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Visitor
September 21, 2026
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Stabilization/Warm-up time needed for STM8S208CBT6 when interfaced with ADC

  • September 21, 2026
  • 7 replies
  • 22 views

Hi,

Is there any stabilization or warm-up time needed by STM8S controller when interfaced with ADC for calibration?

Usually for ADCs there is a warm-up time, so wanted to know if this MCU also has a warm-up time.

Best answer by Andrew Neil

Then you’ll need to consult the documentation (datasheet, etc) for the ADC(s) in question - it has nothing to do with the microcontroller.

The microcontroller just sees a standard SPI digital interface - no stabilization, warm-up or calibration needed for that!

7 replies

Peter BENSCH
ST Technical Moderator
September 21, 2026

Welcome ​@despicableme, to the community!

I am not aware of any warm-up time for an ADC; please share a few references / URLs about it.

The STM8S208 also has a 10-bit ADC, whose calibration requirements are not as high as those of 12-bit ADCs, for which no warm-up is needed either.

Regards
/Peter

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Visitor
September 21, 2026

Hi Peter,
Thanks for the reply, my query for calibration of Analog Module (current input), generally the devices need certain warm-up time at room temperature before calibration. 

Hence I asked when SMT8S is used with ADC IC does it have any requirement for warm-up time before calibrating the analog module for accuracy.

 

Thanks

Andrew Neil
Super User
September 21, 2026

when interfaced with ADC

Are you talking about the internal ADC within the STM8, or an external device?

 

 

 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Visitor
September 21, 2026

Hi Andrew,

I am referring to external ADC interfaced with STM8S over SPI.

Andrew Neil
Andrew NeilBest answer
Super User
September 21, 2026

Then you’ll need to consult the documentation (datasheet, etc) for the ADC(s) in question - it has nothing to do with the microcontroller.

The microcontroller just sees a standard SPI digital interface - no stabilization, warm-up or calibration needed for that!

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.