标题: [NUC240] Use ADC to Measure AVDD [打印本页] 作者: admin 时间: 2022-7-7 11:48 标题: [NUC240] Use ADC to Measure AVDD Application: This example code use ADC to measure internal Bandgap voltage(VBG) and use VBG to calculate AVDD.
BSP Version: NUC230/240 Series BSP CMSIS V3.01.001
Hardware: NuEdu-EVB-NUC240 v1.0
A temperature independent voltage reference circuit inside microcontroller can produce a constant voltage called internal bandgap voltage (VBG). VBG is one of the ADC reference voltages.
In this example code, we use ADC channel 7 to measure the VBG. We then use the measured value to calculate AVDD value by using below formula. This method requires the VREF pin connects to AVDD pin.