51 Research and Design, Electronic Engineers website - Embedded Systems, MCU, DSP, EDA, Test and Measurement, Components, Communications, Power, Microelectronics, Semiconductors

Monday, December 7th, 2009 at 21:05 | No comments

Categories: Embedded system

Tags: embedded Linux, NAND

Short Content:     NAND and NOR are in the present market two kind of main non-easy accidents to save the technology to be opposite say in NOR, the NAND structure can provide the extremely high unit density, may achieve the high packing density, and reads in with the erasing speed is very quick, simultaneously, NAND dodges the cost which saves to be lower than NOR to dodge saves. Therefore the NAND connection is freely special, the management is complex, the reading ...

Wednesday, December 2nd, 2009 at 10:45 | No comments

Categories: Embedded system

Tags: FLASH, NAND, S3C2440

Short Content:     In the current each kind of embedded system development design, the storage module is the indispensable important aspect. NOR and NAND are in the present market two kind of main non-easy accidents to save the technology. The Nor-flash memory's capacity is small, the writing speed to be slow, but because its stochastic reading speed is quick, therefore in the embedded system, often applies in the procedure code memory. The Nor-flash memory's internal structure decided that it is not ...

Monday, November 23rd, 2009 at 21:09 | No comments

Categories: Embedded system

Tags: FLASH, JFFS2, NAND, uClinux

Short Content: Writes in front     Now linux supports to the mtd equipment is much better, far I at that time (2.5 probably years ago) had not done that complex, here must send the original text, is because wants to provide a reference mentality to the beginner, introduced that I to the linux study understanding's entire process, hoped has to everybody profits from the significance. But, suggested that uses the newest mtd patch, new edition's mtd has included to the 2k page ...

Monday, November 10th, 2008 at 06:49 | No comments

Categories: Storage

Tags: NAND

Short Content: Compares many years ago, present's motion expense electronic installation structure is complex, the function is rich, can save the massive musics, the picture and the video frequency content. What is gratifying, memory system's architecture can adapt these recent data intensity application. For example, was suitable in large capacity memory high performance-to-price ratio compact NAND dodges saves substitutes NOR which in the handset, the MP3 player and the digital camera used to dodge saves with other non-volatility memory unit.  Along ...

Sunday, November 9th, 2008 at 05:49 | No comments

Categories: Storage

Tags: ARM9, development, Embedded, FLASH, NAND

Short Content: 1 NAND FLASH NAND writes the speed to be quick, the chip area is small, specially large capacity causes its superiority to be obvious. The page is in the NAND basic storage unit, a page is generally 512 B (also has 2 kB each page large page NAND FLASH), many page composition block. In different memory's block page countless same, usually is quite common by 16 pages or 32 pages. The block capacity rating formula is quite simple, is in ...

Friday, November 7th, 2008 at 18:49 | No comments

Categories: Storage

Tags: FLASH, memory, NAND

Short Content: The abstract embedded system's mass data save on its F1ash chip. According to the Flash component's intrinsic property, constructs one to suit manages NAND Flash memory's FAT filing system, and elaborates the concrete design concept. This system improved the FAT table and the FRT table memory way, lengthened memory's service life, enhanced the stability.Key word NAND Flash memory FATl6 filing system FAT table FRT table     NAND the Flash memory is one kind of data accuracy non-ideal component, easy to ...

Tuesday, November 4th, 2008 at 05:49 | No comments

Categories: Storage

Tags: Embedded, FLASH, memory, NAND, power failure restoration

Short Content: Abstract NAND Flash by its superiority and so on large capacity, low price becomes the new favorite which rapidly the embedded system saves, therefore the above filing system research day by day is also widespread, this article introduced briefly commonly used NAND Flash filing system YAFFS, and aims at YAFFS restores the aspect in the even loss and the power failure to carry on the online test. While gives the test result, studies the embedded software test plan and the ...

Tuesday, November 4th, 2008 at 00:49 | No comments

Categories: Storage

Tags: Embedded, FLASH, NAND

Short Content: The abstract take Samsung NAND Flash component K9F1208 as an example, contrasts NAND Flash and the NOR Flash similarities and differences; Introduced that large capacity NAND Flash in the uPSD3234A enlargement mode monolithic integrated circuit system's application, has completed the hardware interface design and the software design, and gives the hardware connection diagram and the subprogram code.Key word NAND Flash uPSD3234A monolithic integrated circuit embedded system 1 NAND Flash and NOR Flash    Dodges saves (Flash Memory), because it has the ...

Sunday, November 2nd, 2008 at 23:49 | No comments

Categories: Storage

Tags: FLASH, K9F1208, NAND, uPSD3234A

Short Content: 1NAND FlaSh and NOR Flash     Dodges saves (Flash Memory), because it has the non-volatility, the electricity to be possible, to be possible to duplicate programs as well as high density, low power loss characteristics and so on cleaning, widely is applied in data storage equipment and so on handset, MP3, digital camera, notebook. NAND Flash and NOR Flash are in the present market two kind of main non-easy accidents to save the chip. Compares with NOR Flash, NAND Flash ...