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Zia Banihashem
12/22/05 07:42
Read: 887 times
Tehran
Iran


 
#105750 - Something strange with DS12887
Hi friends
I was trying to use DS12887 and I secceeded but I found something strange with it.
According to the datasheet for reading and writing time The 7th bit of register B (SET) should be Set and Reset you know, but I do it without any setting and resetting, why???
And I need a piece of information for using the data bus.
when using an external RAM or ROM with 8051, Port 0 and 2 prepare address and data and they can't be used for any other purpose, my question is: Even if we use timing and can't we share the data BUS( port 0)? for exmaple when we have a RTC , a LCD display, an A/D can't we share the Data BUS? I thing it's possible, what's your idea???

List of 5 messages in thread
TopicAuthorDate
Something strange with DS12887      Zia Banihashem      12/22/05 07:42      
   MMIO      Erik Malund      12/22/05 08:42      
   DS12887 SET bit      Sasha Jevtic      12/23/05 01:33      
      DS12887 SET bit      Zia Banihashem      12/25/05 09:35      
         Do not manipulate during update cycle      Sasha Jevtic      12/26/05 12:53      

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