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LAN9254 + SAME54 MCU 從站設(shè)計?1.支持2/3個port口的EtherCat Slave控制器，并內(nèi)置有8個FMMU 和8個SyncManagers; 并有8KB的更大的DPRAM存儲資源；?2. 8/16bit總線，支持和大多數(shù)8/16bit以及32bit的host MCU通訊； ?3. 內(nèi)部集成了支持HP Auto-MDIX的以太網(wǎng)PHY芯片； ?4. 支持Wake on Lan以太網(wǎng)遠(yuǎn)程喚醒技術(shù)；兼容EtherCat P協(xié)議； ?5. 具有低功耗工作模式，可以允許系統(tǒng)進(jìn)入睡眠模式以節(jié)省更多功耗，直到被Master訪問； ?6. 支持線纜診斷技術(shù)； ?7. 支持1.8V~3.3V的靈活可變的IO電壓，省去需要外加Voltage shifter芯片的成本； ?8. 多功能GPIO，可以配置為Local Bus，SPI, PWM，通用GPIO等多種接口功能； ?9. 工業(yè)級溫度范圍，最高可以支持105度工業(yè)溫度要求；
標(biāo)簽：
mcu
lan9254
ethercat從站
上傳時間：
2021-11-09
上傳用戶：
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C10018_RTL8201CP-VD-LF_2012-11-22.PDFSINGLE-CHIP/SINGLE-PORT
10/100M FAST ETHERNET PHYCEIVER
(With Auto Crossover)
DATASHEET
標(biāo)簽：
rtl8201cp
上傳時間：
2022-01-13
上傳用戶：xsr1983
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The PW2606B is a front-end over voltage and over current protection device. It achieves wide inputvoltage range from 2.5VDC to 40VDC. The over voltage threshold can be programmed externally orset to internal default setting. The low resistance of integrated power path nFET switch ensures betterperformance for battery charging system applications. It can deliver up to 1A current to satisfy thebattery supply system. It integrates the over-temperature protection shutdown and auto-recoverycircuit with hysteresis to protect against over current events
標(biāo)簽：
pw2606b
上傳時間：
2022-02-11
上傳用戶：
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The PW2228A is a high efficiency single inductor Buck-Boost converter which can supply theload current up to 1.5A. It provides auto-transition between Buck and Boost Mode. The PW2228Aoperates at 2.4MHz switching frequency in CCM. DC/DC converter operates at Pulse-Skipping Modeat light load. The output voltage is programmable using an external resistor divider, or is fixed to3.3V internally. The load is disconnected from the VIN during shutdown.The PW2228A is available in TDFN3X3-10 package.
標(biāo)簽：
pw2228a
上傳時間：
2022-02-11
上傳用戶：
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首先下載軟件，解壓軟件，安裝在程序中找到SEGGER,選里面的J-FLASH，進(jìn)入界面，剛開始的那個界面可以忽略，不用建project也可以；單擊菜單欄的“Options---Project settings”打開設(shè)置，進(jìn)行jlink配置;正在General選項，選擇“USB”，一般都是默認(rèn)配置，確認(rèn)一下即可;然后在CPU選項，選擇芯片型號，先選擇“Device”才能選擇芯片型號，芯片型號，要根據(jù)你使用的芯片進(jìn)行選擇;在Target interface選項 里面選擇SWD模式;首先Target里面選“Connection”連接目標(biāo)芯片，然后 Target--Auto進(jìn)行程序燒寫;首先Target里面選擇“Connection”連接目標(biāo)芯片，然后 Target--Auto進(jìn)行程序燒寫.SEGGER J-Links are the most widely used line of debug probes available today. They've proven their value for more than 10 years in embedded development. This popularity stems from the unparalleled performance, extensive feature set, large number of supported CPUs, and compatibility with all popular development environments.
標(biāo)簽：
JLINK
上傳時間：
2022-03-22
上傳用戶：
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本系統(tǒng)采用電動機(jī)電樞供電回路串接采樣電阻的方式來實現(xiàn)對小型直流有刷電動機(jī)的轉(zhuǎn)速測量。該系統(tǒng)主要由二階低通濾波電路,小信號放大電路、單片機(jī)測量顯示電路、開關(guān)穩(wěn)壓電源電路等組成。同時自制電機(jī)測速裝置,用高頻磁環(huán)作為載體,用線圈繞制磁環(huán),利用電磁感應(yīng)原理檢測電機(jī)運行時的漏磁,將變化的磁場信號轉(zhuǎn)化為磁環(huán)上的感應(yīng)電流。用信號處理單元電路將微弱電信號轉(zhuǎn)化為脈沖信號,送由單片機(jī)檢測,從而達(dá)到準(zhǔn)確測量電機(jī)的速度的要求。In this system, the sampling resistance of armature power supply circuit is connected in series to measure the speed of small DC brush motor. The system is mainly composed of second-order low-pass filter circuit, small signal amplifier circuit, single-chip measurement and display circuit, switching regulated power supply circuit and so on. At the same time, the self-made motor speed measuring device uses high frequency magnetic ring as the carrier, coil winding magnetic ring, and electromagnetic induction principle to detect the leakage of magnetic field during the operation of the motor, which converts the changed magnetic field signal into the induced current on the magnetic ring. The weak electric signal is transformed into pulse signal by signal processing unit circuit, which is sent to single chip computer for detection, so as to meet the requirement of accurate measurement of motor speed.
標(biāo)簽：
直流電動機(jī)
上傳時間：
2022-03-26
上傳用戶：
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隨著光伏發(fā)電系統(tǒng)快速發(fā)展,以及電動汽車充電樁的普及,傳統(tǒng)的剩余電流保護(hù)器無法滿足實際需求。介紹了一款B型剩余電流保護(hù)器,采用磁調(diào)制剩余電流互感器和零序電流互感器采集剩余電流。根據(jù)GB/T 22794—2017標(biāo)準(zhǔn)要求,可識別1 kHz及以下的正弦交流、帶和不帶直流分量的脈動直流、平滑直流等剩余電流信號。經(jīng)信號調(diào)理電路將電壓信號送到單片機(jī)進(jìn)行采集和判斷。通過試驗測試,該樣機(jī)在測試精度和速度上均符合國家標(biāo)準(zhǔn)的相關(guān)要求。The rapid development of photovoltaic power generation systems and the popularity of electric vehicle charging piles make the traditional residual current protective devices unable to meet the actual demand.This paper proposed a type B residual current protective device,which uses the magnetically modulated residual current transformer and the zero sequence current transformer to acquire the residual current.According to the requirements of GB/T 22794—2017,the type B residual current protective device can detect sinusoidal AC residual current of 1kHz and below 1kHz,pulsating DC residual current with and without DC component,smooth DC residual current and so on.The signal processing circuit sends the voltage signal to the MCU for acquisition and judgment.Through experimental tests,the device meets the relevant requirements of national standards in terms of test accuracy and speed.
標(biāo)簽：
電流保護(hù)器
上傳時間：
2022-03-27
上傳用戶：
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電學(xué)中的測量技術(shù)涉及范圍非常廣,電流測量在電學(xué)計量中占有非常重要的位置。如何精確地進(jìn)行電流測量是精密測量的一大難題。傳統(tǒng)的電流檢測電路多采用運算放大芯片與片外電流檢測電路相結(jié)合的方式,電路集成度很低,需要較多的接口和資源才能完成對電路的檢測。本文把所有電路部分都集成在一塊芯片上,包括檢測電阻,運算放大器電路及模擬轉(zhuǎn)數(shù)字轉(zhuǎn)換電路,從而在電路內(nèi)部可以進(jìn)行電流檢測,使電路更好的集成化。前置電路使用二級共源共柵結(jié)構(gòu)的運算放大器,減小溝道長度調(diào)制效應(yīng)造成的電流誤差。10位SAR ADC中采用電容驅(qū)動能力強(qiáng)的傳輸門保證了模數(shù)轉(zhuǎn)化器的有效精度。比較器模塊采用再生鎖存器與遲滯比較器作為基礎(chǔ)單元組合解決精密測量的問題。本設(shè)計可以作為嵌入芯片內(nèi)的一小部分而檢測芯片中的微小電流1mA~100mA,工作電壓在1.8v左右,電流檢測精度預(yù)期達(dá)到10uA的需求。The measurement technology in electricity involves a wide range,and current measurement plays a very important position in electrical measurement.How to accurately measure current is a big problem in precision measurement. The traditional current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the current detection accuracy is expected to reach the requirement of 10 uA.
標(biāo)簽：
電流檢測
電路
運算放大器
adc
上傳時間：
2022-04-03
上傳用戶：
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系統(tǒng)簡介:1.單片機(jī)+LCD1602液晶顯示器+三極管放大電路+蜂鳴器+按鍵+DS18B20+GSM遠(yuǎn)程報警等設(shè)計。2. 3個按鍵對應(yīng)3個不同的功能，設(shè)定值加1、設(shè)定值減1和蜂鳴器檢測。3. 5V可使用USB供電。4. DS18B20溫度傳感器模塊實現(xiàn)對溫度的檢測。測量范圍-50~120攝氏度，常溫LCD1602顯示25.0攝氏度左右，溫度精度在0.1℃；誤差±0.2℃以內(nèi).溫度變化時，顯示值將變化。蜂鳴器就會報警。啟動GSM短信報警功能。默認(rèn)設(shè)定值31攝氏度（方便用人體模擬）。5.采用三極管進(jìn)行輸出放大,驅(qū)動能力強(qiáng)、蜂鳴器顯示效果更好!6. 特點：穩(wěn)定、操作起來非常方便，上電就可以使用。7.佩戴引出I/O接口(40個排針)，用于連接下載器下載程序, 方便進(jìn)行升級調(diào)試.操作說明:S0:復(fù)位鍵 S1:設(shè)定值加1 S2：設(shè)定值減1 S3：蜂鳴器檢測 1、 上電/S0復(fù)位：液晶顯示“Detect System” “Temp=25.0 32.0” ，對應(yīng)檢測溫度和設(shè)定報警溫度。檢測傳感器表面溫度，顯示值變化。2、按S1、S2鍵：可以實現(xiàn)設(shè)定溫度的加減操作。3、按S3鍵：檢測蜂鳴器響聲。4、可以用手抓住溫度傳感器，模擬溫度檢測。檢測到溫度變化后、液晶顯示值變化，當(dāng)檢測溫度大于設(shè)定溫度時，蜂鳴器就會報警。并發(fā)送“DS18B20 Warning!”信息到指定手機(jī)。5、發(fā)送短信時，第一行顯示將發(fā)送變化：“message sending” “the sending ok” 6、手機(jī)卡記得插到卡槽里噢
標(biāo)簽：
單片機(jī)
溫度報警器
gsm
上傳時間：
2022-06-09
上傳用戶：
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RX-8801 SA Features built-in 32.768 kHz DTCXO, High Stability Supports l'C-Bus's high speed mode (400 kHz)Alarm interrupt function for day, date, hour, and minute settings Fixed-cycle timer interrupt function Time update interrupt function32.768 kHz output with OE function Auto correction of leap years Wide interface voltage range: 2.2 V to 5.5 V Wide time-keeping voltage range:1.8 V to 5.5 V Low current consumption: 0.84A/3V (Typ.)is an IC bus interface-compliant real-time clock which includes a 32.768 kHz DTCXO In addition to providing a calendar (year, month, date, day, hour, minute, second) function and a clock counter function, this module provides an abundance of other functions including an alarm function, fixed-cycle timer unction, time update interrupt function, and 32.768 kHz output function.The devices in this module are fabricated via a C-MOS process for low current consumption, which enables ong-term battery back-up.
標(biāo)簽：
時鐘芯片
rx8025t
上傳時間：
2022-06-17
上傳用戶：
