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Erasable

  • AT89C51是一种带4K字节闪烁可编程可擦除只读存储器(FPEROM—Falsh Programmable and Erasable Read Only Memory)的低电压

    AT89C51是一种带4K字节闪烁可编程可擦除只读存储器(FPEROM—Falsh Programmable and Erasable Read Only Memory)的低电压,高性能CMOS8位微处理器,俗称单片机。该器件采用ATMEL高密度非易失存储器制造技术制造,与工业标准的MCS-51指令集和输出管脚相兼容。由于将多功能8位CPU和闪烁存储器组合在单个芯片中,ATMEL的AT89C51是一种高效微控制器,为很多嵌入式控制系统提供了一种灵活性高且价廉的方案。

    标签: Programmable Erasable FPEROM Memory

    上传时间: 2015-09-04

    上传用户:chongcongying

  • AT89C51是一种带4K字节闪烁可编程可擦除只读存储器(FPEROM—Falsh Programmable and Erasable Read Only Memory)的低电压

    AT89C51是一种带4K字节闪烁可编程可擦除只读存储器(FPEROM—Falsh Programmable and Erasable Read Only Memory)的低电压,高性能CMOS8位微处理器,俗称单片机。

    标签: Programmable Erasable FPEROM Memory

    上传时间: 2013-12-02

    上传用户:shinesyh

  • The FM24C256/C256L/C256LZ devices are 256 Kbits CMOS nonvolatile electrically Erasable memory. Thes

    The FM24C256/C256L/C256LZ devices are 256 Kbits CMOS nonvolatile electrically Erasable memory. These devices offer the designer different low voltage and low power options. They conform to all requirements in the Extended IIC 2-wire protocol. Furthermore, they are designed to minimize device pin count and simplify PC board layout requirements.

    标签: 256 electrically nonvolatile Erasable

    上传时间: 2016-12-11

    上传用户:lps11188

  • The AT24C512 provides 524,288 bits of serial electrically Erasable and programmable read only memor

    The AT24C512 provides 524,288 bits of serial electrically Erasable and programmable read only memory (EEPROM) organized as 65,536 words of 8 bits each. The device鈥檚 cascadable feature allows up to four devices to share a common two-wire bus. The device is optimized for use in many industrial and commercial applications where lowpower and low-voltage operation are essential. The devices are available in spacesaving 8-pin PDIP, 8-lead EIAJ SOIC, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead Leadless Array (LAP), and 8-lead SAP packages. In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 3.6V) versions.

    标签: electrically programmable provides Erasable

    上传时间: 2017-04-09

    上传用户:cc1015285075

  • R1EX24xxx series are two-wire serial interface EEPROM (Electrically Erasable and Programmable ROM).

    R1EX24xxx series are two-wire serial interface EEPROM (Electrically Erasable and Programmable ROM). They realize high speed, low power consumption and a high level of reliability by employing advanced MNOS memory technology and CMOS process and low voltage circuitry technology. They also have a 128-byte page programming function to make their write operation faster. Note: Renesas Technology鈥檚 serial EEPROM are authorized for using consumer applications such as cellular phone, camcorders, audio equipment. Therefore, please contact Renesas Technology鈥檚 sales office before using industrial applications such as automotive systems, embedded controllers, and meters

    标签: Electrically Programmable interface Erasable

    上传时间: 2014-01-07

    上传用户:xiaohuanhuan

  • 基于单片机的LED汉字显示屏设计与制作

    基于单片机的LED汉字显示屏设计与制作:在大型商场、车站、码头、地铁站以及各类办事窗口等越来越多的场所需要用LED点阵显示图形和汉字。LED行业已成为一个快速发展的新兴产业,市场空间巨大,前景广阔。随着信息产业的高速发展,LED显示作为信息传播的一种重要手段,已广泛应用于室内外需要进行服务内容和服务宗旨宣传的公众场所,例如户内外公共场所广告宣传、机场车站旅客引导信息、公交车辆报站系统、证券与银行信息显示、餐馆报价信息豆示、高速公路可变情报板、体育场馆比赛转播、楼宇灯饰、交通信号灯、景观照明等。显然,LED显示已成为城市亮化、现代化和信息化社会的一个重要标志。 本文基于单片机(AT89C51)讲述了16×16 LED汉字点阵显示的基本原理、硬件组成与设计、程序编译与下载等基本环节和相关技术。2 硬件电路组成及工作原理本产品拟采用以AT89C51单片机为核心芯片的电路来实现,主要由AT89C51芯片、时钟电路、复位电路、列扫描驱动电路(74HC154)、16×16 LED点阵5部分组成,如图1所示。 其中,AT89C51是一种带4 kB闪烁可编程可擦除只读存储器(Falsh Programmable and Erasable Read OnlyMemory,FPEROM)的低电压、高性能CMOS型8位微处理器,俗称单片机。该器件采用ATMEL高密度非易失存储器制造技术制造,与工业标准的MCS-51指令集和输出管脚相兼容。由于将多功能8位CPU和闪烁存储器组合在单个芯片中,能够进行1 000次写/擦循环,数据保留时间为10年。他是一种高效微控制器,为很多嵌入式控制系统提供了一种灵活性高且价廉的方案。因此,在智能化电子设计与制作过程中经常用到AT89C51芯片。时钟电路由AT89C51的18,19脚的时钟端(XTALl及XTAL2)以及12 MHz晶振X1、电容C2,C3组成,采用片内振荡方式。复位电路采用简易的上电复位电路,主要由电阻R1,R2,电容C1,开关K1组成,分别接至AT89C51的RST复位输入端。LED点阵显示屏采用16×16共256个象素的点阵,通过万用表检测发光二极管的方法测试判断出该点阵的引脚分布,如图2所示。 我们把行列总线接在单片机的IO口,然后把上面分析到的扫描代码送人总线,就可以得到显示的汉字了。但是若将LED点阵的行列端口全部直接接入89S51单片机,则需要使用32条IO口,这样会造成IO资源的耗尽,系统也再无扩充的余地。因此,我们在实际应用中只是将LED点阵的16条行线直接接在P0口和P2口,至于列选扫描信号则是由4-16线译码器74HC154来选择控制,这样一来列选控制只使用了单片机的4个IO口,节约了很多IO资源,为单片机系统扩充使用功能提供了条件。考虑到P0口必需设置上拉电阻,我们采用4.7 kΩ排电阻作为上拉电阻。

    标签: LED 单片机 汉字 显示屏设计

    上传时间: 2013-10-16

    上传用户:ywcftc277

  • at89c52 pdf

    The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8Kbytes of Flash programmable and Erasable read only memory (PEROM). The deviceis manufactured using Atmel’s high-density nonvolatile memory technology and iscompatible with the industry-standard 80C51 and 80C52 instruction set and pinout.The on-chip Flash allows the program memory to be reprogrammed in-system or by aconventional nonvolatile memory programmer. By combining a versatile 8-bit CPUwith Flash on a monolithic chip, the Atmel AT89C52 is a powerful microcomputerwhich provides a highly-flexible and cost-effective solution to many embedded controlapplications.

    标签: 89c c52 at

    上传时间: 2013-11-10

    上传用户:1427796291

  • 常用串行EEPROM的编程应用

    常用串行EEPROM的编程应用,EEPROM是"Electrically Erasable Programmable Read-only"(电可擦写可编程只读存储器)的缩写,EEPROM在正常情况下和EPROM一样,可以在掉电的情况下保存数据,所不同的是它可以在特定引脚上施加特定电压或使用特定的总线擦写命令就可以在在线的情况下方便完成数据的擦除和写入

    标签: EEPROM 串行 编程应用

    上传时间: 2014-01-19

    上传用户:xmsmh

  • Abstract: This application note describes the program and data flash and how to erase/write the flas

    Abstract: This application note describes the program and data flash and how to erase/write the flash using the built-in utility ROM. This application note applies to the MAXQ flash-based microcontrollers that use a sector Erasable flash

    标签: application and describes the

    上传时间: 2014-12-19

    上传用户:希酱大魔王

  • SPI串行EEPROM系列中文数据手册

    说明:Microchip Technology Inc.采用存储容量为1 Kb至1Mb的低电压串行电可擦除PROM(Electrically Erasable PROM,EEPROM),支持兼容串行外设接口(Serial Peripheral Interface,SPI)的串行总线架构,该系列器件支持字节级和页级功能,存储容量为512 Kb和1Mb的器件还通常与基于闪存的产品结合使用,具有扇区和芯片擦除功能。所需的总线信号为时钟输入(SCK)线、独立的数据输入(S1)线和数据输出(SO)线。通过片选(CS)输入信号控制对器件的访问。可通过保持引脚(HOLD)暂停与器件的通信。器件被暂停后,除片选信号外的所有输入信号的变化都将被忽略,允许主机响应优先级更高的中断。整个SPI兼容系列器件都具有标准的8引脚PDIP和SOIC封装,以及更高级的封装,如8引脚TSSOP,MSOP.2x3DFN,5x6 DFN和6引脚SOT-23封装形式。所有封装均为符合RoHS标准的无铅(雾锡)封装。引脚图(未按比例绘制)

    标签: spi eeprom

    上传时间: 2022-06-20

    上传用户:fliang