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常见问答
How to use ADC internal reference voltage? Issue Date:2018-01-15
As shown below, if only the internal voltage reference mode is enabled, it will be affected by the external voltage VREF pin. Therefore, floating the external voltage VREF can switch to the internal voltage.

| Products: | Microcontrollers ,Arm Cortex-M0 MCUs ,Arm Cortex-M4 MCUs |
|---|---|
| Applications: | |
| Function: | Peripherals,Analog,ADC,Vref |