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Observer daitribk
Observer
4,434 Views
Registered: ‎09-27-2009

How to scan 7 segment leds in spartan3 kit

I want to use 2 of  four 7 segment leds at the same time.

Could you give me a mothod to do?

thanks for reading

best regards,

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3 Replies
Professor
Professor
4,420 Views
Registered: ‎08-14-2007

Re: How to scan 7 segment leds in spartan3 kit

Did you look at page 15 of the User Guide (ug130).  It explains how to drive the

digits by selecting one four digit lines (active low, 0 = selected), and driving the

character you want on the 7 segment lines and decimal point (also active

low, 0 = light the selected segment).  To use more than one digit at a time you

need to time-division multiplex.  To avoid smearing at high refresh rates, you

should shut off all segments before changing the digit select line.

 

HTH,

Gabor

-- Gabor
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Observer daitribk
Observer
4,394 Views
Registered: ‎09-27-2009

Re: How to scan 7 segment leds in spartan3 kit

please send to me this UG.

Could you give this source code?

thanks for all.


Message Edited by daitribk on 01-06-2010 08:01 AM
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Professor
Professor
4,388 Views
Registered: ‎08-14-2007

Re: How to scan 7 segment leds in spartan3 kit

The user guide is here:

 

UG130

-- Gabor
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