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STM32F446 Tempreature Sensor, ADC

Yoshimitsu_Manji_clan
Associate II

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..

1 ACCEPTED SOLUTION

Accepted Solutions
SofLit
ST Employee

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. 

 

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.

View solution in original post

2 REPLIES 2

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

JW

SofLit
ST Employee

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. 

 

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.