https://devzone.nordicsemi.com/f/nordic-q-a/126482/saadc-sampling-modes-and-power-consumption-trade-offsHello, I have seen many topics regarding the SAADC sampling modes and power consumption trade-offs on DevZone, but none of them clearly address my concerns. I would like to ask a couple of questions that could ultimately serve as a guideline for choosingen-USTelligent Community 13Tue, 13 Jan 2026 14:20:16 GMThttps://devzone.nordicsemi.com/thread/558601?ContentTypeID=1Tue, 13 Jan 2026 14:20:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:94fc5c38-132c-4e4f-bb33-cf9b59b50dd6JONATHAN LL<p>Hi,<br /><br /></p> [quote user=""]Is all of that true? [/quote] <p>Yes.<br /><br /></p> [quote user=""]Are there any methods to run&nbsp;<strong>Continuous Sampling&nbsp;</strong>without bothering the CPU?[/quote] <p><span>Not any other methods than the ones mentioned</span>.<br /><br /><br /></p> [quote user=""]<p>Is it possible to delegate one-shot sampling to hardware by using PPI + RTC, like this:</p> <p>In other words, is there a way to achieve fixed-rate sampling controlled by hardware without EasyDMA, where each sampling sequence is a one-shot operation (START, SAMPLE, STOP) and the interrupt is raised only after collecting X samples?</p>[/quote] <p><span>No, with this approach, the new sample will overwrite the last sample every time it is triggered. There is no auto-increment in the buffer pointer in the SAADC after it is stropped, so the CPU is required to update the buffer pointer before each triggering of the START task.<br /><br /><br />Regards,<br />Jonathan</span></p><div style="clear:both;"></div>