How is the Maximum VDD of 4V Determined for MCUs?
By examining the absolute maximum ratings table of current mainstream MCU manufacturers, we find that VDD is limited to 4.0V: Parameter STM32 (F1/F4) GD32 (F1/F3) National Technology (N32G/N32L) VDD / VDDIO -0.3V to +4.0V -0.3V to +4.0V -0.3V to +4.0V Why is this the case? Here are several core factors that determine this voltage value, … Read more