HOLD

共 47 篇文章
HOLD 相关的电子技术资料,包括技术文档、应用笔记、电路设计、代码示例等,共 47 篇文章,持续更新中。

使用SpecctraQuest仿真时序问题

通常我们在计算时许问题时,一般重点遵循以下两个条件以保证足够的Timing Margin: 1. Tflightmax + Driver(Tcomax) + Skew + Jitter + Crosstalk + Receiver(Setup)< Clock Period 2. Tflightmin + Driver(Tcomin) - Receiver(Hold) - Skew - Cros

ELIS-1024 线性图像传感器

The ELIS-1024 Linear Image Sensor consists of an array of high performance, low dark current photo-diode pixels. The sensor features sample and hold capability, selectable resolution and advanced po

HS-3282 DataSheet

The HS-3282 is a high performance CMOS bus interface circuit that is intended to meet the requirements of ARINC Specification 429, and similar encoded, time multiplexed serial data protocols. This

AL422B

The AL422B consists of 3M-bits of DRAM, and is configured as 393,216 words x 8 bit FIFO (first in first out). The interface is very user-friendly since all complicated DRAM operations are already ma

A metastability primer

When using a latch or flip-flop in normal circumstances (i.e., when<BR>the device’s setup and hold t

Sample Hold Has Zero Droop and Infinite Hold

Sample Hold Has Zero Droop and Infinite Hold

以SHC5320为例,介绍器件引脚排列上的考虑可以避免信号耦合和减低采样 保持的基座错误

In most sampling systems, the inherent characteristics of the<BR>sample-hold dictate its overall per

移植到Symbian平台C-C.开放移动开发.rar

I originally started writing this book as part of the Symbian Press Technology series back in May 2008. Since that time, a lot has changed in the mobile software world, particularly for those workin

基于C8051F020单片机的双接口OLED控制器设计与实现

<p>文中提出一种基于C8051F020单片机的双接口OLED控制器的设计与实现方案。该设计以C8051F020为核心控制单元,带有两个OLED接口的印刷电路板。在写命令函数和写数据函数中调用判忙函数,保证驱动芯片在不忙状态下接收控制指令。合理排列片选、写使能、并行数据等信号的发送顺序,满足地址/数据的建立时间和保持时间。实验结果证明两块OLED可以准确显示预留信息,具有亮度高、响应速度快、可视角

数字电路中BUS HOLD功能的应用研究

Quartus II中对引脚端口状态定义方式的bus hold,以及其他电路设计中增加总线电平保持功能的使用方法和优缺点研究。

fpga初学者的一些必备基础知识

fpga初学者的一些必备基础知识 1、FPGA 建立时间(setup time)&保持时间(hold time)&竞争和冒险&毛刺 2、Fpga 设计流程 3、信号与变量的区别

最全硬件工程师笔试试题集

<p>1、下面是一些基本的数字电路知识问题,请简要回答之。</p><p>(1) 什么是Setup 和Hold 时间?</p><p>答:Setup/Hold Time 用于测试芯片对输入信号和时钟信号之间的时间要求。</p><p>建立时间(Setup Time)是指触发器的时钟信号上升沿到来以前,数据能够保持稳</p><p>定不变的时间。输入数据信号应提前时钟上升沿(如上升沿有效)T 时间到达芯片,

ATT7039用户手册中文版

<p>ATT7039是ATT7037的精简版本,片内集成单相计量、处理器、电源管理,时钟管理,PLL,JTAG</p><p>调试等功能。</p><p>基于8位CPU52设计,具有8052兼容指令集和总线结构</p><p><br/></p><p>单Cycle的CPU</p><p><br/></p><p>片内集成PLL倍频电路</p><p><br/></p><p>片内集成丰富的存储器资源,包括30K的

L6470步进电机驱动IC开发资料

<p>以安装文件提供,先执行安装文件,然后到安装目录,打开需要的资源,程序是IAR的,编译能通过,程序注释很清晰,适合相关人员学习。</p><p>CPU硬件平台:ST STM32F105VB</p><p>dspin.h 文件,对寄存器结构做了详细的定义,对程序的易读性有很大的帮助:</p><p>typedef struct</p><p>{</p><p>&nbsp; uint32_t ABS_POS

SPI串行EEPROM系列中文数据手册

<p>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

基于STM32单片机控制的智能水杯设计

<p>本设计介绍了一种基于STM32单片机控制的智能水杯,可利用插口式电源或无线充电底座为加热器提供能量,并在达到某种饮品所需温度时进行保温。水杯内置充电电池,可选用USB接口或无线充电。在水杯内部设置无线模块,用户利用手机App与水杯进行匹配进行加热操作,加热完后水杯会通过手机App和液晶显示屏实时反馈液体温度,通过指示灯显示电量情况等,给用户进行提醒。该智能水杯设计创新,实用价值较高。</p>

600w變壓器计算

<p>那么我们可以进行如下计算:</p><p>1,输出电流Iout=Pout/Udc=600/400=1.5A</p><p>2,最大输入功率Pin=Pout/η=600/0.92=652W</p><p>3,输入电流最大有效值Iinrmsmax=Pin/Umin=652/85=7.67A</p><p>4,那么输入电流有效值峰值为Iinrmsmax*1.414=10.85A</p><p>5,高频纹波电

Pro Arduino

Since its release, Arduino has become more than just a development platform; it has become a culture built around<br /> the idea of open source and open hardware, and one that is reimagining computer

Power Over Ethernet

December 2007, San Jose, California: It seems a long time ago.<br /> I walked into a big networking company to head their small<br /> Power over Ethernet (PoE) applications team. Surprisingly,<br /> I

Cooperative+Communications

Cooperation is not a natural characteristic attributed to humans. The typical human horizon is focused<br /> on short-term gains, which might be due to our instinct-driven subconscious occupying a gra