提出了一种以S3C2440A为核心处理器的银行评价器的设计方案,并结合XILINX公司的XL95144XL型CPLD,辅助S3C2440A,实现该银行评价器的各部分功能以及系统信号之间的相互协调。该评价器在系统设计上采用液晶屏显示,代替了以往简单的数码管电路的显示模式,在视觉上给人以全新的享受。同时,评价器增加了新的网络供电方式,只要将评价器连接上网络就可以正常工作,方便了客户的使用。总之,此款银行评价器采用了嵌入式系统的设计方案,大大丰富了系统功能,实现一个银行评价器设计的新突破。 Abstract: S3C2440A of SamSung company is the core component of the embedded system. A design of bank assessor based on S3C2440A was provided in this paper. It used XL95144XL combined with S3C2440A to realize all the functions and coordination with system signals. This bank assessor used LCD to display instead of the former simple digital display and provided a new seusuous enjoment. Meanwhile,it provided a new method of network power supply,that the bank assessor could regularly work once it connected to the network,which is convenient for customers to use. In a word,this assessor takes embedded system,enriches the system’s functions and reclizes a new breakout.
标签: S3C2440A
上传时间: 2013-11-03
上传用户:taa123456
概述 HT46R32/HT46R34是8位高性能精简指令集单片机,专门为需要A/D转换的产品而设计,例如传感器信号输入。内置放大器/比较器和PWM调制功能使得这款单片机处理模拟信号的能力更加强大。 低功耗、I/O使用灵活、可编程分频器、计数器、振荡类型选择、多通道A/D转换运算放大器/比较器、脉冲测量功能、暂停和唤醒功能,使这款单片机可以广泛应用于传感器的信号处理、马达控制、工业控制、消费类产品、子系统控制等等。
上传时间: 2013-11-13
上传用户:哈哈hah
以AVR单片机ATmega8和USB接口器件PDIUSBD12为核心,基于标准的USB1.1协议,设计一种通用USB接口模块,以满足嵌入式系统中对USB接口的需求。对模块的硬件电路或单片机固件程序的硬件接口层稍加修改即可用于其他各种微处理器。该模块可为各种嵌入式系统增加USB接口,实现与USB主机系统通信。 Abstract: Based on AVR microcontroller ATmega8 and USB interface chip PDIUSBD12, a general USB interface module is designed according to USB1.1 protocol for various requirements of embedded systems. Only with few modifications in circuit or hardware abstract layer of firmware, the module can be used on many types of microprocessors. All kinds of embedded systems can realize high speed and stable communication with USB host systems, owing to the facility of this module.
上传时间: 2014-01-08
上传用户:赵云兴
在需要实时大量输入汉字的显示控制处理应用中,利用传统单片机实现显示控制的设计方法是较难实现的。带汉字字库的液晶模块的使用使得小容量ROM单片机的大量汉字信息输入与显示成为可能。提出了针对汉字字库编码的二级索引拼音输入检索方法,介绍了以ST7920作为控制器的带汉字字库的液晶显示模块的接口方法及汉字显示和控制原理,给出了通用计算机键盘在单片机中的串行接口,采用该技术可大大增强单片机的汉字输入功能。为小容量ROM单片机的大批量汉字信息处理提供了一种汉字输入解决方案。 Abstract: It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the principle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this technology, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.
上传时间: 2013-11-19
上传用户:jhksyghr
Bootloader是微处理器上电时运行的第一段代码,它可以通过通信接口实现对微处理器内部应用程序的更新升级,为网络化嵌入式产品的应用程序升级带来极大的便利。由于目前没有统一嵌入式系统的Bootloader。基于NEC 78K0系列单片机自编程原理,设计出一个适用于78K0/Fx2系列单片机的Bootloader,并能够通过单片机串口在线升级应用程序。 Abstract: Bootloader is the first piece of code executed after microprocessor startup. It makes the embedded product’s firmware update conveniently through communication interface. However, no unified bootloader is available for all kinds of microprocessor products. Based on the principle of self-programming NEC 78K0s’ series, a useful Bootloader which is suitable for 78K0/Fx2s’ series MCU is designed,the design can update the application through serial ports.
标签: Bootloader MCU 自编程
上传时间: 2013-10-26
上传用户:fang2010
汽车发动机电控系统的结构与维修(A)试题
上传时间: 2013-10-09
上传用户:hsfei8
HT46R23/HT46C23是8位高性能精简指令集单片机,专门为需要A/D转换的产品而设计,例如传感器信号输入。掩膜版本HT46C23与OTP版本HT46R23引脚和功能完全相同。低功耗、I/O使用灵活、可编程分频器、计数器、振荡类型选择、多通道A/D转换、脉冲测量功能、I2C通信、暂停和唤醒功能,使这款单片机可以广泛应用于传感器的A/D转换、马达控制、工业控制、消费类产品等系统中。
上传时间: 2013-11-02
上传用户:aa54
单片机在日常生活中用得越来越多,其集成度也越来越高,目前拥有多种单片机都集成有A/D转换功能,如PIC,AVR,SUNPLUS,SH等。处理器的位数从4位到32位或更高,转换精度从6位,8位,10位或更高。
上传时间: 2013-10-28
上传用户:xa_lgy
Atmel AVR 单片机上网方案 The AVR Embedded Internet Toolkit is the fastest way to connect anyembedded design to the Internet. It includes an ATmega AVR microcontroller,dedicated hardware, and all required software protocols forconnecting to the Internet. The AVR Embedded Internet Toolkit is thefastest choice for getting started with embedded Internet and for developinga complete embedded application connected to the Internet.
上传时间: 2013-11-06
上传用户:xjz632
摘 要:从应用角度介绍了具有11个输入端的12位A/D转换器TLC2543的结构与编程要点,探讨了TLC2543与51系列单片机的接口方法,用软件合成SPI操作,给出了接口电路与A/D采集程序设计实例,并对实际应用时应注意的问题进行了探讨。关键词:A/D转换;TLC2543芯片;51系列单片机;接口技术
上传时间: 2013-11-22
上传用户:瓦力瓦力hong