2 Replies Latest reply on Mar 23, 2016 7:07 AM by david.pilcher_1514011

    Open Drain max voltage

    david.pilcher_1514011

      Hi,

         

      On a PRoC BLE, we can configure a GPIO in Open Drain, pulls low.  What is the maximum voltage we can put on the pin and sink?

         

      E.g. if VCC is 1.8V, can we sink a 3.3V LED?  The electrical characteristics mentions one thing to do with GPIOs - a tolerance of +0.5V, and as a digital input I can see why that would be, but how about as an Open Drain?

         

      Thanks, Dave