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Andy Neil
01/16/13 06:47
Read: 742 times

#189189 - Got it!
Responding to: Titty John's previous message
Titty John said:
got the details of micro-controller from datasheet. 8952 can not drive so many LED at a time.
Under steady state (non-transient) conditions, IOL must be externally limited as follows:
Maximum IOL
per port pin: 10 mA
Maximum IOL
per 8-bit port:
Port 0: 26 mA Ports 1, 2, 3: 15 mA
Maximum total IOL for all output pins: 71 mA

That's it! Not so hard, eh?!

so i need to use some kind of drive circuit has to be used.


Any suggestion regarding the LED driver circuit.

How about looking at what all the hundreds of other LED cube projects on the interweb use...?

List of 9 messages in thread
5x5x5 LED Cube       Titty John      01/15/13 04:24      
   RTFM!      Andy Neil      01/15/13 06:39      
   well,      Erik Malund      01/15/13 09:32      
   re: driving 25 leds      Jacob Boyce      01/15/13 11:11      
      Assumption!      Andy Neil      01/15/13 12:18      
         re:assumption      Jacob Boyce      01/16/13 08:06      
      from 8952 datasheet      Titty John      01/16/13 05:12      
         Got it!      Andy Neil      01/16/13 06:47      
         re: circuit      Jacob Boyce      01/16/13 13:27      

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