STM32F446 Tempreature Sensor, ADC

Yoshimitsu_Manji_clan · ‎2024-08-19

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..

SofLit · ‎2024-08-19

Hello @Yoshimitsu_Manji_clan and welcome to the community,

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

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

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

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waclawek.jan · ‎2024-08-19

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

JW

SofLit · ‎2024-08-19

Hello @Yoshimitsu_Manji_clan and welcome to the community,

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

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

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.