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单片机编程  LPC1700以太网MIIM接口应用笔记

The LPC1700 Ethernet block contains a full featured 10 Mbps or 100 Mbps Ethernet MAC (Media Access Controller) designed to provide optimized performance through the use of DMA hardware acceleration. Features include a generous suite of control registers, half or full duplex operation, flow control, ...

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单片机编程  Keil C51开发系统基本知识3

Keil C51开发系统基本知识3 1. 1. 专用寄存器include文件例如8031、8051均为REG51.h其中包括了所有8051的SFR及其位定义，一般系统都必须包括本文件。2. 2. 绝对地址include文件absacc.h该文件中实际只定义了几个宏，以确定各存储空间的绝对地址。3. 3. 动态内存分配函数，位于stdlib.h中 4. 4. 缓冲区处理函数位于“string. ...

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单片机编程  AT89C2051驱动步进电机的电路和源码

AT89C2051驱动步进电机的电路和源码:AT89C2051驱动步进电机的电路和源码程序:stepper.c stepper.hex/* * STEPPER.C * sweeping stepper's rotor cw and cww 400 steps * Copyright (c) 1999 by W.Sirichote */＃i nclude c:\mc5151io.h /* include i/o header file */ ＃i nclude c:\mc5151reg.hregister unsigned char j, ...

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单片机编程  PCA9534 8bit I2C bus and SMBus low power IO port with interru

The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O toleran ...

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单片机编程  PCA9535 PCA9535C 16bit I2C bus

The PCA9535 and PCA9535C are 24-pin CMOS devices that provide 16 bits of GeneralPurpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and wasdeveloped to enhance the NXP Semiconductors family of I2C-bus I/O expanders. Theimprovements include higher drive capability, 5 V I/O t ...

https://www.eeworm.com/dl/502/30985.html

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单片机编程  PCA9555 16bit I2C-bus and SMBu

The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallelInput/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed toenhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvementsinclude higher drive capability, 5 V I/O tolerance, lo ...

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单片机编程  可编程自动控制控制跑马灯

这一颗，我们学习如何让跑马灯自动按照我们预定的顺序进行。这种控制在工控场合经常用到。这个程序里，我们预先定义了一个变化的顺序speedcode，每跑一圈灯就根据预定设置的表格数据来决定下一圈的跑马速度。这样我们就实现了按照预定的顺序自动变化运行。请看代码：-----------------------------------#define uchar unsi ...

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单片机编程  数字钟显示电路

SHUZIZHONG显示电路源程序如下： #include <reg51.h>#include <intrins.h> unsigned char data dis_digit; unsigned char code dis_code[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};unsigned char data dis_buf[16];unsigned char data dis_index;char hour,min,sec,wang,yea ...

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单片机编程  MPC106 PCI Bridge/Memory Contr

In this document, the term &Ocirc;60x&Otilde; is used to denote a 32-bit microprocessor from the PowerPC architecture family that conforms to the bus interface of the PowerPC 601&ordf;, PowerPC 603&ordf;, or PowerPC 604 microprocessors. Note that this does not include the PowerPC 602&ordf; microproc ...

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单片机编程  DS1302+AT89S52+LED时钟程序(C语言源代码+

#include<reg51.h>/*************************ds1302与at89s52引脚连接********************/sbit T_RST=P3^5; sbit T_CLK=P3^6;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sbit T_IO=P3^7;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n ...

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