Operating XMC1300 ADC in slow standby mode

Dear Jason,

I assume the reason is the wake up time for the analog part of the ADC.
The wake up time is approximately 15us.
To compensate the wake up time you can extend the sampling time.

Atached a project to do so:

* This example shows the use case of Slow Standby mode (ANONS = 01B).
* The converter enters a power save mode while no activity is required. It automatically
* returns to normal operation if a conversion is requested.
* The wake up time is approximately 15μs.
* (With the APP the sampling time is set to ~15us.)
*
* The PWM_CCU4_0 is gating the ADC measurement with 1 Hz and 50% DC. So the project is sampling 500ms and 500ms in power down.
* In the picture output.jpg you can see that the ADC resultA is not changed in the first half and permanently updated in the second half.
*
* The CCU4_1 is capturing the Timer value and the ADC resultA in a 1kHz time frame. Also the uC Probe update is handled in this ISR.
*
* As input the Potentiometer at P2.5 at the BootKitXMC1300 is used.

Best Regards
Eric

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• ADC_slowStandby_v1.zip‎ (12.00 MB)