Questions and discussions about the hardware aspects of the TD RF modules, boards and accessories.
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Joined: Tue Jun 16, 2015 6:13 am

GPIO out voltage level

by francois Thu Feb 25, 2016 9:05 am

I did configure the USR1 GPIO with a high drive strength.
My V_supply is 3.3 volt.
What is supposed to be GPIO voltage ouput? 3.3 volt or 3volt?
I was expected 3.3V but it seems to be 3volt. Is that correct?
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Posts: 145
Joined: Mon May 11, 2015 7:47 am

Re: GPIO out voltage level

by lcheminade Fri Feb 26, 2016 8:40 am

Expected output is VDD. Max current load is around 15mA at highest drive strength..
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