The GL823K integrates a high speed 8051 microprocessor and a high efficiency Hardware engine for the best data transfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
上傳時(shí)間： 2022-04-27
上傳用戶：qdxqdxqdxqdx
針對(duì)交流電路過零檢測電路存在結(jié)構(gòu)復(fù)雜、過零點(diǎn)檢測不準(zhǔn)確、編程繁瑣等問題，設(shè)計(jì)了一種基于LM339的硬件結(jié)構(gòu)簡單的過零檢測電路。通過仿真軟件Mulisim對(duì)該設(shè)計(jì)電路進(jìn)行了仿真，實(shí)驗(yàn)證明了該方案過零檢測的可行性、穩(wěn)定性和可靠性，可直接作為交流電路中CPU的過零信號(hào)。Aiming at the problems of AC cilsuit zero crossing detection circuit such as complex structure, zero crossing detection and cumbersome programming, a zero crossing detection circuit with simple Hardware structure based on LM339 was designed. The design circuit was simulated by simulation software Mulisim, and the feasibility, stability and reliability of zero crossing detection were proved by experiments, which can be used as zero crossing signal of CPU in AC circuit directly.
上傳時(shí)間： 2022-05-03
上傳用戶：
基于TMS320F28335的超聲波流量計(jì)硬件原理圖+軟件源碼本文以TMS320F28335 處理器為核心，設(shè)計(jì)一種用于管道流量測量的超聲波流量計(jì)。系統(tǒng)硬件由核心板，超聲波發(fā)射和接收電路，切換電路，超聲換能器，基于ADS805 的高速信號(hào)采集電路，人機(jī)交互以及電源等模塊構(gòu)成。采用時(shí)差法進(jìn)行管道流量測量，時(shí)差測量采用SCOT 加權(quán)的廣義互相關(guān)時(shí)延估計(jì)算法。本論文設(shè)計(jì)的超聲波流量計(jì)具有測量速度快、準(zhǔn)確性好、成本低等優(yōu)點(diǎn)。關(guān)鍵字：C2000，超聲波，流量，廣義互相關(guān)算法AbstractA kind of ultrasonic flowmeter using for the pipe flow measurement is designed based onTMS320F28335 in this paper. The system Hardware consists of the following parts: the core board,ultrasonic signal transmitter and receiver circuits, switch circuit, ultrasonic transducer, signalacquisition circuit based on ADS805, human-computer interaction module and power supplymodule, etc. The system use the method of time difference for pipeline flow measurement and thetime difference is calculated by the time-delay algorithm of SCOT weighted generalizedcross-correlation. The ultrasonic flowmeter has the features of high testing speed, high precisionand low cost, etc.Keywords: C2000,Ultrasonic, Flow, Generalized Cross-Correlation Algorithm
標(biāo)簽： tms320f28335 超聲波流量計(jì)
上傳時(shí)間： 2022-05-06
上傳用戶：
以STM32F103C8T6為核心,設(shè)計(jì)了無刷直流電機(jī)控制器硬件電路。電路主要包括IR2310構(gòu)成的PWM驅(qū)動(dòng)電路、IRF3808構(gòu)成的逆變電路、增量式旋轉(zhuǎn)編碼構(gòu)成的速度反饋電路。控制器具有CAN和RS232通信接口,可與計(jì)算機(jī)或PLC構(gòu)成速度或位置伺服系統(tǒng)。利用由xPC目標(biāo)搭建的半實(shí)物仿真平臺(tái)對(duì)PI參數(shù)進(jìn)行整定。測試了控制器的速度伺服響應(yīng)性能,給定速度為2400rpm時(shí),控制器響應(yīng)時(shí)間為0.32s。實(shí)驗(yàn)結(jié)果表明,系統(tǒng)工作可靠,穩(wěn)定性好,響應(yīng)速度快,可以滿足上肢康復(fù)機(jī)器人的機(jī)械臂速度控制性能要求。The Hardware circuit of Brushless DC motor controller is designed by taking STM32F103C8T6 as the core,which mainly includes PWM driving circuits made up of IR2310,inverter circuit formed by IRF3808,speed feedback circuit composed of incremental rotary encoder and so on.Speed servo control system or position servo control system can be composed of BLDM controller with computer or PLC through CAN communication interface or RS232 serial communication interface.By using the Hardware in the loop simulation platform built by xPC target,the PI parameters are set up.The Speed servo response performance of the controller is tested.When the speed is 2 400 rpm,the response time of the controller is 0...
標(biāo)簽： stm32 無刷直流電機(jī)
上傳時(shí)間： 2022-05-07
上傳用戶：
基于DSP28035的高速永磁無刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)，包括論文和軟硬設(shè)計(jì)資料。摘要參賽作品為基于DSP28035的高速永磁無刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)。該系統(tǒng)以一臺(tái)額定轉(zhuǎn)速60 krpm的高速永磁無刷直流電機(jī)、交錯(cuò)并聯(lián)的Buck電路以及全橋電路為硬件平臺(tái)，以DSP28035為控制核心，實(shí)現(xiàn)了調(diào)壓調(diào)速功能和基于坐標(biāo)變換的無位置傳感器新技術(shù)。為實(shí)現(xiàn)該系統(tǒng)要求，本作品充分利用了DSP28035的資源例如：CLA模塊，模擬比較器、HPWM模塊以及AD轉(zhuǎn)換模塊等。AbstractThis work is the drive system for a high speed permanent magnet burshless dc motor based on DSP28035. The Hardware platform consists of a BLDC motor(rated speed is 60000rpm), a Buck circuit and an inverter. Under the control of DSP28035, this system can achieve the goal of adjusting the motor’s speed with voltage and the function of sensorless control based on the coordinate transformation. By making full use of resources of the core, such as CLA, analog comparator, HPWM and AD converters, the whole system can meet the requirements.1 引言高速永磁無刷直流電機(jī)驅(qū)動(dòng)系統(tǒng)由于基波頻率較高（一般在1kHZ以上），利用逆變橋斬波進(jìn)行調(diào)速的控制方式通常會(huì)受到開關(guān)管開關(guān)頻率的限制，因此該系統(tǒng)多采用三相全橋前級(jí)加Buck電路進(jìn)承擔(dān)調(diào)壓調(diào)速的功能，而三相全橋主要承擔(dān)邏輯換相的功能。然而，傳統(tǒng)Buck電路所需電感的體積較大，增加了系統(tǒng)的體積，降低了系統(tǒng)的功率密度。
上傳時(shí)間： 2022-05-08
上傳用戶：bluedrops
AN222944 HX3PD硬件設(shè)計(jì)指南和檢查表硬件（英文名Hardware）是計(jì)算機(jī)硬件的簡稱（中國大陸及香港用語，臺(tái)灣叫作:硬體），是指計(jì)算機(jī)系統(tǒng)中由電子，機(jī)械和光電元件等組成的各種物理裝置的總稱。這些物理裝置按系統(tǒng)結(jié)構(gòu)的要求構(gòu)成一個(gè)有機(jī)整體為計(jì)算機(jī)軟件運(yùn)行提供物質(zhì)基礎(chǔ)。簡而言之，硬件的功能是輸入并存儲(chǔ)程序和數(shù)據(jù)，以及執(zhí)行程序把數(shù)據(jù)加工成可以利用的形式。從外觀上來看，微機(jī)由主機(jī)箱和外部設(shè)備組成。主機(jī)箱內(nèi)主要包括CPU、內(nèi)存、主板、硬盤驅(qū)動(dòng)器、光盤驅(qū)動(dòng)器、各種擴(kuò)展卡、連接線、電源等；外部設(shè)備包括鼠標(biāo)、鍵盤等。
標(biāo)簽： HX3PD
上傳時(shí)間： 2022-06-25
上傳用戶：20125101110
AP3852 是一款擁有 CPU 和 DSP 雙核的智能音頻/語音處理芯片。芯片內(nèi)置有 32 位 CPU 和 32 位 DSP 以及 2M FLASH，配合豐富的外圍控制接口，非常適合各 種智能音頻/語音處理系統(tǒng)。 該芯片配合菁音科技各種專利音頻處理算法，能處理從聲音輸入、噪聲消除、 音頻預(yù)補(bǔ)償、音效處理到聲音回放的一個(gè)完整的音頻通路；僅需配備簡單的外圍 器件即可組成高品質(zhì)的音頻輸入/回放系統(tǒng)。能極大的提升產(chǎn)品的性能。 芯片內(nèi)置 32Bits CPU，擁有良好的開發(fā)環(huán)境；內(nèi)置 32Bits 音效處理 DSP，支 持浮點(diǎn)數(shù)運(yùn)算、支持 FFT，方便各種進(jìn)行各種算法編寫；此外，為增加運(yùn)算能力， 芯片還內(nèi)置有一塊專用的 Hardware Engine 單元，特別適合高速 FIR/IIR 運(yùn)算。 芯片內(nèi)置24Bits的Audio Codec，具有較高的SNR、THD。內(nèi)置112KBytesSRAM； 內(nèi)置 32 位 OTP Key，支持用戶程序加密。 具有豐富的外圍接口，包括 Full Speed USB Device、10Bits SAR ADC、SPI、I2C、 I2S、UART、GPIO 等。
標(biāo)簽： usb192k 麥克風(fēng) 芯片 ap3852 規(guī)格
上傳時(shí)間： 2022-07-07
上傳用戶：
STM32 HAL固件庫是Hardware Abstraction Layer的縮寫，中文名稱是：硬件抽象層。HAL庫是ST公司為STM32的MCU最新推出的抽象層嵌入式軟件，為更方便的實(shí)現(xiàn)跨STM32產(chǎn)品的最大可移植性。HAL庫的推出，可以說ST也慢慢的拋棄了原來的標(biāo)準(zhǔn)固件庫，這也使得很多老用戶不滿。但是HAL庫推出的同時(shí)，也加入了很多第三方的中間件，有RTOS，USB，TCP / IP和圖形等等。和標(biāo)準(zhǔn)庫對(duì)比起來，STM32的HAL庫更加的抽象，ST最終的目的是要實(shí)現(xiàn)在STM32系列MCU之間無縫移植，甚至在其他MCU也能實(shí)現(xiàn)快速移植。
上傳時(shí)間： 2022-07-08
上傳用戶：
MPC5748This reference manual is intended for system software and Hardware developers andapplications programmers who want to develop products with this device. It assumes thatthe reader understands operating systems, microprocessor system design, and basicprinciples of software and Hardware.
標(biāo)簽： MPC5748G
上傳時(shí)間： 2022-07-25
上傳用戶：
RK3328手冊RK3328 is a high-performance Quad-core application processor designed for Smart STB(Set Top Box) including OTT/IPTV/DVB. It is a high-integration and cost efficient SOC for 4KHDR STB.Quad-core Cortex-A53 is integrated with separate Neon and FPU coprocessor, also withshared L2 Cache. The Quad-core GPU supports high-resolution display and game.Lots of high-performance interface to get very flexible solution, such as multi-channeldisplay including HDMI2.0a and TV Encoder (CVBS). TrustZone and crypto Hardware areintegrated for security. 32bits DDR3/DDR3L/DDR4/LPDDR3 provides high memorybandwidth.
上傳時(shí)間： 2022-08-10
上傳用戶：
蟲蟲下載站版權(quán)所有 京ICP備2021023401號(hào)-1
