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???
12/05/06 13:21
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 		 #128990 - I2C extenders
Responding to: ???'s previous message
Ap Charles said:
but you could have used I2C bus port extenders instead of 8255 ? .
AP


Yes I have thought about it, but the processor I used did not have hardware I2C support. Generating bit-banging I2C signals in software costs processing power and decreases the max transfer rate. Thats why I choose the 8255 and put it on the data bus that whas needed for the external RAM.

Dennis.

List of 35 messages in thread
TopicAuthorDate
Free 8051 source code and State Machine generator            01/01/70 00:00      
   do you give free technical assistance?            01/01/70 00:00      
      re            01/01/70 00:00      
   yet another... but why not?            01/01/70 00:00      
      not really            01/01/70 00:00      
         No 8255 problems for me.            01/01/70 00:00      
            No 8255 problems for me.            01/01/70 00:00      
               I2C extenders            01/01/70 00:00      
                  I2C extenders            01/01/70 00:00      
   I'll give it a look            01/01/70 00:00      
      visualSTATE            01/01/70 00:00      
         visualSTATE; BOUML            01/01/70 00:00      
            visualSTATE; BOUML            01/01/70 00:00      
            Impressive tool!            01/01/70 00:00      
         You ain't seen nothin' yet...            01/01/70 00:00      
   State Machine Generator            01/01/70 00:00      
      Re: State Machine Generator            01/01/70 00:00      
         Re: Re: State Machine Generator            01/01/70 00:00      
   hardware            01/01/70 00:00      
      Components            01/01/70 00:00      
         hardware            01/01/70 00:00      
   Easy to use?            01/01/70 00:00      
      Cat Aided Design?            01/01/70 00:00      
         It's just a FAD...            01/01/70 00:00      
            I prefer RAM            01/01/70 00:00      
            FAD            01/01/70 00:00      
               The best cat I ever knew...            01/01/70 00:00      
      CDB            01/01/70 00:00      
      off topic            01/01/70 00:00      
      Nice pussy            01/01/70 00:00      
   Rhapsody            01/01/70 00:00      
      Totally different league!            01/01/70 00:00      
         Rhapsody v. Statemate v. VisualState            01/01/70 00:00      
            $tatemate -- never mind            01/01/70 00:00      
   Free from Telelogic            01/01/70 00:00      

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