What are high level voltage and low level voltage for GPIO? #117
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ivan-ushakov
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nRF52840 MCU specification says that "Input high voltage" minimum is 0.7 x VDD and maximum is VDD. VDD could be 3.3 and 5 volts. I connect device to USB power bank so I suggest that VDD is 5 volts. But in your specification I see that IO operation voltage is 3.3. So what VDD I should use for GPIO input voltage calculations?
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