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???
02/20/08 15:48
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#151210 - very valid point
Responding to: ???'s previous message
suggest the 8 and 16 bit I2C solutions because it seems to strike a good balance toward placing the I/Os near their targeted usage area
I actually recall doing just that in lieu of a "plethora of I/O chip" for the reason Michael states. If I recall correctly you can have 8 8 bitters or 4 16 bitters (or a mix) on the same IIC bus. Of course, IIC ports are only a solution "if your process have the time"

Now, if this is not the major concern I'd still go for an 8-porter.

Erik

List of 16 messages in thread
TopicAuthorDate
lots of i/o            01/01/70 00:00      
   There are 16-bit Expanders            01/01/70 00:00      
      The + and - of the slave processor            01/01/70 00:00      
         the logical solution is to ...            01/01/70 00:00      
   Roll 'yer own, and get exactly what you want            01/01/70 00:00      
      why bother            01/01/70 00:00      
         you're right, if "conventional" I/O ports are OK            01/01/70 00:00      
   Max 7301            01/01/70 00:00      
   lots of i/o part 2            01/01/70 00:00      
      Theres a 40way NXP I/O expander            01/01/70 00:00      
      Simple Distributed Concept            01/01/70 00:00      
         very valid point            01/01/70 00:00      
            For sure.....the multi-port job....            01/01/70 00:00      
               lots of i/o part 3            01/01/70 00:00      
                  I love slave processors            01/01/70 00:00      
                  MCP23008            01/01/70 00:00      

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