產(chǎn)品型號：VK2C23A/B 產(chǎn)品品牌：VINKA/永嘉微/永嘉微電 封裝形式：LQFP64/48 裸片:DICE（邦定COB）/COG（邦定玻璃用） 產(chǎn)品年份：新年份 聯(lián) 系 人：許碩 原廠直銷，工程服務(wù)，技術(shù)支持，價格最具優(yōu)勢！QT394 VK2C23A/B概述： VK2C23A/B是一個點(diǎn)陣式存儲映射的LCD驅(qū)動器，可支持最大224點(diǎn)（56SEGx4COM）或者最大416點(diǎn)（52SEGx8COM）的LCD屏。單片機(jī)可通過I2C接口配置顯示參數(shù)和讀寫顯示數(shù)據(jù)，也可通過指令進(jìn)入省電模式。其高抗干擾，低功耗的特性適用于水電氣表以及工控儀表類產(chǎn)品。 特點(diǎn)： ★ 工作電壓 2.4-5.5V ★ 內(nèi)置32 kHz RC振蕩器 ★ 偏置電壓（BIAS）可配置為1/3、1/4 ★ COM周期（DUTY）可配置為1/4、1/8 ★ 內(nèi)置顯示RAM為56x4位、52x8位 ★ 幀頻可配置為80Hz、160Hz ★ 省電模式（通過關(guān)顯示和關(guān)振蕩器進(jìn)入）
標(biāo)簽： VK2C I2C LCD 23 抗干擾 高穩(wěn)定 接口 控制 驅(qū)動IC
上傳時間： 2022-04-16
上傳用戶：2937735731
產(chǎn)品型號：VK2C21A/B/C/D 產(chǎn)品品牌：VINKA/永嘉微/永嘉微電 封裝形式：SOP28/24/20/16 裸片:DICE（邦定COB）/COG（邦定玻璃用） 產(chǎn)品年份：新年份 聯(lián) 系 人：許碩 原廠直銷，工程服務(wù)，技術(shù)支持，價格最具優(yōu)勢！QT446 VK2C21A/B/C/D概述： VK2C21是一個點(diǎn)陣式存儲映射的LCD驅(qū)動器，可支持最大80點(diǎn)（20SEGx4COM）或者最大128點(diǎn)（16SEGx8COM）的LCD屏。單片機(jī)可通過I2C接口配置顯示參數(shù)和讀寫顯示數(shù)據(jù)，也可通過指令進(jìn)入省電模式。其高抗干擾，低功耗的特性適用于水電氣表以及工控儀表類產(chǎn)品。 特點(diǎn)： ★ 工作電壓 2.4-5.5V ★ 內(nèi)置32 kHz RC振蕩器 ★ 偏置電壓（BIAS）可配置為1/3、1/4 ★ COM周期（DUTY）可配置為1/4、1/8 ★ 內(nèi)置顯示RAM為20x4位、16x8位 ★ 幀頻可配置為80Hz、160Hz ★ 省電模式（通過關(guān)顯示和關(guān)振蕩器進(jìn)入）
標(biāo)簽： VK2C 21 LCD 應(yīng)用于 抗干擾 環(huán)境 液晶驅(qū)動
上傳時間： 2022-06-07
上傳用戶：2937735731
j1939 附錄a附錄b
標(biāo)簽： j1939
上傳時間： 2022-06-09
上傳用戶：
產(chǎn)品型號：VK2C21A/B/C/D 產(chǎn)品品牌：VINKA/永嘉微/永嘉微電 封裝形式：SOP28/24/20/16 裸片:DICE（邦定COB）/COG（邦定玻璃用） 產(chǎn)品年份：新年份 聯(lián) 系 人：許碩 Q Q：191 888 5898 聯(lián)系手機(jī)：18898582398（信） 原廠直銷，工程服務(wù)，技術(shù)支持，價格最具優(yōu)勢！QT459 VK2C21A/B/C/D概述： VK2C21是一個點(diǎn)陣式存儲映射的LCD驅(qū)動器，可支持最大80點(diǎn)（20SEGx4COM）或者最大128點(diǎn)（16SEGx8COM）的LCD屏。單片機(jī)可通過I2C接口配置顯示參數(shù)和讀寫顯示數(shù)據(jù)，也可通過指令進(jìn)入省電模式。其高抗干擾，低功耗的特性適用于水電氣表以及工控儀表類產(chǎn)品。 特點(diǎn)： ★ 工作電壓 2.4-5.5V ★ 內(nèi)置32 kHz RC振蕩器 ★ 偏置電壓（BIAS）可配置為1/3、1/4 ★ COM周期（DUTY）可配置為1/4、1/8 ★ 內(nèi)置顯示RAM為20x4位、16x8位 ★ 幀頻可配置為80Hz、160Hz ★ 省電模式（通過關(guān)顯示和關(guān)振蕩器進(jìn)入）
標(biāo)簽： VK2C21 VK2C21A VK2C21B VK2C21C VK2C21D LCD抗干擾段碼屏驅(qū)動 段碼屏驅(qū)動抗干擾
上傳時間： 2022-06-09
上傳用戶：2937735731
描述了NTC使用B值計(jì)算出實(shí)際溫度與輸出的電壓之間的關(guān)系。
標(biāo)簽： ntc計(jì)算
上傳時間： 2022-06-15
上傳用戶：
BC20-TE-B NB-Iot 評估板評估板原廠原理圖V1.2。完整對應(yīng)實(shí)物裝置。
上傳時間： 2022-06-17
上傳用戶：
ASR M08-B設(shè)置軟件 V3.2 arduino 2560+ASRM08-B測試程序 arduino UNO+ASRM08-B測試程序語音控制臺燈電路圖及C51源碼(不帶校驗(yàn)碼) 繼電器模塊設(shè)置。 ASR M08-B是一款語音識別模塊。首先對模塊添加一些關(guān)鍵字，對著該模塊說出關(guān)鍵字，串口會返回三位的數(shù)，如果是返回特定的三位數(shù)字，還會引起ASR M08-B的相關(guān)引腳電平的變化。【測試】①打開“ASR M08-B設(shè)置軟件 V3.2.exe”。②選擇“串口號”、“打開串口”、點(diǎn)選“十六進(jìn)制顯示”。③將USB轉(zhuǎn)串口模塊連接到語音識別模塊上。接線方法如下：語音模塊TXD --> USB模塊RXD語音模塊RXD --> USB模塊TXD語音模塊GND --> USB模塊GND語音模塊3V3 --> USB模塊3V3（此端為3.3V電源供電端。）④將模塊的開關(guān)撥到“A”端，最好再按一次上面的大按鈕（按一次即可，為了確保模塊工作在正確的模式）。⑤對著模塊說“開燈”、“關(guān)燈”模塊會返回“0B”、“0A”，表示正常(注意：0B對應(yīng)返回值010，0B對應(yīng)返回值010，返回是16進(jìn)制顯示的嘛，設(shè)置的時候是10進(jìn)制設(shè)置的)。
標(biāo)簽： ASR M08-B
上傳時間： 2022-07-06
上傳用戶：aben
All inputs of the C16x family have Schmitt-Trigger input characteristics. These Schmitt-Triggers are intended to always provide proper internal low and high levels, even if anundefined voltage level (between TTL-VIL and TTL-VIH) is externally applied to the pin.The hysteresis of these inputs, however, is very small, and can not be properly used in anapplication to suppress signal noise, and to shape slow rising/falling input transitions.Thus, it must be taken care that rising/falling input signals pass the undefined area of theTTL-specification between VIL and VIH with a sufficient rise/fall time, as generally usualand specified for TTL components (e.g. 74LS series: gates 1V/us, clock inputs 20V/us).The effect of the implemented Schmitt-Trigger is that even if the input signal remains inthe undefined area, well defined low/high levels are generated internally. Note that allinput signals are evaluated at specific sample points (depending on the input and theperipheral function connected to it), at that signal transitions are detected if twoconsecutive samples show different levels. Thus, only the current level of an input signalat these sample points is relevant, that means, the necessary rise/fall times of the inputsignal is only dependant on the sample rate, that is the distance in time between twoconsecutive evaluation time points. If an input signal, for instance, is sampled throughsoftware every 10us, it is irrelevant, which input level would be seen between thesamples. Thus, it would be allowable for the signal to take 10us to pass through theundefined area. Due to the sample rate of 10us, it is assured that only one sample canoccur while the signal is within the undefined area, and no incorrect transition will bedetected. For inputs which are connected to a peripheral function, e.g. capture inputs, thesample rate is determined by the clock cycle of the peripheral unit. In the case of theCAPCOM unit this means a sample rate of 400ns @ 20MHz CPU clock. This requiresinput signals to pass through the undefined area within these 400ns in order to avoidmultiple capture events.For input signals, which do not provide the required rise/fall times, external circuitry mustbe used to shape the signal transitions.In the attached diagram, the effect of the sample rate is shown. The numbers 1 to 5 in thediagram represent possible sample points. Waveform a) shows the result if the inputsignal transition time through the undefined TTL-level area is less than the time distancebetween the sample points (sampling at 1, 2, 3, and 4). Waveform b) can be the result ifthe sampling is performed more than once within the undefined area (sampling at 1, 2, 5,3, and 4).Sample points:1. Evaluation of the signal clearly results in a low level2. Either a low or a high level can be sampled here. If low is sampled, no transition willbe detected. If the sample results in a high level, a transition is detected, and anappropriate action (e.g. capture) might take place.3. Evaluation here clearly results in a high level. If the previous sample 2) had alreadydetected a high, there is no change. If the previous sample 2) showed a low, atransition from low to high is detected now.
標(biāo)簽： Signal Input Fall Rise
上傳時間： 2013-10-23
上傳用戶：copu
mp3設(shè)計(jì)程序資料，采用c語言編寫。 README file for yampp-3 source code 2001-05-27 This is the current state of the yampp-3 source code, 2001-05-27. This code is intended to run on Rev. B of the yampp-3 PCB, but can ofcourse be used on compatible systems as well. It still uses the "old" song selection system as the yampp-2. However, the disk handling routines has improved a lot and the obviosly, the new VS1001 handling has been put in. The codesize is almost at it s maximum at 1F40 bytes. A .ROM file is included if you don t have the compiler set up. For now, the documentation is in the code
標(biāo)簽： mp3 設(shè)計(jì)程序
上傳時間： 2015-04-13
上傳用戶：小碼農(nóng)lz
Rotating shafts experience a an elliptical motion called whirl. It is important to decompose this motion into a forward and backward whil orbits. The current function makes use of two sensors to generate a bi-directional spectrogram. The method can be extended to any time-frequency distribution ％ ％ compute the forward/backward Campbell/specgtrogram ％ ％ INPUT: ％ y (n x 2) each column is measured from a different sensor ％ /////// ％ __ ％ |s1| y(:,1) ％ |__| ％ __ ％ / \ ________|/ ％ | | | s2 |/ y(:,2) ％ \____/ --------|/ ％ ％ Fs Sampling frequnecy ％ ％ OUTPUT: ％ B spectrogram/Campbel diagram ％ x x-axis coordinate vector (time or Speed) ％ y y-axis coordinate vector (frequency [Hz])
標(biāo)簽： experience elliptical decompose important
上傳時間： 2015-06-23
上傳用戶：372825274
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