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
多遠程二極管溫度傳感器-Design Considerations for pc thermal management Multiple RDTS (remote diode temperature sensing) provides the most accurate method of sensing an IC’s junction temperature. It overcomes thermal gradient and placement issues encountered when trying to place external sensors. PCB component count decreases when using a device that provides multiple inputs.Better temperature sensing improves product performance and reliability. Disk drive data integrity suffers at elevated temperatures. IBM published an article stating that a 5°C rise in operating temperature causes a 15% increase in the drive’s failure rate. The overall performance of a system can be improved by providing a more accurate temperature measurement of the most critical devices allowing them to run just a few degrees hotter.The LM83 directly senses its own temperature and the temperature of three external PN junctions. One is dedicated to the CPU of choice, the other two go to other parts of your system that need thermal monitoring such as the disk drive or graphics chip. The SMBus-compatible LM83 supports SMBus timeout and logic levels. The LM83 has two interrupt outputs; one for user-programmable limits and WATCHDOG capability (INT), the other is a Critical Temperature Alarm output (T_CRIT_A) for system power supply shutdown.
標(biāo)簽： Considerat Design 遠程 二極管
上傳時間： 2014-12-21
上傳用戶：ljd123456
The CC1101 is a low-cost sub- 1 GHztransceiver designed for very low-powerwireless applications. The circuit is mainlyintended for the ISM (Industrial, Scientific andMedical) and SRD (Short Range Device)frequency bands at 315, 433, 868, and 915MHz, but can easily be programmed foroperation at other frequencies in the 300-348MHz, 387-464 MHz and 779-928 MHz bands.CC1101 is an improved and code compatibleversion of the CC1100 RF transceiver. Themain improvements on the CC1101 include:
標(biāo)簽： 1110 CC 片上系統(tǒng) 方案
上傳時間： 2013-11-12
上傳用戶：363186
Abstract: This application note discusses a design for a phantom antenna power-supply system compatible with theDigital Satellite Equipment Control (DiSEqC) communication standard, using the MAX16948 automotive dual, highvoltageLDO/switch. The presented application circuit provides a remote antenna power supply and also enables onewaycommunication from the radio head unit to the remote antenna. This system architecture offers flexibility inDiSEqC tone-burst frequency choice (100Hz to 30kHz), enabling users the ability to select the best frequency for theirapplication.
標(biāo)簽： 數(shù)字衛(wèi)星 控制 兼容 供電系統(tǒng)設(shè)計
上傳時間： 2013-11-17
上傳用戶：fnhhs
本軟件是關(guān)于MAX338, MAX339的英文數(shù)據(jù)手冊：MAX338, MAX339 8通道/雙4通道、低泄漏、CMOS模擬多路復(fù)用器 The MAX338/MAX339 are monolithic, CMOS analog multiplexers (muxes). The 8-channel MAX338 is designed to connect one of eight inputs to a common output by control of a 3-bit binary address. The dual, 4-channel MAX339 is designed to connect one of four inputs to a common output by control of a 2-bit binary address. Both devices can be used as either a mux or a demux. On-resistance is 400Ω max, and the devices conduct current equally well in both directions. These muxes feature extremely low off leakages (less than 20pA at +25°C), and extremely low on-channel leakages (less than 50pA at +25°C). The new design offers guaranteed low charge injection (1.5pC typ) and electrostatic discharge (ESD) protection greater than 2000V, per method 3015.7. These improved muxes are pin-compatible upgrades for the industry-standard DG508A and DG509A. For similar Maxim devices with lower leakage and charge injection but higher on-resistance, see the MAX328 and MAX329.
上傳時間： 2013-11-12
上傳用戶：18711024007
PVAuthor v3.0MP4轉(zhuǎn)換工具軟件介紹 PVAuthor 3.0是歷史最悠久的MPEG-4公司之一的PacketVideo公司所開發(fā)的產(chǎn)品,PVAuthor 3.0是非常成熟的編碼工具，其目標(biāo)是將串流技術(shù)應(yīng)用于移動通信器件，支持AVI、MPG的視頻流轉(zhuǎn)換成手機支持的MP4媒體，因此,PVAuthor及其相伴的PVPlayer是現(xiàn)時移動通信中不可缺少的工具。 1、復(fù)制pvauthor到安裝程序目錄； 一般為：*:\Program Files\PacketVideo\PVAuthor 2、復(fù)制pvaactvx.dll到system32目錄； Window 2000/NT: *:\WinNT\system32 Window 98/XP: *:\Windows\system32 注:*為你所安裝的系統(tǒng)盤符和文件安裝盤符!!!
標(biāo)簽： PVAuthor 3.0 MP 轉(zhuǎn)換
上傳時間： 2013-10-24
上傳用戶：hustfanenze
全能音頻格式轉(zhuǎn)換器為歌迷朋友提供了優(yōu)秀的音頻格式轉(zhuǎn)換解決方案，可以幫您實現(xiàn)不同音頻格式的轉(zhuǎn)換，從視頻中提取音頻轉(zhuǎn)換為MP3、WMA、WAV、MP2、AAC、AMR等音頻格式。 全能音頻格式轉(zhuǎn)換器可以從視頻中提取音頻，支持幾乎所有的視頻格式包括AVI、MPEG、WMV、ASF、FLV、MKV、MP4、3GP、H.264、DAT、VOB、MTS、F4V、MOD、TOD、DV、M2TS等視頻格式。 您可以在轉(zhuǎn)換輸出音頻時，自由設(shè)置音頻采樣率、音頻品質(zhì)等音頻參數(shù)，指定時間轉(zhuǎn)換輸出喜歡的音頻片段。提供免費下載旭日全能音頻格式轉(zhuǎn)換器，來體驗一下高質(zhì)量的音頻轉(zhuǎn)換。
標(biāo)簽： 音頻格式轉(zhuǎn)換器
上傳時間： 2014-12-31
上傳用戶：Aidane
PVAuthor v3.0MP4轉(zhuǎn)換工具軟件介紹 PVAuthor 3.0是歷史最悠久的MPEG-4公司之一的PacketVideo公司所開發(fā)的產(chǎn)品,PVAuthor 3.0是非常成熟的編碼工具，其目標(biāo)是將串流技術(shù)應(yīng)用于移動通信器件，支持AVI、MPG的視頻流轉(zhuǎn)換成手機支持的MP4媒體，因此,PVAuthor及其相伴的PVPlayer是現(xiàn)時移動通信中不可缺少的工具。 1、復(fù)制pvauthor到安裝程序目錄； 一般為：*:\Program Files\PacketVideo\PVAuthor 2、復(fù)制pvaactvx.dll到system32目錄； Window 2000/NT: *:\WinNT\system32 Window 98/XP: *:\Windows\system32 注:*為你所安裝的系統(tǒng)盤符和文件安裝盤符!!!
標(biāo)簽： PVAuthor 3.0 MP 轉(zhuǎn)換
上傳時間： 2014-12-31
上傳用戶：lz4v4
國外游戲開發(fā)者雜志1998年第九期配套代碼，包含Mitchell, Tatro, 和Bullard關(guān)于direct3d的文章中使用到方法的例子代碼，并且還有一個avi文件作為例子
上傳時間： 2015-01-05
上傳用戶：685
一個攝像機的程序，可以監(jiān)視當(dāng)前屏幕的內(nèi)容，生成avi文件，推薦下載
上傳時間： 2014-01-09
上傳用戶：tedo811
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