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MPC5744, How to read the external supply 's voltage through software layer?

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MPC5744, How to read the external supply 's voltage through software layer?

‎11-27-2022 08:23 AM
369 Views
ChenBowen
Contributor II

Dear Expert：

      Normally, the external supply is 12V.  Now I need to read the real supply voltage in software, how to make it ?

                                                                                                                                

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‎11-27-2022 10:56 PM
360 Views
lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

this is usually solved by simple resistor voltage divider which scales the voltage to range which can be read by the MCU (0-5V or 0-3.3V).

Regards,

Lukas

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