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Jan Waclawek
09/08/15 12:44
Read: 935 times

#190565 - shift registers
Responding to: Raghunathan's previous message
We've done this sort of things using a chain of shift registers (both with '595 and with dedicated shift-latch-current-source chips, in several different designs - 16x3xbi-color, 12x4 - I don't remember all of the setups). Large physical dimensions required certain clock shaping. Power distribution and mechanical setup was not trivial either... Yes, all driven from a vanilla '51.

If I recall correctly, some of them were multiplexed design, but I wouldn't do that again, especially since the shift-latch-current-source chips are relatively cheap nowadays.


List of 7 messages in thread
One 89V51RD2 and 12 nos 4 digit LED modules      Raghunathan      09/08/15 08:23      
   shift registers      Jan Waclawek      09/08/15 12:44      
   LED drivers      Jim Granville      09/08/15 15:51      
      Why not many MAX7219 drivers?      Raghunathan      09/09/15 04:44      
         Sure, if you already have 12 x MAX7219       Jim Granville      09/10/15 20:24      
            Thanks to all those who responded      Raghunathan      09/12/15 20:47      
   might have been ridicolous, but      Erik Malund      09/09/15 06:44      

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