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Description: 车载导航控制通讯协议书.pdf....
高科公司车载导航控制通讯协议书
通讯方式: RS-232 RXD/TXD (TTL), 19200bps, 1/8/N/1 , 十六进制, LSB 先发.-vehicle navigation control communications agreement. Pdf .... hi-vehicle navigation companies control communications communications agreement Means : RS-232 RXD / TXD (TTL), 19200bps, 1/8/N/1. hexadecimal, the LSB first.
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Size: 24072 |
Author: 刘同清 |
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Description: RS-485接口具有较强的抗干扰性，数据传输的距离较远，在一些应用中常常需要把RS-232标准的信号转换为RS-485的标准信号进传输。图中所示电路允许数据在RS-232/RS-485这两个不兼容的串行数据接口间传递。传输速度为480波特时，传输距离可达1750米。图中双RS-232收发器IC1将主机(PC)输出的RS-232电平转换为TTL电平，驱动高速RS-485收发器IC2 的输入，倒相器使IC2、IC3在受到起始位时被激活。
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Size: 1396 |
Author: owen |
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Description: RS-485接口具有较强的抗干扰性，数据传输的距离较远，在一些应用中常常需要把RS-232标准的信号转换为RS-485的标准信号进传输。图中所示电路允许数据在RS-232/RS-485这两个不兼容的串行数据接口间传递。传输速度为480波特时，传输距离可达1750米。图中双RS-232收发器IC1将主机(PC)输出的RS-232电平转换为TTL电平，驱动高速RS-485收发器IC2 的输入，倒相器使IC2、IC3在受到起始位时被激活。-RS-485 trying to lay all the thoroughly bleed at the nose picking up the birthday 扰 fern cavity 强 ， Chu Huai basin cavity beat escapement for the birthday candle远Now ， Which instance, using Beckmannia中
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Size: 1024 |
Author: owen |
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Description: TOP PORT (USB) 调试接口说明
本接口是利用PL-2303HX的USB转RS232的接口芯片设计实现了一个TTL(5V)的RS232串口，并且利用了PL-2303HX的2个GPIO口软件模拟了一个低速的I2C总线.该接口由USB接口提供5V电压，可自带2Kbit(24C02)数据备份EEPROM (单独读写通道,不占用I2C总线地址)。并可对外提供小于250mA的5V电压。尤其适合WIN-XP以后的没有并口和串口笔记本电脑。整机成本不到￥20RMB。
-TOP PORT (USB) interface debugging of this interface is the use of PL-2303HX the USB to RS232 interface chip design to achieve a TTL (5V) of the RS232 serial port, and use of PL-2303HX the two GPIO port software simulation of a low-speed I2C bus. The interface from the USB interface to provide 5V voltage, can bring their own 2Kbit (24C02) data backup EEPROM (separate read and write access, do not occupy I2C bus address). And may provide less than 250mA of 5V voltage. WIN-XP is particularly suitable for subsequent parallel and serial no notebooks. Machine costs less than ￥ 20RMB.
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Size: 2979840 |
Author: 季超 |
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Description: -wire 总线是Maxim公司的产品，能实现在一根数据总线双向传输数据，其特有的64位全球唯一的光刻标识，使得一根数据总线上能挂接多个一线设备而无冲突，便于进行大规模的布点测控，使系统布线更方便，并最大限度的节省通信线的数量，但其独特的一线式通信协议，使其不能直接接入微机系统，而必须进行转换。硬件设计主要完成两个方面的设计，一是利用PC 机串行口供电的设计，另一是RS-232 电平到TTL电平转换的设计，硬件电路
--Wire bus is Maxim' s products, can achieve a two-way data bus transferring data, the unique 64-bit global unique identification lithography, making a data bus line can mount multiple devices without conflict, facilitate monitoring and control for large-scale distribution, the system wiring easier and to maximize the savings in the number of communication lines, but its unique line type communication protocol, it can not directly access computer systems, but must be converted. Hardware design was completed for two aspects of design, one serial port using PC-power design, and the other is RS-232 levels to TTL level converter design, the hardware circuit
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Size: 84992 |
Author: mugua |
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Description: IBM-PC/XT异步通信适配器采用INS8250串口通信芯片,她是构成RS-232C标准通信电压接口的核心部分部件，再加上RS-TTL电平转换芯片SN75150（TTL- RS-232）或MC1488和SN75154（RS232- TTL）或MC1489就实现INS8250异步收发器TTL电平与RS232电平之间的相互转换。-IBM-PC/XT asynchronous communications adapter with INS8250 serial communication chips, she constitutes a standard RS-232C communication interface, the core voltage components, together with RS-TTL level conversion chip SN75150 (TTL-RS-232) or MC1488 and SN75154 (RS232-TTL) or MC1489 to achieve INS8250 UART TTL level and RS232 level conversion between.
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Size: 4096 |
Author: 李娟 |
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Description: max232 datasheet for comunicate rs 232 to ttl
for flash mpeg dvd
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Size: 109568 |
Author: heru |
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Description: TTL电平，232电平,晶体管-晶体管逻辑集成电路-TTL level, 232 level, the transistor- transistor logic integrated circuits
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Size: 153600 |
Author: 纪奕龙 |
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Description: 1． 发送端固定发送0x01,0x02……0x32,32字节数据
2． 接收端接USB-TTL，当接收到后，打开串口助手，对接收到数据进行检验，当接收到的也是0x01,0x02……0x32,32字节数据表示接收正确
其中波特率4800
备注：
STC89C52 晶振11.0592MHZ-1. Fixed transmission 0x01, 0x02 ...... 0x32, 32-byte data of the transmitting side 2. The the reception terminating USB-ttl When receiving serial assistant opens the received data inspection, when received is 0x01, 0x02 ...... 0x32, 32-byte data represents one of the receiving correct baud 4800 Remarks: STC89C52 Crystal 11.0592MHZ
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Size: 51200 |
Author: sun |
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Description: DS1302,24C02,串口通讯 89s52程序，带仿真程序-DS1302 24C02 TTL 232 89s52
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Size: 946176 |
Author: 天师 |
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Description: 工业级GPRS DTU,232/485/TTL接口,支持透传,宏电,桑荣协议,技术支持 -Industrial GPRS DTU, 232/485/TTL interface, support for transparent transmission, Acer, Sang Rong agreement, technical support
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Size: 2419712 |
Author: simonxiao |
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Description: 51单片机实现串口接受和发送，Proteus仿真
在“2.1 键盘和LED 数码管显示设计”基础上，增加如下内容：
1、SCI 串行口、TTL-232 电平转换部分电路原理图；
2、相应程序流程图；
3、编程调试，在2.1 基础上，实现串口接收、发送功能，具体如下：
（1）按下某键，通过串口送出按下键的键号（重复4 字节）并在虚拟终端上显示；
（2）在虚拟终端上输入4 位要显示的数值，串行口接收后，在数码管上显示，数
值输入数据格式为‘s’、‘0~9’、‘0~9’、‘0~9’、‘0~9’、‘e’。-In the 2.1 LED keyboard and digital tube display design on the basis of , add the following content:
Part of the circuit diagram 1, SCI serial port, TTL-232 level conversion
2, the corresponding program flow chart
3, programming and debugging, based on the 2.1, realize the serial port to receive, send function, as follows:
(1) press of a key, through the serial port to send key press number keys (repeat 4 bytes) and displayed on a virtual terminal
(2) 4 bits of input to the displayed value on a virtual terminal, serial port after receiving, in the digital tube display, number
Value of the input data format is s , 0~9 , 0~9 , 0~9 , 0~9 , e .
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Size: 62464 |
Author: 58 |
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Description: 采用Atmel公司的AT89S52为核心，实现PC机与单片机系统之间的数据通信。单片机系统采集温度，将数据通过串口将数据传送至PC机，PC机上实现温度显示。用MAX232芯片完成单片机TTL电平到RS-232双向电平的转换 ；用46的矩阵式键盘完成所要显示的数据发送；用LED七段数码管显示接收和发送的数据。在软件设计方面，PC机采用VB或者VC语言编程，使用通信控件来实现串行口收发数据；单片机方面用中断方式完成数据的接收和发送。-Adopts AT89S52 as the core of Atmel company, realize the data communication between PC and single chip microcomputer system.SCM system to collect temperature, the data via a serial port to transfer data to PC, PC to realize the temperature display.Complete the single chip microcomputer with MAX232 chip TTL level to the RS- 232 two-way level conversion With 46 matrix keyboard to complete to display the data sent With seven segment digital tube LED display to send and receive data.In the aspect of software design, the PC using VB or VC programming language, USES the communication control to realize the serial port to send and receive data Single chip microcomputer aspects complete data receiving and sending in interrupt mode.
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Size: 24725504 |
Author: 因一 |
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Description: 这是RS232转TTL电平的一个驱动，基于ch340软件，可达到单片机开发所需要求。-This is a RS232 to TTL level of a drive, based on ch340 software, can achieve the requirements of the development of single-chip.
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Size: 183296 |
Author: 神木凌宇 |
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