In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Electronegativity wrote:

Hi guys (gals?), I am planning to hook up an SX20AC/SS chip to Lumex LED display.
The display is rated for 25mA maximum continous current per segment or 150mA for < 10uS.

 

If I run the display cathode to ground and hook SX20 outputs directly to the segment pins will it fry the display?

 

What if I put a resistor between the cathode pin and ground?

 

I also noticed that the SX20 has 2 pins each for Vdd and Vss; do I need to hook all 4 of them up?

 

Thanks,

-Alexander

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