PICKIT™ 2 PROGRAMMER-TO-GO USER GUIDE The PICkit 2 Programmer-To-Go functionality allows a PIC MCU memory image to be downloaded into the PICkit 2 unit for later programming into a specific PIC MCU. No software or PC is required to program devices once the PICkit 2 unit is set up for Programming-To-Go. A USB power source for the PICkit 2 is all that is needed.
標(biāo)簽： PROGRAMMER-TO PICKIT 8482
上傳時間： 2013-10-29
上傳用戶：ca05991270
基于HT47C20L的R-F型低電壓八位Mask單片機(jī) HT47C20L 是8 位高性能精簡指令集單片機(jī)。單指令周期和兩級流水線結(jié)構(gòu)，使其適合高速應(yīng)用的場合。特別適用于帶LCD 的低功耗產(chǎn)品，例如：電子計算機(jī)、時鐘計數(shù)器、游戲產(chǎn)品、電子秤、玩具、溫度計、濕度計、體溫計、電容測量儀，以及其它掌上型LCD 產(chǎn)品，尤其是電池供電的系統(tǒng)。
上傳時間： 2013-11-13
上傳用戶：assef
基于HT45R37V的低功耗C/R-F型八位OTP單片機(jī) HT45R37V 是一款低功耗C/R-F 型具有8 位高性能精簡指令集的單片機(jī)，專門為需要VFD 功能的產(chǎn)品而設(shè)計。作為一款C/R-F 型的單片機(jī)，它可以連接9 個外部電容型或電阻型傳感器，并把它們的電容值或電阻值轉(zhuǎn)換成相應(yīng)的頻率進(jìn)行處理。此外，單片機(jī)帶有內(nèi)部A/D 轉(zhuǎn)換器，能夠直接與模擬信號相連接，且它還集成了一個雙通道的脈沖寬度調(diào)節(jié)器，用于控制外部的馬達(dá)和LED 燈等。這款單片機(jī)是專門為VFD 產(chǎn)品應(yīng)用而設(shè)計的，它能直接驅(qū)動VFD 面板。
上傳時間： 2013-10-16
上傳用戶：packlj
基于HT45R37的低功耗C/R-F型八位OTP單片機(jī) HT45R37 是一款低功耗C/R-F 型具有8 位高性能精簡指令集的單片機(jī)。作為一款C/R-F 型的單片機(jī)，它可以連接16 個外部電容/電阻式傳感器，并把它們的電容值或電阻值轉(zhuǎn)換成相應(yīng)的頻率進(jìn)行處理。此外，單片機(jī)帶有內(nèi)部A/D 轉(zhuǎn)換器，能夠直接與模擬信號相連接，且它還集成了雙通道的脈沖寬度調(diào)節(jié)器，用于控制外部的馬達(dá)和LED 燈等。
上傳時間： 2013-11-23
上傳用戶：chenlong
HT45R35VC/R-F型八位OTP單片機(jī) HT45R35V 是一款C/R-F 型具有8 位高性能精簡指令集的單片機(jī)，專門為需要VFD 功能的產(chǎn)品而設(shè)計。 秉承HOLTEK MCU 一般特性，該單片機(jī)帶有暫停和喚醒功能，振蕩器選項等等，這些都保證使用者的應(yīng)用只需極少的外部元器件便可實現(xiàn)。這款單片機(jī)專門為直接與VFD 面板相連的VFD 應(yīng)用而設(shè)計。集成C/R-F 功能，外加功耗低、性能良好、I/O 使用靈活、成本低等優(yōu)勢，使這款單片機(jī)可以廣泛應(yīng)用于VFD 相關(guān)產(chǎn)品中，例如家電定時產(chǎn)品，各種消費(fèi)產(chǎn)品，子系統(tǒng)控制器，其他家電應(yīng)用等方面。
上傳時間： 2013-11-07
上傳用戶：semi1981
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C-buses that connect to the same downstreamI2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are usedto select one master at a time. Either master at any time can gain control of the slavedevices if the other master is disabled or removed from the system. The failed master isisolated from the system and will not affect communication between the on-line masterand the slave devices on the downstream I2C-bus.
標(biāo)簽： master C-bus 9541 PCA
上傳時間： 2013-10-09
上傳用戶：3294322651
基于PIC單片機(jī)的脈沖電源:設(shè)計了一種金屬凝固過程用脈沖電源。該電源采用PIC16F877作為主控芯片，實現(xiàn)對窄脈沖電流幅值的檢測，以及時電流脈沖幅值根據(jù)模糊PID算法進(jìn)行閑環(huán)控制。使用結(jié)果表明：該電源的輸出脈沖波形良好，電流幅值穩(wěn)定，滿足合金材料凝固過程的工藝要求且運(yùn)行穩(wěn)定可靠。關(guān)鍵詞：脈沖電源；PIC16F877單片機(jī)；模糊PID；閑環(huán)控制 Abstract：A kind of pulse power supply was designed which uses in the metal solidification process ．．I11is power supply used PIC16F877 to take the master control chip reali on to the narrow pulse electric current peak-to-peak value examination，carried on the closed-loop control to the electric current pulse peak-to-peak value basis fuzzy PID algorithm．The use result indicated ，this power supply output se profile is good，and the electric current peak-to-p~k value is stable，It satisfies the alloy material solidification process the technological requirement and movement stable reliable，Key words：p se po wer supply；PIC16F877single-chip microcontroller；f r PID；closed-loop control
上傳時間： 2013-10-27
上傳用戶：xcy122677
SPMC75F2413A在三相交流感應(yīng)電機(jī)的開環(huán)V/F控制的應(yīng)用:系統(tǒng)輸入電源電壓為AC110V/AC220V，經(jīng)全波整流后供系統(tǒng)使用。系統(tǒng)使用Sunplus公司的SPMC75F2413A產(chǎn)生AC三相異步電機(jī)的VVVF控制所需的SPWM信號,并完成系統(tǒng)控制。使用三菱公司的智能功率模塊PS21865實現(xiàn)電機(jī)的功率驅(qū)動。在AC220V輸入時，系統(tǒng)最大能驅(qū)動1.5KW的負(fù)載。系統(tǒng)的變頻區(qū)間為2Hz~200Hz。
標(biāo)簽： 2413A F2413 SPMC 2413
上傳時間： 2013-11-06
上傳用戶：924484786
The 87C576 includes two separate methods of programming theEPROM array, the traditional modified Quick-Pulse method, and anew On-Board Programming technique (OBP).Quick Pulse programming is a method using a number of devicepins in parallel (see Figure 1) and is the traditional way in which87C51 family members have been programmed. The Quick-Pulsemethod supports the following programming functions:– program USER EPROM– verify USER EPROM– program KEY EPROM– program security bits– verify security bits– read signature bytesThe Quick-Pulse method is quite easily suited to standardprogramming equipment as evidenced by the numerous vendors of87C51 compatible programmers on the market today. Onedisadvantage is that this method is not well suited to programming inthe embedded application because of the large number of signallines that must be isolated from the application. In addition, parallelsignals from a programmer would need to be cabled to theapplication’s circuit board, or the application circuit board wouldneed to have logic built-in to perform the programming functions.These requirements have generally made in-circuit programmingusing the modified Quick Pulse method impractical in almost all87C51 family applications.
上傳時間： 2013-10-21
上傳用戶：xiaozhiqban
The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8Kbytes of Flash programmable and erasable read only memory (PEROM). The deviceis manufactured using Atmel’s high-density nonvolatile memory technology and iscompatible with the industry-standard 80C51 and 80C52 instruction set and pinout.The on-chip Flash allows the program memory to be reprogrammed in-system or by aconventional nonvolatile memory programmer. By combining a versatile 8-bit CPUwith Flash on a monolithic chip, the Atmel AT89C52 is a powerful microcomputerwhich provides a highly-flexible and cost-effective solution to many embedded controlapplications.
上傳時間： 2013-11-10
上傳用戶：1427796291
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