My product have sleep mode option. Can I use LPO Clock source for long term running in my product .I try to use these clock source in watchdog, RTC. Is it very Reliable ? If not , May I know the solution to the clock source for sleep mode ?
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The LPO clock is not very precise:
The LPO can be trimmed (41.7.1.5 Low Power Oscillator Trim Register (LPOTRIM)).
However, one step of LPOTRIM[4:0] gives about 3kHz difference in the LPO frequency.
So, the RTC won't be precise.
If you need the RTC to be precise, you would need to use RTC_CLKIN.
Regards,
Daniel
The LPO clock is not very precise:
The LPO can be trimmed (41.7.1.5 Low Power Oscillator Trim Register (LPOTRIM)).
However, one step of LPOTRIM[4:0] gives about 3kHz difference in the LPO frequency.
So, the RTC won't be precise.
If you need the RTC to be precise, you would need to use RTC_CLKIN.
Regards,
Daniel