RTC Clock Input | Cypress Semiconductor
RTC Clock Input
The datasheet for the RTC component says that it's based on a 1 PPS interrupt from a 32.768 kHz crystal.
It would be really nice for me (and probably others) if it was possible to configure it to be based on a different signal. I'd like to run the local RTC on the PSoC chip based on the 1 PPS output signal from my GPS module. That way I would only have one clock and wouldn't need to access the GPS RTC over the UART.
It seems like it might not be a huge change, because all the logic of responding to that interrupt would remain the same, but I might be wrong about that.
This isn't possible, right?