1 Reply Latest reply on Aug 15, 2017 6:48 AM by user_342122993

    Is it safe to drive the digital pins of 5V sensor with 3.3V PSOC pin?

    kelvinxu_2593591

      I have a sensor with 5V supply and two digital pins, supposedly 5V levels, and a 4.7V analog output. 

         

      My PSOC is tied to 3.3V supply by hardware. 

         

      1) Is it safe to drive these two digital pins with 3.3V outputs from PSOC?

         

      2) Is it ok to sample the 4.7V analog output with the ADC with 6X Vref, i.e. 6.1V? I read that the ADC can measurement up to 6 times of internal reference voltage.