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PGroe.2
Associate III
November 8, 2020
Question

STM32G071 Temperature Sensor stabilization time

  • November 8, 2020
  • 2 replies
  • 1290 views

Hi

In CubeIDE the temperature sensor stabilization time for my STM32G071 is defined by: stm32g0xx_ll_adc.h

#define LL_ADC_DELAY_TEMPSENSOR_STAB_US ( 10UL)

But in the Datasheet I see at least 15µs max for Tstart(ts_buf) and for Tstart itself its already 120µs max...

0693W000005AhmIQAS.pngNow I am confused, shall I take the 10µs in the define or should I change it?

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2 replies

TDK
November 8, 2020

Seems inconsistent. I would change it to 120. It's not real clear to me what the difference is between those two values--t_start vs t_start(ts_buf).

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PGroe.2
PGroe.2Author
Associate III
November 8, 2020

I would go for the 120us too.

If I implement the 120us delay for the temp sensor, is it correct that I dont need an extra delay for lets say VREFINT to start up?

VREFINT needs 12us startup time, so this should be theoretically covered by the 120us delay?