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Is it possible for GPIO output logic 1 lower than3.3V of BF548 (EZ-Kit Lit)?

Question asked by qingshan on Apr 26, 2010
Latest reply on Apr 26, 2010 by JoeT

Is it possible for GIO output level lower than 3.3V like 2.5 or 1.8V of BF 548(EZ-kit Lit)?

I am using GPIOs of BF548 EZ-kit to control external multiplexers to switch channels. I would like GPIO output level lower than 3.3V in logic 1(2.5V/1.8V) due to lower voltage level controls on multiplexers may reduce charges during switching (this is very important for my project).

Could you please advise me what & how to change BF548 GPIO logic level in software or hardware settings on BF548 EZ-kit lit?

 

Many Thanks in advance.

 

Qingshan

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