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单片机编程  PCA954X家庭的I C SMBus多路复用器与开关

The Philips family of Multiplexers and Switches consists of bi-directional translating switches controlled via the I2C or SMBus to fan out an upstream SCL/SDA pair to 2, 4 or 8 downstream channels of SCx/SDx pairs. The Multiplexers allow only one downstream channel to be selected at a time, while th ...

https://www.eeworm.com/dl/502/31082.html

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单片机编程  基于单DSP的VoIP模拟电话适配器研究与实现

基于单DSP的VoIP模拟电话适配器研究与实现:提出和实现了一种新颖的基于单个通用数字信号处理器(DSP)的VoIP模拟电话适配器方案。DSP的I/O和存储资源非常有限，通常适于运算密集型应用，不适宜控制密集型应用[5]。该系统高效利用单DSP的I/O和片内外存储器资源，采用μC/OS-II嵌入式实时操作系统，支持SIP和TCP-UDP/IP协议，通 ...

https://www.eeworm.com/dl/502/31148.html

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单片机编程  USB Demonstration for DK3200 w

The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revis ...

https://www.eeworm.com/dl/502/31371.html

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单片机编程  P90CL301 I2C driver routines

This application note shows how to write an Inter Integrated Circuit bus driver (I&sup2;C) for the Philips P90CL301micro-controller.It is not only an example of writing a driver, but it also includes a set of application interface software routines toquickly implement a complete I&sup2;C multi-maste ...

https://www.eeworm.com/dl/502/31375.html

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单片机编程  Input Signal Rise and Fall Tim

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, howeve ...

https://www.eeworm.com/dl/502/31376.html

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单片机编程  介绍C16x系列微控制器的输入信号升降时序图及特性

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, howeve ...

https://www.eeworm.com/dl/502/31379.html

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单片机编程  XA-S3 I2C driver software

This application note demonstrates how to write an Inter Integrated Circuit bus driver (I2C) for the XA-S3 16-bitMicrocontroller from Philips Semiconductors.Not only the driver software is given. This note also contains a set of (example) interface routines and a smalldemo application program. All t ...

https://www.eeworm.com/dl/502/31380.html

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单片机编程  Using the 87LPC76X microcontro

I2C interface, is a very powerful tool for system designers. Theintegrated protocols allow systems to be completely software defined.Software development time of different products can be reduced byassembling a library of reusable software modules. In addition, themultimaster capability allows rapid ...

https://www.eeworm.com/dl/502/31392.html

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单片机编程  DS1820 C51 子程序 (一线数据传输)

//芯片资料请到www.elecfans.com查找 //DS1820 C51 子程序//这里以11.0592M晶体为例，不同的晶体速度可能需要调整延时的时间//sbit DQ =P2^1;//根据实际情况定义端口 typedef unsigned char byte;typedef unsigned int&nbsp; word; //延时void delay(word useconds){&nbsp; for(;useconds>0;useconds--);} //复位byte ow_re ...

https://www.eeworm.com/dl/502/31450.html

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单片机编程  采用18b20芯片的温度测量C51源程序

#include <reg51.h>#include<intrins.h> #define&nbsp;&nbsp; BUSY1&nbsp;&nbsp;&nbsp; (DQ1==0) sbit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DQ1&nbsp;&nbsp;&nbsp; =&nbsp; P0^4; unsigned char idata TMP; unsigned char idata TMP_d; unsigned char f; void wr_ds18_1(char dat);unsigned char rd_ds18_1(); /*************** ...

https://www.eeworm.com/dl/502/31456.html

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