for-automotive","status":"publish","type":"post","link":"https:\/\/www.attopsemi.com\/zh-hant\/attopsemi-technology-attended-semisrael-2018-and-presented-a-talk-100-testable-otp-for-automotive\/","title":{"rendered":"Attopsemi Technology Attended SemIsrael 2018 and Presented a Talk &#8220;100% Testable OTP for Automotive&#8221;"},"content":{"rendered":"<p><strong>Hsinchu, Taiwan \u2013December 20, 2018<\/strong><\/p>\n<p>Attopsemi Technology attended SemIsrael on November 27, 2018 in Tel Aviv, Israel and provided a talk \u201c100% Testable OTP for Automotive.\u201d More than 40 semiconductor chip and IP companies worldwide joined this event that attracted several hundreds of attendees.<\/p>\n<p>In a well-received speech during the Technical Session, Shine Chung, Chairman of Attopsemi, presented the topic \u201c100% Testable OTP for Automotive.\u201d In the automotive IC market, high reliability and low defects are two crucial features to avoid malfunctions and loss of lives. High reliability means that a good part can still be maintained in a good condition after using for long time. Low defects mean any faulty parts should be screened out before shipping to customers. I-fuse\u2122 is a revolutionary \u201cnon-explosive\u201d fuse technology that can be programmed below thermal runaway and above electro-migration (EM) threshold. This is different from other kinds of fuse technologies which are \u201cexplosive\u201d during programming. On the contrary, I-fuse\u2122 programming follows the physics, which is based on heat generation, heat dissipation, and electro-migration. The reliability of Attopsemi\u2019s I-fuse\u2122 is guaranteed by physics.<\/p>\n<p>To ultimately achieve ZERO defect, OTP needs to be tested thoroughly to toss away every defective part. However, conventional OTP always struggled in a dilemma. Ideally, every OTP bit should be test programmed at least once to make sure bit can be programmable. Unfortunately, if that one bit has been programmed during test, the OTP macro cannot be used any more. Moreover since all bits will be read as 0 in a blank OTP, any internal blocks of OTP can not be tested if they are stuck at 0. If every bit cannot be fully test programmability, it would be nearly impossible to avoid yield loss when programming OTP in field.<\/p>\n<p>Fortunately, I-fuse\u2122 can solve the OTP testability issues completely. As we stated previously, I-fuse\u2122 programming is based on heat assistant electro-migration. If an initial I-fuse\u2122 resistance is tested below 400 ohm, for example, this I-fuse\u2122 can surely generate enough heat to be programmable. Furthermore, since I-fuse\u2122 program window will be characterized before being used, I-fuse\u2122 programming yield can be estimated very accurately and the program yield can be nearly 100%, if programmed within the provided spec. Finally, every I-fuse\u2122 functional block, such as I-fuse\u2122 cell, array, X\/Y-decoder, sense amplifier, control logic, and program circuits can be fully tested by generating a non-destructive programming state to make it temporary be read as 1. To achieve fake reading 1 for a blank OTP, we will apply a low voltage to VDDP pin in the program mode while reading this bit. With a low voltage applied in the selected bitline, the selected bit for \u201cprogram\u201d can be read as 1, instead of 0. As a result, many complicated SRAM-like of test patterns can be fully testable.<\/p>\n<p>\u201cAutomotive ICs always have a goal to achieve ZERO defect.\u201d explained by Shine Chung. \u201cZERO defect means no defect after shipping because of high cost for field return. Any defects should be fully tested and screened away before shipping. Therefore, testability is essential to reach this Holy Grail. Only I-fuse\u2122 among all OTP technologies can reach this goal.\u201d<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/static.designandreuse.com\/news_img18\/20181220_1.jpg\" alt=\"\" width=\"490\" height=\"364\" longdesc=\"https:\/\/static.designandreuse.com\/news_img18\/20181220_1.jpg\" \/><\/p>\n<p><em>Shine Chung, Chairman of Attopsemi (left) attended SemIsrael 2018 at Attopsemi\u2019s Booth in Israel.<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/static.designandreuse.com\/news_img18\/20181220_2.jpg\" alt=\"\" width=\"475\" height=\"346\" longdesc=\"https:\/\/static.designandreuse.com\/news_img18\/20181220_2.jpg\" \/><\/p>\n<p><em>Shine Chung, Chairman of Attopsemi<\/em><em>\u00a0provided a talk \u201c100% Testable OTP for Automotive.\u201d<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hsinchu, Taiwan \u2013December 20, 2018 Attopsemi Technology [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[104,110],"tags":[],"class_list":["post-8855","post","type-post","status-publish","format-standard","hentry","category-104","category-2018-zh-hant"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - 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