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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>AT89C51 and MT8888C</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/18151/at89c51-and-mt8888c</link><description> Hi friends: 
Have to ask you other questions. Right now I am running my program on my experiment board. 
After resetting AT89C51, Should the initial values of P0 port be 0Xff? Why mine are 0x00? 
Should I connect P0 port with pull up resistors even I</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: AT89C51 and MT8888C</title><link>https://community.arm.com/thread/43034?ContentTypeID=1</link><pubDate>Tue, 26 Oct 2004 07:38:29 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:a03f7eb2-9db8-4833-ad28-8ea6cb0b78b7</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;This has nothing to do with Keil tools.&lt;br /&gt;
&lt;br /&gt;
As always, your first port of call should be the manufacturer&amp;#39;s website; in this case&lt;br /&gt;
&lt;a href="http://products.zarlink.com/product_profiles/MT8888C.htm" target="_blank"&gt;http://products.zarlink.com/product_profiles/MT8888C.htm&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
There you will see an application note:&lt;br /&gt;
MSAN-145 - &lt;b&gt;How to Interface Zarlink Components to Parallel Bus CPUs&lt;/b&gt;&lt;br /&gt;
&lt;a href="http://assets.zarlink.com/AN/msan145.pdf" target="_blank"&gt;http://assets.zarlink.com/AN/msan145.pdf&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;
There is a subtle hint for you in the title...&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>