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The PW3130 series product is a high integration solution for lithium-lion/polymer batteryprotection.PW3130 contains advanced power MOSFET, high-accuracy voltage detection circuits anddelay circuits. PW3130 is put into an ultra-small SOT23-5 package and only one external componentmakes it an ideal solution in limited space of battery pack. PW3130 has all the protection functionsrequired in the battery application including overcharging, overdischarging, overcurrent and loadshort circuiting protection etc. The accurate overcharging detection voltage ensures safe and fullutilization charging.The low standby current drains little current from the cell while in storage. Thedevice is not only targeted for digital cellular phones, but also for any other Li-Ion and Li-Polybattery-powered information appliances requiring long-term battery life
標(biāo)簽：
pw3130
上傳時(shí)間：
2022-02-11
上傳用戶：fliang
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高清電子書-C++ Primer Plus, 第6版英文版 1438頁(yè)Learning C++ is an adventure of discovery, particularly because the language accommodates several programming paradigms, including object-oriented programming,
generic programming, and the traditional procedural programming.The fifth edition of
this book described the language as set forth in the ISO C++ standards, informally
known as C++99 and C++03, or, sometimes as C++99/03. (The 2003 version was
largely a technical correction to the 1999 standard and didn’t add any new features.)
Since then, C++ continues to evolve.As this book is written, the international C++
Standards Committee has just approved a new version of the standard.This standard had
the informal name of C++0x while in development, and now it will be known as
C++11. Most contemporary compilers support C++99/03 quite well, and most of the
examples in this book comply with that standard. But many features of the new standard
already have appeared in some implementations, and this edition of C++ Primer Plus
explores these new features.
C++ Primer Plus discusses the basic C language and presents C++ features, making
this book self-contained. It presents C++ fundamentals and illustrates them with short,
to-the-point programs that are easy to copy and experiment with.You learn about
input/output (I/O), how to make programs perform repetitive tasks and make choices,
the many ways to handle data, and how to use functions.You learn about the many
features C++ has added to C, including the followi
標(biāo)簽：
C++
上傳時(shí)間：
2022-02-19
上傳用戶：trh505
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該問(wèn)題由某客戶提出，發(fā)生在 STM32F103VBT6 器件上。據(jù)其工程師講述：在為 STM32 調(diào)試軟件過(guò)程中，遇到了一個(gè)怪現(xiàn)象：有如表（一）所示的一段程序中，KeyIn 是一個(gè)全局變量。當(dāng)有按鍵按下時(shí)，鍵盤的中斷服務(wù)程序會(huì)將對(duì)應(yīng)的鍵值放入其中，當(dāng)按鍵釋放后，鍵盤中斷服務(wù)程序則把 RESET 值放入該變量。行（1）的條件語(yǔ)句在主程序中，檢測(cè)有無(wú)按鍵按下，并處理。行（2）則是等待按鍵釋放。調(diào)試時(shí)，在行（1）和行（2）處各設(shè)置一個(gè)斷點(diǎn)，然后全速運(yùn)行程序。當(dāng)程序停在行（1）時(shí)按下按鍵，繼續(xù)全速運(yùn)行程序。當(dāng)程序
標(biāo)簽：
while循環(huán)
上傳時(shí)間：
2022-02-21
上傳用戶：
-
電子書-十天學(xué)會(huì)單片機(jī)實(shí)例100.pdf//實(shí)例 4：用單片機(jī)控制一個(gè)燈閃爍：認(rèn)識(shí)單片機(jī)的工作頻率 #include<reg51.h> //包含單片機(jī)寄存器的頭文件 /**************************************** 函數(shù)功能：延時(shí)一段時(shí)間 *****************************************/ void delay(void) //兩個(gè) void 意思分別為無(wú)需返回值，沒有參數(shù)傳遞 { unsigned int i; //定義無(wú)符號(hào)整數(shù)，最大取值范圍 65535 for(i=0;i<20000;i++) //做 20000 次空循環(huán) ; //什么也不做，等待一個(gè)機(jī)器周期 } /******************************************************* 函數(shù)功能：主函數(shù) （C 語(yǔ)言規(guī)定必須有也只能有 1 個(gè)主函數(shù)） ********************************************************/ void main(void) { while(1) //無(wú)限循環(huán) { P1=0xfe; //P1=1111 1110B， P1.0 輸出低電平 delay(); //延時(shí)一段時(shí)間 P1=0xff; //P1=1111 1111B， P1.0 輸出高電平 www.91
標(biāo)簽：
單片機(jī)
上傳時(shí)間：
2022-03-19
上傳用戶：kingwide
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電子書-RTL Design Style Guide for Verilog HDL540頁(yè)A FF having a fixed input value is generated from the description in the upper portion of
Example 2-21. In this case, ’0’ is output when the reset signal is asynchronously input,
and ’1’ is output when the START signal rises. Therefore, the FF data input is fixed at
the power supply, since the typical value ’1’ is output following the rise of the START
signal.
When FF input values are fixed, the fixed inputs become untestable and the fault detection rate drops. When implementing a scan design and converting to a scan FF, the scan
may not be executed properl not be executed properly, so such descriptions , so such descriptions are not are not recommended. recommended.[1] As in the lower
part of Example 2-21, be sure to construct a synchronous type of circuit and ensure that
the clock signal is input to the clock pin of the FF.
Other than the sample shown in Example 2-21, there are situations where for certain
control signals, those that had been switched due to the conditions of an external input
will no longer need to be switched, leaving only a FF. If logic exists in a lower level and a
fixed value is input from an upper level, the input value of the FF may also end up being
fixed as the result of optimization with logic synthesis tools. In a situation like this, while
perhaps difficult to completely eliminate, the problem should be avoided as much as possible.
標(biāo)簽：
RTL
verilog hdl
上傳時(shí)間：
2022-03-21
上傳用戶：canderile
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在全球氣候變暖和石油資源短缺的形勢(shì)下,推動(dòng)新能源汽車的發(fā)展將成為汽車行業(yè)一種新的發(fā)展方向。在大力發(fā)展新能源電動(dòng)汽車行業(yè)的同時(shí)還應(yīng)兼顧電動(dòng)汽車充電設(shè)施的發(fā)展,因此對(duì)電動(dòng)汽車充電樁的設(shè)計(jì)與研究顯得十分必要。對(duì)電動(dòng)汽車直流充電樁的硬件系統(tǒng)進(jìn)行設(shè)計(jì),主要的硬件電路包括安全監(jiān)測(cè)電路、總壓采集電路、溫濕度檢測(cè)電路、語(yǔ)音電路。軟件包括主要流程圖和溫濕度檢測(cè)流程圖。Under the situation of global warming and shortage of petroleum resources,promoting the development of new energy vehicles will become a new development direction for the automotive industry.while vigorously developing the new energy electric vehicle industry,we should also take into account the development of electric vehicle charging facilities.Therefore,the design and research of electric vehicle charging piles is very necessary.The hardware system of the electric vehicle DC charging pile is designed.The main hardware circuits include safety monitoring circuit,total voltage collecting circuit,temperature and humidity detecting circuit,voice circuit and CAN communication.The software includes a main flow chart and a temperature and humidity detection flow chart.
標(biāo)簽：
電動(dòng)汽車
上傳時(shí)間：
2022-04-03
上傳用戶：jason_vip1
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最近經(jīng)理通知要做項(xiàng)目了，讓我選型一個(gè)LCD開始試著做下。這是我用仿真實(shí)現(xiàn)的一個(gè)smt32的硬件SPI1來(lái)驅(qū)動(dòng)的ST7735R，難度挺小的，因?yàn)榇蟛糠值拇aLCD的廠商已經(jīng)給我們提供了，我們主要修改成硬件SPI來(lái)驅(qū)動(dòng)就好了。 此次仿真上面有2個(gè)問(wèn)題，不知道是代碼的問(wèn)題還是仿真圖上的問(wèn)題。第一個(gè)問(wèn)題是仿真運(yùn)行時(shí)有時(shí)會(huì)出通信數(shù)據(jù)傳輸問(wèn)題，導(dǎo)致指令越界報(bào)警，這個(gè)可能是SPI不穩(wěn)定導(dǎo)致的；第二個(gè)問(wèn)題是在改用SPI2或者SPI3來(lái)驅(qū)動(dòng)沒有任何反應(yīng)，猜測(cè)是代碼時(shí)鐘沒開對(duì)或者仿真圖上面還要加上具體晶振。 代碼工程和仿真工程都已壓縮打包，可放心下載。。。先貼上仿真實(shí)現(xiàn)圖： 再貼上部分代碼：/**ST7735驅(qū)動(dòng)**/#include "ST7735.h"#include "usart.h" u16 BACK_COLOR, POINT_COLOR; //背景色，畫筆色 void WriteCommand_7735(u8 CmdData) //寫指令{SPI_LCD_CS_LOW; //片選SPI_LCD_COMMAND_W;//寫指令SPI_I2S_SendData(LCD_SPIx,CmdData);while (SPI_I2S_GetFlagStatus(LCD_SPIx, SPI_I2S_FLAG_TXE) == RESET){}SPI_LCD_CS_HIGH;} void WriteDate_7735(u8 Data) //寫8位數(shù)據(jù){SPI_LCD_CS_LOW; //片選SPI_LCD_DATA_W;//寫數(shù)據(jù)SPI_I2S_SendData(LCD_SPIx,Data);while(SPI_I2S_GetFlagStatus(LCD_SPIx, SPI_I2S_FLAG_TXE) == RESET){} SPI_LCD_CS_HIGH; } void WriteDate16(int data) //寫16位數(shù)據(jù){WriteDate_7735(data>>8);WriteDate_7735(data);} 字符限制了，貼不了多少，2積分即可下載。。。
標(biāo)簽：
stm32
硬件
spi
驅(qū)動(dòng)
tft
lcd
proteus
上傳時(shí)間：
2022-04-12
上傳用戶：
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S32K1xx Series Reference Manual 用戶手冊(cè)--2029頁(yè) Supports S32K116, S32K118, S32K142, S32K144, S32K146, and S32K148S32K是一款符合AEC-Q100規(guī)范、基于32位ARM Cortex-M4F和Cortex-M0+內(nèi)核的MCU，適用于通用汽車和高可靠性工業(yè)應(yīng)用。The S32K1xx product series further extends the highly scalable portfolio of Arm? Cortex?-M0+/M4F MCUs in the automotive industry. It builds on the legacy of the KEA series, while introducing higher memory options alongside a richer peripheral set extending capability into a variety of automotive applications. With a 2.70–5.5 V supply and focus on automotive environment robustness, the S32K product series devices are well suited to a wide range of applications in electrically harsh environments, and are optimized for cost-sensitive applications offering low pin-count options. The S32K product series offers a broad range of memory, peripherals, and package options. It shares common peripherals and pin counts, allowing developers to migrate easily within an MCU family or among the MCU families to take advantage of more memory or feature integration. This scalability allows developers to use the S32K product series as the standard for their end product platforms, maximizing hardware and software reuse and reducing time to market
標(biāo)簽：
S32K116
S32K118
S32K142
S32K144
上傳時(shí)間：
2022-04-16
上傳用戶：jason_vip1
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隨著電磁閥在工業(yè)和日常應(yīng)用的增多,其功耗越來(lái)越被人們所重視。通過(guò)對(duì)電磁閥驅(qū)動(dòng)電路的研究,設(shè)計(jì)一套電磁閥節(jié)能驅(qū)動(dòng)電路。不僅提高了電磁閥的響應(yīng)時(shí)間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態(tài)下,變成大電流啟動(dòng)小電流維持的工作狀態(tài)。減少了由電流過(guò)大引起的電磁閥線圈過(guò)熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
標(biāo)簽：
電磁閥
節(jié)能驅(qū)動(dòng)電路
上傳時(shí)間：
2022-04-16
上傳用戶：
-
為適應(yīng)雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉(zhuǎn)換為正向電壓輸出。通過(guò)理論分析與仿真結(jié)合的方法對(duì)電流鏡采樣原理及4種不同的偏置電流電路方案進(jìn)行對(duì)比,最后通過(guò)實(shí)驗(yàn)數(shù)據(jù)驗(yàn)證了高精度高邊電流采樣電路的有效性。實(shí)驗(yàn)數(shù)據(jù)表明,該采樣電路可在-25~75℃的溫度工作范圍內(nèi),針對(duì)-10~＋10 A范圍內(nèi)的電流采樣實(shí)現(xiàn)優(yōu)于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...
標(biāo)簽：
雙向DC電源
電流采樣
上傳時(shí)間：
2022-04-22
上傳用戶：
