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Graduate II
August 19, 2024
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STM32F446 Tempreature Sensor, ADC

  • August 19, 2024
  • 2 replies
  • 814 views

I am trying to read ADC value of internal tempreature sensor of my STM32F446 board. The data sheet says that the temp sensor is connected to ADC1_IN18 (page no. 37/198), but there is no such pin in STM32F446xx pin and ball descriptions. Can someone please help me from which pin can I extract the analog value of temperature sensor ?? 

Thanking you in advance..

    This topic has been closed for replies.
    Best answer by mƎALLEm

    Hello @Yoshimitsu_Manji_clan  and welcome to the community,

    You need to refer to the reference manual of the product RM0390 / figure 79

    SofLit_0-1724057165753.png

    As you can see some ADC inputs (Temperature sensor, Vref, VBAT) are connected internally and not exposed on pins. 

     

    2 replies

    Super User
    August 19, 2024

    As it's an internal sensor, it is not brought out to a pin, and is connected to ADC internally.

    JW

    mƎALLEmAnswer
    Technical Moderator
    August 19, 2024

    Hello @Yoshimitsu_Manji_clan  and welcome to the community,

    You need to refer to the reference manual of the product RM0390 / figure 79

    SofLit_0-1724057165753.png

    As you can see some ADC inputs (Temperature sensor, Vref, VBAT) are connected internally and not exposed on pins.