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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Urgent! ABout Storing data in Nonvoliate ram</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/16149/urgent-about-storing-data-in-nonvoliate-ram</link><description> I am using the DS1643 
which contain both non voliate ram and a RTC. 
 
also, in my project, i use the timer 1 interrupt to counter the machine operation time: 
unsigned char second, min, hour; 
 
i use 
XBYTE[0x1ffe0]=second; 
XBYTE[0x1ffe1]=min; 
XBYTE</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Urgent! ABout Storing data in Nonvoliate ram</title><link>https://community.arm.com/thread/39926?ContentTypeID=1</link><pubDate>Thu, 22 May 2003 17:40:32 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:8d095c0d-572d-4fd1-ad1f-84291d9b3a79</guid><dc:creator>Richard Collett</dc:creator><description>&lt;p&gt;Are you sure there is no code in your system which initialises XDATA after a cold reset?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Urgent! ABout Storing data in Nonvoliate ram</title><link>https://community.arm.com/thread/55113?ContentTypeID=1</link><pubDate>Thu, 22 May 2003 08:29:47 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:90078863-76bb-4798-85c7-b870fa4c17e8</guid><dc:creator>HansBernhard Broeker</dc:creator><description>&lt;p&gt;You don&amp;#39;t seem to know what the original poster is talking about.&lt;br /&gt;
&lt;br /&gt;
That chip &lt;b&gt;is&lt;/b&gt;, for all means and purposes, nonvolatile RAM. More precisely it&amp;#39;s battery-backed RAM, just like kind used to store configuration data in PCs.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Urgent! ABout Storing data in Nonvoliate ram</title><link>https://community.arm.com/thread/39927?ContentTypeID=1</link><pubDate>Thu, 22 May 2003 07:47:35 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:c779d7cb-0fff-4ec1-80f0-ab352253f020</guid><dc:creator>terrance peiris</dc:creator><description>&lt;p&gt;Hi Guy, there no such think called Non Volatile RAM during power off mode.&lt;br /&gt;
&lt;br /&gt;
In RAM, only first few location will be clear and others not clear, So we can use that area to keep some variable for cold start.&lt;br /&gt;
But in warm start:If you really want to keep your data even during power off mode then you must use EEPROM.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>