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

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 ...

Wednesday, November 25th, 2009 at 18:51 | No comments

Categories: Embedded system

Tags: FLASH, uClinux

Short Content: 1 Flash type and technical characteristic    Flash mainly divides into NOR and the NAND two kinds. Below makes a more detailed comparison to the two.1.1 performance comparisons    Flash dodges saves the right and wrong volatile memory, may carry on to the storage location block scratches writes with programs again. Before any Flash component carries on the write operation, to carry out the cleaning first. The NAND component execution cleaning operation is very simple; But NOR requests before carrying on ...

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 23rd, 2009 at 04:03 | No comments

Categories: Embedded system

Tags: FLASH, VC5402

Short Content: before 1 programming completes produces the .OUT document, selection menu Project/Build Option…, fills in Complier Process Version 548, then the recompilation produces the OUT document.2 place the TI hex500 document the C plate or under other symbol root directory (supposition places under the C plate flash_boot)3 OUT document copying this document under.4   Writes a .cmd document document as follows (take lcd.out as example): Opens document lcd.out with the memorandum, will see the following procedure. lcd.out     - a- map ioport2.mxp- ...

Friday, November 6th, 2009 at 20:28 | No comments

Categories: Embedded system

Tags: DSP, FLASH

Short Content: Abstract: Uses one simple feasible method, in TI Corporation TMS320C6X DSP under integrated development environment CCS2.0, realizes through the JTAG mouth to DSP exterior Flash may scratch writes memory's online programming; Writes about in DSP the user data document fever exterior Flash, and board tests many times in TMS320C6711 on the DSP passes.Key word: Embedded system DSP Flash JTAG online programs CCS2.0IntroductionIn uses the TI digital signal processor (DSP) inlays puts the type hardware system development to complete, the ...

Sunday, November 1st, 2009 at 07:16 | No comments

Categories: Embedded system

Tags: FLASH, JFFS2, NOR, uClinux

Short Content:          Embedded system along with Internet development, but obtains the widespread application in each domain, takes the embedded application the core, embedded Linux is favoring day by day by its free software characteristic by the people. Linux has the essence to be small, the efficiency is high, merits and so on source code opening, but also connotation complete TCP/IP network protocol, therefore is suitable for embedded system's application. But takes moves specially in not having the MMU microprocessor's embedded ...

Friday, October 23rd, 2009 at 05:53 | No comments

Categories: Embedded system

Tags: FLASH, interruption, SRAM

Short Content:        I am from-line saw this application note, feels is alright, the share gives everybody. I have translated a point sketchily, added the annotation which point understood. Following no longer has translated, everybody wants to continue the words which looked to the Philip website high and low.       Uses simple interrupt processing which LPC2106 Timer 1 carries on. In the demonstration code Timer1 divides into FIQ and IRQ, the user may moves these codes from Flash or SRAM.      ...

Wednesday, October 21st, 2009 at 17:57 | No comments

Categories: Embedded system

Tags: 39VF160, FLASH

Short Content: 39VF16016 Mbit Multi-Purpose FlashSeptember 2001 ABOUT THE SOFTWAREThis application note provides software driver examples for 39VF160,16 Mbit Multi-Purpose Flash, that can be used in any microprocessor based system.  Software driver examples used in this document.nbsputilize two programming languages: (a) high - level “C” for broad platform support and (b) optimized x86 assembly language. In many cases, software driver routines can be inserted “as is” into the main body of code being developed by the system software developers. Extensive comments ...

Wednesday, October 21st, 2009 at 14:22 | No comments

Categories: Embedded system

Tags: FLASH, ROM

Short Content:     Intel Flash chip i28f160, i28f320:     i28F320B: 64*64K,64 the blocks,4M space, each block 64K, first 64K is composed of 8 8*8K small blocks. Each Black may scratch independently writes (life cycle) above 100,000 times     Flash operation general step:        in the flash read-write operation, reads should be very simple, is the same with RAM, writes on the complex spot.        Intel TE28F320C3 flash is the 4M space       the flash space, divides many block, Intel TE28F320C3 flash ...

Wednesday, October 21st, 2009 at 07:18 | No comments

Categories: Embedded system

Tags: DSP, FLASH

Short Content: Abstract: Introduced in TI Corporation TMS320VC33 in the DSP application system, memory realizes the online programming method through the JTAG mouth to DSP the exterior FLASH, after having given the DSP system adds the electricity the autoloading movement. The FLASH memory is one kind of high density, the non-volatility electricity may scratch writes the memory, the reserves is big, the easy to operate, is suitable for the low power loss, the high performance system. In high speed DSP application ...