I'm considering using HVI pin for wake-up function. the input voltage of the wake-up signal would be 12~14V
I have a few question for it..
1. is it needed to be a digital input to detect a wake up signal (DC 12V)?
2. in the datasheet, the structure of internal pull down resistor is this..
HV supply(12V) ----------- [ 10K ] ----- [ HVI pin ] ------ [ 40K ] ------ [ 610K / 1050K ] -----GND
SW ------ GND Digital in
simply calculated this regarding as voltage divider, in case of the variable resister is 610K,
Digital in is 11.1V and 1050K, 11.454V..
this is not a mcu voltage level.. is this the right way for designing HVI?
if this is wrong, how to calculate this?
extra) if you have a example source for HVI or know where it is, please notiy me..