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AT24C02 is provided by ATMEL, iic bus serial EEPROM (electronic eraser programmer read only memory). Its capacity is 2 kbit (256B) and its operating voltage is between 2.7 v "5.5v, the production process is CMOS.Generally, digital chips are GND and VCC in the lower left and upper right corner. Capacity Calculation Method: AT24Cxx: 01 "1024Capacity = xx * 1 kbit.Write process:The fixed part of the AT24C-series EEPROM chip is 1010, A2, A1, and A0 pins c
file seems to implement the get_ro function: [chenxibing @ localhost linux-2.6.27.8] $ grep mmc_host_ops-r Drivers/MMC/host/imxmmc. c: static const struct mmc_host_ops imxmci_ops = {Drivers/MMC/host/wbsd. c: static const struct mmc_host_ops wbsd_ops = {Drivers/MMC/host/tifm_sd.c: static const struct mmc_host_ops tifm_sd_ops = {Drivers/MMC/host/sdricoh_cs.c: static struct mmc_host_ops sdricoh_ops = {Drivers/MMC/host/OMA P. c: static const struct mmc_host_ops mmc_omap_ops = {Drivers/MMC/host/pxam
How to disable the Asus S550C touch screen in ubuntu I accidentally made a crack on the Asus S550C touch screen, which caused the screen to automatically click, seriously affecting the use. In windows, the touch screen can be directly disabled through the FN + F7 shortcut, but after the ubuntu system is changed, the shortcut key is no longer needed. After a while, I finally found a way to disable the touch screen through xinput. The specific steps are as follows: 1. Enter xinput on the termina
Serial Port operations include the java host computer Embedded c-host machine, and the java lower bitEnvironment 1: 1.1 Keil uVision4 Http://pan.baidu.com/s/1o6A331w1.2 STC Http://pan.baidu.com/s/1jGpCUTC 1.3 Myeclipse 8.5 Http://pan.baidu.com/s/1jGABEaM 1.4 jar package RXTX to be imported Http://pan.baidu.com/s/1ntwsvRr Copy rxtxParallel. dll and rxtxSerial. dll to the bin directory of the jdk directory. Copy RXTXcomm to the jdk \ jre \ lib \ ext directory. Finally, import the jar package RXTXc
several software:Keil micro vision (DevelopmentProgramGenerate binary files), STC-ISP (to the microcontroller download program ). Open Keil, create a new project, and select Atmel-> PP2. Right-click the new project and set it. Click "output", select "create HEX file", create a new C or assembly file, and write a simple program. Here we provide you with a C program for the Flow lamp: # Include # Include // The shift library function is included i
both design and manufacturing capabilities, and some companies only have one of them. In addition, design and manufacturing are inseparable because of technological issues. Even companies with only design capabilities must consider the production process of a third party when entrusting a third party for manufacturing; in turn, companies that only have the manufacturing capability must consider whether their manufacturing processes can meet the design requirements if they provide production ser
CPU card of jiqi company was a typical high and low. At that time, the main projects included: OrganizationsCodeCard, uses the Phillips CPU card; the industrial and commercial administration card uses the at88sc1604 of ATMEL; the SIM cards of China Telecom are all foreign manufacturers; most of the social security cards and driver management cards are used by Siemens sle4428, while the canteen Meal cards are generally used by Siemens SLE4442. Jiqi ha
on with "27" headers are EPROM (486 and less than 486 of the computer using the chip), while 28c010, 29c010, 29c020, 29c040, etc., are EEPROM, 29c010 is 128 K * 8, that is, 1 M bit Parallel EPROM, 29c010 is 128 K * 8 (1 M bit), 29c020 is 256 K * 8 (2 M bit) 29c040 is a 512 K * 8 (4 M bit) Flash ROM (586 and PII, piII BIOS chip ). Serial EEPROM is rare on the computer motherboard, and most of the manufacturers that provide these chips are MX, WINBOND, Atmel
parts network (http://www.icminer.com) 21. China PCB Technology Network (http://www.pcbtech.net) 22. PCB Information Network (http://www.pcbinfo.net) 23. EDA Forum China (http://www.edachina.com) 24. Programmable Logic Device (http://www.pld.com.cn) 25. China PCB World Information Network (http://www.pcbworld.net) 26. PCB design technology training network (http://pcb.imbchina.com) 27. PCB Club (http://www.pcb-info.net) 28. Electronic World (http://www.eleworld.com) 29. DSP engineer Community F
network configurationFigure 4 shows the configuration and information transmission process of the GPRS network. The terminal device is connected to the GPRS Modem in serial mode, and the GPRS Modem communicates with the GSM base station. In the figure, BTS is the receiving and sending system of the base station, BSc is the base station controller. Unlike circuit switching or data calling, the GPRS data group sends data from the base station to the sgsn node instead of connecting to the voice ne
At the seminar, the two schemes were completely different. One uses a general chip, such as DSP, arm9-and FPGA, and one uses a dedicated chip, such as a copy, scan, and fax integrated chip. The two solutions have their own advantages and disadvantages: The general-purpose chip has the following advantages: 1. It is easy to purchase chips. Not only depends on one model. Any MCU can. The nxp arm chip can be used, the Atmel chip can also be used, and the
AT45DB041B is 2.7-3.3 V 20 MHz AT45DB041 is 4.5-5.5 V 10 MHz (discontinued) AT45DB041 is a new flash chip of ATMEL. The chip has many advantages such as large capacity, fast read/write speed, and few peripheral circuits. More importantly, the chip can work at least 2.5 V, and the operating current is only 4mA, therefore, it has been widely used in mobile communication and portable applications. Chip working principle and hardware connection Data i
earlier versions, functions such as readb, writeb, readw, writew, readl, and writel are also provided in the kernel. Release:Iounmap () and release_mem_region () Feng nuiman, Harvard structure:The Harvard structure is a memory structure that separates program instruction storage from data storage. The central processor first reads the program instruction content in the program instruction memory, decodes the content, obtains the data address, and then reads the data in the corresponding data st
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Phillips's Mifare card is widely used in the market due to its high security. For example, we use bus cards, meal cards for schools and corporate canteens, etc. each slice has an independent key (six-byte password). During communication, the key must be verified before data can be read and written. its key technology is to use the triple-encryption DES algorithm for key verification (that is, the keys transmitted between the reader and the card are encrypted by random numbers ), unlike the early
\Eplan. Electric. p8.2.2.5.6360u \ESI. Visual-Environment.8.6 \Fekete. Fast. CBM. v4.7.3.751 \Schlumberger visage 2009.1 WINDOWS \Sidra. intersection. v5.1 Traffic Simulation Software \Solidace. builtworks.2010.v1.1.1.3131. x64 \Synopsys. VCS-MX.v2014.03.Linux32_64 2dvd \Thermal. desktop. v4.4.5flocad. And. radcad \ 284 \Edgecam 2014r1 2013r2 software most comprehensive video tutorial ebook \Mvtec Halcon 11.0 _ j \Rsoft component suite 2013.12 win 3366bit \ 285 \ANSYS Maxwell 16.02 x64 \Dnv pha
1 J-link V8 Firmware Burning InstructionsJ-link is used in the process, if the internal firmware is accidentally damaged or lost, please refer to the following procedure instructions, re-burn the Jlink firmware.1.1 Installing firmware burning software Please download the at91-isp download software at Atmel official website. Software: http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3883In the Web page that opens, download the sof
commonly used two, the author also used the two software for many years, there are many similarities. I mainly use mdk-arm To summarize how it is used, and if you use several other software, there may be some differences in some places. Mdk-arm meaning is based onARMMicrocontroller Development Tools (microcontroller Developer Kit), byKeilCompany Development,Mdk-armcontains industry-standardKeil Ccompiler, macro assembler, debugger, real-time kernel and other components. With the leading busines
I'm with Arduino, and why write this series of articlesArduino has been on fire for years, and it's not a new technology. If someone is not clear about what Arduino is, I'm sorry, please search by yourself, open any Wikipedia introduction or a fan of the series of articles, people introduced more than I know more comprehensive. I'm afraid I don't have to repeat it here.The first contact with Arduino was in 2008, then I know nothing about embedded development, just started to learn MCU, that is,
/* Project to create MCU selection, Atmel 89C55 microcontroller: stc15f104w function: 500M seconds Flash LED connection description: Led positive string 1K resistor connected to VCC, negative to MCU 8 feet p3.3*/#include 650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M02/78/0A/wKiom1Z0IyCTSEKqAADWnwn9KuA736.png "title=" stc15f get started. png "alt=" Wkiom1z0iyctsekqaadwnwn9kua736.png "/>This article is from the "Soul Bucket" blog, please be s
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