8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes : Forum / topic http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2008 Rickey's World contact@nospam.com (Ajay Bhargav) contact@nospam.com (Ajay Bhargav) Thu, 08 Jan 2009 22:12:01 -0800 Thu, 08 Jan 2009 22:12:01 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php interfacing p89c51ed2 with ds12c887 rtc http://www.8051projects.net/forum-t1066.html This is venkat, i am trying to interface the rtc 12887 with p89c51ed2 as per the circuit and the code given in the mazidi book. After initializing and setting the rtc to update the time, I am getting some defualt junk vlaues, even if i remove the rtc iam getting the junk value in hyperterminal. help me please , Thanking you,]]> Tue, 19 Jun 2007 21:02:39 -0700 http://www.8051projects.net/forum-t1066.html Re: interfacing p89c51ed2 with ds12c887 rtc http://www.8051projects.net/forum-t1066.html
CODE:
Controller      DS12887
P0                AD[7:0]
ALE               AS
RD                DS
WR               R/W

You can connect CS to permanent ground if you are not using any other memory IC, if you are using then use a decoding logic. Hope this helps..
Please click on thanks button if you are satisfied ]]> contact@nospam.com (Ajay Bhargav) Wed, 20 Jun 2007 00:18:08 -0700 http://www.8051projects.net/forum-t1066.html Re: interfacing p89c51ed2 with ds12c887 rtc http://www.8051projects.net/forum-t1066.html contact@nospam.com (Ajay Bhargav) Wed, 20 Jun 2007 05:15:57 -0700 http://www.8051projects.net/forum-t1066.html Re: interfacing p89c51ed2 with ds12c887 rtc http://www.8051projects.net/forum-t1066.html contact@nospam.com (Ajay Bhargav) Wed, 20 Jun 2007 06:01:29 -0700 http://www.8051projects.net/forum-t1066.html