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'[EE]: MAX7221 LED Display Driver'
2001\11\27@055204 by Russell McMahon

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MAX7221 8 digit x 8 segment LED display driver

May be well known to many but just introduced to me by a friend.
Where the micro is too busy etc, here's an 8 x 8 LED display driver capable
of driving 8 x 8 segment displays or 64 individual LEDs. Even more than this
with some extra effort.
3 wire serial interface.

Not overly cheap at $US5.63 from Digikey.
Cheaper to use a PIC :-)


Datasheet

       http://dbserv.maxim-ic.com/quick_view2.cfm?pdf_num=1339

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2001\11\27@062159 by cdb

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Ah if only I could get my PIC to count I wouldn't need one of these whizz
bang ICs.

Still funs begins now I got my cheapo VFD displays for U$15.00

colin

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2001\11\27@131349 by steve

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> MAX7221 8 digit x 8 segment LED display driver

> Not overly cheap at $US5.63 from Digikey.
> Cheaper to use a PIC :-)

The price is pretty good if you need all 64 LEDs and they are close
together (ie. 8 x 7 seg digits). If the LEDs are scattered around the
board it starts to use up real estate running the tracks.

I have a board with 3 of those 10 led bargraphs and not much
space. The TI Power logic shift registers (US$0.83) are a good
solution there.

Steve.


======================================================
Steve Baldwin                Electronic Product Design
TLA Microsystems Ltd         Microcontroller Specialists
PO Box 15-680, New Lynn      http://www.tla.co.nz
Auckland, New Zealand        ph  +64 9 820-2221
email: stevebspamKILLspamtla.co.nz      fax +64 9 820-1929
======================================================

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2001\11\28@113517 by Jinx

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> Ah if only I could get my PIC to count I wouldn't need one of these
> whizz bang ICs.

What's you matter with the counting ?

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