The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicroControllerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision1.1.This application note describes a demonstration program that has been written for the DK3200 hardwaredemonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to workwith the device, using the HID class as a ready-made device driver for the USB connection.IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can executecode from one memory while erasing and programming the other. Product firmware updates in thefield can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)using this unique architecture. For In-Application-Programming (IAP), all code is updated through theMCU. The main advantage for the user is that the firmware can be updated remotely. The target applicationruns and takes care on its own program code and data memory.IAP is not the only method to program the firmware in μPSD devices. They can also be programmed usingIn-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. Withthis, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, anywhere, even when completely uncommitted.Both methods take place with the device in its normal hardware environment, soldered to a printed circuitboard. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amountof resident code to receive the service commands, and to perform the desired operations.
標(biāo)簽： Demonstration 3200 USB for
上傳時(shí)間： 2014-02-27
上傳用戶(hù)：zhangzhenyu
This application note shows how to write an Inter Integrated Circuit bus driver (I²C) for the Philips P90CL301micro-Controller.It is not only an example of writing a driver, but it also includes a set of application interface software routines toquickly implement a complete I²C multi-master system application.For specific applications the user will have to make minimal changes in the driver program. Using the drivermeans linking modules to your application software and including a header-file into the application sourceprograms. A small example program of how to use the driver is listed.The driver supports i.a. polled or interrupt driven message handling, slave message transfers and multi-mastersystem applications. Furthermore, it is made suitable for use in conjunction with real time operating systems, likepSOS+.
標(biāo)簽： routines driver P90 301
上傳時(shí)間： 2013-11-23
上傳用戶(hù)：weixiao99
The P90CL301 is a highly integrated 16/32 bit micro-Controller especially suitable for applications requiring lowvoltage and low power consumption. It is fully software compatible with the 68000. Furthermore, it provides bothstandard as well as advanced peripheral functions on-chip.One of these peripheral functions is the I2C bus. This report describes worked-out driver software (written in C) toprogram the P90CL301 I2C interface. It also contains interface software routines offering the user a quick start inwriting a complete I2C system application.
上傳時(shí)間： 2014-01-06
上傳用戶(hù)：氣溫達(dá)上千萬(wàn)的
基于P87 C591的CAN總線(xiàn)系統(tǒng)智能節(jié)點(diǎn)設(shè)計(jì)Design of CAN System Intelligent Node Based on P87C591 給出了基于帶CAN控制器的單片8位微控制器P87C591的智能節(jié)點(diǎn)的硬件電路及軟件結(jié)構(gòu)，詳細(xì)介紹了設(shè)計(jì)中的難點(diǎn)及實(shí)現(xiàn)過(guò)程中應(yīng)注意的問(wèn)題。關(guān)鍵詞:CAN總線(xiàn);智能節(jié)點(diǎn) Abstract:A h ardc ircuita nds oftw arec onfigurationo fth ei ntelligentnode based on a microController with CAN Controller P87C591 arepresented.E speciallyt hec ruxi nd esigninga ndt hep roblemst hatshould be paid attention in realizing are discussed in details.Keyw ords:C AN;in telligentn ode CA N 總線(xiàn) 是德國(guó)Bosch從20世紀(jì)80年代初為解決現(xiàn)代汽車(chē)中眾多的控制與測(cè)試儀器之間的數(shù)據(jù)交換而開(kāi)發(fā)的一種串行數(shù)據(jù)通信協(xié)議，它是一種多主總線(xiàn)，通信介質(zhì)可以是雙絞線(xiàn)、同軸電纜或光導(dǎo)纖維。由于CAN總線(xiàn)具有較強(qiáng)的糾錯(cuò)能力，支持差分收發(fā)，因而適合高噪聲環(huán)境。并具有較遠(yuǎn)的傳輸距離，適用于許多領(lǐng)域的分布式測(cè)控系統(tǒng)。目前已在工業(yè)自動(dòng)化、建筑物環(huán)境控制、醫(yī)療設(shè)備等許多領(lǐng)域得到廣泛的應(yīng)用。CAN已成為國(guó)際標(biāo)準(zhǔn)化組織IS011898標(biāo)準(zhǔn)。
標(biāo)簽： P87C591 CAN 總線(xiàn)系統(tǒng) 智能節(jié)點(diǎn)
上傳時(shí)間： 2013-10-30
上傳用戶(hù)：xymbian
提出了一個(gè)由AT89C52單片機(jī)控制步進(jìn)電機(jī)的實(shí)例。可以通過(guò)鍵盤(pán)輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實(shí)時(shí)對(duì)步進(jìn)電機(jī)工作方式進(jìn)行設(shè)置, 具有實(shí)時(shí)性和交互性的特點(diǎn)。該系統(tǒng)可應(yīng)用于步進(jìn)電機(jī)控制的大多數(shù)場(chǎng)合。實(shí)踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進(jìn)電機(jī)控制器。關(guān)鍵詞: 單片機(jī); 步進(jìn)電動(dòng)機(jī); 直流固態(tài)繼電器; 實(shí)時(shí)控制Con trol System of Stepp ingMotor Ba sed on AT89C52 ChipM icrocomputerMENGWu2sheng, L ILiang (College of Automatization, Northwestern Polytechnical Unversity, Xipan 710072, China)ABSTRACT: A stepp ing motor control system based on AT89C52 chip microcomputer was described.The data can be inputwith keyboard, and stepp ingmotorwas controlled by these data. According to the demand, users can set the workingmodel of stepp ingmotor in real2time. This system can be widely used in stepp ing motor controlling. The p ractice showed that the performance of this system outdid the tradi tional stepp ing motor Controller.KEY WORDS: Chip microcomputer; Stepp ingmotor; DCSSR; Real2time control
標(biāo)簽： Control System ingMot Stepp
上傳時(shí)間： 2013-11-19
上傳用戶(hù)：leesuper
一種基于ST62單片機(jī)的稱(chēng)重顯示控制器A Weighing Display Controller Based on ST62 Single Chip Computer祛 FA(上海時(shí)博飛奧控制系統(tǒng)有限公司，上海201100)摘要在介紹了基于ST62單片機(jī)的基礎(chǔ)上，詳細(xì)描述了稱(chēng)重顯控制器的硬件設(shè)計(jì)和軟件設(shè)計(jì)思路。該控制器結(jié)構(gòu)簡(jiǎn)單、操作方便、抗擾能力強(qiáng)等優(yōu)點(diǎn);具有較好的推廣應(yīng)用價(jià)值。關(guān)鍵詞稱(chēng)重顯示控制儀ST62單片機(jī)硬件設(shè)計(jì)軟件設(shè)計(jì)Abstract Ont heb asiso fin torductiono fST 62s inglec hipc omputer,th ed esignc oncrptof h ardwarea nds oftwarefo rw eighingd isplayc ontorleris d escrbed.The controler features simple structure, ease operation, powerful capability of anti-interference, etc.，it is wealth to be promoted into practicalapplicationsKeywords We妙噸display0 引言ST62s inglec hip Hardwared esign Softwaer design備 份 振 蕩器，振蕩器保護(hù)電路，上電復(fù)位及低壓檢測(cè)復(fù)稱(chēng) 重 顯 示控制器是一種具有數(shù)字顯示、開(kāi)關(guān)量輸出、定值控制和通信功能的以微機(jī)為操作核心的稱(chēng)重控制裝置。它是電子衡器的重要基礎(chǔ)部件，直接影響電子衡器及電子稱(chēng)重系統(tǒng)的功能和性能。與合適的傳感器及承重傳力復(fù)位系統(tǒng)組合可組成配料秤、料斗秤、定值秤、平臺(tái)秤、汽車(chē)秤等，廣泛應(yīng)用于電力、化工、建筑、冶金、交通運(yùn)輸、食品、軍工等部門(mén)，是進(jìn)行自動(dòng)稱(chēng)重配料控制和生產(chǎn)過(guò)程自動(dòng)化必不可少的重要檢測(cè)、控制裝置。隨著 稱(chēng) 重 計(jì)量自動(dòng)化水平的提高，對(duì)稱(chēng)重顯示控制器的要求也越來(lái)越高。為實(shí)現(xiàn)低漂移、高穩(wěn)定，本控制器采用低漂移、高增益放大器AD620和高分辨率的A/D轉(zhuǎn)換器CS5550。為提高穩(wěn)定性和可靠性，采用集成度高的、抗干擾能力強(qiáng)的ST62單片機(jī)。
標(biāo)簽： ST 62 單片機(jī) 稱(chēng)重
上傳時(shí)間： 2013-10-29
上傳用戶(hù)：釣鰲牧馬
用單片機(jī)配置FPGA—PLD設(shè)計(jì)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
標(biāo)簽： FPGA PLD 用單片機(jī) 設(shè)計(jì)技巧
上傳時(shí)間： 2013-10-09
上傳用戶(hù)：a67818601
This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration circuitry. As a result, neither processor nor PROM needs to be fullydedicated to performing Spartan configuration.In particular, information is provided on how the idle processing time of an on-board Controller can be used to loadconfiguration data from an off-board source. As a result, it is possible to upgrade a Spartan design in the field by sending thebitstream over a network.
標(biāo)簽： Spartan XAPP FPGA 098
上傳時(shí)間： 2014-08-16
上傳用戶(hù)：adada
This application note describes how to build a system that can be used for determining theoptimal phase shift for a Double Data Rate (DDR) memory feedback clock. In this system, theDDR memory is controlled by a Controller that attaches to either the OPB or PLB and is used inan embedded microprocessor application. This reference system also uses a DCM that isconfigured so that the phase of its output clock can be changed while the system is running anda GPIO core that controls that phase shift. The GPIO output is controlled by a softwareapplication that can be run on a PowerPC® 405 or Microblaze™ microprocessor.
上傳時(shí)間： 2013-10-15
上傳用戶(hù)：euroford
The PLB BRAM Interface Controller is a module thatattaches to the PLB (Processor Local Bus).
上傳時(shí)間： 2013-10-27
上傳用戶(hù)：zoudejile
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