Abstract: There are differences between the operation of low-frequency AC transformers and electronic transformersthat supply current to MR16 lamps, and there are also differences in the current draw for MR16 halogen lamps andMR16 LED lamps. These contrasts typically prevent an MR16 LED lamp from operating with most electronictransformers. This article explains how a high-brightness (HB) LED driver optimized for MR16 lamps will allow LEDlamps to be compatible with most electronic transformers.A similar version of this article appeared on Display PLUs, July 7, 2012 and in German in Elektronikpraxis, October 1,2012.
標(biāo)簽： LED MR 16 驅(qū)動(dòng)
上傳時(shí)間： 2013-10-14
上傳用戶：playboys0
介紹了MPC555與CS8900A擴(kuò)展以太網(wǎng)的硬件設(shè)計(jì)圖。以NUCLUES PLUs操作系統(tǒng)為基礎(chǔ)，介紹了網(wǎng)卡軟件驅(qū)動(dòng)程序的編制，給出了以太網(wǎng)協(xié)議包嵌入NUCLEUS PLUs操作系統(tǒng)的實(shí)現(xiàn)方法。 Abstract: The Ethernet extension hardware design of MPC555 and CS8900A are introduced,and the software driven program based on NUCLEUS PLUs operation system and the technique that Ethernet protocol embedded in NUCLEUS PLUs real operation system are discussed.
上傳時(shí)間： 2013-10-23
上傳用戶：xiehao13
1 FEATURES· Single chip LCD controller/driver· 1 or 2-line display of up to 24 characters per line, or2 or 4 lines of up to 12 characters per line· 5 ′ 7 character format PLUs cursor; 5 ′ 8 for kana(Japanese syllabary) and user defined symbols· On-chip:– generation of LCD supply voltage (external supplyalso possible)– generation of intermediate LCD bias voltages– oscillator requires no external components (externalclock also possible)· Display data RAM: 80 characters· Character generator ROM: 240 characters· Character generator RAM: 16 characters· 4 or 8-bit parallel bus or 2-wire I2C-bus interface· CMOS/TTL compatible· 32 row, 60 column outputs· MUX rates 1 : 32 and 1 : 16· Uses common 11 code instruction set· Logic supply voltage range, VDD - VSS: 2.5 to 6 V· Display supply voltage range, VDD - VLCD: 3.5 to 9 V· Low power consumption· I2C-bus address: 011101 SA0.
標(biāo)簽： 2116 PCF LCD 驅(qū)動(dòng)器芯片
上傳時(shí)間： 2013-11-08
上傳用戶：laozhanshi111
The PCA9674/74A provide general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode PLUs (Fm+) family.
上傳時(shí)間： 2013-10-28
上傳用戶：linyao
Quartus II 中文教程 您現(xiàn)在閱讀的是 Quartus II 簡(jiǎn)介手冊(cè)。 Altera® Quartus® II 設(shè)計(jì)軟件是適合單芯片可編程系統(tǒng) (SOPC) 的最全面的設(shè)計(jì)環(huán)境。 如果您以前用過(guò)MAX+PLUs® II 軟件、其它設(shè)計(jì)軟件或 ASIC 設(shè)計(jì)軟件，并且準(zhǔn)備改用Quartus II 軟件，或如果您對(duì) Quartus II 軟件有了一些了解但想進(jìn)一步了解它的功能，那么本手冊(cè)非常適合您。本手冊(cè)針對(duì)的讀者是 Quartus II 軟件的初學(xué)者，它概述了可編程邏輯設(shè)計(jì)中Quartus II 軟件的功能。 不過(guò)，本手冊(cè)并不是 Quartus II 軟件的詳盡參考手冊(cè)。 相反，本手冊(cè)只是一本指導(dǎo)書(shū)，它解釋軟件的功能以及顯示這些功能如何幫助您進(jìn)行 FPGA 和 CPLD 設(shè)計(jì)。 本手冊(cè)按一系列特定的可編程邏輯設(shè)計(jì)任務(wù)來(lái)組織內(nèi)容。 無(wú)論是使用 Quartus II 圖形用戶界面、其它 EDA 工具還是 Quartus II 命令行界面，本手冊(cè)都將為您介紹最適合設(shè)計(jì)流程的功能。第一章概述了主要圖形用戶界面、EDA 工具和命令行界面設(shè)計(jì)流程。 接下來(lái)的每一章開(kāi)頭都介紹了該章的具體用途，并對(duì)每個(gè)任務(wù)流加以概述。 它顯示了如何將 Quartus II 軟件與現(xiàn)有的 EDA 工具和命令行設(shè)計(jì)流程集成在一起。另外，手冊(cè)還向您推薦了有效使用 Quartus II 軟件的其它可用資源，例如Quartus II 聯(lián)機(jī)幫助和 Quartus II 聯(lián)機(jī)教程、應(yīng)用程序說(shuō)明、白皮書(shū)以及Altera 網(wǎng)站提供的其它文檔和資源。跟隨本手冊(cè)學(xué)習(xí) Quartus II 軟件，了解此軟件如何幫助您提高效率并縮短設(shè)計(jì)周期，如何與現(xiàn)有可編程邏輯設(shè)計(jì)流程集成以及如何快速有效地達(dá)到設(shè)計(jì)、性能和時(shí)間要求。
上傳時(shí)間： 2013-12-22
上傳用戶：panpanpan
Nios 的用戶定義接口邏輯實(shí)例 有許多人問(wèn)我使用 Nios 的用戶定義接口邏輯怎么用，想了幾天決定設(shè)計(jì)一個(gè)實(shí)例來(lái)說(shuō)明。該例為一個(gè)使用 user to interface logic 設(shè)計(jì)的 PWM 實(shí)例，其中包括三個(gè)文件： PLUs32.v 是一個(gè)為 32bit nios 設(shè)計(jì)的 pwm 實(shí)例。 PLUs16.v 是一個(gè)為 16bit nios 設(shè)計(jì)的 pwm 實(shí)例。 test.s 是一個(gè)使用中斷調(diào)用 pwm 的匯編語(yǔ)言測(cè)試程序。以上模塊和程序均調(diào)試通過(guò)，并可穩(wěn)定工作。這里讓大家參考是使大家通過(guò)該例來(lái)真正理解 user to interface logic 設(shè)計(jì)方法，和nios 中通過(guò)匯編調(diào)用中斷的方法，所以超值喔。另外熱烈歡迎大家的指導(dǎo)。 注：在設(shè)計(jì) Nios 時(shí)，將你調(diào)用的 user to interface logic 插件重命名為 PLUs_0，這樣我的 test.s 可不作任何改動(dòng)，你就可用示波器通過(guò) nios 的 PLUs 管腳觀察到一個(gè)要求的輸出。
上傳時(shí)間： 2013-11-15
上傳用戶：cc1915
The PCA9670 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode PLUsfamily.The PCA9670 is a drop-in upgrade for the PCF8574 providing higher Fast-mode PLUs(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time andmore device addresses (64 versus 8) are available to allow many more devices on the buswithout address conflicts.
標(biāo)簽： Remote expand 9670 PCA
上傳時(shí)間： 2013-10-15
上傳用戶：stella2015
The PCA9671 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode PLUs(Fm+) family.The PCA9671 is a drop in upgrade for the PCF8575 providing higher I2C-bus speeds(1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, higherI2C-bus drive (30 mA versus 3 mA) so that many more devices can be on the bus withoutthe need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) thatsupports having all 25 mA LEDs on at the same time and more device addresses (64versus 8) to allow many more devices on the bus without address conflicts.
標(biāo)簽： Remote expan 9671 PCA
上傳時(shí)間： 2013-10-12
上傳用戶：laomv123
The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode PLUsfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode PLUs(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) that supports having all LEDs on at the same time and moredevice addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
標(biāo)簽： Remote expand 9672 PCA
上傳時(shí)間： 2013-10-23
上傳用戶：jasonheung
The PCA9673 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode PLUsfamily.The PCA9673 is a drop in upgrade for the PCF8575 providing higher Fast-mode PLUs(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(400 mA versus 100 mA) that supports having all 25 mA LEDs on at the same time andmore device addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
標(biāo)簽： Remote expan 9673 PCA
上傳時(shí)間： 2013-10-29
上傳用戶：wkchong
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