Kinetis MicrocontrollersのトピックK64 ADC Voltage Reference Configurations

K64 ADC Voltage Reference Configurations

aberger — Thu, 15 Jun 2023 19:48:27 GMT

The #MK64FN1M0VMD12 on-board ADC is configurable to use either (VREFH and VREFL)or (VALTH and VALTL) as the voltage reference, via the ADCx_SC2.REFSEL register bits. While VREFH and VREFL are available as dedicated pins, I cannot find what pins are connected when (VALTH and VALTL) are selected as the voltage reference.

The Reference Manual states the following:

But VALTH and VALTL are never mentioned in the datasheet. Does selection of the "alternate voltage reference" simply use VDDA and VSSA?

Re: K64 ADC Voltage Reference Configurations

Robin_Shen — Fri, 16 Jun 2023 00:22:56 GMT

Here the chip configuration information refers to section 3.7.1.6 ADC Reference Options

Best Regards,
Robin
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