Hello all,
Recently I am doing project of measuring temperature. The target is a battery operated device. I need to use a comparator to measure supply voltage and sends out a warning LED signal to users if the supply voltage is lower than 3V. The comparator is from the MCU which is operated in 3.3V by four AA batteries (6V) using DC-DC converter. I want to ask would the MCU burn if the 3.3V operated comparator measures the supply voltage which is more than 3.3V (for example 5V). Thanks!
BR,
Terry
Recently I am doing project of measuring temperature. The target is a battery operated device. I need to use a comparator to measure supply voltage and sends out a warning LED signal to users if the supply voltage is lower than 3V. The comparator is from the MCU which is operated in 3.3V by four AA batteries (6V) using DC-DC converter. I want to ask would the MCU burn if the 3.3V operated comparator measures the supply voltage which is more than 3.3V (for example 5V). Thanks!
BR,
Terry