ESP32 ~ RTC Clock Accuracy
Posted: Tue Jun 06, 2023 7:44 pm
I cannot find anywhere that states the accuracy of the RTC Clock when the Internal 8.5 MHz oscillator, divided by 256 (~33 kHz) is selected.
I know that using an external RTC or an external crystal is the most accurate, but perhaps the internal RTC is accurate enough for my purposes.
On this page, it outlines which clocks are more accurate.. but does not seem to quantify these differences:
https://docs.espressif.com/projects/esp ... _time.html
The page above also has the following statement:
The last sentence does not make sense to me (surely I am just reading it wrong).
Would someone mind pointing me in the right direction concerning the RTC accuracy capabilities over different temperature ranges?
This is the exact component that I am looking to utilize:
https://www.digikey.com/en/products/det ... 6/16162647
I know that using an external RTC or an external crystal is the most accurate, but perhaps the internal RTC is accurate enough for my purposes.
On this page, it outlines which clocks are more accurate.. but does not seem to quantify these differences:
https://docs.espressif.com/projects/esp ... _time.html
The page above also has the following statement:
- [b]RTC timer:[/b] Allows keeping the system time during any resets and sleep modes, only the power-up reset leads to resetting the RTC timer. The frequency deviation depends on an RTC Clock Source and affects accuracy only in sleep modes, in which case the time will be measured at 6.6667 us resolution.
Would someone mind pointing me in the right direction concerning the RTC accuracy capabilities over different temperature ranges?
This is the exact component that I am looking to utilize:
https://www.digikey.com/en/products/det ... 6/16162647
