The timer clock of the RTC chip is required by the customer to have a frequency of 10~50Hz, and it should be able to switch to at least 10, 20, and 50 frequencies, which are commonly used by them. Check if TI is suitable?
The timer clock for the RX8111CE RTC chip provided by Epson last time only has four selectable frequencies: 1/60 Hz, 1 Hz, 64 Hz, and 4096 Hz