I'd like to know if it's possible to synchronize classical quartz clock by replacing inbuilt quartz crystal with DS3231's 32 kHz output. I need to synchronize my analog watch with RTC DS3231.
Am I supposed to simply remove quartz crystal and conenct DS3231 output? There are two wires coming from the watch IC, the crystal is connected between them. I think one is XTAL1 and the other one XTAL2, but which is which? I wonder is it even possible?
I heard it's about connecting 32 kHz output to XTAL1, so "2?" and frequency corrector are not connected then? I'm clueless.