P0800EA

描述

由于数据在写入Flash后还有较长的编程时间，一页的编程时间典型值为300μs，最大值为700μs。数据在存储上不能有任何的停顿，否则就会丢失数据，所以不能使用R／B信号进行设计。为了系统更加可靠，选择最大编程时间700μs。两次对同一组Flash进行写操作的时间间隔为700μs+81.92μs=781.92μs，一页的数据写到双口RAM要

用25ns×2048=51.2μs。总时间除以写一页数据的时间：781.92／51.2=15.3μs，说明一个循环内至少需要16组Flash才能满足要求。所以在设计中，对于每路A／D采样通道都用一片FPGA作为缓冲和控制系统，在每片FPGA内部都采用4个缓冲区，每个缓冲区对应一条外部总线，每条总线上挂有4组K9F2G08U0M×2(将两片Flash并成16位操作，即把I／O并成16位，共用控制信号线)

欧美品牌停产的，常用的“PLC”备品备件

我司产品应用于以下领域：

1,《发电厂DCS监控系统》

2,《智能平钢化炉系统制造》

3,《PLC可编程输送控制系统》

4,《DCS集散控制系统》
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5,《智能型消防供水控制系统》

6,《化工厂药液恒流量计算机控制系统》

7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列

本特利，英维思，伍德沃德，福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐，ACSO，力士乐等各大品牌的DCS系统配件，机器人系统配件，大型伺服系统备件。

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