Posted on June 11, 2018 at 20:22I don't feel like that data sheet is explicit. I understand that the ADC pins are 5 Volt tolerant when the ADC Reference is 5V, but I guess this is mostly for ADC register conversion reasons, not hardware?. ADC pads are multiplexed with GPIO. This leads me to believe that maybe the hardware is tolerant, at least prior to mux. Based on how vague the datasheet is, it wouldn't be wise for me to assume that any of the GPIO is 5 Volt tolerant, even if the pin is tolerant when configured for ADC. I'm not using any ADC, and I understand that there is a difference between accepted logic levels, verse actual hardware tolerance. Is there a more definitive answer, are GPIO input pins 5 Volt TTL tolerant?
VDD_HV_ADR max is 6.4V
VDD_HV_IO max is 4.5V <- this serves as an input reference and output current source (i think).
GPIO [Input] max is ?
