Specifying the right reference and applying it correctly isa more difficult task than one might first surmise, consideringthat references are only 2- or 3-terminal devices.Although the word “accuracy” is most often spoken inreference to references, it is dangerous to use this wordtoo freely because it can mean different things to differentpeople. Even more perplexing is the fact that a referenceclassified as a dog in one application is a panacea inanother. This application note will familiarize the readerwith the various aspects of reference “accuracy” andpresent some tips on extracting maximum performancefrom any reference.
标签： 电压基准
上传时间： 2013-10-15
上传用户：liuwei6419
The 87LPC76X Microcontroller combines in a small package thebenefits of a high-performance microcontroller with on-boardhardware supporting the Inter-Integrated Circuit (I2C) bus interface.The 87LPC76X can be programmed both as an I2C bus master, aslave, or both. An overview of the I2C bus and description of the bussupport hardware in the 87LPC76X microcontrollers appears inapplication note AN464, Using the 87LPC76X Microcontroller as anI2C Bus Master. That application note includes a programmingexample, demonstrating a bus-master code. Here we show anexample of programming the microcontroller as an I2C slave.The code listing demonstrates communications routines for the87LPC76X as a slave on the I2C bus. It compliments the program inAN464 which demonstrates the 87LPC76X as an I2C bus master.One may demonstrate two 87LPC76X devices communicating witheach other on the I2C bus, using the AN464 code in one, and theprogram presented here in the other. The examples presented hereand in AN464 allow the 87LPC76X to be either a master or a slave,but not both. Switching between master and slave roles in amultimaster environment is described in application note AN435.The software for a slave on the bus is relatively simple, as theprocessor plays a relatively passive role. It does not initiate bustransfers on its own, but responds to a master initiating thecommunications. This is true whether the slave receives or transmitsdata—transmission takes place only as a response to a busmaster’s request. The slave does not have to worry about arbitrationor about devices which do not acknowledge their address. As theslave is not supposed to take control of the bus, we do not demandit to resolve bus exceptions or “hangups”. If the bus becomesinactive the processor simply withdraws, not interfering with themaster (or masters) on the bus which should (hopefully) try toresolve the situation.
上传时间： 2013-11-19
上传用户：shirleyYim
用单片机配置FPGA—PLD设计技巧 Configuration/Program Method for Altera Device Configure the FLEX Device You can use any Micro-Controller to configure the FLEX device–the main idea is clocking in ONE BITof configuration data per CLOCK–start from the BIT 0The total Configuration time–e.g. 10K10 need 15K byte configuration file•calculation equation–10K10* 1.5= 15Kbyte–configuration time for the file itself•15*1024*8*clock = 122,880Clock•assume the CLOCK is 4MHz•122,880*1/4Mhz=30.72msec
上传时间： 2013-10-09
上传用户：a67818601
Training embedded apps to process speech may be as easy as finding the right 8-bit micro. Don t let what Rodger has to say about using an ADPCM algorithm and PWM output to generate speech to go in one ear and out the other
标签： Training embedded process finding
上传时间： 2014-01-26
上传用户：plsee
/* Check_SST_39VF400A Check manufacturer and device ID /* CFI_Query CFI Query Entry/Exit command sequence /* Erase_One_Sector Erase a sector of 2048 words /* Erase_One_Block Erase a block of 32K words /* Erase_Entire_Chip Erase the contents of the entire chip /* Program_One_Word Alter data in one word /* Program_One_Sector Alter data in 2048 word sector /* Program_One_Block Alter data in 32K word block
标签： manufacturer Check_SST CFI_Query command
上传时间： 2013-12-15
上传用户：jjj0202
acm HDOJ 1051WoodenSticks Description: There is a pile of n wooden sticks. The length and weight of each stick are known in advance. The sticks are to be processed by a woodworking machine in one by one fashion. It needs some time, called setup time, for the machine to prepare processing a stick. The setup times are associated with cleaning operations and changing tools and shapes in the machine. The setup times of the woodworking machine are given as follows: (a) The setup time for the first wooden stick is 1 minute. (b) Right after processing a stick of length l and weight w , the machine will need no setup time for a stick of length l and weight w if l<=l and w<=w . Otherwise, it will need 1 minute for setup.
标签： WoodenSticks Description length wooden
上传时间： 2014-03-08
上传用户：netwolf
FuncPlotter is a combined Java application and applet for displaying two-dimensional plots of explicit functions in one variable (ie, FuncPlotter plots functions of the form y = f(x), where f(x) is composed from common mathematical operators).
标签： two-dimensional FuncPlotter application displaying
上传时间： 2015-12-16
上传用户：妄想演绎师
The Bad Beginning: A Terrible Tale Do you enjoy happy endings? If so, The Bad Beginning by Lemony Snicket is a book you’ll want to avoid. This is a story with a bad beginning, a bad middle and a bad ending. Why would anyone want to read such a thoroughly bad book? It’s all in good fun!
标签： Beginning The Bad Terrible
上传时间： 2013-12-28
上传用户：笨小孩
神经网络工具箱，包含SVM和NPA、"one-against-all" 、"one-against-one" 算法，有大量的例子。
上传时间： 2016-04-23
上传用户：xhz1993
Name Function --- --- --- --- --- --- Check_SST_39VF160 Check manufacturer and device ID CFI_Query CFI Query Entry/Exit command sequence Erase_Entire_Chip Erase the contents of the entire chip Erase_One_Sector Erase a sector of 2048 word Erase_One_Block Erase a block of 32K word Program_One_Word Alter data in one word Program_One_Sector Alter data in 2048 word sector Program_One_Block Alter data in 32K word block Check_Toggle_Ready End of internal program or erase detection using Toggle bit Check_Data_Polling End of internal program or erase detection using Data# polling
标签： manufacturer Check_SST Function CFI_Que
上传时间： 2013-12-21
上传用户：徐孺
