Reference Current Iref Nrom Products Research And Failure Analysis

Flasn Marketing is expected better by memory factory at2012. Since the demand of NAND Flash should be increased rapidly at2012. To intensify occupy NAND Flasn Market, many fabs enhance improvement of product layout.This is profited from intelligent device demand incerased.Traditional Flash technology is using floating gate technology storage charge. Based on the charge existing in poly gate or not, to judge the storage information will be "0" or "1". Along with the shrink of CD, the traditional floating gate flash couldn’t satisfy the small node process requirement. So a new type flash product:charge-trapping flash gradually dive into application. This new device make use of the charge traping to storage data. The new product have upper storage capacility in stated size range, could shrink cell size, and could meet the demand of building in high density embeded mermory.Saifun is a provider of intellectual property (IP) solutions for the non-volatile memory (NVM) market. The company’s innovative Saifun NROM technology allows semiconductor manufacturers to deliver high performance, reliable products at a lower cost per megabit, with greater storage capacity, using a single process for all NVM applications. Saifun licenses its IP to semiconductor manufacturers who use this technology to develop and manufacture a variety of stand-alone and embedded NVM products. These include Flash memory for the telecommunications, consumer electronic, networking and automotive markets.The paper is for the discussion of NROM’s important parameter Ireference. It includes eight chapters. First chapter introduce the type of flash, application and development of NROM. Second chapter introduce NROM process flow.3th and4th chapter introduce NROM operation principle and educe the important paramenter:I reference, discuss the Iref definition and setup, this is the emphasis of the paper. At same time, compare the SLC and MLC’s operation principle. Following chapers introduce the WAT which affect manufacture of NROM product and two case for failure analysis. Finally, make a forecast of NROM:it provide a good solution for flash development, and when Nitride suffer limit, could consider new material replace it or advanced structure.